WO2020091498A1 - Procédé de fonctionnement d'un terminal et d'une station de base dans un système de communication sans fil et appareil permettant de prendre en charge ledit procédé - Google Patents

Procédé de fonctionnement d'un terminal et d'une station de base dans un système de communication sans fil et appareil permettant de prendre en charge ledit procédé Download PDF

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Publication number
WO2020091498A1
WO2020091498A1 PCT/KR2019/014692 KR2019014692W WO2020091498A1 WO 2020091498 A1 WO2020091498 A1 WO 2020091498A1 KR 2019014692 W KR2019014692 W KR 2019014692W WO 2020091498 A1 WO2020091498 A1 WO 2020091498A1
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Prior art keywords
csi
resource
terminal
cmr
qcl
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PCT/KR2019/014692
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English (en)
Korean (ko)
Inventor
이길봄
강지원
박종현
김규석
김기준
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엘지전자 주식회사
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Publication of WO2020091498A1 publication Critical patent/WO2020091498A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path

Definitions

  • the following description relates to a wireless communication system, and a terminal associated with an operation for reporting a signal to interference noise ratio (SINR) related to a specific reference signal (eg, channel state information-reference signal, etc.) in a wireless communication system And a method for operating the base station and an apparatus supporting the same.
  • SINR signal to interference noise ratio
  • a wireless access system is a multiple access system capable of supporting communication with multiple users by sharing available system resources (bandwidth, transmission power, etc.).
  • Examples of the multiple access system include a code division multiple access (CDMA) system, a frequency division multiple access (FDMA) system, a time division multiple access (TDMA) system, an orthogonal frequency division multiple access (OFDMA) system, and a single carrier frequency (SC-FDMA). division multiple access) system.
  • CDMA code division multiple access
  • FDMA frequency division multiple access
  • TDMA time division multiple access
  • OFDMA orthogonal frequency division multiple access
  • SC-FDMA single carrier frequency division multiple access
  • the present disclosure provides a method of operating a terminal and a base station in a wireless communication system and devices supporting the same.
  • the present disclosure provides a method of operating a terminal and a base station in a wireless communication system and apparatuses therefor.
  • a physical downlink control channel (PDCCH) signal during an on duration based on a set discontinuous reception (DRX) operation Conducting monitoring; Based on the PDCCH signal successfully detected during the on period, operating in an awake state for a certain period of time; In the awake state, receiving a plurality of channel measurement resource (CMR) settings and one or more interference measurement resource (IMR) settings for signal to interference noise ratio (SINR) reporting from a base station; In the awake state, based on the assumption that two or more CMR settings having the same QCL (Quasi Co Located) source in terms of related spatial parameters among the plurality of CMR settings share the same IMR setting, the plurality of Calculate SINR related to CMR settings; And reporting the SINR associated with the plurality of CMR settings to the base station in the awake state.
  • CMR channel measurement resource
  • IMR interference measurement resource
  • SINR signal to interference noise ratio
  • the CMR settings and the one or more interference measurement resource settings may be received through higher layer signaling.
  • one CMR configuration includes a non-zero power channel state information-reference signal (NZP CSI-RS) resource or a synchronization signal / physical broadcast channel (SS). / PBCH) block resource
  • NZP CSI-RS non-zero power channel state information-reference signal
  • SS physical broadcast channel
  • CSI-IM channel state information-interference measurement
  • NZP CSI-RS non-zero power channel state information reference signal
  • the number of the one or more IMR settings is less than the number of the plurality of CMR settings, based on at least two CMR settings having the same QCL source in terms of related spatial parameters. Can be set.
  • the plurality of CMR settings and the one or more IMR settings may be related in resource wise.
  • the QCL source in terms of the related spatial parameters may be determined based on spatial reception parameters (spatial Rx parameters).
  • the QCL source in terms of the related spatial parameters includes: channel state information-reference signal (CSI-RS) resource information or synchronization signal / physical broadcast channel; SS / PBCH) block information or tracking reference signal (TRS) information.
  • CSI-RS channel state information-reference signal
  • SS / PBCH synchronization signal / physical broadcast channel
  • TRS tracking reference signal
  • the QCL source in terms of the spatial parameters involved may include one or more of the following.
  • the SINR associated with one CMR setting among the plurality of CMR settings includes: (i) a reference signal received power (RSRP) measured based on the one CMR setting, and (ii) ) It can be calculated based on the interference power measured based on the IMR setting related to the one CMR setting.
  • RSRP reference signal received power
  • the terminal may select the one. It can be assumed that the CMR setting of and the one IMR setting have the QCL source in terms of the same spatial parameter.
  • the SINR may include L1-SINR defined as physical layer information.
  • the terminal may correspond to at least one of the following.
  • the first terminal reporting the UE capability information indicating that the number of receive beams that can be simultaneously defined is 1 to the base station
  • a terminal operating in a wireless communication system comprising: at least one transmitter; At least one receiver; At least one processor; And at least one memory operatively connected to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform a specific operation, wherein the specific operation is: a set DRX.
  • a (discontinuous reception) operation monitoring of a physical downlink control channel (PDCCH) signal during an on duration; Based on the PDCCH signal successfully detected during the on period, operating in an awake state for a certain period of time; In the awake state, receiving a plurality of channel measurement resource (CMR) settings and one or more interference measurement resource (IMR) settings for signal to interference noise ratio (SINR) reporting from a base station; In the awake state, based on the assumption that two or more CMR settings having the same QCL (Quasi Co Located) source in terms of related spatial parameters among the plurality of CMR settings share the same IMR setting, the plurality of Calculate SINR related to CMR settings; And reporting the SINR associated with the plurality of CMR settings to the base station in the awake state.
  • CMR channel measurement resource
  • IMR interference measurement resource
  • SINR signal to interference noise ratio
  • the terminal may communicate with at least one of a mobile terminal, a network, and an autonomous vehicle other than a vehicle including the terminal.
  • a base station operating in a wireless communication system comprising: at least one transmitter; At least one receiver; At least one processor; And at least one memory operatively connected to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform a specific operation, wherein the specific operation is: Transmitting a physical downlink control channel (PDCCH) signal to the terminal during an on duration for the terminal based on the established DRX (discontinuous reception) operation; As the terminal operating in an awake state by the PDCCH signal, a plurality of channel measurement resource (CMR) settings for reporting a signal to interference noise ratio (SINR) and one or more interference measurement resources (interference) measurement resource (IMR) configuration is transmitted, but two or more CMR configurations having the same QCL (Quasi Co Located) source in terms of related spatial parameters among the plurality of CMR configurations are configured to share the same IMR configuration; And receiving SINRs associated with the plurality of CMR settings from the terminal.
  • PDCCH physical downlink control
  • the signaling overhead for the base station to provide CMR configuration information and IMR configuration information to the terminal can be reduced.
  • the base station can set the CMR setting and the IMR setting having the QCL source from the viewpoint of the same spatial parameter on the same time interval. Accordingly, the terminal and the base station can minimize the latency (latency) of the SINR report.
  • 1 is a view for explaining a physical channel and a signal transmission method using them.
  • FIG. 2 is a diagram illustrating a structure of a radio frame based on an NR system to which embodiments of the present disclosure are applicable.
  • FIG. 3 is a diagram illustrating a slot structure based on an NR system to which embodiments of the present disclosure are applicable.
  • FIG. 4 is a diagram illustrating a self-contained slot structure based on an NR system to which embodiments of the present disclosure are applicable.
  • FIG. 5 is a diagram illustrating one REG structure based on an NR system to which embodiments of the present disclosure are applicable.
  • FIG. 6 illustrates a communication system applied to the present disclosure.
  • FIG. 7 illustrates a wireless device that can be applied to the present disclosure.
  • FIG 8 shows another example of a wireless device applied to the present disclosure.
  • FIG 9 illustrates a portable device applied to the present disclosure.
  • FIG. 10 illustrates a vehicle or autonomous vehicle applied to the present disclosure.
  • 11 to 13 are reference diagrams for describing an operation example of a terminal applicable to the present disclosure.
  • FIG. 14 is a diagram briefly showing an operation example of a terminal and a base station according to an example of the present disclosure
  • FIG. 15 is a flowchart briefly showing an operation example of a terminal according to an example of the present disclosure
  • FIG. 16 is an example of this disclosure It is a flow chart showing an example of the operation of a base station according to
  • 17 is a diagram illustrating an operation example of a terminal and a base station according to the present disclosure.
  • FIGS. 18 and 19 are diagrams briefly illustrating mapping patterns of CSI-RS resources and CSI-IM resources according to examples of the present disclosure.
  • 20 is a diagram briefly showing an example of operation of a base station and a terminal according to the present disclosure.
  • 21 is a diagram briefly showing a network access and communication process between a terminal and a base station applicable to the present disclosure.
  • FIG. 22 is a diagram briefly showing a DRX (Discontinuous Reception) cycle of a terminal applicable to the present disclosure.
  • FIG. 23 is a diagram briefly showing an operation example of a terminal and a base station according to an example of the present disclosure
  • FIG. 24 is a flowchart briefly showing an operation example of a terminal according to an example of the present disclosure
  • FIG. 25 is an example of this disclosure It is a flow chart showing an example of the operation of the base station according to the.
  • each component or feature can be considered to be optional unless stated otherwise.
  • Each component or feature may be implemented in a form that is not combined with other components or features.
  • some components and / or features may be combined to form an embodiment of the present disclosure.
  • the order of the operations described in the embodiments of the present disclosure can be changed. Some configurations or features of one embodiment may be included in other embodiments, or may be replaced with corresponding configurations or features of other embodiments.
  • the base station has a meaning as a terminal node of a network that directly communicates with a mobile station. Certain operations described in this document as being performed by a base station may be performed by an upper node of the base station in some cases.
  • various operations performed for communication with a mobile station in a network consisting of a plurality of network nodes including a base station may be performed by a base station or other network nodes other than the base station.
  • the 'base station' may be replaced by terms such as a fixed station, Node B, eNode B (eNB), gNode B (gNB), advanced base station (ABS), or access point. Can be.
  • a terminal is a user equipment (UE), a mobile station (MS), a subscriber station (SS), or a mobile subscriber station (MSS). , It may be replaced with terms such as a mobile terminal or an advanced mobile station (AMS).
  • UE user equipment
  • MS mobile station
  • SS subscriber station
  • MSS mobile subscriber station
  • AMS advanced mobile station
  • the transmitting end refers to a fixed and / or mobile node that provides a data service or voice service
  • the receiving end refers to a fixed and / or mobile node that receives a data service or voice service. Therefore, in the uplink, a mobile station can be a transmitting end and a base station can be a receiving end. Likewise, in the downlink, a mobile station can be a receiving end, and a base station can be a transmitting end.
  • Embodiments of the present disclosure may be supported by standard documents disclosed in at least one of wireless access systems, IEEE 802.xx system, 3rd Generation Partnership Project (3GPP) system, 3GPP LTE system, 3GPP 5G NR system and 3GPP2 system,
  • 3GPP TS 38.211, 3GPP TS 38.212, 3GPP TS 38.213, 3GPP TS 38.321 and 3GPP TS 38.331 documents may be supported by 3GPP TS 38.211, 3GPP TS 38.212, 3GPP TS 38.213, 3GPP TS 38.321 and 3GPP TS 38.331 documents. That is, obvious steps or parts not described in the embodiments of the present disclosure may be described with reference to the documents. Also, all terms disclosed in this document may be described by the standard document.
  • 3GPP NR system will be described as an example of a radio access system in which embodiments of the present disclosure can be used.
  • CDMA code division multiple access
  • FDMA frequency division multiple access
  • TDMA time division multiple access
  • OFDMA orthogonal frequency division multiple access
  • SC-FDMA single carrier frequency division multiple access
  • embodiments of the present disclosure mainly describe a 3GPP NR system.
  • the embodiment proposed in the present disclosure can be applied to other wireless systems (eg, 3GPP LTE, IEEE 802.16, IEEE 802.11, etc.).
  • a terminal receives information from a base station through downlink (DL) and transmits information to a base station through uplink (UL).
  • the information transmitted and received by the base station and the terminal includes general data information and various control information, and various physical channels exist according to the type / use of the information they transmit and receive.
  • FIG. 1 is a view for explaining a physical channel that can be used in embodiments of the present disclosure and a signal transmission method using the same.
  • the initial cell search operation such as synchronizing with the base station
  • the terminal receives a primary synchronization channel (P-SCH: Primary Synchronization Channel) and a floating channel (S-SCH: Secondary Synchronization Channel) from the base station, synchronizes with the base station, and acquires information such as a cell ID.
  • P-SCH Primary Synchronization Channel
  • S-SCH Secondary Synchronization Channel
  • the terminal may receive a physical broadcast channel (PBCH) signal from the base station to obtain intra-cell broadcast information.
  • PBCH physical broadcast channel
  • the UE may check a downlink channel state by receiving a downlink reference signal (DL RS) in an initial cell search step.
  • DL RS downlink reference signal
  • the UE Upon completion of the initial cell search, the UE receives a physical downlink control channel (PDCCH) and a physical downlink control channel (PDSCH) according to the physical downlink control channel information in step S12, and then a little more. Specific system information can be obtained.
  • PDCCH physical downlink control channel
  • PDSCH physical downlink control channel
  • the terminal may perform a random access procedure (Random Access Procedure) as in steps S13 to S16 afterwards to complete the access to the base station.
  • the UE transmits a preamble through a physical random access channel (PRACH) (S13), and the RAR for the preamble through a physical downlink control channel and a corresponding physical downlink shared channel. Random Access Response) may be received (S14).
  • the UE transmits a PUSCH (Physical Uplink Shared Channel) using scheduling information in the RAR (S15), and a collision resolution procedure such as reception of a physical downlink control channel signal and a corresponding physical downlink shared channel signal (Contention Resolution Procedure) ) Can be performed (S16).
  • PUSCH Physical Uplink Shared Channel
  • Contention Resolution Procedure Contention Resolution Procedure
  • the UE After performing the above-described procedure, the UE receives the physical downlink control channel signal and / or the physical downlink shared channel signal (S17) and the physical uplink shared channel (PUSCH: Physical) as a general uplink / downlink signal transmission procedure.
