WO2023248330A1 - 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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- WO2023248330A1 WO2023248330A1 PCT/JP2022/024668 JP2022024668W WO2023248330A1 WO 2023248330 A1 WO2023248330 A1 WO 2023248330A1 JP 2022024668 W JP2022024668 W JP 2022024668W WO 2023248330 A1 WO2023248330 A1 WO 2023248330A1
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- transmission
- power
- maximum output
- output power
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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]
- H04W52/18—TPC being performed according to specific parameters
- H04W52/22—TPC being performed according to specific parameters taking into account previous information or commands
- H04W52/226—TPC being performed according to specific parameters taking into account previous information or commands using past references to control power, e.g. look-up-table
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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]
- H04W52/06—TPC algorithms
- H04W52/14—Separate analysis of uplink or downlink
- H04W52/146—Uplink power control
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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]
- H04W52/18—TPC being performed according to specific parameters
- H04W52/26—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service]
- H04W52/267—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service] taking into account the information rate
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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]
- H04W52/30—Transmission power control [TPC] using constraints in the total amount of available transmission power
- H04W52/34—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
- H04W52/346—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading distributing total power among users or channels
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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]
- H04W52/30—Transmission power control [TPC] using constraints in the total amount of available transmission power
- H04W52/36—Transmission power control [TPC] using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
- H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range
Definitions
- the present disclosure relates to a terminal, a wireless communication method, and a base station in a next-generation mobile communication system.
- LTE Long Term Evolution
- 3GPP Rel. 10-14 LTE-Advanced (3GPP Rel. 10-14) has been specified for the purpose of further increasing capacity and sophistication of LTE (Third Generation Partnership Project (3GPP) Releases (Rel.) 8 and 9).
- LTE Long Term Evolution
- 5G 5th generation mobile communication system
- 5G+ plus
- NR New Radio
- E-UTRA Evolved Universal Terrestrial Radio Access
- E-UTRAN Evolved Universal Terrestrial Radio Access Network
- the nominal maximum output power/evaluation period/power class for uplink (UL) transmission is not clear. If the nominal maximum output power/evaluation period/power class are not sufficiently considered, there is a risk of reduction in coverage, deterioration in communication quality, and reduction in throughput.
- one of the purposes of the present disclosure is to provide a terminal, a wireless communication method, and a base station that improve the coverage of UL transmission.
- a terminal has a specific maximum output power, an amount of resources used for one or more first uplink transmissions, and a first transmission power used for the one or more first uplink transmissions.
- a control unit that determines an upper limit of second transmission power for second uplink transmission based on at least one of the above, and a transmission unit that performs the second uplink transmission using the second transmission power.
- coverage of UL transmission can be improved.
- FIG. 1 shows an example of the relationship between UE power class and nominal maximum output power.
- 2A and 2B illustrate an example of embodiment #2.
- FIG. 3 shows an example of embodiment #3-1.
- FIG. 4 shows an example of the metric of embodiment #3-2.
- 5A to 5C show an example of the evaluation period of embodiment #3-2.
- FIG. 6 shows Example 1 of Embodiment #3-3.
- FIG. 7 shows Example 2 of Embodiment #3-3.
- FIG. 8 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment.
- FIG. 9 is a diagram illustrating an example of the configuration of a base station according to an embodiment.
- FIG. 10 is a diagram illustrating an example of the configuration of a user terminal according to an embodiment.
- FIG. 11 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment.
- FIG. 12 is a diagram illustrating an example of a vehicle according to an embodiment.
- the transmission power of the PUSCH is controlled based on a TPC command (also referred to as a value, increase/decrease value, correction value, etc.) indicated by the value of a field (also referred to as a TPC command field, etc.) in the DCI.
- a TPC command also referred to as a value, increase/decrease value, correction value, etc.
- a field also referred to as a TPC command field, etc.
- a UE uses a parameter set (open loop parameter set) with index j, an index l of a power control adjustment state (PUSCH power control adjustment state) to determine the active UL of carrier f of serving cell c.
- the transmission power of PUSCH at PUSCH transmission occasion (also referred to as transmission period, etc.) i ( PUSCH, b, f, c (i, j, q d , l)) [dBm] is calculated as follows: 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), f b,f,c (i,l). .
- the power control adjustment state may be referred to as a closed loop (CL)-power control (PC) state, a value based on a TPC command of the power control adjustment state index l, a cumulative value of TPC commands, or a value based on a closed loop.
- l may be called a closed loop index.
- the PUSCH transmission opportunity i is a period during which the PUSCH is transmitted, and may be composed of one or more symbols, one or more slots, etc., for example.
- P CMAX,f,c (i) is, for example, the maximum transmission power of the user terminal configured for carrier f of serving cell c in transmission opportunity i (configured maximum output power, UE configured maximum output power) .
- P O_PUSCH, b, f, c (j) is, for example, a parameter related to the target received power set for the active UL BWP b of carrier f of serving cell c in transmission opportunity i (for example, a parameter related to transmit power offset, (also referred to as power offset P0, target received power parameter, etc.).
- 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 ⁇ .
- ⁇ b,f,c (j) are values provided by upper layer parameters (for example, also referred to as msg3-Alpha, p0-PUSCH-Alpha, fractional factor, etc.).
- PL b, f, c (q d ) is, for example, a reference signal (RS), path loss reference RS, path loss (PL)-RS for downlink BWP associated with active UL BWP b of carrier f of serving cell c.
- path loss reference RS, path loss measurement DL-RS, PUSCH-PathlossReferenceRS is the path loss (path loss estimation [dB], path loss compensation) calculated by the user terminal using the index q d of the path loss reference RS, path loss measurement DL-RS, PUSCH-PathlossReferenceRS).
- the UE uses a synchronization signal (SS) to obtain the Master Information Block (MIB).
- SS synchronization signal
- MIB Master Information Block
- PL b,f,c (q d ) may be calculated using RS resources from a /physical broadcast channel (PBCH) block (SS block (SSB)).
- 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 q d within the set of RS resource indexes.
- the UE may use the same RS resource index q d as for the corresponding PRACH transmission.
- RAR Random Access Response
- the UE is provided with a PUSCH power control setting (e.g., SRI-PUSCH-PowerControl) using a sounding reference signal (SRS) resource indicator (SRI), and is provided with one or more values of the ID of the path loss reference RS.
- SRS sounding reference signal
- SRI resource indicator
- the mapping between the set of values for the SRI field in DCI format 0_1 and the set of ID values of the path loss reference RS is performed using upper layer signaling (e.g. sri-PUSCH in -PowerControl-Id).
- the UE may determine the RS resource index q d from the ID of the path loss reference RS mapped to the SRI field value in the DCI format 0_1 that schedules the PUSCH.
- the UE If the PUSCH transmission is scheduled with DCI format 0_0 and the UE is not provided with PUCCH spatial relationship information for the PUCCH resource with the lowest index for the active UL BWP b of each carrier f and serving cell c, the UE The same RS resource index q d may be used for PUCCH transmission within the resource.
- the UE may use an RS resource index q d with a path loss reference RS ID of zero.
- the RS resource index is determined by the pathloss reference index (e.g., pathlossReferenceIndex) within the specific parameter.
- q d may be provided to the UE.
- the UE activates the PUSCH transmission from the value of the ID of the path loss reference RS mapped to the SRI field in the DCI format.
- a resource index q d may be determined. If the DCI format does not include an SRI field, the UE may determine an RS resource index q d with a path loss 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 cumulative 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 when information indicating that TPC accumulation is disabled is not provided, and TPC accumulation is set to enabled, the UE sets the TPC command value. Accumulate and determine the transmit power based on the accumulation result (power control state) (apply TPC command value via accumulation).
- TPC-Accumulation When information indicating that TPC accumulation is disabled (TPC-Accumulation) is set (when information indicating that TPC accumulation is disabled is provided, when TPC accumulation is set to disabled), the UE issues a TPC command. Determine the transmit power based on the TPC command value (power control state) without accumulating the value (applying the TPC command value without using accumulation).
- ⁇ PUSCH, b, f, c (i, l) is a TPC command value included in DCI format 0_0 or DCI format 0_1 that schedules PUSCH transmission opportunity i on active UL BWP b of carrier f of serving cell c, or a specific
- the TPC command value may be encoded in combination with other TPC commands in DCI format 2_2 with a CRC scrambled by a Radio Network Temporary Identifier (RNTI) (e.g., TPC-PUSCH-RNTI).
- RNTI Radio Network Temporary Identifier
- D i is K PUSCH (ii 0 )-1 symbols before PUSCH transmission opportunity ii 0 on active UL BWP b of carrier f of serving cell c, and PUSCH transmission opportunity It may be a set of TPC command values received before and after K PUSCH (i) symbols of i.
- 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) is the number of serving cells after the last symbol of the corresponding PDCCH reception and before the first symbol of the corresponding PUSCH transmission. It may be the number of symbols in active UL BWP b of carrier f of c.
- K PUSCH (i) is the number of symbols per slot N symb slot in active UL BWP b of carrier f of serving cell c
- PUSCH common configuration information may be the number of K PUSCH,min symbols equal to the product of the minimum value provided by k2 in (PUSCH-ConfigCommon).
- the power control adjustment state may be set to have multiple states (for example, two states) or a single state by upper layer parameters. Further, when a plurality of power control adjustment states are set, one of the plurality of power control adjustment states may be identified by an index l (for example, l ⁇ 0,1 ⁇ ).
- both the PUCCH transmission power and the SRS transmission power are limited by the set maximum output power P CMAX,f,c(i) .
- the UE power class defines the maximum output power (nominal maximum output power, nominal UE power, UE maximum output power) for the transmission bandwidth within the channel bandwidth of the NR carrier.
- the nominal maximum output power P_PowerClass is defined for each UE power class (power class) and band.
- Power class 1 is specified only for public safety.
