WO2022021216A1 - Rapport de faisceau à base de groupe pour la transmission multi-trp dl avec mesure de l1-sinr - Google Patents

Rapport de faisceau à base de groupe pour la transmission multi-trp dl avec mesure de l1-sinr Download PDF

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Publication number
WO2022021216A1
WO2022021216A1 PCT/CN2020/105815 CN2020105815W WO2022021216A1 WO 2022021216 A1 WO2022021216 A1 WO 2022021216A1 CN 2020105815 W CN2020105815 W CN 2020105815W WO 2022021216 A1 WO2022021216 A1 WO 2022021216A1
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cri
resource
ssbri
nzp csi
csi
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PCT/CN2020/105815
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English (en)
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Bingchao LIU
Chenxi Zhu
Wei Ling
Yi Zhang
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Lenovo (Beijing) Limited
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Priority to PCT/CN2020/105815 priority Critical patent/WO2022021216A1/fr
Publication of WO2022021216A1 publication Critical patent/WO2022021216A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0636—Feedback format
    • H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports

Definitions

  • the subject matter disclosed herein generally relates to wireless communications, and more particularly relates to methods and apparatuses for group-based beam reporting with L1-SINR measurement for multi-TRP DL transmission.
  • a CSI reporting setting configured by higher layer parameter ‘CSI-ReportConfig’ IE is transmitted to the UE to configure the UE to report CSI quantities (parameters) .
  • the higher layer parameter ‘reportQuantity’ contained in ‘CSI-ReportConfig’ IE configures the UE with the CSI quantities (parameters) to be reported.
  • the parameters may include but not limited to CSI-RS resource indicator (CRI) and layer 1 Signal to Interference plus Noise Ratio (L1-SINR) (e.g. when ‘reportQuantity’ is set to ‘cri-SINR’ ) .
  • the ‘CSI-ReportConfig’ may be associated with one Resource Setting for channel measurement.
  • the Resource Setting (given by higher layer parameter ‘resourcesForChannelMeasurement’ ) is for both channel measurement and interference measurement on NZP CSI-RS for L1-SINR measurement.
  • UE may assume that the same 1 port NZP CSI-RS resource (s) with density 3 REs per RB is used for both channel and interference measurements.
  • a first Resource Setting (given by higher layer parameter ‘resourcesForChannelMeasurement’ ) is for channel measurement on NZP CSI-RS resources
  • a second Resource Setting (given by either higher layer parameter ‘csi-IM-ResourcesForInterference’ or higher layer parameter ‘NZP CSI-RS-ResourcesForInterference’ ) is for interference measurement performed on CSI-IM resources or on 1 port NZP CSI-RS resources with density 3 REs per RB.
  • Each NZP CSI-RS resource for channel measurement is associated with one CSI-IM (or one NZP CSI-RS resource) for interference measurement by the ordering of the NZP CSI-RS resource for channel measurement and CSI-IM resource (or NZP CSI-RS resource) for interference measurement in the corresponding resource sets.
  • the number of CSI-RS resources for channel measurement is equal to the number of CSI-IM resources (or of NZP CSI-RS resources) for interference measurement.
  • UE may apply the ‘QCL-TypeD’ RS configured to the NZP CSI-RS resource for channel measurement, as the reference RS for determining ‘QCL-TypeD’ assumption for the corresponding CSI-IM resource (or NZP CSI-RS resource) for interference measurement configured for one CSI reporting.
  • a first Resource Setting (given by higher layer parameter ‘resourcesForChannelMeasurement’ ) is for channel measurement on NZP CSI-RS resources.
  • a second Resource Setting (given by either higher layer parameter ‘csi-IM-ResourcesForInterference’ ) is for interference measurement performed on CSI-IM resources, where each NZP CSI-RS resource for channel measurement is associated with one CSI-IM resource for interference measurement.
  • a third Resource Setting (given by higher layer parameter ‘NZP CSI-RS-ResourcesForInterference’ ) is for interference measurement performed on 1 port NZP CSI-RS resources with density 3 REs per RB.
  • CRI is used to indicate at least one CSI-RS resource to derive the signal (s) to be measured for the L1-SINR.
  • the CSI-RS resource (s) are selected from CSI-RS resources associated with the ‘CSI-ReportConfig’ .
  • a ‘CSI-ReportConfig’ can be associated with CSI-RS resources in one or more Resource Settings.
  • the NZP CSI-RS resource to derive interference and noise to be measured is the same as the NZP CSI-RS resource to derive the signal to be measured.
  • the CSI-IM resource or NZP CSI-RS resource to derive interference and noise to be measured is selected from the second Resource Setting for interference measurement.
  • the L1-SINR for a CRI is computed according to the power of the NZP CSI-RS resource to derive the signal (indicated by the CRI) and the power of the CSI-IM resource or NZP CSI-RS resource to derive the interference and noise, where the CSI-IM resource or NZP CSI-RS resource to derive the interference and noise is associated with the NZP CSI-RS resource to derive the signal, i.e. the CSI-IM resource or NZP CSI-RS resource to derive the interference and noise and the NZP CSI-RS resource to derive the signal are simultaneously transmitted by the same TRP.
  • a plurality of the NZP CSI-RS resources associated with the ‘CSI-ReportConfig’ to derive the signal and their associated CSI-IM resource or NZP CSI-RS resource also associated with the ‘CSI-ReportConfig’ to derive the interference and noise are received by the UE.
  • the UE may compute L1-SINR for each NZP CSI-RS resource associated with the ‘CSI-ReportConfig’ derive the signal (indicated by a CRI) , by dividing the power of the signal by the power of the interference and noise (or the powers of the interferences and noises) .
  • the signal in L1-SINR measurement can be derived based on SSB (SS/PBCH block) resource.
  • SS/PBCH block contains a PSS (primary synchronization signal) , SSS (secondary synchronization signal) , and PBCH (physical broadcast channel) where each of them is transmitted by the gNB using a same spatial Tx beam.
  • PSS primary synchronization signal
  • SSS secondary synchronization signal
  • PBCH physical broadcast channel
  • the ‘CSI-ReportConfig’ is associated with one Resource Setting for channel measurement including SSB resources. From the UE point of view, a plurality of the SSB resources associated with the ‘CSI-ReportConfig’ to derive the signal and, if applicable, their associated CSI-IM resource or NZP CSI-RS resource also associated with the ‘CSI-ReportConfig’ to derive the interference and noise are received by the UE. The UE computes L1-SINR for each SSB resource associated with the ‘CSI-ReportConfig’ to derive the signal (indicated by a SSBRI) .
  • CSI-ReportConfig is associated at least with one Resource Setting for channel measurement, and the ‘reportQuantity’ is set to ‘cri-SINR’ or ‘ssb-Index-SINR’
  • the UE would report CRI or SSBRI and the corresponding computed L1-SINR.
  • CRIs or SSBRIs
  • L1-SINRs are reported in a CSI report.
  • Group based beam reporting is supported in NR Release 15 for L1-SINR based beam measurement, e.g. by setting ‘reportQuantity’ to ‘cri-SINR’ or ‘ssb-Index-SINR’ and configuring the UE with a higher layer parameter ‘groupBasedBeamReporting’ set to ‘enabled’ .
  • the UE shall report, in a single CSI report, two different CRIs (or SSBRIs) along with corresponding L1-SINRs, where the two CSI-RS resources (or SSB resources) indicated by the two different CRIs (or SSBRIs) can be received simultaneously by the UE either with a single spatial domain receive filter, or with multiple simultaneous spatial domain receive filters.