  • the Uplink Shared Channel (PUCCH) signal and / or the Physical Uplink Control Channel (PUCCH) signal may be transmitted (S18).
  • UCI uplink control information
  • HARQ-ACK / NACK Hybrid Automatic Repeat and reQuest Acknowledgement / Negative-ACK
  • SR Scheduling Request
  • CQI Channel Quality Indication
  • PMI Precoding Matrix Indication
  • RI Rank Indication
  • BI Beam Indication
  • UCI is generally periodically transmitted through PUCCH, but may be transmitted through PUSCH according to an embodiment (eg, when control information and traffic data should be simultaneously transmitted).
  • the UE may periodically transmit UCI through PUSCH by request / instruction of the network.
  • FIG. 2 is a diagram illustrating a structure of a radio frame based on an NR system to which embodiments of the present disclosure are applicable.
  • the uplink and downlink transmission based on the NR system is based on the frame shown in FIG.
  • One radio frame has a length of 10 ms, and is defined as two 5 ms half-frames (HFs).
  • One half-frame is defined by 5 1ms subframes (Subframes, SFs).
  • One subframe is divided into one or more slots, and the number of slots in the subframe depends on subcarrier spacing (SCS).
  • SCS subcarrier spacing
  • Each slot includes 12 or 14 OFDM (A) symbols according to a cyclic prefix (CP). Normally, when CP is used, each slot contains 14 symbols.
  • each slot includes 12 symbols.
  • the symbol may include an OFDM symbol (or CP-OFDM symbol) and an SC-FDMA symbol (or DFT-s-OFDM symbol).
  • Table 1 shows the number of symbols per slot according to the SCS, the number of slots per frame, and the number of slots per subframe when the normal CP is used
  • Table 2 shows the slot number according to the SCS when the extended CSP is used. It indicates the number of symbols, the number of slots per frame, and the number of slots per subframe.
  • N slot symb indicates the number of symbols in the slot
  • N frame indicates the number of slots in the frame
  • ⁇ slot indicates the number of slots in the frame
  • N subframe indicates the number of slots in the subframe
  • OFDM (A) numerology eg, SCS, CP length, etc.
  • a numerology eg, SCS, CP length, etc.
  • a (absolute time) section of a time resource eg, SF, slot, or TTI
  • a time unit TU
  • NR supports multiple numerology (or subcarrier spacing (SCS)) to support various 5G services. For example, when the SCS is 15 kHz, it supports a wide area in traditional cellular bands, and when the SCS is 30 kHz / 60 kHz, it is dense-urban, lower latency. And a wider carrier bandwidth, and when the SCS is 60 kHz or higher, a bandwidth greater than 24.25 GHz is supported to overcome phase noise.
  • numerology or subcarrier spacing (SCS)
  • the NR frequency band is defined as a frequency range of two types (FR1, FR2).
  • FR1, FR2 may be configured as shown in the table below.
  • FR2 may mean millimeter wave (mmW).
  • FIG. 3 is a diagram illustrating a slot structure based on an NR system to which embodiments of the present disclosure are applicable.
  • One slot includes a plurality of symbols in the time domain. For example, in the case of a normal CP, one slot includes 7 symbols, but in the case of an extended CP, one slot includes 6 symbols.
  • the carrier includes a plurality of subcarriers in the frequency domain.
  • Resource block is defined as a plurality of (eg, 12) consecutive subcarriers in the frequency domain.
  • BWP Bandwidth Part
  • P contiguous
  • CP Physical channels
  • the carrier may include up to N (eg, 5) BWPs. Data communication is performed through the activated BWP, and only one BWP can be activated for one terminal.
  • N e.g. 5
  • Each element in the resource grid is referred to as a resource element (RE), and one complex symbol may be mapped.
  • RE resource element
  • FIG. 4 is a diagram illustrating a self-contained slot structure based on an NR system to which embodiments of the present disclosure are applicable.
  • the base station and the UE can sequentially perform DL transmission and UL transmission in one slot, and can transmit and receive DL data and transmit / receive UL ACK / NACK therein in one slot.
  • this structure reduces the time it takes to retransmit data when a data transmission error occurs, thereby minimizing the delay of the final data transmission.
  • a type gap of a certain length of time is required for the base station and the UE to switch from the transmission mode to the reception mode or from the reception mode to the transmission mode.
  • some OFDM symbols at a time point of switching from DL to UL in an independent slot structure may be set as a guard period (GP).
  • the independent slot structure includes both the DL control area and the UL control area has been described, but the control areas may be selectively included in the independent slot structure.
  • the self-supporting slot structure according to the present disclosure may include a case in which only the DL control area or the UL control area is included as well as the case where both the DL control area and the UL control area are included as shown in FIG. 4.
  • one slot may be configured in the order of DL control area / DL data area / UL control area / UL data area, or may be configured in the order of UL control area / UL data area / DL control area / DL data area.
  • the PDCCH may be transmitted in the DL control region, and the PDSCH may be transmitted in the DL data region.
  • PUCCH may be transmitted in the UL control region, and PUSCH may be transmitted in the UL data region.
  • downlink control information for example, DL data scheduling information, UL data scheduling information, and the like may be transmitted.
  • uplink control information for example, ACK / NACK (Positive Acknowledgement / Negative Acknowledgement) information for DL data, CSI (Channel State Information) information, SR (Scheduling Request) may be transmitted.
  • PDSCH carries downlink data (eg, DL-shared channel transport block, DL-SCH TB), and modulation methods such as Quadrature Phase Shift Keying (QPSK), 16 Quadrature Amplitude Modulation (QAMK), 64 QAM, and 256 QAM are used. Applies.
  • a codeword is generated by encoding TB.
  • PDSCH can carry up to two codewords. For each codeword, scrambling and modulation mapping are performed, and modulation symbols generated from each codeword are mapped to one or more layers (Layer mapping). Each layer is mapped to a resource together with a DMRS (Demodulation Reference Signal) and is generated as an OFDM symbol signal and transmitted through a corresponding antenna port.
  • DMRS Demodulation Reference Signal
  • the PDCCH carries downlink control information (DCI) and a QPSK modulation method is applied.
  • DCI downlink control information
  • One PDCCH is composed of 1, 2, 4, 8, and 16 control channel elements (CCEs) according to an aggregation level (AL).
  • CCE is composed of six Resource Element Groups (REGs).
  • REG is defined by one OFDM symbol and one (P) RB.
  • FIG. 5 is a diagram illustrating one REG structure based on an NR system to which embodiments of the present disclosure are applicable.
  • D denotes a resource element (RE) to which DCI is mapped
  • R denotes RE to which DMRS is mapped.
  • DMRS is mapped to the 1st, 5th, and 9th REs in the frequency domain direction within one symbol.
  • CORESET is defined as a set of REGs with a given pneumonology (eg, SCS, CP length, etc.).
  • a plurality of CORESETs for one UE may overlap in the time / frequency domain.
  • CORESET may be set through system information (eg, MIB) or UE-specific higher layer (eg, Radio Resource Control, RRC, layer) signaling.
  • RRC Radio Resource Control
  • the number of RBs and the number of symbols (up to 3) constituting the CORESET may be set by higher layer signaling.
  • PUSCH carries uplink data (eg, UL-shared channel transport block, UL-SCH TB) and / or uplink control information (UCI), and CP-OFDM (Cyclic Prefix-Orthogonal Frequency Division Multiplexing) waveform Or, it is transmitted based on a DFT-s-OFDM (Discrete Fourier Transform-spread-Orthogonal Frequency Division Multiplexing) waveform.
  • DFT-s-OFDM Discrete Fourier Transform-spread-Orthogonal Frequency Division Multiplexing
  • PUSCH may be transmitted based on a waveform or a DFT-s-OFDM waveform.
  • PUSCH transmission is dynamically scheduled by UL grant in DCI, or semi-static based on upper layer (eg, RRC) signaling (and / or Layer 1 (L1) signaling (eg, PDCCH)). Can be scheduled (configured grant).
  • PUSCH transmission may be performed on a codebook basis or a non-codebook basis.
  • PUCCH carries uplink control information, HARQ-ACK and / or scheduling request (SR), and is divided into Short PUCCH and Long PUCCH according to the PUCCH transmission length.
  • Table 4 illustrates PUCCH formats.
  • PUCCH format 0 carries UCI up to 2 bits in size, and is mapped and transmitted based on a sequence. Specifically, the UE transmits one sequence among a plurality of sequences through PUCCH in PUCCH format 0 to transmit a specific UCI to the base station. The UE transmits a PUCCH in PUCCH format 0 in PUCCH resource for setting a corresponding SR only when transmitting a positive SR.
  • PUCCH format 1 carries UCI up to 2 bits in size, and modulation symbols are spread in an orthogonal cover code (OCC) in the time domain (set differently depending on whether frequency hopping is performed).
  • OCC orthogonal cover code
  • DMRS is transmitted on a symbol in which a modulation symbol is not transmitted (ie, time division multiplexing (TDM)).
  • PUCCH format 2 carries UCI having a bit size larger than 2 bits, and modulation symbols are transmitted through DMRS and Frequency Division Multiplexing (FDM).
  • DM-RS is located at symbol indices # 1, # 4, # 7, and # 10 in a given resource block at a density of 1/3.
  • PN Pulseudo Noise sequence is used for the DM_RS sequence.
  • frequency hopping may be activated.
  • PUCCH format 3 does not allow terminal multiplexing in the same physical resource blocks, and carries a UCI having a bit size larger than 2 bits.
  • PUCCH resources of PUCCH format 3 do not include orthogonal cover codes.
  • the modulation symbol is transmitted by DMRS and Time Division Multiplexing (TDM).
  • PUCCH format 4 supports multiplexing up to 4 UEs in the same physical resource block, and carries a UCI having a bit size larger than 2 bits.
  • PUCCH resource of PUCCH format 3 includes an orthogonal cover code.
  • the modulation symbol is transmitted by DMRS and Time Division Multiplexing (TDM).
  • the NR system may support DCI format 0_0 and DCI format 0_1 as DCI formats for PUSCH scheduling, and DCI format 1_0 and DCI format 1_1 as DCI formats for PDSCH scheduling.
  • the NR system can additionally support DCI format 2_0, DCI format 2_1, DCI format 2_2, and DCI format 2_3.
  • DCI format 0_0 is used for scheduling TB (Transmission Block) based (or TB-level) PUSCH
  • DCI format 0_1 is TB (Transmission Block) based (or TB-level) PUSCH or (CBG (Code Block Group) It may be used to schedule CBG-based (or CBG-level) PUSCH) when the base signal transmission / reception is set.
  • CBG Code Block Group
  • DCI format 1_0 is used to schedule TB-based (or TB-level) PDSCH
  • DCI format 1_1 is TB-based (or TB-level) PDSCH or (when CBG-based signal transmission and reception is set) CBG-based (or CBG- level) can be used to schedule the PDSCH.
  • DCI format 2_0 is used to indicate the slot format (slot format) (used for notifying the slot format)
  • DCI format 2_1 is used to inform PRB and OFDM symbols that assume that a specific UE has no intended signal transmission ( used for notifying the PRB (s) and OFDM symbol (s) where UE may assume no transmission is intended for the UE)
  • DCI format 2_2 is used for transmission of Transmission Power Control (TPC) commands of PUCCH and PUSCH
  • DCI format 2_3 may be used for transmission of a group of TPC commands for SRS transmission by one or more UEs (used for the transmission of a group of TPC commands for SRS transmissions by one or more UEs).
  • DCI format 1_1 includes an MCS / NDI (New Data Indicator) / RV (Redundancy Version) field for transport block (TB) 1, and the upper layer parameter maxNrofCodeWordsScheduledByDCI in the upper layer parameter PDSCH-Config has n2 (ie , 2), the MCS / NDI / RV field for transport block 2 may be further included.
  • MCS / NDI New Data Indicator
  • RV Redundancy Version
  • n2 that is, 2
  • whether to enable / disable the transport block may be determined by a combination of MCS field and RV field. More specifically, when the MCS field for a specific transport block has a value of 26 and the RV field has a value of 1, the specific transport block may be disabled.
  • DCI format can be supported by 3GPP TS 38.212 document. That is, obvious steps or parts that are not described among DCI format-related features may be described with reference to the document. Also, all terms disclosed in this document may be described by the standard document.
  • One CORESET include N symb CORESET symbols (corresponding value having a value of 1, 2, 3) in the time domain and includes a CORESET N RB of RB in the frequency domain.
  • One control channel element includes 6 resource element groups (REGs), and one REG is the same as one RB on one OFDM symbol.
  • REGs in the CORESET are numbered in order according to the time-first manner. Specifically, the numbering starts from '0' for the first OFDM symbol in CORESET and the lowest-numbered RB.
  • a plurality of CORESETs may be set for one terminal.
  • Each CORESET is related only to one CCE-to-REG mapping.
  • CCE-to-REG mapping for one CORESET may be interleaved or non-interleaved.
  • the setting information for CORESET can be set by the upper layer parameter ControlResourceSet IE.
  • setting information for CORESET 0 (eg, common CORESET) can be set by the upper layer parameter ControlResourceSetZero IE.
  • a list of maximum M TCI (Transmission Configuration Indicator) state settings for one terminal may be set.
  • the maximum M TCI state setting may be set by the upper layer parameter PDSCH-Config so that (the UE) can decode the PDSCH according to detection of the PDCCH including the DCI intended for the UE and a given serving cell. have.
  • the M value may be determined depending on the capability of the terminal.
  • Each TCI-state includes a parameter for setting a QCL (quasi co-location) relationship between one or two downlink reference signals and DMRS ports of the PDSCH.
  • the QCL relationship is established based on the upper layer parameter qcl-Type1 for the first DL RS (downlink reference signal) and the upper layer parameter qcl-Type2 for the second DL RS (if set).
  • the QCL types should not be the same (shall not be the same).
  • the QCL types correspond to each DL RS given by the upper layer parameter qcl-Type in the upper layer parameter QCL-Info , and the QCL types can have one of the following values.
  • the terminal receives an activation command (activation command) used to map the maximum of 8 TCI states with a codepoint of a Transmission Configuration Indication (TCI) field in DCI.
  • activation command used to map the maximum of 8 TCI states with a codepoint of a Transmission Configuration Indication (TCI) field in DCI.