- Power class 1.5 is defined for UEs with dual transmission (Tx).
- Power class 2 is defined for high power UEs.
- Power class 3 is defined for handheld cellular UEs.
- Class 3 with 23dBm is the default power class.
- 23 dBm is derived based on specific absorption rate (SAR) assumptions when 100% of a certain resource is used for UL transmission.
- SAR specific absorption rate
- P_CMAX (upper and lower limits) is defined by the following formula.
- P_EMAX,c is the value (maximum allowable UE output power notified by the upper layer) given by the p-Max information element or additionalPmax for the serving cell c.
- ⁇ P_PowerClass is an adjustment to the nominal maximum output power P_PowerClass for a given power class and is a duty cycle dependent power throttling.
- the field UE capability maxUplinkDutyCycle-PC2-FR1 is present, and the percentage of UL symbols transmitted in a certain evaluation period is higher than maxUplinkDutyCycle-PC2-FR1 (the exact evaluation period is shorter than one radio frame).
- the field UE capability maxUplinkDutyCycle-MPE-FR1 is present, and the percentage of UL symbols transmitted in a certain evaluation period is higher than maxUplinkDutyCycle-MPE-FR1 (the exact evaluation period is shorter than one radio frame).
- the field UE capability maxUplinkDutyCycle-PC2-FR1 exists, and the percentage of UL symbols transmitted in a certain evaluation period is between maxUplinkDutyCycle-PC2-FR1 and maxUplinkDutyCycle-PC2-FR1/2 (the exact evaluation period is 1 shorter than a radio frame).
- the field UE capability maxUplinkDutyCycle-MPE-FR1 is present, and the percentage of UL symbols transmitted in a certain evaluation period is higher than maxUplinkDutyCycle-MPE-FR1 (the exact evaluation period is shorter than one radio frame).
- a PC2 capable UE with transmit diversity (txDiversity-r16) capability or a PC1.5 capable UE with SRS transmit switch (SRS-TXSwitch) capability 't1r2' or 't1r4' or 't1r1-t1r2' or 't1r1'-t1r2-t1r4' indicates the usage in the SRS-ResourceSet set as antenna switching ('antennaSwitching'), with the SRS resource set in each SRS resource set consisting of one SRS port.
- Rel. 17 NR defines high power UE. It can be transmitted with a power higher than 23dBm. 23dBm is considered the default PC (PC3). 23dBm is derived based on the SAR requirement when the UE transmits UL on 100% of a given resource.
- condition may be how many resources the UE has to transmit within a certain period of time, or it may be the UE's capabilities.
- the current fallback conditions are conservative. If there are no or fewer UL transmissions before a certain evaluation period, and if the period for confirmation of SAR requirements is different from a certain evaluation period, the fallback condition can be less than 50% UL transmissions. There is sex.
- the nominal maximum output power/evaluation period/power class is not clear. If the nominal maximum output power/evaluation period/power class are not sufficiently considered, there is a risk of reduction in coverage, deterioration in communication quality, and reduction in throughput.
- the present inventors came up with a method for determining transmission power.
- A/B and “at least one of A and B” may be read interchangeably. Furthermore, in the present disclosure, “A/B/C” may mean “at least one of A, B, and C.”
- Radio Resource Control RRC
- RRC parameters RRC parameters
- RRC messages RRC messages
- upper layer parameters information elements (IEs), settings, etc.
- IEs information elements
- CE Medium Access Control Element
- update command activation/deactivation command, etc.
- the upper layer signaling may be, for example, Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, etc., or a combination thereof.
- RRC Radio Resource Control
- MAC Medium Access Control
- MAC signaling may use, for example, a MAC Control Element (MAC CE), a MAC Protocol Data Unit (PDU), or the like.
- Broadcast information includes, for example, a master information block (MIB), a system information block (SIB), a minimum system information (RMSI), and other system information ( Other System Information (OSI)) may also be used.
- MIB master information block
- SIB system information block
- RMSI minimum system information
- OSI Other 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
- an index an identifier (ID), an indicator, a resource ID, etc.
- ID an identifier
- indicator an indicator
- resource ID a resource ID
- sequences, lists, sets, groups, groups, clusters, subsets, etc. may be used interchangeably.
- a panel, a UE panel, a panel group, a beam, a beam group, a precoder, an uplink (UL) transmitting entity, a transmission/reception point (TRP), a base station, and a spatial relation information (SRI) are described.
- SRS resource indicator SRI
- control resource set CONtrol REsource SET (CORESET)
- Physical Downlink Shared Channel PDSCH
- codeword CW
- Transport Block Transport Block
- TB transport Block
- RS reference signal
- antenna port e.g. demodulation reference signal (DMRS) port
- antenna port group e.g.
- DMRS port group groups (e.g., spatial relationship groups, Code Division Multiplexing (CDM) groups, reference signal groups, CORESET groups, Physical Uplink Control Channel (PUCCH) groups, PUCCH resource groups), resources (e.g., reference signal resources, SRS resource), resource set (for example, reference signal resource set), CORESET pool, downlink Transmission Configuration Indication state (TCI state) (DL TCI state), uplink TCI state (UL TCI state), unified TCI Unified TCI state, common TCI state, quasi-co-location (QCL), QCL assumption, etc. may be read interchangeably.
- groups e.g., spatial relationship groups, Code Division Multiplexing (CDM) groups, reference signal groups, CORESET groups, Physical Uplink Control Channel (PUCCH) groups, PUCCH resource groups
- resources e.g., reference signal resources, SRS resource
- resource set for example, reference signal resource set
- CORESET pool downlink Transmission Configuration Indication state (TCI state) (DL TCI state), up
- nominal maximum output power nominal UE power, UE maximum output power, maximum UE power, maximum output power, maximum output power specified for a power class, P_PowerClass, and P PowerClass are interchangeable. You can. In this disclosure, adjustments to the maximum output power for a given power class, adjustments to the nominal maximum output power, ⁇ P_PowerClass, ⁇ P PowerClass may be read interchangeably.
- configured maximum output power, configured transmission power, UE configured maximum output power, configured maximum UE output power, actual maximum output power, maximum output power, P_CMAX, P CMAX,f,c (i ), may be read interchangeably.
- UE power class, power class, and PC may be interchanged.
- base station gNB
- NW network
- uplink (UL) transmission may include at least one of PUSCH, PUCCH, and SRS.
- the upper limit of transmission power (PUSCH transmission power, PUCCH transmission power, SRS transmission power), set maximum output power P CMAX,f,c (i), upper limit of set maximum output power P CMAX_H,f,c , P PowerClass - ⁇ P PowerClass may be read interchangeably.
- specific maximum output power, nominal maximum output power, set maximum output power, default maximum output power, and energy budget may be read interchangeably.
- the amount of transmission resources, transmission time, and transmission duration may be read interchangeably.
- addition, adjustment, reduction, addition, and subtraction may be read interchangeably.
- New power classes may be defined with a nominal maximum output power of 30 dBm or more. This allows for increased coverage of UL transmissions without sacrificing UL resources (eg, without repetition).
- the target of the new power class may be limited to at least one of the following devices/scenarios: -
- the number of Tx chains (RF chains, power amplifiers (PAs)) is 2 or more.
- PAs power amplifiers
- a new power class may be defined with a nominal maximum output power of less than 23 dBm. This allows the UE to be implemented with a more reasonable/cheaper cost.
- the target of the new power class may be limited to at least one of the following devices/scenarios: - Only UEs with reduced capabilities than normal UEs (eRedCap, IoT devices, etc.).
- the UE may use the appropriate nominal maximum output power/power class.
- the UE determines the configured maximum output power (e.g. P_CMAX, upper limit of the second transmit power) for the UL transmission (second UL transmission) based on the actual amount of resources used for the UL transmission (one or more first UL transmissions). (Actual transmission resource amount, actual transmission time, first transmission power) may be considered.
- the UL transmission may include past UL transmissions or may include UL transmissions using the set maximum output power.
- the resource may be a time resource or a frequency resource.
- the UE may calculate the additional available power (additional power, amount, adjustment amount) based on the default maximum output power, considering the actual amount of resources used for UL transmission.
- the default maximum output power may be the nominal maximum output power (23 dBm) of the default PC.
- the additional power may depend on the actual amount of UL transmission.
- the UE may determine the configured maximum output power by adding additional power to the default maximum output power.
- the additional power may be 10log(x/100) -1 .
- x may be the percentage of UL symbols transmitted within a certain evaluation period.
- the setting maximum output power may be equal to the default maximum output power + 10log(x/100) -1 .
- the actual amount of resources used for UL transmission may be measured in units of system frames, slots, or symbols.
- the set maximum output power may be obtained by a round function, floor function, ceil function, etc. for the default maximum output power + additional power.
- Another upper limit may be imposed on the set maximum output power.
- the upper limit may be defined for each power class.
- the UE may calculate the adjusted power (reduced power, adjustment amount) from the specified nominal maximum output power based on the specified nominal maximum output power for the corresponding power class.
- the specified nominal maximum output power may be the default maximum output power.
- the adjusted power may depend on the actual amount of UL transmission.
- the UE may determine the configured maximum output power by subtracting the adjusted power from the default maximum output power.
- the set maximum output power may be obtained by a round function, a floor function, a ceil function, etc. for the default maximum output power minus the adjusted power.
- the set maximum output power can be appropriately determined based on the resources used for transmission.
- the UE determines the set maximum output power (e.g., P_CMAX, upper limit of the second transmit power) for the UL transmission (second UL transmission) using the actual transmit power ( (actual transmission time, actual transmission energy, first transmission power) may be considered.
- the UL transmission may include past UL transmissions or may include UL transmissions using the set maximum output power.
- the resource may be a time resource or a frequency resource. The setting maximum output power can be optimized.
- the UE assumes that the nominal maximum output power is always allocated for the power class. In the case where lower power is allocated to each transmission power control (TPC) function in layer 1, it is technically acceptable to be more relaxed from the viewpoint of SAR.