  • Table 0 gives an example of a CSI report, in which ‘reportQuantity’ is set to ‘cri-SINR’ or ‘ssb-Index-SINR’ ; and ‘groupBasedBeamReporting’ is set to ‘enabled’ .
  • SINR #1 is larger than SINR #2. Therefore, SINR #1 is quantized to a 7-bit value in the range [-23, 40]dB with 0.5 dB step size.
  • SINR #2 is reported by a differential value. That is, a differential value ‘differential SINR #2’ obtained by SINR #1 –SINR #2 is reported. The ‘differential SINR #2’ is computed with 1dB step size with a reference to the largest computed L1-SINR value (i.e., SINR #1) . The differential SINR #2 is quantized to a 4-bit value.
  • the CSI report in which at least one SINR is reported by differential SINR is referred to as differential L1-SINR based reporting.
  • the CSI or SSBRI feedback framework is designed for single-TRP scenario. That is, all of the NZP CSI-RS or SSB resources indicated by the reported CRIs or SSBRIs are assumed to be transmitted from one TRP.
  • any one of the two TRPs may transmit a DCI scheduling a PDSCH transmission transmitted from two TRPs (TRP#0 and TRP#1) where partial layer (s) of the PDSCH transmission are transmitted by one TRP (e.g. TRP#0) and other layers of the PDSCH transmission are transmitted by the other TRP (e.g. TRP#1) .
  • TCI Transmission Configuration Indication
  • Multi-DCI based multi-TRP DL transmission can be used for the scenario that two TRPs (e.g. TRP#0 and TRP#1) serve one UE with non-ideal backhaul.
  • any one of the two TRPs may transmit a DCI scheduling a PDSCH transmission transmitted by any one TRP (TRP#0 or TRP#1) .
  • the TCI field in the DCI points to a single TCI state for the PDSCH reception scheduled by the DCI. It means that in one slot, the UE may receive two DCIs transmitted by two TRPs and may receive two PDSCH transmissions simultaneously, each of which is transmitted by a separate TRP (TRP#0 or TRP#1) .
  • a higher layer parameter CORESETPoolIndex can be configured for each CORESET for TRP identification, where CORESET is used to identify a set of time-frequency resources for PDCCH transmission.
  • Group based beam reporting can be used in both the scenario of single-DCI based multi-TRP DL transmission and the scenario of multi-DCI based multi-TRP DL transmission, but needs to be enhanced.
  • two TRPs may schedule two PDSCH transmissions in a same slot using overlapped time-frequency resources with any possible TCI state combinations selected from two different TCI state sets associated with different TRPs.
  • NR Release 16 group based beam reporting may be inefficient for this scenario, because all reported CRI or SSBRI pairs for different ‘CSI-ReportConfig’s are independent.
  • This invention discloses methods and apparatuses for reporting CSI with L1-SINR measurement in scenarios of multi-TRP based DL transmission.
  • a method comprises transmitting a CSI reporting setting associated with two Resource Settings for channel measurement, and receiving a CSI report corresponding to the CSI reporting setting, wherein the CSI report includes two or more CRIs or SSBRIs and their corresponding computed signal to interference plus noise ratios.
  • the CSI reporting setting may be further associated with two Resource Settings for NZP CSI-RS based interference measurement.
  • the CSI reporting setting may be further associated with one Resource Setting for ZP CSI-RS based interference measurement.
  • the CSI report includes N pair (s) of CRIs or SSBRIs and their corresponding computed signal to interference plus noise ratios, N is configured by RRC signaling and is a positive integer.
  • the NZP CSI-RS or SSB resources for channel measurement indicated by CRIs or SSBRIs in each pair can be received simultaneously by UE.
  • the NZP CSI-RS or SSB resource indicated by one CRI or SSBRI in each pair is selected from a first Resource Setting for channel measurement, and the NZP CSI-RS or SSB resource indicated by the other CRI or SSBRI in the each pair is selected from a second Resource Setting for channel measurement.
  • a signal to interference plus noise ratio for one CRI or SSBRI in a pair is computed by dividing a power of signal for the one CRI or SSBRI by a power of interference plus noise for the one CRI or SSBRI, wherein the power of signal for the one CRI or SSBRI is the received power on the NZP CSI-RS or SSB resource indicated by the one CRI or SSBRI, and the power of interference plus noise for the one CRI or SSBRI is a total of (1) the interference measured on the NZP CSI-RS indicated by the one CRI or SSBRI and (2) the received power on the NZP CSI-RS resource for channel measurement indicated by the other CRI or SSBRI in the pair.
  • a signal to interference plus noise ratio for one CRI or SSBRI in a pair is computed by dividing a power of signal for the one CRI or SSBRI by a power of interference plus noise for the one CRI or SSBRI, wherein the power of signal for the one CRI or SSBRI is the received power on the NZP CSI-RS or SSB resource indicated by the one CRI or SSBRI, and the power of interference plus noise for the one CRI or SSBRI is a total of (1) the received power on the dedicated NZP CSI-RS resource for interference measurement associated with the NZP CSI-RS or SSB resource indicated by the one CRI or SSBRI; (2) the received power on the NZP CSI-RS resource for channel measurement indicated by the other CRI or SSBRI in the pair; and (3) the received power on the dedicated NZP CSI-RS resource for
  • a signal to interference plus noise ratio for one CRI or SSBRI in a pair is computed by dividing a power of signal for the one CRI or SSBRI by a power of interference plus noise for the one CRI or SSBRI, wherein the power of signal for the one CRI or SSBRI is the received power on the NZP CSI-RS or SSB resource indicated by the one CRI or SSBRI, and the power of interference plus noise for the one CRI or SSBRI is a total of (1) the received power on the NZP CSI-RS or SSB resource for channel measurement indicated by the other CRI or SSBRI in the pair; and (2) the received power on the dedicated ZP CSI-RS resource for interference measurement associated with the NZP CSI-RS or SSB resource indicated by the one CRI or SSBRI.
  • the CSI report includes two sets of CRIs or SSBRIs and their corresponding computed signal to interference plus noise ratios, where each set includes N CRIs or SSBRIs and their corresponding computed signal to interference plus noise ratios, N is configured by RRC signaling and is a positive integer.
  • the NZP CSI-RS or SSB resource for channel measurement indicated by any CRI or SSBRI in one set and the NZP CSI-RS or SSB resource for channel measurement indicated by any CRI or SSBRI in the other set can be simultaneously received by UE.
  • the NZP CSI-RS or SSB resource indicated by each CRI or SSBRI in the one set is selected from a first Resource Setting for channel measurement
  • the NZP CSI-RS or SSB resource indicated by each CRI or SSBRI in the other set is selected from a second Resource Setting for channel measurement.
  • a signal to interference plus noise ratio for one CRI or SSBRI in one set is computed by dividing a power of signal for the one CRI or SSBRI by a power of interference plus noise for the one CRI or SSBRI, wherein the power of signal for the one CRI or SSBRI is the received power on the NZP CSI-RS or SSB resource indicated by the one CRI or SSBRI, and the power of interference and noise for the one CRI or SSBRI is a total of (1) the interference measured on the NZP CSI-RS or SSB resource indicated by the one or SSBRI; and (2) an average of the received power (s) on N NZP CSI-RS or SSB resource (s) for channel measurement indicated by N CRI (s) or SSBRI (s) in the other set.