  • TCI Transmission Configuration Indication
  • the mapping between code points of the TCI fields in the TCIs states and the DCI is slot # (n + 3 * N subframe, ⁇ slot + It can be applied from 1).
  • N subframe, ⁇ slot is determined based on Table 1 or Table 2 described above.
  • the terminal After the terminal receives the initial higher layer configuration of the TCI states (initial higher layer configuration) and before the terminal receives the activation command, the terminal has the DMRS port (s) of the PDSCH of the serving cell is' QCL-TypeA From the viewpoint, it is assumed that it is QCL with the SS / PBCH (Synchronization Signal / Physical Broadcast Channel) block determined in the initial access procedure. Additionally, at the time, the UE may assume that the DMRS port (s) of the PDSCH of the serving cell is QCL with the SS / PBCH block determined in the initial access procedure from the perspective of 'QCL-TypeD'.
  • SS / PBCH Synchrom Radio Service
  • the UE assumes that the TCI field exists in the PDCCH of DCI format 1_1 transmitted on the CORESET.
  • the upper layer parameter tci-PresentInDCI is not set or the PDSCH is scheduled by DCI format 1_0, and the time offset between the reception time of the DL DCI and the reception time of the corresponding PDSCH is a threshold Threshold-Sched -Offset (the threshold is determined based on the reported UE capability ) or greater than or equal to, in order to determine the PDSCH antenna port QCL, the UE is a TCI state for the PDSCH or QCL assumption CORESET used for PDCCH transmission It is assumed that it is the same as the TCI state or QCL assumption applied to.
  • the UE uses the TCI-State based on the TCI field included in the DCI in the detected PDCCH to determine the PDSCH antenna port QCL. If the time offset between the reception time of the DL DCI and the reception time of the corresponding PDSCH is greater than or equal to a threshold Threshold-Sched-Offset (the threshold is determined based on the reported UE capability), the UE performs the PDSCH of the serving cell.
  • Threshold-Sched-Offset the threshold is determined based on the reported UE capability
  • the DMRS port (s) are QCL with RS (s) in the TCI state for the QCL type parameter (s) given by the indicated TCI stated.
  • the indicated TCI state should be based on the activated TCI states in the slot of the scheduled PDSCH.
  • CORESET associated with a search space set for cross-carrier scheduling is set to the terminal, the terminal assumes that the upper layer parameter tci-PresentInDCI is set to 'enabled' for the CORESET.
  • the terminal is a time offset between the reception time of the detected PDCCH in the discovery region set and the reception time of the corresponding PDSCH. Is expected to be greater than or equal to Threshold-Sched-Offset .
  • the QCL parameter (s) is for PDCCH QCL indication of CORESET associated with the search area monitored with the lowest CORESET-ID in the last slot in one or more CORESETs in the activation BWP of the serving cell monitored by the terminal.
  • the UE may assume that the DM-RS ports of PDSCH of a serving cell are quasi co-located with the RS (s) in the TCI state with respect to the QCL parameter (s) used for PDCCH quasi co-location indication of the CORESET associated with a monitored search space with the lowest CORESET-ID in the latest slot in which one or more CORESETs within the active BWP of the serving cell are monitored by the UE.)
  • the UE when the 'QCL-TypeD' of the PDSCH DMRS is different from the 'QCL-TypeD' of the PDCCH DMRS overlapping on at least one symbol, the UE expects to prioritize the reception of the PDCCH associated with the corresponding CORESET.
  • This operation can also be applied in the case of an intra band CA (if PDSCH and CORESET are in different CCs). If there is no TCI state including 'QCL-TypeD' among the set TCI states, the UE, regardless of the time offset between the reception time of the DL DCI and the reception time of the corresponding PDSCH, indicates the TCI indicated for the scheduled PDSCH. Obtain different QCL assumptions from state.
  • the UE For periodic CSI-RS resources in the upper layer parameter NZP-CSI-RS-ResourceSet where the upper layer parameter trs-Info is set, the UE should assume that the TCI state indicates one of the following QCL type (s):
  • the terminal For the CSI-RS resource in the upper layer parameter NZP-CSI-RS-ResourceSet set without upper layer parameter trs-Info and upper layer parameter repetition , the terminal should assume that the TCI state indicates one of the following QCL type (s). :
  • the upper layer parameter repetition is set 'QCL-TypeD' for the periodic CSI-RS resource in the layer parameter NZP-CSI-RS-ResourceSet , or
  • the terminal For the CSI-RS resource in the upper layer parameter NZP-CSI-RS-ResourceSet where the upper layer parameter repetition is set, the terminal should assume that the TCI state indicates one of the following QCL type (s):
  • the upper layer parameter repetition is set 'QCL-TypeD' for the CSI-RS resource in the layer parameter NZP-CSI-RS-ResourceSet , or
  • the UE For DMRS of the PDCCH, the UE should assume that the TCI state indicates one of the following QCL type (s):
  • the upper layer parameter repetition is set 'QCL-TypeD' for the CSI-RS resource in the layer parameter NZP-CSI-RS-ResourceSet , or
  • the UE For DMRS of PDSCH, the UE should assume that the TCI state indicates one of the following QCL type (s):
  • the upper layer parameter repetition is set 'QCL-TypeD' for the CSI-RS resource in the layer parameter NZP-CSI-RS-ResourceSet , or
  • QCL signaling may include all signaling configurations listed in the table below.
  • the UE can perform the following two possible settings of the upper layer parameter TCI-State . You can only expect settings.
  • * may mean that, when QCL type-D is applicable, DL RS 2 and QCL type-2 may be set for the terminal.
  • the UE performs upper layer parameter TCI-State. Only the three possible settings below can be expected.
  • * may mean that QCL type-D is not applicable.
  • ** may mean that, when QCL type-D is applicable, DL RS 2 and QCL type-2 may be set for the terminal.
  • the UE may set the following three possible settings of the upper layer parameter TCI-State . You can only expect.
  • the UE For DMRS of the PDCCH, the UE only has the following three possible settings of the upper layer parameter TCI-State while the fourth setting (the fourth row of the two tables below) is valid as the default setting before TRS is set. I can expect.
  • * may mean a setting that can be applied before TRS is set. Accordingly, the setting is not a TCI state, but rather can be interpreted as a valid QCL assumption.
  • ** may mean that QCL parameters are not directly derived from CSI-RS (or CSI).
  • the UE For DMRS of the PDCCH, the UE only has the following three possible settings of the upper layer parameter TCI-State while the fourth setting (the fourth row of the two tables below) is valid before the TRS is set (by default). I can expect.
  • * may mean a setting that can be applied before TRS is set. Accordingly, the setting is not a TCI state, but rather can be interpreted as a valid QCL assumption.
  • ** may mean that QCL parameters are not directly derived from CSI-RS (or CSI).
  • the UE For DMRS of the PDCCH, the UE only has the following three possible settings of the upper layer parameter TCI-State while the fourth setting (the fourth row of the two tables below) is valid before the TRS is set (by default). I can expect.
  • * may mean a setting that can be applied before TRS is set. Accordingly, the setting may be interpreted as a valid QCL assumption rather than a TCI state.
  • ** may mean that QCL parameters are not directly derived from CSI-RS (or CSI).
  • CSI-RS channel state information reference signal
  • each transmit antenna may have a separate reference signal.
  • a reference signal for feedback of channel state information (CSI) may be defined as CSI-RS.
  • CSI-RS includes ZP (Zero Power) CSI-RS and NZP (Non-Zero-Power) CSI-RS.
  • ZP CSI-RS and NZP CSI-RS may be defined as follows.
  • -NZP CSI-RS may be set by the CSI-RS-Resource-Mobility field in the NZP-CSI-RS-Resource IE (Information Element) or CSI-RS-ResourceConfigMobility IE.
  • the NZP CSI-RS may be defined based on a sequence generation and resource mapping method defined in the 3GPP TS 38.211 standard spec.
  • -ZP CSI-RS can be set by ZP-CSI-RS-Resource IE.
  • the UE may assume that the resource set for ZP CSI-RS is not used for PDSCH transmission.
  • the UE can perform the same measurement / reception on the channel / signal regardless of whether the channel / signal except the PDSCH collides with the ZP CSI-RS (The UE performs the same measurement / reception on channels / signals except PDSCH regardless of whether they collide with ZP CSI-RS or not).
  • the base station may set CSI-IM support to the UE.
  • the measurement result on the corresponding CSI-IM resource can be regarded as interference in CSI calculation.
  • the UE may set one or more CSI-IM resource set setting (s) indicated by the upper layer parameter CSI-IM-ResourceSet .
  • each CSI-IM resource set may be composed of K (K ⁇ 1) CSI-IM resource (s).
  • CSI-IM-ResourceSet For each CSI-IM resource configuration, the following parameters may be set through the upper layer parameter CSI-IM-ResourceSet :
  • This parameter determines the CSI-IM resource configuration ID
  • This parameter determines the subcarrier occupancy of the CSI-IM resource in the slot where csi-IM-ResourceElementPattern is set to 'pattern0' or 'pattern1', respectively.
  • This parameter determines the position of the OFDM symbol of the CSI-IM resource in the slot where csi-IM-ResourceElementPattern is set to 'pattern0' or 'pattern1', respectively.
  • This parameter determines the CSI-IM period and slot offset for periodic / semi-persistent CSI-IM.
  • This parameter includes parameters that enable the frequency occupancy setting of CSI-IM.
  • the following DL L1 / L2 beam management procedures may be supported within one or more TRPs (Transmission and Reception Points):
  • P1 is used to activate terminal measurements on different TRP Tx beams, to support selection of TRP Tx beams and / or terminal Rx beam (s)
  • P1 may include intra / inter TRP Tx beam sweeping from a set of different beams.
  • P1 may include Rx beam sweeping of the terminal from different sets of beams.
  • P2 is used to enable measurement of UEs on different TRP Tx beams, so that inter / intra TRP Tx beams can be changed
  • P2 can be interpreted as a special case of P1.
  • the set of beams for beam refinement can be set smaller than P1.
  • P3 is used to activate the measurement of the terminal on the same TRP Tx beam, so that the terminal can change the terminal Rx beam when using beamforming
  • the same procedure design can be applied for intra-TRP beam management and inter-TRP beam management. Accordingly, the terminal may be designed such that it does not know whether the corresponding beam is an intra-TRP beam or an inter-TRP beam.
  • the P2 and P3 procedures can be performed jointly and / or multiple times. Through this, the TRP Tx beam and the terminal Rx beam may be simultaneously changed.
  • the P3 procedure can be performed without modification to the physical layer procedure defined in the existing standard spec.
  • the P3 procedure may be performed through some modifications to the physical layer procedure defined in the existing standard spec.
  • the above-described method may support management of a plurality of Tx / Rx beam pairs for the terminal.
  • assistance information may be provided from other carriers.
  • the methods described above can be used on single / multiple beam (s) per TRP.
  • CSI-RS may support DL Tx beam sweeping and UE Rx beam sweeping.
  • CSI-RS may be used for the above-described P1, P2, P3.
  • CSI-RS can support the following mapping structures:
  • the Np value can be set in various ways. For example, it may be set to a fixed value according to a standard spec, or may be set to one of a plurality of values through configuration of a base station (eg, RRC signaling, DCI, etc.).
  • a base station eg, RRC signaling, DCI, etc.
  • time unit may mean an N OFDM symbol period on a set (or reference) neuromerology.
  • N may be set to a value greater than or equal to 1, and the N value may be set to a fixed value according to a standard spec, or may be set to one of a plurality of values through configuration of a base station (eg, RRC signaling, DCI, etc.).
  • a base station eg, RRC signaling, DCI, etc.
  • OFDM symbols constituting one time unit may be set continuously or discontinuously.
  • Each time unit may be divided into a plurality of sub-time units.
  • TDM Time Division Multiplexing
  • IFDM Interleaved Frequency Division Multiplexing
  • the OFDM symbol level may be divided into OFDM symbol lengths equal to or shorter than the reference OFDM symbol length (eg, greater subcarrier spacing).
  • mapping structure can be used to support multiple panels or multiple Tx panels.
  • mapping method of CSI-RS for Tx beam and Rx beam sweeping Various options can be considered as a mapping method of CSI-RS for Tx beam and Rx beam sweeping:
  • the Tx beam (s) are set equally over the sub-time units
  • the Tx beam (s) are set differently over the sub-time units
  • the combination of different time units can be determined based on the number and period.
  • the Tx beam (s) may be set equally or differently across sub-time units within each time unit.
  • one OFDM symbol period may be divided into a plurality of sub-time units for P3 operation. Accordingly, UE Rx beam sweeping for the same TRP Tx beam may be allowed.
  • PDMA operation based on IFDMA or (relatively) large subcarrier spacing can also be considered.
  • P3 operation based on IFDMA the following may be considered.
  • UE can clearly distinguish NZP CSI-RS REs and ZP (Null) REs within the same OFDM symbol
  • NZP and one resource set to a specific comb value / offset and (ii) ZP and other resources set to an independent comb value / offset (to properly indicate null REs).
  • Multiple CSI-RS resources can be configured.
  • Null RE setting and independent comb value / offset setting whether CSI-RS resource multiplexing is appropriately supported for multiple terminals on the frequency domain may be additionally examined.
  • an appropriate null RE setting may be considered.
  • P3 operation may be supported by (i) setting a single CSI-RS resource composed of a plurality of OFDM symbols, or (ii) repeating the same CSI-RS resource over a plurality of OFDM symbols.
  • a simpler terminal implementation can be supported by maintaining the beam sweeping interval at an integer multiple of the symbol length.
  • the following upper layer parameter NZP-CSI-RS-ResourceSet may be set to the UE for the repetitive operation for the P3 operation.
  • the upper layer parameter may be defined as follows based on 3GPP TS 38.331.
  • the repetition parameter in the NZP-CSI-RS-ResourceSet IE may be defined as follows.
  • the following parameters may be set to the terminal.
  • the upper layer parameter may be defined as follows based on 3GPP TS 38.331.
  • resourceForChannelMeasurement csi-IM-ResourceForInterference and nzp-CSI-RS-ResourceForInterference in the CSI-ReportConfig IE may have the following relationship.
  • CSI calculation may be performed as follows.