- TPC transmission power control
- the actual transmit power may be based on at least one of RRC configured parameters, path loss, transmitted content, bandwidth (eg, number of RBs), and closed loop power control parameters.
- the duration may be the total number of symbols of the UL transmission or the number of slots of the UL transmission.
- the duration may be the number of radio frames (10ms) or may be expressed in units of ms.
- Duration of subsequent (to be transmitted) UL transmission may be the total number of symbols of the UL transmission or the number of slots of the UL transmission.
- MPR Maximum power reduction
- the UE transmits UL #1 within the evaluation period, and transmits UL #2 after the evaluation period.
- the actual transmission power of UL #1 is X1 dBm.
- the duration of UL #1 is Y1% of the duration of the evaluation period.
- New metrics may be defined (eg, energy budget, energy consumption, etc.).
- An energy budget may be defined as the product of the default maximum output power (eg, 23 dBm or its linear value) and the duration of the evaluation period.
- the consumed energy may be defined as the sum of the product of the actual transmit power (in dB or linear value) and the duration of each UL transmission within the evaluation period.
- the UE transmits UL #1 and UL #2 within the evaluation period, and transmits UL #3 after the evaluation period.
- the actual transmission power of UL #1 is X1 dBm (linear value x1 [mW]).
- the duration of UL #1 is Y1% of the duration of the evaluation period.
- the actual transmission power of UL #2 is X2 dBm (linear value x2 [mW]).
- the duration of UL #1 is Y2% of the duration of the evaluation period.
- the energy budget is the default maximum output power (linear value) * duration of the evaluation period. Energy consumption is x1*Y1+x2*Y2.
- the duration of the evaluation period may be defined using at least one of the following parameters: - Number of slots/symbols. - Number of radio frames (10ms). - Absolute time (e.g. 1ms, 10ms, 1sec, etc.).
- the start/end of the evaluation period may be defined using at least one of the following parameters: ⁇ Start UL transmission.
- the end of the evaluation period may be the start of the next UL #2.
- -End of UL transmission In the example of FIG. 5B, the start of the evaluation period may be the end of the next UL #2.
- the UL transmission may include reporting information regarding transmit power.
- the duration of the sub-evaluation period may be defined using at least one of the following parameters: - Number of slots/symbols. - Number of radio frames (10ms). - Absolute time (e.g. 1ms, 10ms, 1sec, etc.).
- the duration of the evaluation period may be an integral multiple of the duration of the sub-evaluation period.
- the end of the evaluation period may be the start of the next UL #2.
- the duration of the evaluation period may be the duration of two consecutive sub-evaluation periods.
- An operation for determining the set maximum output power may be defined that takes into account the actual transmit power allocated to the UL transmission.
- the evaluation period ends at the start of the subsequent UL transmission. Energy consumption within the evaluation period is calculated. Energy consumption is compared to the energy budget. If the consumed energy is equal to the energy budget or if it is greater than the energy budget, power up to the default maximum output power is considered to be used for subsequent UL transmissions. If the consumed energy is less than the energy budget, the set maximum output power may be greater than the default maximum output power for subsequent UL transmissions.
- the UE transmits UL #1 within the evaluation period.
- the actual transmission power of UL #1 is X1 dBm.
- the duration of UL #1 is Y% of the duration of the evaluation period.
- the evaluation period ends at the start of the next UL #2.
- the duration set for the UL transmission (for example, UL #2) within the second evaluation period following the evaluation period is at least one of the energy budget and the set maximum output power within the second evaluation period. may be restricted based on.
- the UE transmits UL #1 within the evaluation period.
- the actual transmission power of UL #1 is X1 dBm.
- the duration of UL #1 is Y% of the duration of the evaluation period.
- the evaluation period ends at the end of the next UL #2.
- the set maximum output power may be limited by another upper limit in addition to the energy budget-based constraints in this embodiment.
- the upper limit may be a nominal maximum output power defined for each power class.
- the duration set for subsequent UL transmissions for a given UL transmission may be limited based on at least one of the remaining energy budget and the set maximum output power.
- the UE can appropriately determine the set maximum output power based on the actual transmission power.
- ⁇ Supplement> The operations of at least one of the embodiments described above may apply only to UEs that have reported or support a particular UE capability.
- the particular UE capability may indicate at least one of the following: -Support 6G or newly defined radio access technology (RAT).
- RAT radio access technology
- - Support new UE power classes. Supporting maximum output power determination/setting that takes into account the amount of resources used in previous UL transmissions. - Supporting maximum output power determination/setting that takes into account the amount of resources used for actual UL transmission. - Support reporting on factors for determining actual maximum output power.
- the above-mentioned specific UE capability may be a capability that is applied across all frequencies (commonly regardless of frequency), or may be a capability for each frequency (for example, cell, band, BWP). , capability for each frequency range (for example, Frequency Range 1 (FR1), FR2, FR3, FR4, FR5, FR2-1, FR2-2), or for each subcarrier spacing (SCS). It may be the ability of
- the above-mentioned specific UE capability may be a capability that is applied across all duplex schemes (commonly regardless of the duplex scheme), or may be a capability that is applied across all duplex schemes (for example, Time Division Duplex).
- the capability may be for each frequency division duplex (TDD)) or frequency division duplex (FDD)).
- the UE is configured with specific information related to the above-described embodiments by upper layer signaling.
- the specific information may be information indicating enabling at least one operation of the embodiments described above, any RRC parameters for a specific release (eg, Rel. 18), and the like.
- the UE does not support at least one operation of the specific UE capabilities or is not configured with the specific information, for example, Rel. 15/16/17 operations may be applied.
- a control unit Based on at least one of a specific maximum output power, an amount of resources used for the one or more first uplink transmissions, and a first transmission power used for the one or more first uplink transmissions, a control unit that determines an upper limit of second transmission power for second uplink transmission; A terminal comprising: a transmitter that performs the second uplink transmission using the second transmission power.
- the control unit determines the upper limit by adding or subtracting an adjustment amount based on the resource amount to a value based on the specific maximum output power.
- wireless communication system The 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-described embodiments of the present disclosure or a combination thereof.
- FIG. 8 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment.
- the wireless communication system 1 may be a system that realizes communication using Long Term Evolution (LTE), 5th generation mobile communication system New Radio (5G NR), etc. specified by the Third Generation Partnership Project (3GPP). .
- LTE Long Term Evolution
- 5G NR 5th generation mobile communication system New Radio
- 3GPP Third Generation Partnership Project
- the wireless communication system 1 may support dual connectivity between multiple Radio Access Technologies (RATs) (Multi-RAT Dual Connectivity (MR-DC)).
- MR-DC has dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), and dual connectivity between NR and LTE (NR-E -UTRA Dual Connectivity (NE-DC)).
- RATs Radio Access Technologies
- MR-DC has dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), and dual connectivity between NR and LTE (NR-E -UTRA Dual Connectivity (NE-DC)).
- 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 (Master Node (MN)), and the NR base station (gNB) is the secondary node (Secondary Node (SN)).
- the NR base station (gNB) is the MN
- the LTE (E-UTRA) base station (eNB) is the SN.
- the wireless communication system 1 has dual connectivity between multiple base stations within the same RAT (for example, dual connectivity (NR-NR Dual Connectivity (NN-DC) where both the MN and SN are NR base stations (gNB)). )) may be supported.
- dual connectivity NR-NR Dual Connectivity (NN-DC) where both the MN and SN are NR base stations (gNB)).
- the wireless communication system 1 includes a base station 11 that forms a macro cell C1 with relatively wide coverage, and base stations 12 (12a-12c) that are located within the macro cell C1 and form a small cell C2 that is narrower than the macro cell C1. You may prepare.
- User terminal 20 may be located within at least one cell. The arrangement, number, etc. of each cell and user terminal 20 are not limited to the embodiment shown in the figure. Hereinafter, when base stations 11 and 12 are not distinguished, they will be collectively referred to as base station 10.
- the user terminal 20 may be connected to at least one of the plurality of base stations 10.
- the user terminal 20 may use at least one of carrier aggregation (CA) using a plurality of 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 FR1 may correspond to a higher frequency band than FR2, for example.
- 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 plurality of base stations 10 may be connected by wire (for example, optical fiber, X2 interface, etc. compliant with Common Public Radio Interface (CPRI)) or wirelessly (for example, NR communication).
- wire for example, optical fiber, X2 interface, etc. compliant with Common Public Radio Interface (CPRI)
- NR communication for example, when NR communication is used as a backhaul between base stations 11 and 12, base station 11, which is an upper station, is an Integrated Access Backhaul (IAB) donor, and base station 12, which is a relay station, is an IAB donor. May also be called a node.
- IAB Integrated Access Backhaul
- the base station 10 may be connected to the core network 30 via another base station 10 or directly.
- the core network 30 may include, for example, at least one of Evolved Packet Core (EPC), 5G Core Network (5GCN), Next Generation Core (NGC), and the like.
- EPC Evolved Packet Core
- 5GCN 5G Core Network
- NGC Next Generation Core
- the user terminal 20 may be a terminal compatible with at least one of communication systems such as LTE, LTE-A, and 5G.
- an orthogonal frequency division multiplexing (OFDM)-based wireless access method 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
- a wireless access method may also be called a waveform.
- other wireless access methods for example, other single carrier transmission methods, other multicarrier transmission methods
- the UL and DL radio access methods may be used as the UL and DL radio access methods.
- the downlink channels include a physical downlink shared channel (PDSCH) shared by each user terminal 20, a broadcast channel (physical broadcast channel (PBCH)), and a downlink control channel (physical downlink control). Channel (PDCCH)) or the like may be used.
- PDSCH physical downlink shared channel
- PBCH physical broadcast channel
- PDCCH downlink control channel
- uplink channels include a physical uplink shared channel (PUSCH) shared by each user terminal 20, an uplink control channel (PUCCH), and a random access channel. (Physical Random Access Channel (PRACH)) or the like may be used.