  • a signal to interference plus noise ratio for one CRI or SSBRI in one set is computed by dividing a power of signal for the one CRI or SSBRI by a power of interference plus noise for the one CRI or SSBRI, wherein the power of signal for the one CRI or SSBRI is the received power on the NZP CSI-RS or SSB resource indicated by the one CRI or SSBRI, and the power of interference and noise for the one CRI or SSBRI is a total of (1) the received power on the dedicated NZP CSI-RS resource for interference measurement associated with the NZP CSI-RS or SSB resource indicated by the one CRI or SSBRI; and (2) an average of the received power (s) on N NZP CSI-RS or SSB resource (s) for channel measurement indicated by N CRI (s) or SSBRI (s) in the other
  • a signal to interference plus noise ratio for one CRI or SSBRI in one set is computed by dividing a power of signal for the one CRI or SSBRI by a power of interference plus noise for the one CRI or SSBRI, wherein the power of signal for the one CRI or SSBRI is the received power on the NZP CSI-RS or SSB resource indicated by the one CRI or SSBRI, and the power of interference and noise for the one CRI or SSBRI is a total of (1) an average of the received power (s) on N NZP CSI-RS or SSB resource (s) for channel measurement indicated by N CRI (s) or SSBRI (s) in the other set; and (2) the received power on the dedicated ZP CSI-RS resource for interference measurement associated with the NZP CSI-RS or SSB resource indicated by the one CRI or SSBRI.
  • a base unit comprises a transmitter that transmits a CSI reporting setting associated with two Resource Settings for channel measurement, and a receiver that receives a CSI report corresponding to the CSI reporting setting, wherein the CSI report includes two or more CRIs or SSBRIs and their corresponding computed signal to interference plus noise ratios.
  • a method comprises receiving a CSI reporting setting associated with two Resource Settings for channel measurement, and transmitting a CSI report corresponding to the CSI reporting setting, wherein the CSI report includes two or more CRIs or SSBRIs and their corresponding computed signal to interference plus noise ratios.
  • a remote unit comprises a receiver that receives a CSI reporting setting associated with two Resource Settings for channel measurement, and a transmitter that transmits a CSI report corresponding to the CSI reporting setting, wherein the CSI report includes two or more CRIs or SSBRIs and their corresponding computed signal to interference plus noise ratios.
  • Figure 1 illustrates a first type of resource setting
  • Figure 2 illustrates a second type of resource setting
  • Figure 3 illustrates a third type of resource setting
  • Figure 4 is a schematic flow chart diagram illustrating an embodiment of a method
  • Figure 5 is a schematic flow chart diagram illustrating a further embodiment of a method.
  • Figure 6 is a schematic block diagram illustrating apparatuses according to one embodiment.
  • embodiments may be embodied as a system, apparatus, method, or program product. Accordingly, embodiments may take the form of an entirely hardware embodiment, an entirely software embodiment (including firmware, resident software, micro-code, etc. ) or an embodiment combining software and hardware aspects that may generally all be referred to herein as a “circuit” , “module” or “system” . Furthermore, embodiments may take the form of a program product embodied in one or more computer readable storage devices storing machine-readable code, computer readable code, and/or program code, referred to hereafter as “code” .
  • code computer readable storage devices storing machine-readable code, computer readable code, and/or program code, referred to hereafter as “code” .
  • the storage devices may be tangible, non-transitory, and/or non-transmission.
  • the storage devices may not embody signals. In a certain embodiment, the storage devices only employ signals for accessing code.
  • modules may be implemented as a hardware circuit comprising custom very-large-scale integration (VLSI) circuits or gate arrays, off-the-shelf semiconductors such as logic chips, transistors, or other discrete components.
  • VLSI very-large-scale integration
  • a module may also be implemented in programmable hardware devices such as field programmable gate arrays, programmable array logic, programmable logic devices or the like.
  • Modules may also be implemented in code and/or software for execution by various types of processors.
  • An identified module of code may, for instance, include one or more physical or logical blocks of executable code which may, for instance, be organized as an object, procedure, or function. Nevertheless, the executables of an identified module need not be physically located together, but, may include disparate instructions stored in different locations which, when joined logically together, include the module and achieve the stated purpose for the module.
  • a module of code may contain a single instruction, or many instructions, and may even be distributed over several different code segments, among different programs, and across several memory devices.
  • operational data may be identified and illustrated herein within modules and may be embodied in any suitable form and organized within any suitable type of data structure. This operational data may be collected as a single data set, or may be distributed over different locations including over different computer readable storage devices.
  • the software portions are stored on one or more computer readable storage devices.
  • the computer readable medium may be a computer readable storage medium.
  • the computer readable storage medium may be a storage device storing code.
  • the storage device may be, for example, but need not necessarily be, an electronic, magnetic, optical, electromagnetic, infrared, holographic, micromechanical, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing.
  • a storage device would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, random access memory (RAM) , read-only memory (ROM) , erasable programmable read-only memory (EPROM or Flash Memory) , portable compact disc read-only memory (CD-ROM) , an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
  • a computer-readable storage medium may be any tangible medium that can contain or store a program for use by or in connection with an instruction execution system, apparatus, or device.
  • Code for carrying out operations for embodiments may include any number of lines and may be written in any combination of one or more programming languages including an object-oriented programming language such as Python, Ruby, Java, Smalltalk, C++, or the like, and conventional procedural programming languages, such as the "C" programming language, or the like, and/or machine languages such as assembly languages.
  • the code may be executed entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server.
  • the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN) , or the connection may be made to an external computer (for example, through the Internet using an Internet Service Provider) .
  • LAN local area network
  • WAN wide area network
  • Internet Service Provider an Internet Service Provider
  • the code may also be stored in a storage device that can direct a computer, other programmable data processing apparatus, or other devices, to function in a particular manner, such that the instructions stored in the storage device produce an article of manufacture including instructions which implement the function specified in the schematic flowchart diagrams and/or schematic block diagrams block or blocks.
  • the code may also be loaded onto a computer, other programmable data processing apparatus, or other devices, to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the code executed on the computer or other programmable apparatus provides processes for implementing the functions specified in the flowchart and/or block diagram block or blocks.
  • each block in the schematic flowchart diagrams and/or schematic block diagrams may represent a module, segment, or portion of code, which includes one or more executable instructions of the code for implementing the specified logical function (s) .
  • the UE may receive multiple DL signals simultaneous from multiple TRPs with different spatial Rx parameters in FR2.
  • one ‘CSI-ReportConfig’ can be associated with only one Resource Setting for channel measurement that is related to one TRP.
  • one ‘CSI-ReportConfig’ can only be used to configure the UE to report CSI parameters (e.g. CRI and its corresponding L1-SINR) for one TRP. If CSI parameters for multiple TRPs (e.g. two TRPs) are to be reported, multiple (e.g. two) different ‘CSI-ReportConfig’s should be triggered to the UE with unnecessary measurement latency.
  • two Resource Settings for channel measurement (e.g. a first Resource Setting for channel measurement and a second Resource Setting for channel measurement) can be configured for a UE for one CSI reporting setting ‘CSI-ReportConfig’ , where the UE has the capability of simultaneous reception with different spatial Rx parameters in FR2. That is, one CSI reporting setting ‘CSI-ReportConfig’ can be associated with two Resource Settings for channel measurement.
  • Each of the first Resource Setting for channel measurement and the second Resource Setting for channel measurement has one or multiple NZP CSI-RS resource sets (or one or multiple SSB resource sets) , where each NZP CSI-RS resource set has one or multiple NZP CSI-RS resources (or each SSB resource set has one or multiple SSB resources) .