  • reporting for reportQuantity ⁇ cri-RSRP or ssb-Index-RSRP ⁇ can be classified as follows.
  • the UE may be configured as follows. At this time, the terminal may perform the following reporting according to nrofReportedRS or groupBasedBeamReporting .
  • L1-RSRQ and L1-SINR may be defined as follows.
  • L1-RSRQ may be set to satisfy the following equation.
  • RSSI may include a linear average value of total power received from all sources (eg, co-channel serving and non-serving cells, adjacent channel interference, thermal noise, etc.).
  • the RSSI includes both interference and noise as well as the power of the desired signal.
  • the RSSI value can be very close to 1.
  • the RSSI cannot be self-contained feedback information for TRP beam selection.
  • RSRP needs to always carry RSRQ in addition to CRI / SSBRI.
  • L1-SINR may be set to satisfy the following equation.
  • SINR in the high SINR region can play an RSRP role in terms of beam reporting.
  • SINR may reflect interference conditions for each beam. This is because the denominator that determines SINR does not include co-channel power from serving cells. Accordingly, SINR can be self-sufficient feedback information, and accordingly SINR can be interpreted as more appropriate feedback information than RSRQ.
  • FIG. 6 illustrates a communication system 1 applied to the present disclosure.
  • the communication system 1 applied to the present disclosure includes a wireless device, a base station and a network.
  • the wireless device means a device that performs communication using a wireless access technology (eg, 5G NR (New RAT), Long Term Evolution (LTE)), and may be referred to as a communication / wireless / 5G device.
  • a wireless access technology eg, 5G NR (New RAT), Long Term Evolution (LTE)
  • LTE Long Term Evolution
  • the wireless device includes a robot 100a, a vehicle 100b-1, 100b-2, an XR (eXtended Reality) device 100c, a hand-held device 100d, and a home appliance 100e. ), Internet of Thing (IoT) devices 100f, and AI devices / servers 400.
  • IoT Internet of Thing
  • the vehicle may include a vehicle equipped with a wireless communication function, an autonomous driving vehicle, a vehicle capable of performing inter-vehicle communication, and the like.
  • the vehicle may include a UAV (Unmanned Aerial Vehicle) (eg, a drone).
  • XR devices include Augmented Reality (AR) / Virtual Reality (VR) / Mixed Reality (MR) devices, Head-Mounted Device (HMD), Head-Up Display (HUD) provided in vehicles, televisions, smartphones, It may be implemented in the form of a computer, wearable device, home appliance, digital signage, vehicle, robot, or the like.
  • the mobile device may include a smart phone, a smart pad, a wearable device (eg, a smart watch, smart glasses), a computer (eg, a notebook, etc.).
  • Household appliances may include a TV, a refrigerator, and a washing machine.
  • IoT devices may include sensors, smart meters, and the like.
  • the base station and the network may also be implemented as wireless devices, and the specific wireless device 200a may operate as a base station / network node to other wireless devices.
  • the wireless devices 100a to 100f may be connected to the network 300 through the base station 200.
  • AI Artificial Intelligence
  • the network 300 may be configured using a 3G network, a 4G (eg, LTE) network, or a 5G (eg, NR) network.
  • the wireless devices 100a to 100f may communicate with each other through the base station 200 / network 300, but may directly communicate (e.g. sidelink communication) without going through the base station / network.
  • the vehicles 100b-1 and 100b-2 may communicate directly (e.g. Vehicle to Vehicle (V2V) / Vehicle to everything (V2X) communication).
  • the IoT device eg, sensor
  • the IoT device may directly communicate with other IoT devices (eg, sensor) or other wireless devices 100a to 100f.
  • Wireless communication / connections 150a, 150b, and 150c may be achieved between the wireless devices 100a to 100f / base station 200 and the base station 200 / base station 200.
  • the wireless communication / connection is various wireless access such as uplink / downlink communication 150a and sidelink communication 150b (or D2D communication), base station communication 150c (eg relay, IAB (Integrated Access Backhaul)). It can be achieved through technology (eg, 5G NR).
  • wireless communication / connections 150a, 150b, 150c wireless devices and base stations / wireless devices, base stations and base stations can transmit / receive radio signals to each other.
  • wireless communication / connections 150a, 150b, 150c may transmit / receive signals over various physical channels.
  • various signal processing processes eg, channel encoding / decoding, modulation / demodulation, resource mapping / demapping, etc.
  • resource allocation processes e.g., resource allocation processes, and the like.
  • FIG. 7 illustrates a wireless device that can be applied to the present disclosure.
  • the first wireless device 100 and the second wireless device 200 may transmit and receive wireless signals through various wireless access technologies (eg, LTE, NR).
  • ⁇ the first wireless device 100, the second wireless device 200 ⁇ is ⁇ wireless device 100x, base station 200 ⁇ and / or ⁇ wireless device 100x), wireless device 100x in FIG. 6 ⁇ .
  • the first wireless device 100 includes one or more processors 102 and one or more memories 104, and may further include one or more transceivers 106 and / or one or more antennas 108.
  • the processor 102 controls the memory 104 and / or transceiver 106 and may be configured to implement the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed herein.
  • the processor 102 may process information in the memory 104 to generate the first information / signal, and then transmit the wireless signal including the first information / signal through the transceiver 106.
  • the processor 102 may receive the wireless signal including the second information / signal through the transceiver 106 and store the information obtained from the signal processing of the second information / signal in the memory 104.
  • the memory 104 may be connected to the processor 102 and may store various information related to the operation of the processor 102.
  • the memory 104 is an instruction to perform some or all of the processes controlled by the processor 102, or to perform the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed herein. You can store software code that includes
  • the processor 102 and the memory 104 may be part of a communication modem / circuit / chip designed to implement wireless communication technology (eg, LTE, NR).
  • the transceiver 106 can be coupled to the processor 102 and can transmit and / or receive wireless signals through one or more antennas 108.
  • the transceiver 106 may include a transmitter and / or receiver.
  • the transceiver 106 may be mixed with a radio frequency (RF) unit.
  • the wireless device may mean a communication modem / circuit / chip.
  • the second wireless device 200 includes one or more processors 202, one or more memories 204, and may further include one or more transceivers 206 and / or one or more antennas 208.
  • the processor 202 controls the memory 204 and / or transceiver 206 and may be configured to implement the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed herein.
  • the processor 202 may process information in the memory 204 to generate third information / signal, and then transmit a wireless signal including the third information / signal through the transceiver 206.
  • the processor 202 may receive the wireless signal including the fourth information / signal through the transceiver 206 and store the information obtained from the signal processing of the fourth information / signal in the memory 204.
  • the memory 204 may be connected to the processor 202, and may store various information related to the operation of the processor 202.
  • the memory 204 is an instruction to perform some or all of the processes controlled by the processor 202, or to perform the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed herein. You can store software code that includes
  • the processor 202 and the memory 204 may be part of a communication modem / circuit / chip designed to implement wireless communication technology (eg, LTE, NR).
  • the transceiver 206 can be coupled to the processor 202 and can transmit and / or receive wireless signals through one or more antennas 208.
  • Transceiver 206 may include a transmitter and / or receiver.
  • Transceiver 206 may be mixed with an RF unit.
  • the wireless device may mean a communication modem / circuit / chip.
  • one or more protocol layers may be implemented by one or more processors 102 and 202.
  • one or more processors 102, 202 may implement one or more layers (eg, functional layers such as PHY, MAC, RLC, PDCP, RRC, SDAP).
  • the one or more processors 102 and 202 may include one or more Protocol Data Units (PDUs) and / or one or more Service Data Units (SDUs) according to the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed herein. Can be created.
  • PDUs Protocol Data Units
  • SDUs Service Data Units
  • the one or more processors 102, 202 may generate messages, control information, data or information according to the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed herein.
  • the one or more processors 102, 202 generate signals (eg, baseband signals) including PDUs, SDUs, messages, control information, data or information according to the functions, procedures, suggestions and / or methods disclosed herein. , To one or more transceivers 106, 206.
  • One or more processors 102, 202 may receive signals (eg, baseband signals) from one or more transceivers 106, 206, and descriptions, functions, procedures, suggestions, methods and / or operational flow diagrams disclosed herein Depending on the field, PDU, SDU, message, control information, data or information may be acquired.
  • signals eg, baseband signals
  • One or more processors 102, 202 may be referred to as a controller, microcontroller, microprocessor, or microcomputer.
  • the one or more processors 102, 202 can be implemented by hardware, firmware, software, or a combination thereof.
  • ASICs Application Specific Integrated Circuits
  • DSPs Digital Signal Processors
  • DSPDs Digital Signal Processing Devices
  • PLDs Programmable Logic Devices
  • FPGAs Field Programmable Gate Arrays
  • Descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed in this document may be implemented using firmware or software, and firmware or software may be implemented to include modules, procedures, functions, and the like.
  • the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed herein are either firmware or software set to perform or are stored in one or more processors 102, 202 or stored in one or more memories 104, 204. It can be driven by the above processors (102, 202).
  • the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed herein can be implemented using firmware or software in the form of code, instructions and / or instructions.
  • the one or more memories 104, 204 may be coupled to one or more processors 102, 202, and may store various types of data, signals, messages, information, programs, codes, instructions, and / or instructions.
  • the one or more memories 104, 204 may be comprised of ROM, RAM, EPROM, flash memory, hard drives, registers, cache memory, computer readable storage media, and / or combinations thereof.
  • the one or more memories 104, 204 may be located inside and / or outside of the one or more processors 102, 202. Also, the one or more memories 104 and 204 may be connected to the one or more processors 102 and 202 through various technologies such as a wired or wireless connection.
  • the one or more transceivers 106 and 206 may transmit user data, control information, radio signals / channels, and the like referred to in the methods and / or operational flowcharts of this document to one or more other devices.
  • the one or more transceivers 106, 206 may receive user data, control information, radio signals / channels, and the like referred to in the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed herein from one or more other devices. have.
  • one or more transceivers 106, 206 may be connected to one or more processors 102, 202, and may transmit and receive wireless signals.
  • one or more processors 102, 202 may control one or more transceivers 106, 206 to transmit user data, control information, or wireless signals to one or more other devices.
  • one or more processors 102, 202 may control one or more transceivers 106, 206 to receive user data, control information, or wireless signals from one or more other devices.
  • one or more transceivers 106, 206 may be coupled to one or more antennas 108, 208, and one or more transceivers 106, 206 may be described, functions described herein through one or more antennas 108, 208.
  • the one or more antennas may be a plurality of physical antennas or a plurality of logical antennas (eg, antenna ports).
  • the one or more transceivers 106 and 206 use the received radio signal / channel and the like in the RF band signal to process the received user data, control information, radio signal / channel, and the like using one or more processors 102 and 202. It can be converted to a baseband signal.
  • the one or more transceivers 106 and 206 may convert user data, control information, and radio signals / channels processed using one or more processors 102 and 202 from a baseband signal to an RF band signal.
  • the one or more transceivers 106, 206 may include (analog) oscillators and / or filters.
  • the wireless device may be implemented in various forms according to use-example / service (see FIG. 6).
  • the wireless devices 100 and 200 correspond to the wireless devices 100 and 200 of FIG. 7, and various elements, components, units / units, and / or modules ).
  • the wireless devices 100 and 200 may include a communication unit 110, a control unit 120, a memory unit 130, and additional elements 140.
  • the communication unit may include a communication circuit 112 and a transceiver (s) 114.
  • the communication circuit 112 can include one or more processors 102,202 and / or one or more memories 104,204 in FIG.
  • the transceiver (s) 114 may include one or more transceivers 106,206 and / or one or more antennas 108,208 of FIG. 7.
  • the control unit 120 is electrically connected to the communication unit 110, the memory unit 130, and the additional element 140, and controls various operations of the wireless device. For example, the controller 120 may control the electrical / mechanical operation of the wireless device based on the program / code / command / information stored in the memory unit 130. In addition, the control unit 120 transmits information stored in the memory unit 130 to the outside (eg, another communication device) through the wireless / wired interface through the communication unit 110 or externally (eg, through the communication unit 110). Information received through a wireless / wired interface from another communication device) may be stored in the memory unit 130.
  • the outside eg, another communication device
  • Information received through a wireless / wired interface from another communication device may be stored in the memory unit 130.
  • the additional element 140 may be variously configured according to the type of wireless device.
  • the additional element 140 may include at least one of a power unit / battery, an input / output unit (I / O unit), a driving unit, and a computing unit.
  • wireless devices include robots (FIGS. 6, 100A), vehicles (FIGS. 6, 100B-1, 100B-2), XR devices (FIGS. 6, 100C), portable devices (FIGS. 6, 100D), and household appliances. (Fig. 6, 100e), IoT device (Fig.
  • digital broadcasting terminal digital broadcasting terminal
  • hologram device public safety device
  • MTC device medical device
  • fintech device or financial device
  • security device climate / environment device
  • It may be implemented in the form of an AI server / device (Figs. 6, 400), a base station (Figs. 6, 200), a network node, or the like.
  • the wireless device may be movable or used in a fixed place depending on the use-example / service.
  • various elements, components, units / parts, and / or modules in the wireless devices 100 and 200 may be entirely interconnected through a wired interface, or at least some may be wirelessly connected through the communication unit 110.
  • the control unit 120 and the communication unit 110 are connected by wire, and the control unit 120 and the first unit (eg, 130 and 140) are connected through the communication unit 110. It can be connected wirelessly.
  • each element, component, unit / unit, and / or module in the wireless devices 100 and 200 may further include one or more elements.
  • the controller 120 may be composed of one or more processor sets.
  • control unit 120 may include a set of communication control processor, application processor, electronic control unit (ECU), graphic processing processor, and memory control processor.
  • memory unit 130 includes random access memory (RAM), dynamic RAM (DRAM), read only memory (ROM), flash memory, volatile memory, and non-volatile memory (non- volatile memory) and / or combinations thereof.
  • the portable device may include a smart phone, a smart pad, a wearable device (eg, a smart watch, smart glasses), and a portable computer (eg, a notebook, etc.).
  • the mobile device may be referred to as a mobile station (MS), a user terminal (UT), a mobile subscriber station (MSS), a subscriber station (SS), an advanced mobile station (AMS), or a wireless terminal (WT).