- PUSCH physical uplink shared channel
- PUCCH uplink control channel
- PRACH Physical Random Access Channel
- User data, upper layer control information, System Information Block (SIB), etc. are transmitted by the PDSCH.
- User data, upper layer control information, etc. may be transmitted by PUSCH.
- a Master Information Block (MIB) may be transmitted via the PBCH.
- Lower layer control information may be transmitted by PDCCH.
- the lower layer control information may include, for example, downlink control information (DCI) that includes scheduling information for at least one of PDSCH and PUSCH.
- DCI downlink control information
- DCI that schedules PDSCH may be called DL assignment, DL DCI, etc.
- DCI that schedules PUSCH may be called UL grant, UL DCI, etc.
- PDSCH may be replaced with DL data
- PUSCH may be replaced with UL data.
- a control resource set (CONtrol REsource SET (CORESET)) and a search space may be used to detect the PDCCH.
- CORESET corresponds to a resource for searching DCI.
- the search space corresponds to a search area and a search method for PDCCH candidates (PDCCH candidates).
- PDCCH candidates PDCCH candidates
- One CORESET may be associated with one or more search spaces. The UE may monitor the CORESET associated with a certain search space based on the search space configuration.
- One search space may correspond to PDCCH candidates corresponding to one or more aggregation levels.
- One or more search spaces may be referred to as a search space set. Note that “search space”, “search space set”, “search space setting”, “search space set setting”, “CORESET”, “CORESET setting”, etc. in the present disclosure may be read interchangeably.
- the PUCCH allows channel state information (CSI), delivery confirmation information (for example, may be called Hybrid Automatic Repeat Request ACKnowledgement (HARQ-ACK), ACK/NACK, etc.), and scheduling request ( Uplink Control Information (UCI) including at least one of SR)) may be transmitted.
- CSI channel state information
- delivery confirmation information for example, may be called Hybrid Automatic Repeat Request ACKnowledgement (HARQ-ACK), ACK/NACK, etc.
- UCI Uplink Control Information including at least one of SR
- a random access preamble for establishing a connection with a cell may be transmitted by PRACH.
- downlinks, uplinks, etc. may be expressed without adding "link”.
- various channels may be expressed without adding "Physical” at the beginning.
- a synchronization signal (SS), a downlink reference signal (DL-RS), and the like may be transmitted.
- the DL-RS includes a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS), and a demodulation reference signal (DeModulation).
- Reference Signal (DMRS)), Positioning Reference Signal (PRS), 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 SS (PSS, SSS) and PBCH (and DMRS for PBCH) may be called an SS/PBCH block, SS Block (SSB), etc. Note that SS, SSB, etc. may also be called reference signals.
- DMRS Downlink Reference Signal
- UL-RS uplink reference signals
- SRS Sounding Reference Signal
- DMRS demodulation reference signals
- UE-specific reference signal user terminal-specific reference signal
- FIG. 9 is a diagram illustrating an example of the configuration of a base station according to an embodiment.
- the base station 10 includes a control section 110, a transmitting/receiving section 120, a transmitting/receiving antenna 130, and a transmission line interface 140. Note that one or more of each of the control unit 110, the transmitting/receiving unit 120, the transmitting/receiving antenna 130, and the transmission path interface 140 may be provided.
- this example mainly shows functional blocks that are characteristic of the present embodiment, and it may be assumed that the base station 10 also has other functional blocks necessary for wireless communication. A part of the processing of each unit 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 will be explained based on common recognition in the technical field related to the present disclosure.
- the control unit 110 may control signal generation, scheduling (e.g., resource allocation, mapping), and the like.
- the control unit 110 may control transmission and reception, measurement, etc. using the transmitting/receiving unit 120, the transmitting/receiving antenna 130, and the transmission path interface 140.
- the control unit 110 may generate data, control information, a sequence, etc. to be transmitted as a signal, and may transfer the generated data to the transmitting/receiving unit 120.
- the control unit 110 may perform communication channel call processing (setting, release, etc.), status management of the base station 10, radio resource management, and the like.
- the transmitting/receiving section 120 may include a baseband section 121, a radio frequency (RF) section 122, and a measuring section 123.
- the baseband section 121 may include a transmission processing section 1211 and a reception processing section 1212.
- the transmitter/receiver unit 120 includes a transmitter/receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmitter/receiver circuit, etc., which are explained based on common understanding in the technical field related to the present disclosure. be able to.
- the transmitting/receiving section 120 may be configured as an integrated transmitting/receiving section, or may be configured from a transmitting section and a receiving section.
- the transmitting section may include a transmitting processing section 1211 and an RF section 122.
- the reception section may include a reception processing section 1212, an RF section 122, and a measurement section 123.
- the transmitting/receiving antenna 130 can be configured from an antenna described based on common recognition in the technical field related to the present disclosure, such as an array antenna.
- the transmitter/receiver 120 may transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc.
- the transmitter/receiver 120 may receive the above-mentioned uplink channel, uplink reference signal, and the like.
- the transmitting/receiving unit 120 may form at least one of a transmitting beam and a receiving beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), or the like.
- digital beamforming e.g., precoding
- analog beamforming e.g., phase rotation
- the transmitting/receiving unit 120 (transmission processing unit 1211) performs Packet Data Convergence Protocol (PDCP) layer processing, Radio Link Control (RLC) layer processing (for example, RLC retransmission control), Medium Access Control (MAC) layer processing (for example, HARQ retransmission control), etc. may be performed to generate a bit string to be transmitted.
- PDCP Packet Data Convergence Protocol
- RLC Radio Link Control
- MAC Medium Access Control
- HARQ retransmission control for example, HARQ retransmission control
- the transmitting/receiving unit 120 performs channel encoding (which may include error correction encoding), modulation, mapping, filter processing, and discrete Fourier transform (DFT) on the bit string to be transmitted.
- a baseband signal may be output by performing transmission processing such as processing (if necessary), Inverse Fast Fourier Transform (IFFT) processing, precoding, and digital-to-analog conversion.
- IFFT Inverse Fast Fourier Transform
- the transmitting/receiving unit 120 may perform modulation, filter processing, amplification, etc. on the baseband signal in a radio frequency band, and may transmit the signal in the radio frequency band via the transmitting/receiving antenna 130. .
- the transmitting/receiving section 120 may perform amplification, filter processing, demodulation into a baseband signal, etc. on the radio frequency band signal received by the transmitting/receiving antenna 130.
- the transmitting/receiving unit 120 (reception processing unit 1212) performs analog-to-digital conversion, fast Fourier transform (FFT) processing, and inverse discrete Fourier transform (IDFT) on the acquired baseband signal. )) processing (if necessary), applying reception processing such as filter processing, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing and PDCP layer processing, User data etc. may also be acquired.
- FFT fast Fourier transform
- IDFT inverse discrete Fourier transform
- the transmitting/receiving unit 120 may perform measurements regarding the received signal.
- the measurement unit 123 may perform Radio Resource Management (RRM) measurement, Channel State Information (CSI) measurement, etc. based on the received signal.
- the measurement unit 123 is the receiving power (for example, Reference Signal Received Power (RSRP)), Receive Quality (eg, Reference Signal Received Quality (RSRQ), Signal To InterfERENCE PLUS NOI. SE RATIO (SINR), Signal to Noise Ratio (SNR) , signal strength (for example, Received Signal Strength Indicator (RSSI)), propagation path information (for example, CSI), etc. may be measured.
- the measurement results may be output to the control unit 110.
- the transmission path interface 140 transmits and receives signals (backhaul signaling) between devices included in the core network 30, other base stations 10, etc., and transmits and receives user data (user plane data) for the user terminal 20, control plane It is also possible to acquire and transmit data.
- the transmitting unit and receiving unit of the base station 10 in the present disclosure may be configured by at least one of the transmitting/receiving unit 120, the transmitting/receiving antenna 130, and the transmission path interface 140.
- the control unit 110 may control reception of one or more first uplink transmissions.
- the transmitter/receiver 120 may receive the second uplink transmission.
- the upper limit of the second transmission power of the second uplink transmission is based on a specific maximum output power, the amount of resources used for the one or more first uplink transmissions, and the amount of resources used for the one or more first uplink transmissions.
- the first transmission power used may be based on at least one of the following.
- FIG. 10 is a diagram illustrating an example of the configuration of a user terminal according to an embodiment.
- the user terminal 20 includes a control section 210, a transmitting/receiving section 220, and a transmitting/receiving antenna 230. Note that one or more of each of the control unit 210, the transmitting/receiving unit 220, and the transmitting/receiving antenna 230 may be provided.
- this example mainly shows functional blocks that are characteristic of the present embodiment, and it may be assumed that the user terminal 20 also has other functional blocks necessary for wireless communication. A part of the processing of each unit 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 will be explained based on common recognition in the technical field related to the present disclosure.
- the control unit 210 may control signal generation, mapping, etc.
- the control unit 210 may control transmission and reception using the transmitting/receiving unit 220 and the transmitting/receiving antenna 230, measurement, and the like.
- the control unit 210 may generate data, control information, sequences, etc. to be transmitted as a signal, and may transfer the generated data to the transmitting/receiving unit 220.
- the transmitting/receiving section 220 may include a baseband section 221, an RF section 222, and a measuring section 223.
- the baseband section 221 may include a transmission processing section 2211 and a reception processing section 2212.
- the transmitting/receiving unit 220 can be configured from a transmitter/receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measuring circuit, a transmitting/receiving circuit, etc., which are explained based on common recognition in the technical field related to the present disclosure.
- the transmitting/receiving section 220 may be configured as an integrated transmitting/receiving section, or may be configured from a transmitting section and a receiving section.
- the transmitting section may include a transmitting processing section 2211 and an RF section 222.