  • the UE when one CSI reporting setting ‘CSI-ReportConfig’ is associated with one or multiple NZP CSI-RS (or SSB) resource set (s) in the first Resource Setting for channel measurement and one or multiple NZP CSI-RS (or SSB) second resource set (s) in the second Resource Setting for channel measurement, the UE would be configured with one or more NZP CSI-RS (or SSB) resources in the first resource set (s) in the first Resource Setting for channel measurement and one or more NZP CSI-RS (or SSB) resources in the second resource set (s) in the second Resource Setting for channel measurement.
  • CSI-ReportConfig when one CSI reporting setting ‘CSI-ReportConfig’ is associated with one or multiple NZP CSI-RS (or SSB) resource set (s) in the first Resource Setting for channel measurement and one or multiple NZP CSI-RS (or SSB) second resource set (s) in the second Resource Setting for channel measurement.
  • the one or more NZP CSI-RS (or SSB) resources in the first NZP CSI-RS (or SSB) resource sets in the first Resource Setting for channel measurement associated with one CSI reporting setting ‘CSI-ReportConfig’ can be referred to as NZP CSI-RS (or SSB) resources selected from the first Resource Setting for channel measurement while the one or more NZP CSI-RS (or SSB) resources in the second NZP CSI-RS (or SSB) resource sets in the second Resource Setting for channel measurement associated with the one CSI reporting setting ‘CSI-ReportConfig’ can be referred to as NZP CSI-RS (or SSB) resources selected from the second Resource Setting for channel measurement.
  • the NZP CSI-RS (or SSB) resources selected from the first Resource Setting for channel measurement are transmitted from one TRP (e.g. TRP#0) ; and the NZP CSI-RS (or SSB) resources selected from the second Resource Setting for channel measurement are transmitted from the other TRP (e.g. TRP#1) .
  • the higher layer parameter ‘reportQuantity’ is set to ‘cri-SINR’ .
  • NZP CSI-RS resources are to be received by the UE to derive the signals to be measured for L1-SINRs. Accordingly, CRIs and their corresponding L1-SINRs will be reported.
  • the following embodiments also apply to the situation in which the higher layer parameter ‘reportQuantity’ is set to ‘ssb-Index-SINR, in which SSB resources are to be received by the UE to derive the signals to be measured for L1-SINRs, and SSBRIs and their corresponding L1-SINRs will be reported.
  • L1-SINR may be abbreviated as SINR.
  • two additional Resource Settings for NZP CSI-RS based interference measurement can be configured and associated with the one CSI reporting setting ‘CSI-ReportConfig’
  • one additional Resource Setting for ZP CSI-RS based interference measurement can be configured and associated with the one CSI reporting setting ‘CSI-ReportConfig’ .
  • NZP CSI-RS resources in the first Resource Setting for channel measurement and NZP CSI-RS resources in the first Resource Setting for NZP CSI-RS based interference measurement are transmitted from one TRP (e.g.
  • NZP CSI-RS resources in the second Resource Setting for channel measurement and NZP CSI-RS resources in the second Resource Setting for NZP CSI-RS based interference measurement are transmitted from the other TRP (e.g. TRP#1) .
  • one Resource Setting for channel measurement e.g. first Resource Setting for channel measurement
  • one Resource Setting for NZP CSI-RS based interference measurement e.g.
  • the NZP CSI-RS resources in the first Resource Setting for channel measurement are 1-to-1 mapped to the NZP CSI-RS resources in the first Resource Setting for NZP CSI-RS based interference measurement (that is, they are simultaneously transmitted by the same TRP) .
  • the second Resource Setting for channel measurement is associated with the second Resource Setting for NZP CSI-RS based interference measurement.
  • the number of ZP CSI-RS resources in the Resource Setting for ZP CSI-RS based interference measurement is equal to the maximum number of CSI-RS resources in the first (or second) Resource Setting for channel measurement.
  • the one additional Resource Setting for ZP CSI-RS based interference measurement is associated with the first (or second) Resource Setting for channel measurement, which means that the ZP CSI-RS resources in the additional Resource Setting for ZP CSI-RS based interference measurement are 1-to-1 mapped to the NZP CSI-RS resources in the first (or second) Resource Setting for channel measurement (that is, they are simultaneously transmitted by the same TRP) .
  • two Resource Settings for channel measurement, two Resource Settings for NZP CSI-RS based interference measurement, and one Resource Setting for ZP CSI-RS based interference measurement can be configured.
  • the CSI reporting setting ‘CSI-ReportConfig’ can be associated with multiple Resource Settings in different types. In a first type, the CSI reporting setting ‘CSI-ReportConfig’ is associated with only two Resource Settings for channel measurement. In a second type, the CSI reporting setting ‘CSI-ReportConfig’ is associated with two Resource Settings for channel measurement and two Resource Settings for NZP CSI-RS based interference measurement. In a third type, the CSI reporting setting ‘CSI-ReportConfig’ is associated with two Resource Settings for channel measurement and one Resource Setting for ZP CSI-RS based interference measurement.
  • a first embodiment is related to single-DCI based multi-TRP DL transmission.
  • the UE is configured with a CSI reporting setting ‘CSI-ReportConfig’ associated with at least two Resource Settings for channel measurement (e.g. first Resource Setting for channel measurement and second Resource Setting for channel measurement) ; (2) the higher layer parameter ‘reportQuantity’ is set to ‘cri-SINR’ ; (3) the UE is configured with a higher layer parameter ‘groupBasedBeamReporting’ set to ‘enabled’ ; and (4) A higher layer parameter ‘nrofReportedRS-Rel-17’ (set to ‘N’ ) is configured to the UE, where N is a positive integer. Under these conditions, a CSI report corresponding to the CSI reporting setting ‘CSI-ReportConfig’ is transmitted from the UE to the base station (e.g. gNB) .
  • the base station e.g. gNB
  • a PDSCH transmission is transmitted from two TRPs (e.g. TRP#0 and TRP#1) where partial layers of the PDSCH transmission are transmitted by one TRP (e.g. TRP#0) and other layers of the PDSCH transmission are transmitted by the other TRP (e.g. TRP#1) .
  • the NZP CSI-RS resources in the first Resource Setting for channel measurement are transmitted from one TRP (e.g. TRP#0) ; and the NZP CSI-RS resources in the second Resource Setting for channel measurement are transmitted from the other TRP (e.g. TRP#1) .
  • the UE When the higher layer parameter ‘reportQuantity’ is set to ‘cri-SINR’ , the UE should transmit a CSI report including CRI and the corresponding computed SINR.
  • the SINR is computed for the NZP CSI-RS resource (s) indicated by a CRI, we can say that the computed SINR corresponds to the CRI.
  • the higher layer parameter ‘nrofReportedRS-Rel-17’ indicates the number of pairs of different CRIs to be contained in the CSI report.
  • a first CRI indicates a NZP CSI-RS resource selected from the first Resource Setting for channel measurement associated with the ‘CSI-ReportConfig’ ; and a second CRI indicates a NZP CSI-RS resource selected from the second Resource Setting for channel measurement associated with the ‘CSI-ReportConfig’ .
  • the NZP CSI-RS resources indicated by each pair of reported CRIs i.e., one NZP CSI-RS resource transmitted from one TRP (e.g.
  • TRP#0 and the other NZP CSI-RS resource transmitted from the other TRP (e.g. TRP#1) ) can be received simultaneously by the UE either with a single spatial domain receive filter, or with multiple simultaneous spatial domain receive filters.
  • the RX filter of the UE used to receive the pair of NZP CSI-RS resources is up to UE implementation.
  • L1-SINR measurements are different in different three types of resource settings.
  • L1-SINR is obtained by dividing the power of signal by the power of interference and noise. So, the UE would measure the power of signal and the power of interference and noise in each of the three types. It can be seen that the “dividing the power of signal by the power of interference and noise” is a computation. Therefore, L1-SINR measurement can be also referred to as L1-SINR computation.