  • MS mobile station
  • UT user terminal
  • MSS mobile subscriber station
  • SS subscriber station
  • AMS advanced mobile station
  • WT wireless terminal
  • the mobile device 100 includes an antenna unit 108, a communication unit 110, a control unit 120, a memory unit 130, a power supply unit 140a, an interface unit 140b, and an input / output unit 140c. ).
  • the antenna unit 108 may be configured as part of the communication unit 110.
  • Blocks 110 to 130 / 140a to 140c correspond to blocks 110 to 130/140 in FIG. 8, respectively.
  • the communication unit 110 may transmit and receive signals (eg, data, control signals, etc.) with other wireless devices and base stations.
  • the controller 120 may perform various operations by controlling the components of the mobile device 100.
  • the controller 120 may include an application processor (AP).
  • the memory unit 130 may store data / parameters / programs / codes / commands necessary for driving the portable device 100. Also, the memory unit 130 may store input / output data / information.
  • the power supply unit 140a supplies power to the portable device 100 and may include a wired / wireless charging circuit, a battery, and the like.
  • the interface unit 140b may support the connection between the mobile device 100 and other external devices.
  • the interface unit 140b may include various ports (eg, audio input / output ports, video input / output ports) for connection with external devices.
  • the input / output unit 140c may receive or output image information / signal, audio information / signal, data, and / or information input from a user.
  • the input / output unit 140c may include a camera, a microphone, a user input unit, a display unit 140d, a speaker, and / or a haptic module.
  • the input / output unit 140c acquires information / signal (eg, touch, text, voice, image, video) input from the user, and the obtained information / signal is transmitted to the memory unit 130 Can be saved.
  • the communication unit 110 may convert information / signals stored in the memory into wireless signals, and transmit the converted wireless signals directly to other wireless devices or to a base station.
  • the communication unit 110 may restore the received radio signal to original information / signal.
  • the restored information / signal is stored in the memory unit 130, it can be output in various forms (eg, text, voice, image, video, heptic) through the input / output unit 140c.
  • Vehicles or autonomous vehicles can be implemented as mobile robots, vehicles, trains, aerial vehicles (AVs), ships, and the like.
  • a vehicle or an autonomous vehicle 100 includes an antenna unit 108, a communication unit 110, a control unit 120, a driving unit 140a, a power supply unit 140b, a sensor unit 140c, and autonomous driving It may include a portion (140d).
  • the antenna unit 108 may be configured as part of the communication unit 110.
  • Blocks 110/130 / 140a to 140d correspond to blocks 110/130/140 in FIG. 9, respectively.
  • the communication unit 110 may transmit and receive signals (eg, data, control signals, etc.) with external devices such as other vehicles, base stations (e.g. base stations, road side units, etc.) and servers.
  • the controller 120 may perform various operations by controlling elements of the vehicle or the autonomous vehicle 100.
  • the controller 120 may include an electronic control unit (ECU).
  • the driving unit 140a may cause the vehicle or the autonomous vehicle 100 to travel on the ground.
  • the driving unit 140a may include an engine, a motor, a power train, wheels, brakes, and steering devices.
  • the power supply unit 140b supplies power to the vehicle or the autonomous vehicle 100 and may include a wired / wireless charging circuit, a battery, and the like.
  • the sensor unit 140c may obtain vehicle status, surrounding environment information, user information, and the like.
  • the sensor unit 140c includes an inertial measurement unit (IMU) sensor, a collision sensor, a wheel sensor, a speed sensor, a tilt sensor, a weight sensor, a heading sensor, a position module, and a vehicle forward / Reverse sensor, battery sensor, fuel sensor, tire sensor, steering sensor, temperature sensor, humidity sensor, ultrasonic sensor, illumination sensor, pedal position sensor, and the like.
  • the autonomous driving unit 140d maintains a driving lane, automatically adjusts speed, such as adaptive cruise control, and automatically moves along a predetermined route, and automatically sets a route when a destination is set. Technology, etc. can be implemented.
  • the communication unit 110 may receive map data, traffic information data, and the like from an external server.
  • the autonomous driving unit 140d may generate an autonomous driving route and a driving plan based on the acquired data.
  • the control unit 120 may control the driving unit 140a so that the vehicle or the autonomous vehicle 100 moves along the autonomous driving path according to a driving plan (eg, speed / direction adjustment).
  • a driving plan eg, speed / direction adjustment.
  • the communication unit 110 may acquire the latest traffic information data non-periodically from an external server, and may acquire surrounding traffic information data from nearby vehicles.
  • the sensor unit 140c may acquire vehicle status and surrounding environment information.
  • the autonomous driving unit 140d may update the autonomous driving route and driving plan based on newly acquired data / information.
  • the communication unit 110 may transmit information regarding a vehicle location, an autonomous driving route, and a driving plan to an external server.
  • the external server may predict traffic information data in advance using AI technology or the like based on the information collected from the vehicle or autonomous vehicles, and provide the predicted traffic information data to the vehicle or autonomous vehicles.
  • 'NZP CSI-RS resource' may be replaced with 'NZP CSI-RS'.
  • a resource set / allocated for a channel measurement purpose to a terminal is referred to as a channel measurement resource (CMR), and a resource set / allocated for a interference measurement purpose to a terminal is referred to as an interference measurement resource (IMR).
  • IMR may be replaced with the term 'CSI-IM'.
  • the IMR may include a ZP (Zero Power) IMR in which a specific RS (reference signal) is not transmitted and a NZP (Non-Zero Power) IMR in which a specific RS is transmitted.
  • the term 'ZP IMR' may be extended / replaced to 'ZP CSI-RS'.
  • the role of the ZP CSI-RS may be RS configured / designated for PDSCH rate matching purposes as well as interference measurement purposes (or not interference measurement purposes).
  • measuring interference based on 'ZP CSI-RS' may have the same meaning as measuring interference using 'ZP IMR'.
  • IMR a resource for measuring interference by the terminal
  • ZP CSI-RS is defined (eg, overlap) on the RE where CSI-IM is defined (or, at all RE positions where CSI-IM is defined).
  • ZP CSI-RS is defined (eg overlap)
  • the base station needs to set the ZP CSI-RS in the CSI-IM RE location so that the UE can perform rate matching on the corresponding RE. Accordingly, the operation examples disclosed in this section can be effectively applied under the condition that ZP CSI-RS is set in the CSI-IM RE position.
  • the UE may not need the ZP CSI-RS.
  • the examples disclosed in this section can be applied.
  • the examples described in this section may be effectively applied only under the condition that the ZP CSI-RS is set.
  • RSRP reporting may be allowed to the UE for beam management.
  • RSRP is simply an index indicating the received signal power, and may be an index in which interference intensity is not considered. Accordingly, when only the base station Tx beam and / or the UE Rx beam are selected in consideration of only RSRP, the base station Tx beam and / or UE Rx beam having strong interference may be selected even if RSRP is large.
  • this section describes examples of SINR reporting methods considering interference for beam management. More specifically, in this section, based on the previously defined CSI-ReportConfig and IMR (eg, ZP CSI-RS, CSI-IM, etc.), a detailed description of a method for measuring interference signal power required by a UE for SINR calculation do.
  • CSI-ReportConfig eg, ZP CSI-RS, CSI-IM, etc.
  • the base station repeats the reference signal N times in the time axis within one OFDM symbol period (for example, a reference signal in which the same signal waveform repeats N times in one OFDM symbol period) Etc.).
  • the receiving node may perform up to N times Rx beam sweeping based on (or assuming) that the same signal (or the same signal waveform) is repeated N times within the predetermined time period.
  • 11 to 13 are reference diagrams for describing an operation example of a terminal applicable in the present disclosure.
  • an operation example of a terminal and a base station applicable to the present disclosure will be described in detail with reference to the drawings.
  • a single port CMR for example, NZP CSI-RS resource
  • (N-1, 1) IMR having a RE pattern for example, ZP CSI-RS, CSI-IM, etc.
  • the (A, B) RE pattern may mean a RE pattern determined based on A consecutive subcarriers in the frequency domain and B consecutive symbols in the time domain.
  • CMR eg, NZP CSI-RS
  • CMR associated with a single antenna port (e.g., NZP CSI-RS resource) # 0 and (3,1) IMR with RE pattern (e.g., ZP CSI-RS, CSI-IM Etc.) # 0 may be FDM (Frequency Domain Multiplexing) in an interleaved manner on the same OFDM symbol.
  • the CMR e.g, NZP CSI-RS resource
  • the terminal may assume that the received reference signal (eg, CSI-RS) is configured to be repeated N times on the time domain on one OFDM symbol.
  • the terminal may assume that the received reference signal (or the waveform of the received reference signal) is configured to be repeated N times on the same OFDM symbol.
  • the 'next conditions' considered for the operation in the time domain may include the following conditions.
  • IMR eg ZP CSI-RS, CSI-IM, etc.
  • RE pattern is (1, 1) or (3, 1) or (7, 1)
  • CMR set for channel measurement e.g. resourceForChannelMeasurement
  • IMR for interference measurement e.g. csi-IM-ResourceForInterference or ZP-CSI-RS-ResourceSet
  • the resource-wise (resource-wise) specific CMR in the NZP CSI-RS resource set e.g. NZP CSI-RS resource
  • IMR IMR
  • the IMR corresponding to the specific CMR in the set eg, ZP CSI-RS, CSI-IM, etc.
  • the IMR corresponding to the specific CMR in the set is FDM on the same OFDM symbol in the frequency domain (in an interleaved manner)
  • the UE can perform UE Rx beam sweeping up to N times within one OFDM symbol period using the reference signal, and thereby find the optimal UE Rx beam (eg, P3 operation).
  • resourceForChannelMeasurement ⁇ NZP CSI-RS resource # 0, NZP CSI-RS resource # 1 ⁇
  • csi-IM-ReousrceForInterference ⁇ ZP CSI-RS resource # 0, ZP CSI-RS resource # 1 ⁇
  • the number of antenna ports for CMR eg, NZP CSI-RS resource
  • the RE pattern for IMR eg, ZP CSI-RS, CSI-IM, etc.
  • resources corresponding to resource-wise are the same. It can be configured to FDM in an interleaved manner on a frequency axis on an OFDM symbol. That is, according to FIG. 11, all of the above-described Condition # 1, # 2, # 3 may be satisfied.
  • the terminal has the same signal (or the same signal waveform) in the time axis on the received OFDM signal (eg, CSI-RS) on one OFDM symbol. It can be assumed that it is transmitted to be repeated 4 times. Accordingly, the UE can find an optimal Rx beam using up to 4 Rx beams for each resource, and through this, a more accurate optimal base station Tx beam (eg, NZP CSI-RS resource) and UE Rx beam You can choose.
  • Tx beam eg, NZP CSI-RS resource
  • the UE assumes one Rx beam and measures RSRP for each resource, and inaccurately selects the optimal base station Tx beam than the method applicable to the present disclosure. Is done. That is, according to the present disclosure, an optimal base station Tx beam and a UE Rx beam that are more accurate than the method defined in the existing standard may be selected.
  • the terminal may select the optimal base station Tx beam using one Rx beam. have.
  • the UE loses the Rx beam sweeping opportunity (ie, loses the opportunity for optimal UE Rx beam selection), but can be advantageous in terms of received power by accumulating and receiving the 4 repetitive signals as one Rx beam. have. Consequently, this operation can be useful when the path-loss is large.
  • the UE may select the optimal base station Tx beam using two Rx beams.
  • the terminal can accumulate two repetitively transmitted signals with one Rx beam, and perform two Rx beam sweeps.
  • an IMR eg, ZP CSI-RS resource, CSI-IM, etc.
  • RE pattern is set to a (1, 1) RE pattern
  • two CMRs are interleaved on one OFDM symbol.
  • the UE may assume that the two CMRs are different base station Tx beams (eg, the UE assumes that Tx filters (or Tx coefficients) used for two CMRs are different or are not identical. Can be).
  • the UE can measure a total of 8 beam pairs (eg, 2 base station Tx beams and 4 UE Rx beams) on one OFDM symbol.
  • the RS overhead required for optimal base station Tx beam and UE Rx selection (eg, P1 operation) may be reduced by half compared to the case of FIG. 11. Additionally, latency for the corresponding operation may also be reduced.
  • the terminal may determine the number N of repetitions based on the set IMR RE pattern.
  • N may be determined / set to 2, 4, and 8, respectively.
  • the IMR RE pattern is set to (1, 1), (3, 1), CMR and IMR may be transmitted in resource block (RB) units.
  • the IMR RE pattern is set to (7, 1), CMR and IMR may be transmitted in two resource block (RB) units.
  • the IMR RE pattern is (1, 1) or (3, 1) or (7, 1) is considered.
  • a reference signal eg, CSI-RS
  • IFFT Inverse Fourier Transform
  • FFT Fast Fourier Transform
  • the IMR RE pattern can be set to (1, 1) or (3, 1) or (7, 1) for this purpose.
  • the reference signal may be transmitted to be repeated 3 or 5 times on the time axis on one OFDM symbol, respectively.
  • the signals are not completely identical for each repetitive transmission (assuming the existing IFFT and / or FFT size), the performance is reduced during P3 operation.
  • IMR RE pattern 2, 1) or ( 4, 1) Even if a RE pattern is used, each repetitively transmitted signal (or signal waveform) can be completely set.
  • condition # 1 considered in the second operation example according to this section is not limited to cases in which the RE pattern is (1, 1), (3, 1), (7, 1), and in some cases Additional RE patterns may be considered (e.g., when the factor values for IFFT and / or FFT size are set to 3 or 5, etc.).
  • whether a UE can find the optimal UE Rx beam from the CMR using N Rx beams may be defined by UE capability. have. If the terminal reports to the base station that the operation is not supported, the terminal may not expect that a sub time unit may be set smaller than 1 OFDM symbol length for P3 operation. In other words, when the terminal reports to the base station that the operation is not supported, the terminal can expect that the sub-time unit is set to 1 OFDM symbol length for P3 operation.
  • the UE can find the optimal Rx beam by using up to N Rx beams for each resource.
  • the terminal may not always perform the operation.
  • the base station may indicate to the UE through a separate parameter that a reference signal (eg, NZP CSI-RS resource) is transmitted to be repeated N times on one OFDM symbol in the time axis. have.