- the reception section may include a reception processing section 2212, an RF section 222, and a measurement section 223.
- the transmitting/receiving antenna 230 can be configured from an antenna, such as an array antenna, as described based on common recognition in the technical field related to the present disclosure.
- the transmitter/receiver 220 may receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc.
- the transmitter/receiver 220 may transmit the above-mentioned uplink channel, uplink reference signal, and the like.
- the transmitting/receiving unit 220 may form at least one of a transmitting beam and a receiving beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), or the like.
- digital beamforming e.g., precoding
- analog beamforming e.g., phase rotation
- the transmission/reception unit 220 (transmission processing unit 2211) performs PDCP layer processing, RLC layer processing (e.g. RLC retransmission control), MAC layer processing (e.g. , HARQ retransmission control), etc., to generate a bit string to be transmitted.
- RLC layer processing e.g. RLC retransmission control
- MAC layer processing e.g. , HARQ retransmission control
- the transmitting/receiving unit 220 (transmission processing unit 2211) performs channel encoding (which may include error correction encoding), modulation, mapping, filter processing, DFT processing (as necessary), and IFFT processing on the bit string to be transmitted. , precoding, digital-to-analog conversion, etc., and output a baseband signal.
- DFT processing may be based on the settings of transform precoding.
- the transmitting/receiving unit 220 transmits the above processing in order to transmit the channel using the DFT-s-OFDM waveform.
- DFT processing may be performed as the transmission processing, or if not, DFT processing may not be performed as the transmission processing.
- the transmitting/receiving unit 220 may perform modulation, filter processing, amplification, etc. on the baseband signal in a radio frequency band, and may transmit the signal in the radio frequency band via the transmitting/receiving antenna 230. .
- the transmitting/receiving section 220 may perform amplification, filter processing, demodulation into a baseband signal, etc. on the radio frequency band signal received by the transmitting/receiving antenna 230.
- the transmission/reception unit 220 (reception processing unit 2212) performs analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filter processing, demapping, demodulation, and decoding (error correction) on the acquired baseband signal. (which may include decoding), MAC layer processing, RLC layer processing, and PDCP layer processing may be applied to obtain user data and the like.
- the transmitting/receiving unit 220 may perform measurements regarding the received signal.
- the measurement unit 223 may perform RRM measurement, CSI measurement, etc. based on the received signal.
- the measurement unit 223 may measure received power (for example, RSRP), reception quality (for example, RSRQ, SINR, SNR), signal strength (for example, RSSI), propagation path information (for example, CSI), and the like.
- the measurement results may be output to the control unit 210.
- the transmitting unit and receiving unit of the user terminal 20 in the present disclosure may be configured by at least one of the transmitting/receiving unit 220 and the transmitting/receiving antenna 230.
- the control unit 210 determines at least one of a specific maximum output power, an amount of resources used for one or more first uplink transmissions, and a first transmission power used for the one or more first uplink transmissions.
- the upper limit of the second transmission power of the second uplink transmission may be determined based on the following.
- the transmitting/receiving unit 220 may perform the second uplink transmission using the second transmission power.
- the control unit 210 may determine the upper limit by adding or subtracting an adjustment amount based on the amount of resources to a value based on the specific maximum output power.
- the control unit 210 may determine the available energy based on the specific maximum output power within a specific period, and may determine the upper limit within the specific period based on the available energy.
- the specific maximum output power may be 30 dBm or more or lower than 23 dBm.
- each functional block may be realized using one physically or logically coupled device, or may be realized using two or more physically or logically separated devices directly or indirectly (e.g. , wired, wireless, etc.) and may be realized using a plurality of these devices.
- the functional block may be realized by combining software with the one device or the plurality of devices.
- functions include judgment, decision, judgement, calculation, calculation, processing, derivation, investigation, exploration, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, and consideration. , broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc.
- a functional block (configuration unit) that performs transmission may be called a transmitting unit, a transmitter, or the like. In either case, as described above, the implementation method is not particularly limited.
- a base station, a user terminal, etc. in an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure.
- FIG. 11 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment.
- the base station 10 and user terminal 20 described above may be physically configured as a computer device including a processor 1001, memory 1002, storage 1003, communication device 1004, input device 1005, output device 1006, bus 1007, etc. .
- the hardware configuration of the base station 10 and the user terminal 20 may be configured to include one or more of each device shown in the figure, or may be configured not to include some of the devices.
- processor 1001 may be implemented using one or more chips.
- Each function in the base station 10 and the user terminal 20 is performed by, for example, loading predetermined software (program) onto hardware such as a processor 1001 and a memory 1002, so that the processor 1001 performs calculations and communicates via the communication device 1004. This is achieved by controlling at least one of reading and writing data in the memory 1002 and storage 1003.
- predetermined software program
- the processor 1001 operates an operating system to control the entire computer.
- the processor 1001 may be configured by a central processing unit (CPU) that includes interfaces with peripheral devices, a control device, an arithmetic unit, registers, and the like.
- CPU central processing unit
- the above-mentioned control unit 110 (210), transmitting/receiving unit 120 (220), etc. may be realized by the processor 1001.
- the processor 1001 reads programs (program codes), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 to the memory 1002, and executes various processes in accordance with these.
- programs program codes
- software modules software modules
- data etc.
- the control unit 110 may be realized by a control program stored in the memory 1002 and operated in the processor 1001, and other functional blocks may also be realized in the same way.
- the memory 1002 is a computer-readable recording medium, and includes at least one of Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically EPROM (EEPROM), Random Access Memory (RAM), and other suitable storage media. It may be composed of one. Memory 1002 may be called a register, cache, main memory, or the like.
- the memory 1002 can store executable programs (program codes), software modules, and the like to implement a wireless communication method according to an embodiment of the present disclosure.
- the storage 1003 is a computer-readable recording medium, such as a flexible disk, a floppy (registered trademark) disk, a magneto-optical disk (for example, a compact disk (CD-ROM), etc.), a digital versatile disk, removable disk, hard disk drive, smart card, flash memory device (e.g., card, stick, key drive), magnetic stripe, database, server, or other suitable storage medium. It may be configured by Storage 1003 may also be called an auxiliary storage device.
- a computer-readable recording medium such as a flexible disk, a floppy (registered trademark) disk, a magneto-optical disk (for example, a compact disk (CD-ROM), etc.), a digital versatile disk, removable disk, hard disk drive, smart card, flash memory device (e.g., card, stick, key drive), magnetic stripe, database, server, or other suitable storage medium. It may be configured by Storage 1003 may also be called an auxiliary storage device.
- the communication device 1004 is hardware (transmission/reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as a network device, network controller, network card, communication module, etc., for example.
- the communication device 1004 includes, for example, a high frequency switch, a duplexer, a filter, a frequency synthesizer, etc. in order to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). It may be configured to include.
- FDD frequency division duplex
- TDD time division duplex
- the transmitter/receiver 120 (220) may be physically or logically separated into a transmitter 120a (220a) and a receiver 120b (220b).
- the input device 1005 is an input device (eg, keyboard, mouse, microphone, switch, button, sensor, etc.) that accepts input from the outside.
- the output device 1006 is an output device (for example, a display, a speaker, a light emitting diode (LED) lamp, etc.) that performs output to the outside. Note that the input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).
- each device such as the processor 1001 and the memory 1002 is connected by a bus 1007 for communicating information.
- the bus 1007 may be configured using a single bus, or may be configured using different buses for each device.
- the base station 10 and user terminal 20 also include a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), a field programmable gate array (FPGA), etc. It may be configured to include hardware, and a part or all of each functional block may be realized using the hardware. For example, processor 1001 may be implemented using at least one of these hardwares.
- DSP digital signal processor
- ASIC application specific integrated circuit
- PLD programmable logic device
- FPGA field programmable gate array
- channel, symbol and signal may be interchanged.
- the signal may be a message.
- the reference signal may also be abbreviated as RS, and may be called a pilot, pilot signal, etc. depending on the applicable standard.
- a component carrier CC may 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 (eg, 1 ms) that does not depend on numerology.
- the numerology may be a communication parameter applied to at least one of transmission and reception of a certain signal or channel.
- Numerology includes, for example, subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, and radio frame structure. , a specific filtering process performed by the transceiver in the frequency domain, a specific windowing process performed by the transceiver in the time domain, etc.
- a slot may be composed of one or more symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, etc.) in the time domain. Furthermore, a slot may be a time unit based on numerology.
- OFDM Orthogonal Frequency Division Multiplexing
- SC-FDMA Single Carrier Frequency Division Multiple Access
- a slot may include multiple mini-slots. Each minislot may be made up of one or more symbols in the time domain. Furthermore, a mini-slot may also be called a sub-slot. A minislot may be made up of fewer symbols than a slot.
- PDSCH (or PUSCH) transmitted in time units larger than minislots may be referred to as PDSCH (PUSCH) mapping type A.
- PDSCH (or PUSCH) transmitted using minislots may be referred to as PDSCH (PUSCH) mapping type B.
- Radio frames, subframes, slots, minislots, and symbols all represent time units when transmitting signals. Other names may be used for the radio frame, subframe, slot, minislot, and symbol. Note that time units such as frames, subframes, slots, minislots, and symbols in the present disclosure may be read interchangeably.
- one subframe may be called a TTI
- a plurality of consecutive subframes may be called a TTI
- one slot or one minislot may be called a TTI.
- at least one of the subframe and TTI may be a subframe (1ms) in existing LTE, a period shorter than 1ms (for example, 1-13 symbols), or a period longer than 1ms. It may be.
- the unit representing the TTI may be called a slot, minislot, etc. instead of a subframe.
- TTI refers to, for example, the minimum time unit for scheduling in wireless communication.
- a base station performs scheduling to allocate radio resources (frequency bandwidth, transmission power, etc. that can be used by each user terminal) to each user terminal on a TTI basis.