  • CSI-ReportConfig In a first type, only two Resource Settings for channel measurement are associated with CSI reporting setting ‘CSI-ReportConfig’ .
  • the UE derives the power of signal for one CRI in a pair by assuming the received power on the NZP CSI-RS resource for channel measurement indicated by the one CRI, and assumes that a total of (1) the interference measured on the NZP CSI-RS resource indicated by the one CRI; and (2) the received power on the NZP CSI-RS resource for channel measurement indicated by the other CRI in the pair corresponds to the power of interference and noise.
  • FIG. 1 An example is illustrated in Figure 1.
  • two Resource Settings for channel measurement i.e., a first Resource Setting for channel measurement ( ‘resourcesForChannelMeasurement’ ) and a second Resource Setting for channel measurement ( ‘resourcesForChannelMeasurement-r17’ )
  • a first Resource Setting for channel measurement ‘resourcesForChannelMeasurement’
  • a second Resource Setting for channel measurement ‘resourcesForChannelMeasurement-r17’
  • NZP CSI-RS resource#0-1-1 (indicated by CRI 0-1-1)
  • NZP CSI-RS resource#0-1-2 (indicated by CRI 0-1-2)
  • NZP CSI-RS resource#0-1-3 (indicated by CRI 0-1-3)
  • NZP CSI-RS resource#0-1-4 (indicated by CRI 0-1-4) belong to the first Resource Setting for channel measurement ( ‘resourcesForChannelMeasurement’ ) , and are transmitted from TRP#0.
  • NZP CSI-RS resource#1-1-1 (indicated by CRI 1-1-1)
  • NZP CSI-RS resource#1-1-2 (indicated by CRI 1-1-2)
  • NZP CSI-RS resource#1-1-3 (indicated by CRI 1-1-3)
  • NZP CSI-RS resource#1-1-4 (indicated by CRI 1-1-4) belong to the second Resource Setting for channel measurement ( ‘resourcesForChannelMeasurement-r17’ ) , and are transmitted from TRP#1.
  • a reported first pair of CRIs include CRI 0-1-1 indicating NZP CSI-RS resource#0-1-1 and CRI 1-1-2 indicating NZP CSI-RS resource#1-1-2, where NZP CSI-RS resource#0-1-1 and NZP CSI-RS resource#1-1-2 can be simultaneously received by the UE; and a reported second pair of CRIs include CRI 0-1-3 indicating NZP CSI-RS resource#0-1-3 and CRI 1-1-4 indicating NZP CSI-RS resource#1-1-4, where NZP CSI-RS resource#0-1-3 and NZP CSI-RS resource#1-1-4 can be simultaneously received by the UE.
  • the L1-SINR for CRI 0-1-1 is computed as follows: A power of signal for CRI 0-1-1 is the received power on NZP CSI-RS resource#0-1-1 transmitted from TRP#0 received by the UE with a specific beam (e.g. b0-1) . A power of interference and noise for CRI 0-1-1 power of interference and noise for CRI 0-1-1 is the total of (1) the interference measured on the NZP CSI-RS resource#0-1-1 by the specific beam (e.g.
  • NZP CSI-RS resource#1-1-2 (indicated by CRI 1-1-2, that is the other CRI in the pair to which CRI 0-1-1 belongs) transmitted from TRP#1 received by the UE with the same specific beam (e.g. b0-1) , where the NZP CSI-RS resource#0-1-1 and the NZP CSI-RS resource#1-1-2 can be simultaneously received by the UE.
  • the L1-SINR for CRI 0-1-1 is computed by dividing the power of signal for CRI 0-1-1 by the power of interference and noise for CRI 0-1-1.
  • the received power on NZP CSI-RS resource#0-1-1 is known.
  • the UE uses the specific beam (e.g. b0-1) to receive NZP CSI-RS resource#0-1- 1, the total received power comprises the received power on NZP CSI-RS resource#0-1-1 and other power for receiving interference.
  • the other power for receiving interference is referred to as “the interference measured on the NZP CSI-RS resource#0-1-1” .
  • the UE receives NZP CSI-RS resource#1-1-2 with the same beam as that for receiving NZP CSI-RS resource#0-1-1, which means that UE applies the ‘QCL-TypeD’ RS configured to the NZP CSI-RS resource for channel measurement (i.e., NZP CSI-RS resource#0-1-1) , as the ‘QCL-TypeD’ assumption for the NZP CSI-RS resource indicated by the other CRI in the pair (i.e., NZP CSI-RS resource#1-1-2) .
  • the ‘QCL-TypeD’ i.e. spatial Rx parameter
  • qcl-info configured for a resource
  • the ‘QCL-TypeD’ RS configured to the NZP CSI-RS resource for channel measurement refers to a DL reference signal, where the NZP CSI-RS resource for channel measurement is received with the same ‘QCL-TypeD’ (i.e. spatial Rx parameter) as that for receiving the DL reference signal.
  • the L1-SINR for CRI 0-1-3 is computed as follows:
  • a power of signal for CRI 0-1-3 is the received power on NZP CSI-RS resource#0-1-3 transmitted from TRP#0 by the UE with a specific beam (e.g. b0-3) .
  • a power of interference and noise for CRI 0-1-3 is the total of (1) the interference measured on the NZP CSI-RS resource#0-1-3 by the specific beam (e.g. b0-3) and (2) the received power on NZP CSI-RS resource#1-1-4 (indicated by CRI 1-1-4 that is the other CRI in the pair to which CRI 0-1-3 belongs) transmitted from TRP#1 received by the UE with the same specific beam (e.g.
  • the L1-SINR for CRI 0-1-3 is computed by dividing the power of signal for CRI 0-1-3 by the power of interference and noise for CRI 0-1-3.
  • the UE receives NZP CSI-RS resource#1-1-4 with the same beam as that for receiving NZP CSI-RS resource#0-1-3, which means that UE applies the ‘QCL-TypeD’ RS configured to the NZP CSI-RS resource for channel measurement (i.e., NZP CSI-RS resource#0-1-3) , as the ‘QCL-TypeD’ assumption for the NZP CSI-RS resource indicated by the other CRI in the pair (i.e., NZP CSI-RS resource#1-1-4) .
  • the L1-SINR for CRI 1-1-2 is computed as follows: A power of signal for CRI 1-1-2 is the received power on NZP CSI-RS resource#1-1-2 transmitted from TRP#1 received by the UE with a specific beam (e.g. b1-2) . A power of interference and noise for CRI 1-1-2 is the total of (1) the interference measured on the NZP CSI-RS resource#1-1-2 by the specific beam (e.g. b1-2) and (2) the received power on NZP CSI-RS resource#0-1-1 (indicated by CRI 0-1-1 that is the other CRI in the pair to which CRI 1-1-2 belongs) transmitted from TRP#0 received by the UE with the same specific beam (e.g.
  • the L1-SINR for CRI 1-1-2 is computed by dividing the power of signal for CRI 1-1-2 by the power of interference and noise for CRI 1-1-2.
  • the UE receives NZP CSI-RS resource#0-1-1 with the same beam as that for receiving NZP CSI-RS resource#1-1-2, which means that UE applies the ‘QCL-TypeD’ RS configured to the NZP CSI-RS resource for channel measurement (i.e., NZP CSI-RS resource#1-1-2) , as the ‘QCL-TypeD’ assumption for the NZP CSI-RS resource indicated by the other CRI in the pair (i.e., NZP CSI-RS resource#0-1-1) .