  • the parameter may be set to the terminal through upper layer parameters (eg, media access control-control element (MAC-CE), radio resource control (RRC), etc.). Accordingly, when the terminal receives the parameter from the base station, it can be assumed that the terminal is transmitted such that the received reference signal (eg, NZP CSI-RS resource) is repeated N times on one OFDM symbol in the time axis. .
  • MAC-CE media access control-control element
  • RRC radio resource control
  • resources included in two resource sets are frequency on the same OFDM symbol for each resource-wise. It should be checked whether FDM (Frequency Domain Multiplexing) is performed in an interleaved manner on a domain. The checking operation may increase the operation complexity of the terminal.
  • a method in which a base station sets a separate parameter indicating that the reference signal is transmitted to be repeated N times may be applied.
  • the separate parameters may be set in various ways. For example, it may be defined as a new IE not defined in the conventional 3GPP NR spec, or may be defined as a new upper layer parameter in the CSI-ReportConfig IE defined in the conventional 3GPP NR spec.
  • the base station may set the corresponding parameter to the UE through RRC and / or MAC-CE and / or DCI.
  • the terminal FDM is interleaved in the frequency direction on the same OFDM symbol for each resource-wise resource included in two resource sets (eg, CMR set and IMR set) set for the terminal for each resource-wise (Frequency Domain Multiplexing) can be expected.
  • the terminal may assume that the set CMR is repeatedly transmitted N times on one OFDM symbol.
  • parameters applicable to the third additional operation example may be defined as subTimeUnitlessthan1 in CSI-ReportConfig IE as follows.
  • the name of the parameter is only an example applicable to the present disclosure, and the parameter may have a different name depending on the embodiment.
  • reportQuantity can additionally include cri-SINR.
  • the The UE may assume that the reference signal (eg, NZP CSI-RS resource) transmitted from the base station is repeatedly transmitted once on the time axis on one OFDM symbol.
  • the reference signal eg, NZP CSI-RS resource
  • the UE can accurately measure the interference signal power in order to calculate the SINR.
  • an IMR eg, ZP CSI-RS, CSI-IM, etc.
  • the UE can more accurately measure the interference signal power.
  • the UE should assume that the reference signal (eg, CSI-RS) transmitted from the base station is repeatedly transmitted once (the same signal) on the time axis on one OFDM symbol. Accordingly, the terminal can measure the interference signal power from the RE set by IMR by applying FFT (or Discrete Fourier Transform (DFT)) to the received signal.
  • FFT or Discrete Fourier Transform
  • the UE performs RE mapping with ZP CSI-RS on the frequency domain. It cannot be found, and therefore an accurate SINR calculation cannot be performed.
  • the UE uses the CMR to receive and interfere with the signal of interest (desired). Signal reception power can be measured. And, the terminal can calculate the SINR using the two measured values.
  • the UE when CMR (eg, NZP CSI-RS resource) is set at 4 RE intervals in the frequency domain, the UE can acquire a sufficient sample in the frequency domain, and based on this, Accurate channel estimation can be performed.
  • the terminal may remove a signal of interest from the RE set in the CMR with higher accuracy after the channel estimation.
  • the terminal may measure the interference signal reception power using the remaining signal removed from the RE.
  • FIG. 14 is a diagram briefly showing an operation example of a terminal and a base station according to an example of the present disclosure
  • FIG. 15 is a flowchart briefly showing an operation example of a terminal according to an example of the present disclosure
  • FIG. 16 is an example of this disclosure It is a flow chart showing an example of the operation of a base station according to
  • a terminal may receive SINR reporting settings from a base station (S1410, S1510).
  • the base station may transmit the SINR report setting to the terminal (S1410, S1610).
  • the SINR report setting may be transmitted and received through higher layer signaling (eg, RRC signaling, etc.).
  • the SINR report setting may be transmitted and received through DCI.
  • the terminal may or may not receive the interference measurement resource setting from the base station (S1420, S1520). More specifically, when the terminal receives the interference measurement resource setting from the base station, the interference measurement resource may be set to the terminal. On the other hand, when the terminal does not receive the interference measurement resource setting from the base station, the interference measurement resource may not be set to the terminal. In response to this, the base station may or may not transmit the interference measurement resource setting to the terminal (S1520, S1620).
  • the terminal may perform the following operations based on the SINR report setting (S1430, S1530).
  • the SINR associated with the channel measurement reference signal resource is calculated using the first interference measurement result calculated based on the interference measurement resource.
  • the UE may report the SINR calculated through the above method to the base station (S1440, S1540).
  • the base station may receive the SINR report calculated from the terminal (S1440, S1630).
  • non-zero power channel state information reference signal; NZP CSI-RS
  • synchronization signal / physical broadcast channel synchronization
  • the interference measurement resource may include a zero power (ZP) interference measurement resource or a non-zero interference measurement resource.
  • the channel measurement reference signal resource and the interference measurement resource may be set on one orthogonal frequency division multiplexing (OFDM) symbol.
  • OFDM orthogonal frequency division multiplexing
  • the channel measurement reference signal resource and the interference measurement resource may be set according to a frequency division multiplexing (FDM) method on the one OFDM symbol.
  • FDM frequency division multiplexing
  • the terminal may include calculating the SINR related to the channel measurement reference signal resource using the first interference measurement result.
  • the terminal uses the second interference measurement result calculated based on the channel measurement reference signal resource and the channel measurement reference signal resource and Calculating the associated SINR may include the following actions:
  • the second interference measurement result is calculated by removing the signal of interest detected through the channel estimation from the channel measurement reference signal resource
  • the channel measurement reference signal resource in one resource block (RB) may be set on at least three subcarriers.
  • the channel measurement reference signal resource is a plurality of resources having a predetermined resource element (RE) interval on one orthogonal frequency division multiplexing (OFDM) symbol It can be set on REs.
  • RE resource element
  • the SINR may include a first layer (L1) -SINR.
  • QCL-D source may mean QCL characteristics (or QCL information) defined (or indicated) by qcl-Type2 in TCI-state.
  • 'CSI-RS resource' may mean 'NZP CSI-RS resource for channel measurement'.
  • the NZP CSI-RS resource may be utilized for tracking (eg, TRS) and / or beam management and / or CSI acquisition.
  • 'CSI-IM' may be replaced with 'ZP CSI-RS resource'.
  • a resource set / allocated for a channel measurement purpose to a terminal is referred to as a channel measurement resource (CMR), and a resource set / allocated for a interference measurement purpose to a terminal is referred to as an interference measurement resource (IMR).
  • IMR may be replaced with the term 'CSI-IM'.
  • the IMR may include a ZP (Zero Power) IMR in which a specific RS (reference signal) is not transmitted and a NZP (Non-Zero Power) IMR in which a specific RS is transmitted.
  • the term 'ZP IMR' may be extended / replaced to 'ZP CSI-RS'.
  • the role of the ZP CSI-RS may be RS configured / designated for PDSCH rate matching purposes as well as interference measurement purposes (or not interference measurement purposes).
  • 'CSI-IM' may be extended to 'NZP CSI-RS for interference management'.
  • the present disclosure may include all configurations in which 'CSI-IM' is replaced with 'NZP CSI-RS for interference management' in the following description.
  • the base station in order to calculate / acquire CSI (ie, CRI and / or RI and / or PMI and / or CQI), uses NZP CSI-RS for channel measurement to the UE.
  • Resource NZP CSI-RS resource for channel measurement
  • the base station may simultaneously set the CSI-IM resource (or ZP CSI-RS resource) for interference measurement to the terminal.
  • a beam-related reporting metric may include only L1-RSRP.
  • the base station can set only the NZP CSI-RS resource for channel measurement to the UE.
  • the base station does not additionally set a CSI-IM resource (or ZP CSI-RS resource) for interference measurement, or a CSI-IM resource (or ZP CSI-RS resource) for interference measurement. It may not be possible to set.
  • the new system eg, Rel-16 to NR system
  • a separate resource eg, CSI-IM resource or ZP CSI-RS resource
  • CSI-IM resource e.g., CSI-IM resource or ZP CSI-RS resource
  • a problem may arise that interference measurement performance is not guaranteed. This problem can be compensated through the implementation of the terminal, but has a drawback that requires a large number of samples on the time axis. In other words, the terminal implementation may cause a latency issue.
  • the base station needs to additionally set a resource (eg, CSI-IM resource or ZP CSI-RS resource) for interference measurement to the UE.
  • a resource eg, CSI-IM resource or ZP CSI-RS resource
  • this may cause additional RS overhead.
  • NZP CSI-RS resources for measuring multiple channels share a single interference measurement resource (eg, CSI-IM or ZP CSI-RS resource, etc.). It will be described in detail.
  • the terminal may perform CSI measurement based on the above-described setting methods (for example, CSI reporting related setting items disclosed in Section 1.9).
  • the association (or mapping) of the NZP CSI-RS resource for interference measurement and the NZP CSI-RS resource for channel measurement Relationship) can be assumed to be set equally to the relationship (or mapping relationship) of CSI-IM and NZP CSI-RS resources for channel measurement.
  • resources included in each NZP CSI-RS resource set in the CSI-IM resource set may have a connection relationship (or mapping relationship) with each other in a resource-wise order.
  • 17 is a diagram illustrating an operation example of a terminal and a base station according to the present disclosure.
  • one cell may set 6 (NZP) CSI-RS resources (for channel measurement) to the UE.
  • CSI-RS resource # 1 / # 2 may have a smaller beam width than CSI-RS resource # 0.
  • CSI-RS resource # 1 / # 2 may be set to be included in CSI-RS resource # 0.
  • CSI-RS resource # 10 and CSI-RS resource # 11 / # 12 may also be set similarly (ie, CSI-RS resource # 11 / # 12 has a smaller beam width than CSI-RS resource # 10). , Or CSI-RS resource # 10).
  • CSI-RS for beam management / tracking may be applied to CSI-RS resource # 0 / # 10.
  • SSB SS / PBCH Block
  • the base station can group the CSI-RS resource # 1 / # 2 / # 11 / # 12 into one resource set, and based on this, set the L1-SINR report to the UE.
  • the base station may additionally allocate a separate CSI-IM for interference power measurement to the terminal.
  • the base station can set the report for the L1-SINR calculation to the UE as follows.
  • NZP CSI-RS resource set ⁇ CSI-RS resource # 1, CSI-RS resource # 2, CSI-RS resource # 11, CSI-RS resource # 12 ⁇
  • CSI-IM resource set ⁇ CSI-IM # 21, CSI-IM # 22, CSI-IM # 31, CSI-IM # 32 ⁇
  • CSI-RS resource # 1 / # 2 / # 11 / # 12 may have an association relationship with CSI-IM # 21 / # 22 / # 31 / # 32, respectively (resource-wise association). Based on the above relationship, the terminal may calculate L1-SINR as follows.
  • L1-SINR for CSI-RS resource # 1 RSRP measured from CSI-RS resource # 1 / (Interference power measured from CSI-IM # 21 + alpha)
  • L1-SINR for CSI-RS resource # 2 RSRP measured from CSI-RS resource # 2 / (Interference power measured from CSI-IM # 22 + alpha)
  • L1-SINR for CSI-RS resource # 12 RSRP measured from CSI-RS resource # 12 / (Interference power measured from CSI-IM # 32 + alpha)
  • alpha means noise power.
  • the alpha value may be set to 0 or a non-zero value through higher layer signaling (eg, RRC signaling, MAC-CE, etc.).
  • the QCL-D of the CSI-IM may follow (or correspond to) the QCL-D of the CSI-RS resource having an association relationship. If the terminal can define a plurality of Rx beams at the same time (or if the terminal has the capability to control the plurality of Rx beams), the terminal uses a single CSI-IM resource (set) a plurality of Different interference powers can be measured as many as the number of Rx beams.
  • QCL-D is different CSI-RS resources (one) CSI- IM cannot be shared.
  • FIG. 18 is a diagram briefly showing a mapping pattern of CSI-RS resources and CSI-IM resources according to an example of the present disclosure.
  • the base station may set a CSI-IM corresponding to each CSI-RS resource to the UE.
  • the CSI-IM pattern is a 1 * 1 pattern, but in another example, the CSI-IM pattern may be modified into 2 * 1, 3 * 1, 4 * 1, 2 * 2 patterns, and the like.
  • the base station can set a different CSI-RS as a QCL-D source for a specific CSI-RS.
  • the base station sets CSI-RS resource # 0 as the QCL-D source of CSI-RS resource # 1 / # 2 (results, QCL-D of CSI-RS resource # 0 / # 1 / # 2 Are all the same), and the two CSI-RS resources can reuse CSI-IM # 0.
  • the base station does not need to separately set the CSI-IM # 21 and CSI-IM # 22 to the UE, so that RS overhead can be reduced.
  • the NZP CSI-RS resource set for channel measurement and CSI-IM resource set for interference measurement can be set as follows.
  • NZP CSI-RS resource set ⁇ CSI-RS resource # 1, CSI-RS resource # 2, CSI-RS resource # 11, CSI-RS resource # 12 ⁇
  • -CSI-RS resource # 1 / # 2 have the same QCL-D source as CSI-RS resource # 0
  • -CSI-RS resource # 11 / # 12 have the same QCL-D source as CSI-RS resource # 10
  • CSI-IM resource set ⁇ CSI-IM # 20, CSI-IM # 20, CSI-IM # 30, CSI-IM # 30 ⁇
  • the terminal may not expect the above-described setting. This is because the CSI-IM setting is wrong.
  • the base station and the terminal according to the present disclosure may operate as follows. At this time, for convenience of description, each operation method is described separately, but the base station and the terminal may be performed by combining the following various operation methods (except when physically impossible).
  • the base station may configure the UE to have a plurality of different NZP CSI-RS resources (eg, NZP CSI-RS resource for channel measurements) having the same QCL-D.
  • NZP CSI-RS resources eg, NZP CSI-RS resource for channel measurements
  • the UE can expect that one CSI-IM shared corresponding to the NZP CSI-RS resources is set (or, the UE has the same CSI-IM ID corresponding to the NZP CSI-RS resources). Can be expected).
  • the base station can configure the terminal to share the CSI-IM with the NZP CSI-RS resources. (Or, the base station may set the same CSI-IM ID for the NZP CSI-RS resources).