- radio resources frequency bandwidth, transmission power, etc. that can be used by each user terminal
- the TTI may be a transmission time unit of a channel-coded data packet (transport block), a code block, a codeword, etc., or may be a processing unit of scheduling, link adaptation, etc. Note that when a TTI is given, the time interval (for example, the number of symbols) to which transport blocks, code blocks, code words, etc. are actually mapped may be shorter than the TTI.
- one slot or one minislot is called a TTI
- one or more TTIs may be the minimum time unit for scheduling.
- the number of slots (minislot number) that constitutes the minimum time unit of the 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.
- TTI TTI in 3GPP Rel. 8-12
- normal TTI long TTI
- normal subframe normal subframe
- long subframe slot
- TTI that is shorter than the normal TTI may be referred to as an abbreviated TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.
- long TTI for example, normal TTI, subframe, etc.
- short TTI for example, short TTI, etc. It may also be read as a TTI having the above TTI length.
- a resource block is a resource allocation unit in the time domain and frequency domain, and may include one or more continuous subcarriers (subcarriers) in the frequency domain.
- the number of subcarriers included in an RB may be the same regardless of the numerology, and may be 12, for example.
- 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 have a length of one slot, one minislot, one subframe, or one TTI.
- One TTI, one subframe, etc. may each be composed of one or more resource blocks.
- one or more RBs include a physical resource block (Physical RB (PRB)), a sub-carrier group (SCG), a resource element group (REG), and a PRB/RB. It may also be called a group/set/pair.
- PRB Physical resource block
- SCG sub-carrier group
- REG resource element group
- a resource block may be configured by one or more resource elements (REs).
- REs resource elements
- 1 RE may be a radio resource region of 1 subcarrier and 1 symbol.
- Bandwidth Part (also called partial bandwidth, etc.) refers to a subset of consecutive common resource blocks (RB) for a certain numerology in a certain carrier.
- the common RB may be specified by an RB index based on a common reference point of the carrier.
- PRBs may be defined in a BWP and numbered within that BWP.
- BWP may include UL BWP (BWP for UL) and DL BWP (BWP for DL).
- BWP UL BWP
- BWP for DL DL BWP
- One or more BWPs may be configured within one carrier for a UE.
- 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 of the active BWP.
- “cell”, “carrier”, etc. in the present disclosure may be replaced with "BWP”.
- the structures of the radio frame, subframe, slot, minislot, symbol, etc. described above 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 symbols included in an RB The number of subcarriers, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, and other configurations can be changed in various ways.
- radio resources may be indicated by a predetermined index.
- data, instructions, commands, information, signals, bits, symbols, chips, etc. which may be referred to throughout the above description, may refer to voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may also be represented by a combination of
- information, signals, etc. may be output from the upper layer to the lower layer and from the lower layer to at least one of the upper layer.
- Information, signals, etc. may be input and output via multiple network nodes.
- Input/output information, signals, etc. may be stored in a specific location (for example, memory) or may be managed using a management table. Information, signals, etc. that are input and output can be overwritten, updated, or added. The output information, signals, etc. may be deleted. The input information, signals, etc. may be transmitted to other devices.
- 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 physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), upper 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 thereof It may be carried out by physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), upper 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 thereof It may be carried out by
- the physical layer signaling may also be called Layer 1/Layer 2 (L1/L2) control information (L1/L2 control signal), L1 control information (L1 control signal), etc.
- RRC signaling may be called an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like.
- MAC signaling may be notified using, for example, a MAC Control Element (CE).
- CE MAC Control Element
- notification of prescribed information is not limited to explicit notification, but may be made implicitly (for example, by not notifying the prescribed information or by providing other information) (by notification).
- the determination may be made by a value expressed by 1 bit (0 or 1), or by a boolean value expressed by true or false. , may be performed by numerical comparison (for example, comparison with a predetermined value).
- Software includes instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, whether referred to as software, firmware, middleware, microcode, hardware description language, or by any other name. , should be broadly construed to mean an application, software application, software package, routine, subroutine, object, executable, thread of execution, procedure, function, etc.
- software, instructions, information, etc. may be sent and received via a transmission medium.
- a transmission medium such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.
- wired technology such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.
- wireless technology such as infrared, microwave, etc.
- Network may refer to devices (eg, base stations) included in the network.
- precoding "precoding weight”
- QCL quadsi-co-location
- TCI state "Transmission Configuration Indication state
- space space
- spatial relation "spatial domain filter”
- transmission power "phase rotation”
- antenna port "antenna port group”
- layer "number of layers”
- Terms such as “rank”, “resource”, “resource set”, “resource group”, “beam”, “beam width”, “beam angle”, “antenna”, “antenna element”, and “panel” are interchangeable.
- Base Station BS
- Wireless base station Wireless base station
- Fixed station NodeB
- eNB eNodeB
- gNB gNodeB
- Access point "Transmission Point (TP)”, “Reception Point (RP)”, “Transmission/Reception Point (TRP)”, “Panel”
- cell “sector,” “cell group,” “carrier,” “component carrier,” and the like
- a base station is sometimes referred to by terms such as macrocell, small cell, femtocell, and picocell.
- a base station can accommodate one or more (eg, three) cells. If a base station accommodates multiple cells, the overall coverage area of the base station can be partitioned into multiple smaller areas, and each smaller area is connected to a base station subsystem (e.g., an indoor small base station (Remote Radio Communication services can also be provided by the Head (RRH)).
- a base station subsystem e.g., an indoor small base station (Remote Radio Communication services can also be provided by the Head (RRH)
- RRH Remote Radio Communication services
- the term “cell” or “sector” refers to part or all of the coverage area of a base station and/or base station subsystem that provides communication services in this coverage.
- a base station transmitting information to a terminal may be interchanged with the base station instructing the terminal to control/operate based on the information.
- MS Mobile Station
- UE User Equipment
- a mobile station is 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 a base station and a mobile station may be called a transmitting device, a receiving device, a wireless communication device, etc.
- a transmitting device may be called a transmitting device, a receiving device, a wireless communication device, etc.
- the base station and the mobile station may be a device mounted on a moving object, the moving object itself, or the like.
- the moving body refers to a movable object, and the moving speed is arbitrary, and naturally includes cases where the moving body is stopped.
- the mobile objects include, for example, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, carts, rickshaws, and ships (ships and other watercraft). , including, but not limited to, airplanes, rockets, artificial satellites, drones, multicopters, quadcopters, balloons, and items mounted thereon.
- the mobile object may be a mobile object that autonomously travels based on a travel command.
- the moving object may be a vehicle (for example, a car, an airplane, etc.), an unmanned moving object (for example, a drone, a self-driving car, etc.), or a robot (manned or unmanned). ).
- a vehicle for example, a car, an airplane, etc.
- an unmanned moving object for example, a drone, a self-driving car, etc.
- a robot manned or unmanned.
- at least one of the base station and the mobile station includes 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. 12 is a diagram illustrating 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 (current sensor 50, (including a rotation speed sensor 51, an air pressure sensor 52, a vehicle speed sensor 53, an acceleration sensor 54, an accelerator pedal sensor 55, a brake pedal sensor 56, a shift lever sensor 57, and an object detection sensor 58), an information service section 59, and a communication module 60. Be prepared.
- the drive unit 41 is composed of, for example, at least one of an engine, a motor, and a hybrid of an engine and a motor.
- the steering unit 42 includes at least a steering wheel (also referred to as a steering wheel), 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 includes a microprocessor 61, a memory (ROM, RAM) 62, and a communication port (for example, an input/output (IO) port) 63. Signals from various sensors 50-58 provided in the vehicle are input to the electronic control unit 49.
- the electronic control section 49 may be called an electronic control unit (ECU).
- the signals from the various sensors 50 to 58 include a current signal from the current sensor 50 that senses the current of the motor, a rotation speed signal of the front wheel 46/rear wheel 47 obtained by the rotation speed sensor 51, and a signal obtained by the air pressure sensor 52.
- air pressure signals of the front wheels 46/rear wheels 47 a vehicle speed signal acquired by the vehicle speed sensor 53, an acceleration signal acquired by the acceleration sensor 54, a depression amount signal of the accelerator pedal 43 acquired by the accelerator pedal sensor 55, and a brake pedal sensor.
- 56 a shift lever 45 operation signal obtained by the shift lever sensor 57, and an object detection sensor 58 for detecting obstacles, vehicles, pedestrians, etc. There are signals etc.
- the information service department 59 includes various devices such as car navigation systems, audio systems, speakers, displays, televisions, and radios that provide (output) various information such as driving information, traffic information, and entertainment information, and these devices. It consists of one or more ECUs that control the The information service unit 59 provides various information/services (for example, multimedia information/multimedia services) to the occupants of the vehicle 40 using information acquired from an external device via the communication module 60 or the like.
- various information/services for example, multimedia information/multimedia services
- the information service unit 59 may include an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, etc.) that accepts input from the outside, and an output device that performs output to the outside (for example, display, speaker, LED lamp, touch panel, etc.).
- an input device for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, etc.
- an output device that performs output to the outside (for example, display, speaker, LED lamp, touch panel, etc.).
- the driving support system unit 64 includes millimeter wave radar, Light Detection and Ranging (LiDAR), a camera, a positioning locator (for example, Global Navigation Satellite System (GNSS), etc.), and map information (for example, High Definition (HD)). maps, autonomous vehicle (AV) maps, etc.), gyro systems (e.g., inertial measurement units (IMUs), inertial navigation systems (INS), etc.), artificial intelligence ( Artificial Intelligence (AI) chips, AI processors, and other devices that provide functions to prevent accidents and reduce the driver's driving burden, as well as one or more devices that control these devices. It consists of an ECU. Further, the driving support system section 64 transmits and receives various information via the communication module 60, and realizes a driving support function or an automatic driving function.