  • the L1-SINR for CRI 1-1-4 is computed as follows:
  • a power of signal for CRI 1-1-4 is the received power on NZP CSI-RS resource#1-1-4 transmitted from TRP#1 received by the UE with a specific beam (e.g. b1-4) .
  • a power of interference and noise for CRI 1-1-4 is the total of (1) the interference measured on the NZP CSI-RS resource#1-1-4 by the specific beam (e.g. b1-4) and (2) the received power on NZP CSI-RS resource#0-1-3 (indicated by CRI 0-1-3 that is the other CRI in the pair to which CRI 1-1-4 belongs) transmitted from TRP#0 received by the UE with the same specific beam (e.g.
  • the L1-SINR for CRI 1-1-4 is computed by dividing the power of signal for CRI 1-1-4 by the power of interference and noise for CRI 1-1-4.
  • the UE receives NZP CSI-RS resource#0-1-3 with the same beam as that for receiving NZP CSI-RS resource#1-1-4, which means that UE applies the ‘QCL-TypeD’ RS configured to the NZP CSI-RS resource for channel measurement (i.e., NZP CSI-RS resource#1-1-4) , as the ‘QCL-TypeD’ assumption for the NZP CSI-RS resource indicated by the other CRI in the pair (i.e., NZP CSI-RS resource#0-1-3) .
  • two Resource Settings for channel measurement and two Resource Settings for NZP CSI-RS based interference measurement are associated with the CSI reporting setting ‘CSI-ReportConfig’ .
  • the UE derives the power of signal for one CRI in a pair by assuming the received power on the NZP CSI-RS resource for channel measurement indicated by the one CRI, and assumes that a total of (1) received power on the dedicated NZP CSI-RS resource for interference measurement associated with the NZP CSI-RS resource for channel measurement indicated by the one CRI; (2) received power on the NZP CSI-RS resource for channel measurement indicated by the other CRI in the pair; and (3) received power on the dedicated NZP CSI-RS resource for interference measurement associated with the NZP CSI-RS resource for channel measurement indicated by the other CRI in the pair corresponds to the power of interference and noise.
  • FIG. 2 An example is illustrated in Figure 2.
  • NZP CSI-RS resource#0-1-1 (indicated by CRI 0-1-1)
  • NZP CSI-RS resource#0-1-2 (indicated by CRI 0-1-2)
  • NZP CSI-RS resource#0-1-3 (indicated by CRI 0-1-3)
  • NZP CSI-RS resource#0-1-4 (indicated by CRI 0-1-4) belong to the first Resource Setting for channel measurement ( ‘resourcesForChannelMeasurement’ ) , and are transmitted from TRP#0.
  • NZP CSI-RS-ResourcesForInterference ‘NZP CSI-RS-ResourcesForInterference’
  • NZP CSI-RS resource#1-1-1 (indicated by CRI 1-1-1)
  • NZP CSI-RS resource#1-1-2 (indicated by CRI 1-1-2)
  • NZP CSI-RS resource#1-1-3 (indicated by CRI 1-1-3)
  • NZP CSI-RS resource#1-1-4 (indicated by CRI 1-1-4) belong to the second Resource Setting for channel measurement ( ‘resourcesForChannelMeasurement-r17’ ) , and are transmitted from TRP#1.
  • a reported first pair of CRIs include CRI 0-1-1 indicating NZP CSI-RS resource#0-1-1 and CRI 1-1-2 indicating NZP CSI-RS resource#1-1-2, where NZP CSI-RS resource#0-1-1 and NZP CSI-RS resource#1-1-2 can be simultaneously received by the UE; and a reported second pair of CRIs include CRI 0-1-3 indicating NZP CSI-RS resource#0-1-3 and CRI 1-1-4 indicating NZP CSI-RS resource#1-1-4, where NZP CSI-RS resource#0-1-3 and NZP CSI-RS resource#1-1-4 can be simultaneously received by the UE.
  • the L1-SINR for CRI 0-1-1 is computed as follows: A power of signal for CRI 0-1-1 is the received power on NZP CSI-RS resource#0-1-1 transmitted from TRP#0 received by the UE with a specific beam (e.g. b0-1) . A power of interference and noise for CRI 0-1-1 is the total of (1) the received power on NZP CSI-RS resource#0-2-1 transmitted from TRP#0 received by the UE with the same specific beam (e.g.
  • NZP CSI-RS resource#0-2-1 is the interference resource 1-to-1 mapped to NZP CSI-RS resource#0-1-1
  • the received power on NZP CSI-RS resource#1-1-2 (indicated by CRI 1-1-2, that is the other CRI in the pair to which CRI 0-1-1 belongs) transmitted from TRP#1 received by the UE with the same specific beam (e.g. b0-1) , where NZP CSI-RS resource#0-1-1 and NZP CSI-RS resource#1-1-2 are simultaneously received by the UE; and (3) the received power on NZP CSI-RS resource#1-2-2 transmitted from TRP#1 received by the UE with the same specific beam (e.g.
  • NZP CSI-RS resource#1-2-2 is the interference resource 1-to-1 mapped to NZP CSI-RS resource#1-1-2.
  • the L1-SINR for CRI 0-1-1 is computed by dividing the power of signal for CRI 0-1-1 by the power of interference and noise for CRI 0-1-1.
  • the UE receives NZP CSI-RS resource#0-2-1, NZP CSI-RS resource#1-1-2 and NZP CSI-RS resource#1-2-2 with the same beam as that for receiving NZP CSI-RS resource#0-1-1, which means that UE applies the ‘QCL-TypeD’ RS configured to the NZP CSI-RS resource for channel measurement (i.e., NZP CSI-RS resource#0-1-1) , as the ‘QCL-TypeD’ assumptions for the NZP CSI-RS resource for interference measurement associated with NZP CSI-RS resource#0-1-1 (i.e., NZP CSI-RS resource#0-2-1) , for the NZP CSI-RS resource indicated by the other CRI in the pair (i.e., NZP CSI-RS resource#1-1-2) , and for the associated NZP CSI-RS resource for interference measurement with the NZP CSI-RS resource indicated by the other CRI in the pair (i.e., NZP
  • the L1-SINR for CRI 0-1-3 is computed as follows:
  • a power of signal for CRI 0-1-3 is the received power on NZP CSI-RS resource#0-1-3 transmitted from TRP#0 received by the UE with a specific beam (e.g. b0-3) .
  • a power of interference and noise for CRI 0-1-3 is the total of (1) the received power on NZP CSI-RS resource#0-2-3 transmitted from TRP#0 received by the UE with the same specific beam (e.g.
  • NZP CSI-RS resource#0-2-3 is the interference resource 1-to-1 mapped to NZP CSI-RS resource#0-1-3;
  • the received power on NZP CSI-RS resource#1-1-4 (indicated by CRI 1-1-4, that is the other CRI in the pair to which CRI 0-1-3 belongs) transmitted from TRP#1 received by the UE with the same specific beam (e.g. b0-3) , where NZP CSI-RS resource#0-1-3 and NZP CSI-RS resource#1-1-4 are simultaneously received by the UE; and (3) the received power on NZP CSI-RS resource#1-2-4 transmitted from TRP#1 received by the UE with the same specific beam (e.g.
  • NZP CSI-RS resource#1-2-4 is the interference resource 1-to-1 mapped to NZP CSI-RS resource#1-1-4.
  • the L1-SINR for CRI 0-1-3 is computed by dividing the power of signal for CRI 0-1-3 by the power of interference and noise for CRI 0-1-3.