  • CSI-RS resource # 0 / # 10 is set as a wide beam, each of which is a fine beam CSI-RS resource # 1 / # 2 and CSI- It may be configured to include RS resource # 11 / # 12.
  • the base station can explicitly / implicitly set the following settings to the terminal.
  • NZP CSI-RS resource set ⁇ CSI-RS resource # 1, CSI-RS resource # 2, CSI-RS resource # 11, CSI-RS resource # 12 ⁇
  • -CSI-RS resource # 1 / # 2 have the same QCL-D source as CSI-RS resource # 0
  • -CSI-RS resource # 11 / # 12 have the same QCL-D source as CSI-RS resource # 10
  • CSI-IM resource set ⁇ CSI-IM # 20, CSI-IM # 20, CSI-IM # 30, CSI-IM # 30 ⁇
  • the base station may explicitly / implicitly set the following settings to the terminal.
  • the number of CSI-IM resources may be set smaller than the NZP CSI-RS resource. Accordingly, when the QCL-Ds of CSI-RS resource # 1 and # 2 are the same, the UE can expect that the two CSI-RS resources share one CSI-IM (eg, CSI-IM # 20). Similarly, when the QCL-Ds of CSI-RS resource # 3 and # 4 are the same, the UE can expect that the two CSI-RS resources share one CSI-IM (eg, CSI-IM # 30).
  • NZP CSI-RS resource set ⁇ CSI-RS resource # 1, CSI-RS resource # 2, CSI-RS resource # 11, CSI-RS resource # 12 ⁇
  • -CSI-RS resource # 1 / # 2 have the same QCL-D source as CSI-RS resource # 0
  • -CSI-RS resource # 11 / # 12 have the same QCL-D source as CSI-RS resource # 10
  • CSI-IM resource set ⁇ CSI-IM # 20, CSI-IM # 30 ⁇
  • the base station can explicitly / implicitly set the following settings to the terminal.
  • the UE expects that CSI-RS resource # 1 / # 2 / # 3 shares one CSI-IM (eg, CSI-IM # 20), and CSI-RS resource # 11 is another CSI. It can be expected to be associated with -IM (eg CSI-IM # 30).
  • NZP CSI-RS resource set ⁇ CSI-RS resource # 1, CSI-RS resource # 2, CSI-RS resource # 3, CSI-RS resource # 11 ⁇
  • -CSI-RS resource # 1 / # 2 / # 3 have the same QCL-D source as CSI-RS resource # 0
  • -CSI-RS resource # 11 have the same QCL-D source as CSI-RS resource # 10
  • CSI-IM resource set ⁇ CSI-IM # 20, CSI-IM # 30 ⁇
  • the base station can explicitly / implicitly set the following settings to the terminal.
  • CSI-RS resource # 0 and CSI-RS resource # 10 as QCL sources may be replaced with SSB # 0 and SSB # 1, respectively.
  • SSB # 0 / # 1 may be defined as a wide beam similar to CSI-RS resource # 0 / # 1.
  • TRS may be applied as a QCL-D source of CSI-RS resource for BM for beam management.
  • SSB # 0 / # 1 is a previously defined signal and may have characteristics of an always on signal. Therefore, when the SSB replaces CSI-RS resource # 0 / # 1, RS overhead may be reduced.
  • NZP CSI-RS resource set ⁇ CSI-RS resource # 1, CSI-RS resource # 2, CSI-RS resource # 11, CSI-RS resource # 12 ⁇
  • CSI-IM resource set ⁇ CSI-IM # 20, CSI-IM # 20, CSI-IM # 30, CSI-IM # 30 ⁇
  • each of the CSI-RS resource and the CSI-IM may implicitly have a relationship in a resource-wise order.
  • the base station may explicitly set / instruct the relationship between a plurality of NZP CSI-RS resources and CSI-IM.
  • the base station may set / define / instruct the corresponding one or more NZP CSI-RS resource (s) and the corresponding CSI-IM as one set.
  • the base station may set the following to the terminal.
  • NZP CSI-RS resources eg, NZP CSI-RS resources for channel measurement
  • the NZP CSI-RS resources are connected / mapped to the same CSI-IM.
  • the UE may measure one interference power from the CSI-IM and measure RSRP (Reference Signal Received Power) for each NZP CSI-RS resource.
  • RSRP Reference Signal Received Power
  • L1-SINR of each CSI-RS resource may be calculated using the RSRP and the interference power.
  • the UE connects to the plurality of CSI-RS resources.
  • the same CSI-IM may not be expected to be set (or, the same CSI-IM ID may not be expected to be set for the plurality of CSI-RS resources).
  • the base station determines the plurality of CSI-RSs.
  • the same CSI-IM may not be set for resources.
  • the terminal may not expect that the following settings are set.
  • NZP CSI-RS resource set ⁇ CSI-RS resource # 1, CSI-RS resource # 11 ⁇
  • -CSI-RS resource # 1 has the QCL-D source as CSI-RS resource # 0
  • -CSI-RS resource # 11 has the QCL-D source as CSI-RS resource # 10
  • the terminal In a terminal in which QCL-D is not applicable (or when 'QCL-TypeD' is not applicable), the terminal has a plurality of different CSI-RS resources (eg, NZP CSI-RS resources for channel measurement). You can expect to share one CSI-IM. (Or, it can be expected that the same CSI-IM ID is set for a plurality of different CSI-RS resources (eg, NZP CSI-RS resources for channel measurement).
  • CSI-RS resources eg, NZP CSI-RS resources for channel measurement.
  • the base station may set a plurality of NZP CSI-RS resources to share one CSI-IM.
  • QCL-D may also not be defined for CSI-IM. Therefore, there is no restriction on the reception beam (UE Rx beam) of the UE, the UE measures (i) interference power from one CSI-IM, and (ii) each NZP CSI-RS connected to the CSI-IM. Different L1-SINR for each CSI-RS resource may be calculated using RSRP measured from resources and the interference power.
  • the UE may not expect that QCL-D is different from CSI-RS resources (eg, NZP CSI-RS for channel measurement) and CSI-IM is FDM on the same OFDM symbol.
  • QCL-D of a specific CSI-IM may follow (or correspond to) QCL-D of a CSI-RS resource (eg, NZP CSI-RS for channel measurement) having a connection relationship with the CSI-IM.
  • the base station may set the QCL-D to have the same CSI-RS resource (eg, NZP CSI-RS for channel measurement) and CSI-IM FDM on the same OFDM symbol.
  • the base station must have two different OFDM symbols (One is for NZP CSI-RS for channel measurement). , and another is for CSI-IM).
  • the terminal can reduce the latency (latency) for calculating the L1-SINR.
  • the base station and the terminal can TDM more beams based on the above method.
  • 19 is a diagram briefly showing a mapping pattern of CSI-RS resources and CSI-IM resources according to another example of the present disclosure.
  • the base station has set the NZP CSI-RS resource set and CSI-IM resource set to the UE as follows.
  • NZP CSI-RS resource set ⁇ CSI-RS resource # 1, CSI-RS resource # 11 ⁇
  • -CSI-RS resource # 1 has the QCL-D source as CSI-RS resource # 0
  • -CSI-RS resource # 11 has the QCL-D source as CSI-RS resource # 10
  • CSI-IM # 31 has a connection relationship with CSI-RS resource # 11, and CSI-IM # 31 is CSI-RS resource # 11 or CSI-RS resource # 10 (QCL found through QCL-D linkage -D source) QCL-D (or correspond).
  • the base station since QCL-D of CSI-RS resource # 1 and CSI-IM # 31 are different, the base station transmits two different UE Rx beams to the UE to receive a signal on one OFDM symbol. It can be interpreted as setting.
  • CSI-RS resource # 11 and CSI-IM # 21 may also be set incorrectly.
  • the UE expects a configuration in which QCL-D is different from CSI-RS resources (eg, NZP CSI-RS for channel measurement) and CSI-IM is FDM on the same OFDM symbol. You may not.
  • CSI-RS resources eg, NZP CSI-RS for channel measurement
  • 'having the same QCL-D' is determined based on (i) the QCL-D source is the same, and (ii) QCL linkage. It may mean that the QCL-D source is the same, (iii) the QCL-D source and / or the QCL-D source determined based on the QCL linkage is the same.
  • whether to share the CSI-IM may be determined based on the QCL-D source set for the NZP CSI-RS resource. For example, the UE may determine whether to share the CSI-IM by considering only the QCL-D source set for the NZP CSI-RS resource (eg, QCL-D source acquired through QCL linkage is not used). As another example, the UE may determine whether to share the CSI-IM based on the QCL-D source acquired through QCL linkage.
  • the base station has set the following CSI-RS resource (eg, NZP CSI-RS resource for channel measurement) and CSI-IM to the UE.
  • the following CSI-RS resource eg, NZP CSI-RS resource for channel measurement
  • CSI-IM e.g, CSI-IM
  • CSI-RS resource # 0 has the QCL-D source as SSB # 0
  • NZP CSI-RS resource set ⁇ CSI-RS resource # 1, CSI-RS resource # 2 ⁇
  • -CSI-RS resource # 1 has the QCL-D source as CSI-RS resource # 0
  • -CSI-RS resource # 2 has the QCL-D source as SSB # 0
  • CSI-IM resource set ⁇ CSI-IM # 20, CSI-IM # 20 ⁇
  • the two CSI-RS resources may not be able to share the same CSI-IM (ie, when only the QCL-D source set for the NZP CSI-RS resource is considered).
  • CSI-RS resource # 1 which is QCL-D source of CSI-RS resource # 1
  • SSB # 0 QCL-D source.
  • the CSI-RS resource # 1 / # 2 may be interpreted as having the same QCL-D. Therefore, according to the 5-2 operation method, the two CSI-RS resources may share the same CSI-IM.
  • the 5-1 operation method and the 5-2 operation method may have the following advantages / disadvantages.
  • CSI-RS resource # 0 corresponds to a narrower beam than SSB # 0
  • the UE detects a good UE Rx beam using the CSI-RS resource # 0 (rather than when using SSB # 0).
  • the UE may use a better UE Rx beam (found using CSI-RS resource # 0) when receiving CSI-RS resource # 1. Therefore, the terminal can report the high quality L1-SINR to the base station. Accordingly, throughput improvement can be expected as a result.
  • CSI-RS resource # 0 corresponds to a narrower beam than SSB # 0, and the UE detects a good UE Rx beam using CSI-RS resource # 0 (than SSB # 0)
  • the UE should use the UE Rx beam (found using SSB # 0) when receiving CSI-IM # 20.
  • the UE should use the UE Rx beam found using SSB # 0, not the UE Rx beam found as CSI-RS resource # 0. Accordingly, the quality of the L1-SINR reported by the UE may be lower than the 5-1 operation method.
  • the UE uses the UE Rx beam (found as CSI-RS resource # 0) only when the CSI-RS resource # 1 is received, the quality of the L1-SINR may be improved.
  • the UE Rx beam is different from the UE Rx beam in which the UE receives the CSI-IM (QCL-D of the CSI-IM does not match the principle that it follows the NZP CSI-RS resource having a connection relationship), calculated A mismatch may occur between L1-SINR and actual L1-SINR values.
  • the above-described first to fifth operation methods may be effectively applied only when the UE reports to the base station that the number of UE Rx beams that can be simultaneously defined (or operable) by the UE is 1 as UE capability.
  • the UE only when the UE reports that the number of UE Rx beams that can be simultaneously defined (or operable) by the UE as UE capability to the base station is 1, the UE expects that the above-described first to fifth operation methods are applied. Can be.
  • the UE may report to the base station as UE capability (i) the number of UE Rx beams that the UE can simultaneously set and / or (ii) whether multiple UE Rx beams can be configured.
  • the base station can know whether the UE has set a plurality of UE Rx beams based on the UE capability. Accordingly, when the base station knows that the UE does not set (or is unable to set) a plurality of UE Rx beams, the base station bases a plurality of CSI-RS resources (eg, based on the above-described operation methods).
  • CSI-IM sharing of NZP CSI-RS resource for channel measurement and / or multiple CSI-RS resources (eg, NZP CSI-RS resource for channel measurement) and CSI-IM set to FDM on the same OFDM symbol You can decide whether it is possible.
  • the base station may configure the UE to share one CSI-IM with CSI-RS resources (eg, NZP CSI-RS for channel measurement) having the same QCL-D. Accordingly, RS overhead can be reduced.
  • CSI-RS resources eg, NZP CSI-RS for channel measurement
  • the base station may set the UE to share one CSI-IM with CSI-RS resources (eg, NZP CSI-RS for channel measurement). Accordingly, RS overhead can be reduced.
  • CSI-RS resources eg, NZP CSI-RS for channel measurement
  • the base station may set the QCL-D to have the same CSI-RS resource (eg, NZP CSI-RS for channel measurement) and CSI-IMs to be FDM on the same OFDM symbol. Accordingly, latency of the terminal may be reduced.
  • the same CSI-RS resource eg, NZP CSI-RS for channel measurement
  • CSI-IMs to be FDM on the same OFDM symbol. Accordingly, latency of the terminal may be reduced.
  • Whether the detected QCL-D source is the same may be considered. Accordingly, RS overhead can be reduced.
  • 20 is a diagram briefly showing an example of operation of a base station and a terminal according to the present disclosure.
  • the base station may transmit the NZP CSI-RS configuration (and CSI-IM resource configuration, QCL configuration, etc.) for channel measurement to the terminal.
  • the base station may transmit NZP CSI-RS resource and CSI-IM for channel measurement to the terminal. More specifically, the base station transmits a reference signal (eg, CSI-RS) through the NZP CSI-RS resource to the terminal, and transmits no signal or a specific signal through the CSI-IM resource.
  • a reference signal eg, CSI-RS
  • L1-SINR for each NZP CSI-RS resource may be calculated based on CSI-IM resources determined corresponding to each star. Specifically, L1-SINR for a specific NZP CSI-RS resource may be calculated based on (i) interference power measured from a corresponding CSI-IM and (ii) RSRP measured from the specific NZP CSI-RS resource. .
  • the terminal is a base station, (i) the calculated NZP CSI-RS L1-SINR for each resource, or (ii) the calculated L1-SINR of the best NZP CSI-RS resource ID and the resource and Related L1-SINR can be transmitted.