- LiDAR Light Detection and Ranging
- GNSS Global Navigation Satellite System
- HD High Definition
- maps for example, autonomous vehicle (AV) maps, etc.
- gyro systems e.g.,
- 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 communicates via the communication port 63 with 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, which are included in the vehicle 40.
- Data (information) is transmitted and received between the axle 48, the microprocessor 61 and memory (ROM, RAM) 62 in the electronic control unit 49, and various sensors 50-58.
- 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 external devices. For example, various information is transmitted and received with an 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 base station 10, user terminal 20, etc. described above.
- the communication module 60 may be, for example, at least one of the base station 10 and the user terminal 20 described above (it may function as at least one of the base station 10 and the user terminal 20).
- the communication module 60 receives signals from the various sensors 50 to 58 described above that are input to the electronic control unit 49, information obtained based on the signals, and input from the outside (user) obtained via the information service unit 59. At least one of the information based on the information may be transmitted to an external device via wireless communication.
- the electronic control unit 49, various sensors 50-58, information service unit 59, etc. may be called an input unit that receives 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, inter-vehicle information, etc.) transmitted from an external device, and displays it on the information service section 59 provided in the vehicle.
- the information service unit 59 is an output unit that outputs information (for example, outputs information to devices such as a display and a speaker based on the PDSCH (or data/information decoded from the PDSCH) received by the communication module 60). may be called.
- the communication module 60 also stores various information received from external devices into a memory 62 that can be used by the microprocessor 61. Based on the information stored in the memory 62, the microprocessor 61 controls the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, and left and right rear wheels provided in the vehicle 40. 47, axle 48, various sensors 50-58, etc. may be controlled.
- the base station in the present disclosure may be replaced by a user terminal.
- communication between a base station and a user terminal is replaced with communication between multiple user terminals (for example, it may be called Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.).
- D2D Device-to-Device
- V2X Vehicle-to-Everything
- each aspect/embodiment of the present disclosure may be applied.
- the user terminal 20 may have the functions that the base station 10 described above has.
- words such as "uplink” and “downlink” may be replaced with words corresponding to inter-terminal communication (for example, "sidelink”).
- uplink channels, downlink channels, etc. may be replaced with sidelink channels.
- the user terminal in the present disclosure may be replaced with a base station.
- the base station 10 may have the functions that the user terminal 20 described above has.
- the operations performed by the base station may be performed by its upper node in some cases.
- various operations performed for communication with a terminal may be performed by the base station, one or more network nodes other than the base station (e.g. It is clear that this can be performed by a Mobility Management Entity (MME), a Serving-Gateway (S-GW), etc. (though not limited thereto), or a combination thereof.
- MME Mobility Management Entity
- S-GW Serving-Gateway
- Each aspect/embodiment described in this disclosure may be used alone, in combination, or may be switched and used in accordance with execution. Further, the order of the processing procedures, sequences, flowcharts, etc. of each aspect/embodiment described in this disclosure may be changed as long as there is no contradiction. For example, the methods described in this disclosure use an example order to present elements of the various steps and are not limited to the particular order presented.
- LTE Long Term Evolution
- LTE-A LTE-Advanced
- LTE-B LTE-Beyond
- SUPER 3G IMT-Advanced
- 4G 4th generation mobile communication system
- 5G 5th generation mobile communication system
- 6G 6th generation mobile communication system
- xG x is an integer or decimal number, for example
- Future Radio Access FAA
- RAT New-Radio Access Technology
- NR New Radio
- NX New radio access
- FX Future generation radio access
- GSM registered trademark
- CDMA2000 Code Division Multiple Access
- UMB Ultra Mobile Broadband
- IEEE 802 .11 Wi-Fi (registered trademark)
- IEEE 802.16 WiMAX (registered trademark)
- IEEE 802.20 Ultra-WideBand (UWB), Bluetooth (registered trademark), and other appropriate wireless communication methods.
- the present invention may be applied to systems to be used, next-generation systems expanded, modified,
- the phrase “based on” does not mean “based solely on” unless explicitly stated otherwise. In other words, the phrase “based on” means both “based only on” and “based at least on.”
- any reference to elements using the designations "first,” “second,” etc. does not generally limit the amount or order of those elements. These designations may be used in this disclosure as a convenient way to distinguish between two or more elements. Thus, 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 any way.
- determining may encompass a wide variety of actions. For example, “judgment” can mean judging, calculating, computing, processing, deriving, investigating, looking up, search, inquiry ( For example, searching in a table, database, or other data structure), ascertaining, etc. may be considered to be “determining.”
- judgment (decision) includes receiving (e.g., receiving information), transmitting (e.g., sending information), input (input), output (output), access ( may be considered to be “determining”, such as accessing data in memory (eg, accessing data in memory).
- judgment is considered to mean “judging” resolving, selecting, choosing, establishing, comparing, etc. Good too.
- judgment (decision) may be considered to be “judgment (decision)” of some action.
- the "maximum transmit power" described in this disclosure may mean the maximum value of transmit power, the nominal maximum transmit power (the nominal UE maximum transmit power), or the rated maximum transmit power (the It may also mean rated UE maximum transmit power).
- connection refers to any connection or coupling, direct or indirect, between two or more elements.
- the coupling or connection between elements may be physical, logical, or a combination thereof. For example, "connection” may be replaced with "access.”
- microwave when two elements are connected, they may be connected using one or more electrical wires, cables, printed electrical connections, etc., as well as in the radio frequency domain, microwave can be considered to be “connected” or “coupled” to each other using electromagnetic energy having wavelengths in the light (both visible and invisible) range.
- a and B are different may mean “A and B are different from each other.” Note that the term may also mean that "A and B are each different from C”. Terms such as “separate” and “coupled” may also be interpreted similarly to “different.”