  • the UE receives NZP CSI-RS resource#0-2-3, NZP CSI-RS resource#1-1-4, NZP CSI-RS resource#1-2-4, with the same beam as that for receiving NZP CSI-RS resource#0-1-3, which means that UE applies the ‘QCL-TypeD’ RS configured to the NZP CSI-RS resource for channel measurement (i.e., NZP CSI-RS resource#0-1-3) , as the ‘QCL-TypeD’ assumptions for the NZP CSI-RS resource for interference measurement associated with NZP CSI-RS resource#0-1-3 (i.e., NZP CSI-RS resource#0-2-3) , for the NZP CSI-RS resource indicated by the other CRI in the pair (i.e., NZP CSI-RS resource#1-1-4) , and for the associated NZP CSI-RS resource for interference measurement with the NZP CSI-RS resource indicated by the other CRI in the pair (i.e., NZP CSI-
  • the L1-SINR for CRI 1-1-2 is computed as follows: A power of signal for CRI 1-1-2 is the received power on NZP CSI-RS resource#1-1-2 transmitted from TRP#1 received by the UE with a specific beam (e.g. b1-2) . A power of interference and noise for CRI 1-1-2 is the total of (1) the received power on NZP CSI-RS resource#1-2-2 transmitted from TRP#1 received by the UE with the same specific beam (e.g.
  • NZP CSI-RS resource#1-2-2 is the interference resource 1-to-1 mapped to NZP CSI-RS resource#1-1-2;
  • the received power on NZP CSI-RS resource#0-1-1 (indicated by CRI 0-1-1, that is the other CRI in the pair to which CRI 1-1-2 belongs) transmitted from TRP#0 received by the UE with the same specific beam (e.g. b1-2) , where NZP CSI-RS resource#0-1-1 and NZP CSI-RS resource#1-1-2 are simultaneously received by the UE; and (3) the received power on NZP CSI-RS resource#0-2-1 transmitted from TRP#0 received by the UE with the same specific beam (e.g.
  • NZP CSI-RS resource#0-2-1 is the interference resource 1-to-1 mapped to NZP CSI-RS resource#0-1-1.
  • the L1-SINR for CRI 1-1-2 is computed by dividing the power of signal for CRI 1-1-2 by the power of interference and noise for CRI 1-1-2.
  • the UE receives NZP CSI-RS resource#1-2-2, NZP CSI-RS resource#0-1-1, NZP CSI-RS resource#0-2-1, with the same beam as that for receiving NZP CSI-RS resource#1-1-2, which means that UE applies the ‘QCL-TypeD’ RS configured to the NZP CSI-RS resource for channel measurement (i.e., NZP CSI-RS resource#1-1-2) , as the ‘QCL-TypeD’ assumptions for the NZP CSI-RS resource for interference measurement associated with NZP CSI-RS resource#1-1-2 (i.e., NZP CSI-RS resource#1-2-2) , for the NZP CSI-RS resource indicated by the other CRI in the pair (i.e., NZP CSI-RS resource#0-1-1) , and for the associated NZP CSI-RS resource for interference measurement with the NZP CSI-RS resource indicated by the other CRI in the pair (i.e., NZP
  • the L1-SINR for CRI 1-1-4 is computed as follows:
  • a power of signal for CRI 1-1-4 is the received power on NZP CSI-RS resource#1-1-4 transmitted from TRP#1 received by the UE with a specific beam (e.g. b1-4) .
  • a power of interference and noise for CRI 1-1-4 is the total of (1) the received power on NZP CSI-RS resource#1-2-4 transmitted from TRP#1 received by the UE with the same specific beam (e.g.
  • NZP CSI-RS resource#1-2-4 is the interference resource 1-to-1 mapped to NZP CSI-RS resource#1-1-4
  • the received power on NZP CSI-RS resource#0-1-3 (indicated by CRI 0-1-3, that is the other CRI in the pair to which CRI 1-1-4 belongs) transmitted from TRP#0 received by the UE with the same specific beam (e.g. b1-4) , where NZP CSI-RS resource#0-1-3 and NZP CSI-RS resource#1-1-4 are simultaneously received by the UE; and (3) the received power on NZP CSI-RS resource#0-2-3 transmitted from TRP#0 received by the UE with the same specific beam (e.g.
  • NZP CSI-RS resource#0-2-3 is the interference resource 1-to-1 mapped to NZP CSI-RS resource#0-1-3.
  • the L1-SINR for CRI 1-1-4 is computed by dividing the power of signal for CRI 1-1-4 by the power of interference and noise for CRI 1-1-4.
  • the UE receives NZP CSI-RS resource#1-2-4, NZP CSI-RS resource#0-1-3, NZP CSI-RS resource#0-2-3, with the same beam as that for receiving NZP CSI-RS resource#1-1-4, which means that UE applies the ‘QCL-TypeD’ RS configured to the NZP CSI-RS resource for channel measurement (i.e., NZP CSI-RS resource#1-1-4) , as the ‘QCL-TypeD’ assumptions for the NZP CSI-RS resource for interference measurement associated with NZP CSI-RS resource#1-1-4 (i.e., NZP CSI-RS resource#1-2-4) , for the NZP CSI-RS resource indicated by the other CRI in the pair (i.e., NZP CSI-RS resource#0-1-3) , and for the associated NZP CSI-RS resource for interference measurement with the NZP CSI-RS resource indicated by the other CRI in the pair (i.e., NZP CSI
  • two Resource Settings for channel measurement and one Resource Setting for ZP CSI-RS based interference measurement are associated with one CSI reporting setting ‘CSI-ReportConfig’ .
  • the UE derives the power of signal for one CRI in a pair by assuming the received power on the NZP CSI-RS resource for channel measurement indicated by the one CRI, and assumes that a total of (1) the received power on the NZP CSI-RS resource for channel measurement indicated by the other CRI in the pair; and (2) the received power on the dedicated ZP CSI-RS resource for interference measurement associated with the NZP CSI-RS resource for channel measurement indicated by the one CRI corresponds to the power of interference and noise.
  • FIG. 3 An example is illustrated in Figure 3.
  • NZP CSI-RS resource#0-1-1 (indicated by CRI 0-1-1)
  • NZP CSI-RS resource#0-1-2 (indicated by CRI 0-1-2)
  • NZP CSI-RS resource#0-1-3 (indicated by CRI 0-1-3)
  • NZP CSI-RS resource#0-1-4 (indicated by CRI 0-1-4) belong to the first Resource Setting for channel measurement ( ‘resourcesForChannelMeasurement’ ) , and are transmitted from TRP#0.
  • NZP CSI-RS resource#1-1-1 (indicated by CRI 1-1-1)
  • NZP CSI-RS resource#1-1-2 (indicated by CRI 1-1-2)
  • NZP CSI-RS resource#1-1-3 (indicated by CRI 1-1-3)
  • NZP CSI-RS resource#1-1-4 (indicated by CRI 1-1-4) belong to the second Resource Setting for channel measurement ( ‘NZP CSI-RS-ResourcesForInterference’ ) , and are transmitted from TRP#1.
  • ZP CSI-RS resource#2-1, ZP CSI-RS resource#2-2, ZP CSI-RS resource#2-3, and ZP CSI-RS resource#2-4 belong to ZP CSI-RS based interference measurement ( ‘ZP CSI-RS-ResourcesForInterference’ ) , and are transmitted from TRP#0 or TRP#1 (In Figure 3, they are illustrated as being transmitted from TRP#0) .