  • the base station may be separately configured to allow the terminal to report (i) or (ii).
  • 21 is a diagram briefly showing a network access and communication process between a terminal and a base station applicable to the present disclosure.
  • the terminal may perform a network access process to perform the above-described / suggested procedures and / or methods.
  • the terminal may receive and store system information and configuration information necessary to perform the above-described / suggested procedures and / or methods while accessing a network (eg, a base station) and store it in memory.
  • Configuration information necessary for the present invention may be received through higher layer (eg, RRC layer; Medium Access Control, MAC, layer, etc.) signaling.
  • a physical channel and a reference signal can be transmitted using beam-forming.
  • a beam management process may be performed to align beams between a base station and a terminal.
  • the signal proposed in the present invention can be transmitted / received using beam-forming.
  • RRC radio resource control
  • beam alignment may be performed based on a sync signal block (SSB).
  • SSB sync signal block
  • beam alignment in RRC CONNECTED mode may be performed based on CSI-RS (in DL) and SRS (in UL).
  • CSI-RS in DL
  • SRS in UL
  • a beam-related operation may be omitted in the following description.
  • a base station may periodically transmit an SSB (S2102).
  • the SSB includes PSS / SSS / PBCH.
  • the SSB can be transmitted using beam sweeping.
  • the base station may transmit Remaining Minimum System Information (RMSI) and Other System Information (OSI) (S2104).
  • the RMSI may include information (eg, PRACH configuration information) necessary for the UE to initially access the base station. Meanwhile, the terminal performs SSB detection and then identifies the best SSB.
  • the terminal may transmit the RACH preamble (Message 1, Msg1) to the base station using the PRACH resource linked / corresponding to the index (ie, beam) of the best SSB (S2106).
  • the beam direction of the RACH preamble is associated with PRACH resources. Association between PRACH resources (and / or RACH preamble) and SSB (index) may be established through system information (eg, RMSI).
  • the base station transmits a random access response (RAR) (Msg2) in response to the RACH preamble (S2108), and the UE uses Msg3 (eg, RRC Connection Request) using the UL grant in the RAR.
  • RAR random access response
  • Msg4 eg, RRC Connection Request
  • Msg4 may include RRC Connection Setup.
  • subsequent beam alignment may be performed based on SSB / CSI-RS (in DL) and SRS (in UL).
  • the terminal may receive SSB / CSI-RS (S2114).
  • SSB / CSI-RS may be used by the UE to generate a beam / CSI report.
  • the base station may request the beam / CSI report to the terminal through DCI (S2116).
  • the UE may generate a beam / CSI report based on the SSB / CSI-RS and transmit the generated beam / CSI report to the base station through PUSCH / PUCCH (S2118).
  • the beam / CSI report may include beam measurement results, information on a preferred beam, and the like.
  • the base station and the terminal can switch the beam based on the beam / CSI report (S2120a, S2120b).
  • the terminal and the base station may perform the procedures and / or methods described / proposed above.
  • the terminal and the base station process the information in the memory according to the proposal of the present invention based on the configuration information obtained in the network access process (eg, system information acquisition process, RRC connection process through RACH, etc.), and then wireless signal. Or transmit the received wireless signal and store it in memory.
  • the radio signal may include at least one of PDCCH, PDSCH, and RS (Reference Signal) for downlink, and at least one of PUCCH, PUSCH, and SRS for uplink.
  • 22 is a diagram briefly showing a DRX (Discontinuous Reception) cycle of a terminal applicable to the present disclosure. 22, the terminal may be in an RRC_CONNECTED state.
  • DRX Continuous Reception
  • the terminal may perform the DRX operation while performing the procedures and / or methods previously described / suggested.
  • the terminal in which DRX is set may lower power consumption by discontinuously receiving the DL signal.
  • DRX may be performed in a Radio Resource Control (RRC) _IDLE state, an RRC_INACTIVE state, or an RRC_CONNECTED state.
  • RRC_IDLE state and RRC_INACTIVE state DRX is used to discontinuously receive the paging signal.
  • RRC_CONNECTED DRX DRX performed in the RRC_CONNECTED state will be described (RRC_CONNECTED DRX).
  • the DRX cycle is composed of On Duration and Opportunity for DRX.
  • the DRX cycle defines a time interval in which On Duration is periodically repeated.
  • On Duration indicates a time period monitored by the UE to receive the PDCCH.
  • the UE performs PDCCH monitoring during On Duration.
  • the terminal operates an inactivity timer and maintains an awake state.
  • the terminal enters a sleep state after the On Duration is over. Accordingly, when DRX is set, PDCCH monitoring / reception may be discontinuously performed in the time domain in performing the above-described / suggested procedures and / or methods.
  • the PDCCH reception opportunity (eg, a slot having a PDCCH search space) may be discontinuously set according to the DRX setting.
  • PDCCH monitoring / reception may be continuously performed in the time domain in performing the above-described / suggested procedures and / or methods.
  • the PDCCH reception opportunity (eg, a slot having a PDCCH search space) may be continuously set in the present invention.
  • PDCCH monitoring may be limited in a time interval set as a measurement gap.
  • Table 15 shows the process of the terminal associated with the DRX (RRC_CONNECTED state).
  • DRX configuration information is received through higher layer (eg, RRC) signaling, and whether DRX ON / OFF is controlled by a DRX command of the MAC layer.
  • RRC higher layer
  • the UE may discontinuously perform PDCCH monitoring in performing the procedures and / or methods described / suggested in the present invention, as illustrated in FIG. 22.
  • MAC-CellGroupConfig includes configuration information necessary to set a medium access control (MAC) parameter for a cell group.
  • MAC-CellGroupConfig may also include configuration information about DRX.
  • MAC-CellGroupConfig defines DRX and may include information as follows.
  • -Value of drx-InactivityTimer Defines the length of time period in which the UE remains awake after the PDCCH opportunity where the PDCCH indicating the initial UL or DL data is detected.
  • -Value of drx-HARQ-RTT-TimerDL Defines the length of the maximum time interval from DL initial transmission to DL retransmission.
  • the UE maintains the awake state and performs PDCCH monitoring at every PDCCH opportunity.
  • FIG. 23 is a diagram briefly showing an operation example of a terminal and a base station according to an example of the present disclosure
  • FIG. 24 is a flowchart briefly showing an operation example of a terminal according to an example of the present disclosure
  • FIG. 25 is an example of this disclosure It is a flow chart showing an example of the operation of the base station according to the.
  • the terminal may receive DRX (discontinuous reception) configuration information from the base station (S2310, S2410). Based on the DRX configuration information, the terminal may perform a DRX operation.
  • DRX discontinuous reception
  • the base station may transmit the DRX configuration information to the terminal (S2310, S2510).
  • the terminal may perform monitoring of a physical downlink control channel (PDCCH) signal for an on duration (S2320, S2520). Through this, the terminal can receive a PDCCH signal from the base station during the on period (S2330).
  • a physical downlink control channel (PDCCH) signal for an on duration (S2320, S2520).
  • the base station may transmit the PDCCH signal to the terminal (S2330, S2520).
  • the terminal On the basis of the PDCCH signal successfully detected during the on period, the terminal may operate in an awake state for a predetermined period of time.
  • the terminal may receive configuration information for reporting a signal to interference noise ratio (SINR) from the base station (S2340, S2430).
  • SINR signal to interference noise ratio
  • the setting information for the SINR reporting may include (i) a plurality of channel measurement resource (CMR) settings and (ii) one or more interference measurement resource (IMR) settings. .
  • the base station may transmit configuration information for the SINR report to the terminal (S2340, S2530).
  • the base station provides the configuration information for the SINR report, (i) physical layer signaling (eg DCI), (ii) upper layer signaling (eg RRC, MAC-CE, etc.), (iii) physical layer signaling And based on the combination of higher layer signaling, it can be transmitted to the terminal.
  • one CMR setup includes a non-zero power channel state information-reference signal (NZP CSI-RS) resource or a synchronization signal / physical broadcast channel (SS). / PBCH) block resource.
  • NZP CSI-RS non-zero power channel state information-reference signal
  • SS physical broadcast channel
  • PBCH physical broadcast channel
  • one IMR configuration is channel state information-interference measurement (CSI-IM) resource or non-zero power channel state information reference signal (non-zero power channel state information-reference signal; NZP CSI- RS) resources.
  • CSI-IM channel state information-interference measurement
  • NZP CSI- RS non-zero power channel state information reference signal
  • the terminal may calculate SINR based on the setting information for reporting the SINR (S2350, S2440). More specifically, the terminal, based on the assumption that two or more CMR settings of the same QCL (Quasi Co Located) source (source) from the perspective of the spatial parameters associated among the plurality of CMR settings, the same IMR configuration, SINR related to the plurality of CMR settings may be calculated.
  • the number of the one or more IMR settings may be set to be less than the number of the CMR settings, based on at least two CMR settings having the same QCL source in terms of related spatial parameters. It can be (see the first operation method described above).
  • the number of the one or more IMR settings may be set equal to the number of the plurality of CMR settings.
  • the plurality of CMR settings and the one or more IMR settings may be related in a resource unit (resource wise).
  • the QCL source in terms of the related spatial parameters may be determined based on spatial reception parameters (spatial Rx parameters).
  • the QCL source in terms of the related spatial parameters includes (i) channel state information-reference signal (CSI-RS) resource information or (ii) synchronization signal / physical broadcast channel (synchronization). signal / physical broadcast channel (SS / PBCH) block information or (iii) tracking reference signal (TRS) information.
  • CSI-RS channel state information-reference signal
  • SS / PBCH physical broadcast channel
  • TRS tracking reference signal
  • the QCL source in terms of the related spatial parameters may include at least one or more of the following (see the fifth operation method described above).
  • the SINR associated with one CMR setting among the plurality of CMR settings includes: (i) a reference signal received power (RSRP) measured based on the one CMR setting, and (ii) ) It can be calculated based on the interference power measured based on the IMR setting related to the one CMR setting.
  • RSRP reference signal received power
  • the terminal may It can be assumed that the one CMR setting and the one IMR setting have QCL sources in terms of the same spatial parameter.
  • the terminal may report SINR related to the plurality of CMR settings to the base station (S2360, S2450).
  • the base station may receive a SINR report from the terminal (S2360, S2540).
  • the SINR may include L1-SINR defined as physical layer information.
  • the terminal (i) the first terminal reporting the UE capability (UE capability) information indicating that the number of receive beams that can be defined simultaneously is 1, or (ii) by the base station At the same time, it can correspond to at least one of the second terminal, in which the number of receive beams that can be defined is set to 1.
  • the examples of the proposed method described above can also be included as one of the implementation methods of the present disclosure, and thus can be regarded as a kind of proposed methods. Further, the above-described proposed schemes may be implemented independently, but may also be implemented in a combination (or merge) form of some suggested schemes. Whether the application of the proposed methods is applied (or information on the rules of the proposed methods) can be defined so that the base station notifies the UE through a predefined signal (eg, physical layer signal or higher layer signal). have.
  • a predefined signal eg, physical layer signal or higher layer signal.
  • Embodiments of the present disclosure can be applied to various wireless access systems.
  • various wireless access systems there are 3GPP (3rd Generation Partnership Project) or 3GPP2 system.
  • Embodiments of the present disclosure can be applied to not only the various wireless access systems, but also to all technical fields to which the various wireless access systems are applied.
  • the proposed method can also be applied to mmWave communication systems using ultra-high frequency bands.
  • embodiments of the present disclosure can also be applied to various applications such as free-driving vehicles, drones, and the like.

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Abstract

La présente invention concerne un procédé de fonctionnement d'un terminal et d'une station de base dans un système de communication sans fil, ainsi qu'un appareil permettant de prendre en charge ledit procédé. Selon un mode de réalisation applicable à la présente invention, un terminal pour lequel un mode de réception discontinue (DRX) est configuré peut calculer un rapport signal/brouillage plus bruit (SINR) et rapporter le SINR à la station de base. Le SINR est calculé dans l'hypothèse où, parmi une pluralité de configurations de ressources de mesure de canal (CMR) configurées pour le terminal, au moins deux configurations CMR ayant la même source quasi co-localisée (QCL) en vue d'un paramètre spécial associé partagent la même configuration de ressources de mesure de brouillage (IMR).
PCT/KR2019/014692 2018-11-02 2019-11-01 Procédé de fonctionnement d'un terminal et d'une station de base dans un système de communication sans fil et appareil permettant de prendre en charge ledit procédé WO2020091498A1 (fr)

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US20210377766A1 (en) * 2020-05-29 2021-12-02 Qualcomm Incorporated Signaling for group-based signal to interference plus noise ratio (sinr) beam report
CN114390554A (zh) * 2020-10-20 2022-04-22 维沃移动通信有限公司 信道状态信息确定方法、上报设置确定方法、装置及相关设备
CN115087014A (zh) * 2022-06-20 2022-09-20 中国联合网络通信集团有限公司 灵活帧结构仿真***的上行信号检测方法及装置
CN115941081A (zh) * 2022-08-10 2023-04-07 上海星思半导体有限责任公司 一种sinr计算方法、对数似然比量化方法及装置

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210377766A1 (en) * 2020-05-29 2021-12-02 Qualcomm Incorporated Signaling for group-based signal to interference plus noise ratio (sinr) beam report
US11765612B2 (en) * 2020-05-29 2023-09-19 Qualcomm Incorporated Signaling for group-based signal to interference plus noise ratio (SINR) beam report
CN114390554A (zh) * 2020-10-20 2022-04-22 维沃移动通信有限公司 信道状态信息确定方法、上报设置确定方法、装置及相关设备
CN115087014A (zh) * 2022-06-20 2022-09-20 中国联合网络通信集团有限公司 灵活帧结构仿真***的上行信号检测方法及装置
CN115087014B (zh) * 2022-06-20 2024-04-12 中国联合网络通信集团有限公司 灵活帧结构仿真***的上行信号检测方法及装置
CN115941081A (zh) * 2022-08-10 2023-04-07 上海星思半导体有限责任公司 一种sinr计算方法、对数似然比量化方法及装置
CN115941081B (zh) * 2022-08-10 2023-10-27 上海星思半导体有限责任公司 一种sinr计算方法、对数似然比量化方法及装置

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