- the i-th (i is any integer), not only in the elementary, comparative, and superlative, but also interchangeably (for example, "the highest” can be interpreted as “the i-th highest”). may be read interchangeably).
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Abstract
Description
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。
UE電力クラスは、NRキャリアのチャネル帯域幅内の送信帯域幅に対する最大出力電力(公称(nominal)最大出力電力、公称UE電力、UE最大出力電力)を規定する。
以下のいずれかの条件が満たされる場合、電力クラス(PC)2 UEに対するΔP_PowerClass=3dBであり、PC1.5 UEに対するΔP_PowerClass=6dBである。
・23dBm以下のp-Maxが指示される。
・UE能力maxUplinkDutyCycle-PC2-FR1のフィールドが存在せず、UE能力maxUplinkDutyCycle-MPE-FR1のフィールドが存在せず、ある評価期間(certain evaluation period)内に送信されるULシンボルのパーセンテージが50%より高い。
・UE能力maxUplinkDutyCycle-PC2-FR1のフィールドが存在し、ある評価期間に送信されるULシンボルのパーセンテージがmaxUplinkDutyCycle-PC2-FR1より高い(厳密な評価期間は1無線フレームよりも短い)。
・UE能力maxUplinkDutyCycle-MPE-FR1のフィールドが存在し、ある評価期間に送信されるULシンボルのパーセンテージがmaxUplinkDutyCycle-MPE-FR1より高い(厳密な評価期間は1無線フレームよりも短い)。
以下のいずれかの条件が満たされる場合、PC1.5 UEに対するΔP_PowerClass=3dBである。
・23dBm及び26dBmの間のp-Maxが指示される。
・UE能力maxUplinkDutyCycle-PC2-FR1のフィールドが存在せず、UE能力maxUplinkDutyCycle-MPE-FR1のフィールドが存在せず、ある評価期間(certain evaluation period)内に送信されるULシンボルのパーセンテージが25%及び50%の間である。
・UE能力maxUplinkDutyCycle-PC2-FR1のフィールドが存在し、ある評価期間に送信されるULシンボルのパーセンテージがmaxUplinkDutyCycle-PC2-FR1及びmaxUplinkDutyCycle-PC2-FR1/2の間である(厳密な評価期間は1無線フレームよりも短い)。
・UE能力maxUplinkDutyCycle-MPE-FR1のフィールドが存在し、ある評価期間に送信されるULシンボルのパーセンテージがmaxUplinkDutyCycle-MPE-FR1より高い(厳密な評価期間は1無線フレームよりも短い)。
もしUEがsupplemental uplink(SUL)設定を伴って設定され、且つ、UEが電力クラス2を示すバンドにおいて、仕様に規定されたデフォルト電力クラスの要件が適用される場合、ΔP_PowerClass=3dBである。
送信ダイバーシティ(txDiversity-r16)能力を伴うPC2能力のUE、又は、PC1.5能力のUEが、SRS送信スイッチ(SRS-TXSwitch)能力't1r2'又は't1r4'又は't1r1-t1r2'又は't1r1-t1r2-t1r4'を示す場合、1つのSRSポートからなる各SRSリソースセット内に設定されたSRSリソースを伴い、アンテナスイッチング('antennaSwitching')とセットされたSRS-ResourceSet内の用途(usage)を伴うSRS送信オケージョン中において、ΔP_PowerClass=3dBが適用される。
各実施形態において、上りリンク(UL)送信は、PUSCH、PUCCH、SRS、の少なくとも1つを含んでもよい。
新規電力クラスが規定されてもよい。
30dBm以上の公称最大出力電力を伴う新規電力クラスが規定されてもよい。これによって、ULリソースを犠牲にすることなく(例えば、繰り返しを伴わずに)、UL送信のカバレッジを拡大することができる。
・Txチェーン(RFチェーン、power amplifiers(PAs))の数が2以上である。
・パブリックセーフティのみ。
・携帯デバイスではないデバイス、又は、通話機能を持たないデバイス。
23dBmより低い公称最大出力電力を伴う新規電力クラスが規定されてもよい。これによって、より合理的な/より安いコストによってUEが実装されることができる。
・通常のUEよりも削減された能力を有するUE(eRedCap、IoTデバイスなど)のみ。
UEは、UL送信(第2UL送信)に対する設定最大出力電力(例えば、P_CMAX、第2送信電力の上限)の決定に、UL送信(1つ以上の第1UL送信)に用いられるリソースの実際の量(実送信リソース量、実送信時間、第1送信電力)を考慮してもよい。そのUL送信は、過去のUL送信を含んでもよいし、その設定最大出力電力を用いるUL送信を含んでもよい。そのリソースは、時間リソースであってもよいし、周波数リソースであってもよい。
UEは、UL送信に用いられるリソースの実際の量を考慮し、デフォルト最大出力電力に基づいて、追加の利用可能な電力(追加電力、追加量、調整量)を計算してもよい。デフォルト最大出力電力は、デフォルトPCの公称最大出力電力(23dBm)であってもよい。
UEは、対応する電力クラスに対して規定された公称最大出力電力に基づいて、規定された公称最大出力電力からの調整電力(削減電力、調整量)を計算してもよい。ここで、規定された公称最大出力電力は、デフォルト最大出力電力であってもよい。
UEは、UL送信(第2UL送信)に対する設定最大出力電力(例えば、P_CMAX、第2送信電力の上限)の決定に、UL送信(1つ以上の第1UL送信)に割り当てられた実送信電力(実送信時間、実送信エネルギー、第1送信電力)を考慮してもよい。そのUL送信は、過去のUL送信を含んでもよいし、その設定最大出力電力を用いるUL送信を含んでもよい。そのリソースは、時間リソースであってもよいし、周波数リソースであってもよい。設定最大出力電力が最適化されることができる。
以下の少なくとも1つのファクタが、設定最大電力の決定に考慮されてもよい。
例えば、その実送信電力は、RRC設定されるパラメータ、パスロス、送信される内容、帯域幅(例えば、RB数)、クローズドループ電力制御パラメータ、少なくとも1つに基づいてもよい。
その継続時間は、そのUL送信のシンボルの総数であってもよいし、そのUL送信のスロット数であってもよい。
その継続時間は、無線フレーム(10ms)の数であってもよいし、msの単位で表されてもよい。
例えば、全体のエネルギー=送信電力[ms]*UL送信の継続時間/評価期間の継続時間であってもよい。
その継続時間は、そのUL送信のシンボルの総数であってもよいし、そのUL送信のスロット数であってもよい。
そのMPRは、dBの単位で表される値であってもよい。
メトリック(測定基準、例えば、エネルギー予算、消費エネルギーなど)が新たに規定されてもよい。
エネルギー予算(energy budget)が、デフォルト最大出力電力(例えば、23dBm又はその線形値)と、評価期間の継続時間と、の積として規定されてもよい。
消費エネルギー(consumed energy)が、評価期間内の各UL送信の実送信電力(dB値又は線形値)及び継続時間の積の、和として規定されてもよい。
厳密な評価期間が規定されてもよい。
・スロット/シンボルの数。
・無線フレーム(10ms)の数。
・絶対時間(例えば、1ms、10ms、1secなど)。
・UL送信の開始。図5Aの例において、評価期間の終了は、次のUL#2の開始であってもよい。
・UL送信の終了。図5Bの例において、評価期間の開始は、次のUL#2の終了であってもよい。
厳密なサブ評価期間(sub-evaluation period)が規定されてもよい。
・スロット/シンボルの数。
・無線フレーム(10ms)の数。
・絶対時間(例えば、1ms、10ms、1secなど)。
UL送信に割り当てられた実送信電力を考慮する設定最大出力電力の決定の動作が規定されてもよい。
評価期間は、後続のUL送信の開始において終了する。評価期間内の消費エネルギーが計算される。消費エネルギーは、エネルギー予算と比較される。もし消費エネルギーがエネルギー予算と等しい、又は、もしエネルギー予算よりも大きい場合、後続のUL送信に対し、デフォルト最大出力電力までの電力が用いられると見なされる。もし消費エネルギーがエネルギー予算とよりも小さい場合、後続のUL送信に対し、設定最大出力電力は、デフォルト最大出力電力よりも大きくてもよい。
評価期間は、後続のUL送信の終了において終了する。評価期間内の消費エネルギーが計算される。消費エネルギーは、エネルギー予算と比較される。もし消費エネルギーがエネルギー予算と等しい、又は、もしエネルギー予算よりも大きい場合、後続のUL送信に対し、デフォルト最大出力電力までの電力が用いられると見なされる。もし消費エネルギーがエネルギー予算とよりも小さい場合、設定最大出力電力は、エネルギー予算の残りと、後続のUL送信の継続時間と、の少なくとも1つに基づいて、決定されてもよい。例えば、設定最大出力電力は=エネルギー予算の残り/後続のUL送信の継続時間、であってもよい。
上述の実施形態の少なくとも1つの動作は、特定のUE能力(UE capability)を報告した又は当該特定のUE能力をサポートするUEに対してのみ適用されてもよい。
・6G又は新たに規定されるradio access technology(RAT)をサポートすること。
・新規UE電力クラスをサポートすること。
・以前のUL送信に用いられたリソースの量を考慮する最大出力電力の決定/設定をサポートすること。
・実際のUL送信に用いられたリソースの量を考慮する最大出力電力の決定/設定をサポートすること。
・実最大出力電力の決定のためのファクタに関する報告をサポートすること。
本開示の一実施形態に関して、以下の発明を付記する。
[付記1]
特定の最大出力電力と、1つ以上の第1上りリンク送信に用いられるリソース量と、前記1つ以上の第1上りリンク送信に用いられる第1送信電力と、の少なくとも1つに基づいて、第2上りリンク送信の第2送信電力の上限を決定する制御部と、
前記第2送信電力を用いて前記第2上りリンク送信を行う送信部と、を有する端末。
[付記2]
前記制御部は、前記特定の最大出力電力に基づく値に、前記リソース量に基づく調整量を加算又は減算することによって、前記上限を決定する、付記1に記載の端末。
[付記3]
前記制御部は、特定の期間内の前記特定の最大出力電力に基づいて利用可能エネルギーを決定し、前記利用可能エネルギーに基づいて前記特定の期間内の前記上限を決定する、付記1又は付記2に記載の端末。
[付記4]
前記特定の最大出力電力は、30dBm以上である、又は、23dBmより低い、付記1から付記3のいずれかに記載の端末。
以下、本開示の一実施形態に係る無線通信システムの構成について説明する。この無線通信システムでは、本開示の上記各実施形態に係る無線通信方法のいずれか又はこれらの組み合わせを用いて通信が行われる。
図9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10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)
- 特定の最大出力電力と、1つ以上の第1上りリンク送信に用いられるリソース量と、前記1つ以上の第1上りリンク送信に用いられる第1送信電力と、の少なくとも1つに基づいて、第2上りリンク送信の第2送信電力の上限を決定する制御部と、
前記第2送信電力を用いて前記第2上りリンク送信を行う送信部と、を有する端末。 - 前記制御部は、前記特定の最大出力電力に基づく値に、前記リソース量に基づく調整量を加算又は減算することによって、前記上限を決定する、請求項1に記載の端末。
- 前記制御部は、特定の期間内の前記特定の最大出力電力に基づいて利用可能エネルギーを決定し、前記利用可能エネルギーに基づいて前記特定の期間内の前記上限を決定する、請求項1に記載の端末。
- 前記特定の最大出力電力は、30dBm以上である、又は、23dBmより低い、請求項1に記載の端末。
- 特定の最大出力電力と、1つ以上の第1上りリンク送信に用いられるリソース量と、前記1つ以上の第1上りリンク送信に用いられる第1送信電力と、の少なくとも1つに基づいて、第2上りリンク送信の第2送信電力の上限を決定するステップと、
前記第2送信電力を用いて前記第2上りリンク送信を行うステップと、を有する、端末の無線通信方法。 - 1つ以上の第1上りリンク送信の受信を制御する制御部と、
第2上りリンク送信の受信を行う受信部と、を有し、
前記第2上りリンク送信の第2送信電力の上限は、特定の最大出力電力と、前記1つ以上の第1上りリンク送信に用いられるリソース量と、前記1つ以上の第1上りリンク送信に用いられる第1送信電力と、の少なくとも1つに基づく、基地局。
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| PCT/JP2022/024668 WO2023248330A1 (ja) | 2022-06-21 | 2022-06-21 | 端末、無線通信方法及び基地局 |
| CN202280099142.0A CN119698885A (zh) | 2022-06-21 | 2022-06-21 | 终端、无线通信方法以及基站 |
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| WO2013108315A1 (ja) * | 2012-01-17 | 2013-07-25 | 日本電気株式会社 | 無線通信システム、送信電力制御装置、基地局装置、パラメータ供給装置、及び送信電力制御方法 |
| JP2016532326A (ja) * | 2013-09-27 | 2016-10-13 | サン パテント トラスト | デュアルコネクティビティにおける電力制御および電力ヘッドルーム報告 |
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| US11503554B2 (en) * | 2020-05-13 | 2022-11-15 | Sprint Spectrum L.P. | Dynamically accounting for past transmit power as basis to set future transmit power on co-existing air interface |
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| WO2013108315A1 (ja) * | 2012-01-17 | 2013-07-25 | 日本電気株式会社 | 無線通信システム、送信電力制御装置、基地局装置、パラメータ供給装置、及び送信電力制御方法 |
| JP2016532326A (ja) * | 2013-09-27 | 2016-10-13 | サン パテント トラスト | デュアルコネクティビティにおける電力制御および電力ヘッドルーム報告 |
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| SAMSUNG: "CR to TS 38.213 capturing the RAN1#92bis and RAN1#93 meeting agreements and aligning higher layer parameters with TS 38.331", 3GPP DRAFT; 38213_CR0002R1_(REL-15)_R1-1807957 38.213 RAN1#93, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Busan, Korea; 20180521 - 20180525, 7 June 2018 (2018-06-07), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051452985 * |
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