  • a reported first pair of CRIs include CRI 0-1-1 indicating NZP CSI-RS resource#0-1-1 and CRI 1-1-2 indicating NZP CSI-RS resource#1-1-2, where NZP CSI-RS resource#0-1-1 and NZP CSI-RS resource#1-1-2 can be simultaneously received by the UE; and a reported second pair of CRIs include CRI 0-1-3 indicating NZP CSI-RS resource#0-1-3 and CRI 1-1-4 indicating NZP CSI-RS resource#1-1-4, where NZP CSI-RS resource#0-1-3 and NZP CSI-RS resource#1-1-4 can be simultaneously received by the UE.
  • the L1-SINR for CRI 0-1-1 is computed as follows: A power of signal for CRI 0-1-1 is the received power on NZP CSI-RS resource#0-1-1 transmitted from TRP#0 received by the UE with a specific beam (e.g. b0-1) . A power of interference and noise for CRI 0-1-1 is the total of (1) the received power on NZP CSI-RS resource#1-1-2 (indicated by CRI 1-1-2, that is the other CRI in the pair to which CRI 0-1-1 belongs) transmitted from TRP#1 received by the UE with the same specific beam (e.g.
  • NZP CSI-RS resource#0-1-1 and NZP CSI-RS resource#1-1-2 are simultaneously received by the UE; and (2) the received power on ZP CSI-RS resource#2-1 by the UE with the same specific beam (e.g. b0-1) (As no power is actually transmitted from ZP CSI-RS resource#2-1 from TRP#0 or TRP#1, the received power on ZP CSI-RS resource#2-1 by the UE means the received power on the interference and noise received from other TRPs) .
  • the L1-SINR for CRI 0-1-1 is computed by dividing the power of signal for CRI 0-1-1 by the power of interference and noise for CRI 0-1-1.
  • the UE receives NZP CSI-RS resource#1-1-2 and ZP CSI-RS resource#2-1 with the same beam as that for receiving NZP CSI-RS resource#0-1-1, which means that UE applies the ‘QCL-TypeD’ RS configured to the NZP CSI-RS resource for channel measurement (i.e., NZP CSI-RS resource#0-1-1) , as the ‘QCL-TypeD’ assumptions for the NZP CSI-RS resource indicated by the other CRI in the pair (i.e., NZP CSI-RS resource#1-1-2) , and for the ZP CSI-RS resource for interference measurement associated with NZP CSI-RS resource#0-1-1 (i.e., ZP CSI-RS resource#2-1) .
  • the ‘QCL-TypeD’ RS configured to the NZP CSI-RS resource for channel measurement (i.e., NZP CSI-RS resource#0-1-1) , as the ‘QCL-TypeD’ assumptions for the N
  • the L1-SINR for CRI 0-1-3 is computed as follows:
  • a power of signal for CRI 0-1-3 is the received power on NZP CSI-RS resource#0-1-3 transmitted from TRP#0 received by the UE with a specific beam (e.g. b0-3) .
  • a power of interference and noise for CRI 0-1-3 is the total of (1) the received power on NZP CSI-RS resource#1-1-4 (indicated by CRI 1-1-4, that is the other CRI in the pair to which CRI 0-1-3 belongs) transmitted from TRP#1 received by the UE with the same specific beam (e.g.
  • NZP CSI-RS resource#0-1-3 and NZP CSI-RS resource#1-1-4 are simultaneously received by the UE; and (2) the received power on ZP CSI-RS resource#2-3 by the UE with the same specific beam (e.g. b0-3) (As no power is actually transmitted from ZP CSI-RS resource#2-3 from TRP#0 or TRP#1, the received power on ZP CSI-RS resource#2-3 by the UE means the received power on the interference and noise received from other TRPs) .
  • the L1-SINR for CRI 0-1-3 is computed by dividing the power of signal for CRI 0-1-3 by the power of interference and noise for CRI 0-1-3.
  • the UE receives NZP CSI-RS resource#1-1-4 and ZP CSI-RS resource#2-3 with the same beam as that for receiving NZP CSI-RS resource#0-1-3, which means that UE applies the ‘QCL-TypeD’ RS configured to the NZP CSI-RS resource for channel measurement (i.e., NZP CSI-RS resource#0-1-3) , as the ‘QCL-TypeD’ assumptions for the NZP CSI-RS resource indicated by the other CRI in the pair (i.e., NZP CSI-RS resource#1-1-4) , and for the ZP CSI-RS resource for interference measurement associated with NZP CSI-RS resource#0-1-3 (i.e., ZP CSI-RS resource#2-3) .
  • the L1-SINR for CRI 1-1-2 is computed as follows: A power of signal for CRI 1-1-2 is the received power on NZP CSI-RS resource#1-1-2 transmitted from TRP#1 received by the UE with a specific beam (e.g. b1-2) . A power of interference and noise for CRI 1-1-2 is the total of (1) the received power on NZP CSI-RS resource#0-1-1 (indicated by CRI 0-1-1, that is the other CRI in the pair to which CRI 1-1-2 belongs) transmitted from TRP#0 received by the UE with the same specific beam (e.g.
  • NZP CSI-RS resource#0-1-1 and NZP CSI-RS resource#1-1-2 are simultaneously received by the UE; and (2) the received power on ZP CSI-RS resource#2-2 by the UE with the same specific beam (e.g. b1-2) (As no power is actually transmitted from ZP CSI-RS resource#2-2 from TRP#0 or TRP#1, the received power on ZP CSI-RS resource#2-2 by the UE means the received power on the interference and noise received from other TRPs) .
  • the L1-SINR for CRI 1-1-2 is computed by dividing the power of signal for CRI 1-1-2 by the power of interference and noise for CRI 1-1-2.
  • the UE receives NZP CSI-RS resource#0-1-1 and ZP CSI-RS resource#2-2 with the same beam as that for receiving NZP CSI-RS resource#1-1-2, which means that UE applies the ‘QCL-TypeD’ RS configured to the NZP CSI-RS resource for channel measurement (i.e., NZP CSI-RS resource#1-1-2) , as the ‘QCL-TypeD’ assumptions for the NZP CSI-RS resource indicated by the other CRI in the pair (i.e., NZP CSI-RS resource#0-1-1) , and for the associated ZP CSI-RS resource for interference measurement associated with NZP CSI-RS resource#1-1-2 (i.e., ZP CSI-RS resource#2-2) .
  • the L1-SINR for CRI 1-1-4 is computed as follows:
  • a power of signal for CRI 1-1-4 is the received power on NZP CSI-RS resource#1-1-4 transmitted from TRP#1 received by the UE with a specific beam (e.g. b1-4) .
  • a power of interference and noise for CRI 1-1-4 is the total of (1) the received power on NZP CSI-RS resource#0-1-3 (indicated by CRI 0-1-3, that is the other CRI in the pair to which CRI 1-1-4 belongs) transmitted from TRP#0 received by the UE with the same specific beam (e.g.
  • NZP CSI-RS resource#0-1-3 and NZP CSI-RS resource#1-1-4 are simultaneously received by the UE; and (2) the received power on ZP CSI-RS resource#2-4 by the UE with the same specific beam (e.g. b1-4) (As no power is actually transmitted from ZP CSI-RS resource#2-4 from TRP#0 or TRP#1, the received power on ZP CSI-RS resource#2-4 by the UE means the received power on the interference and noise received from other TRPs) .
  • the L1-SINR for CRI 1-1-4 is computed by dividing the power of signal for CRI 1-1-4 by the power of interference and noise for CRI 1-1-4.
  • the UE receives NZP CSI-RS resource#0-1-3 and ZP CSI-RS resource#2-4 with the same beam as that for receiving NZP CSI-RS resource#1-1-4, which means that UE applies the ‘QCL-TypeD’ RS configured to the NZP CSI-RS resource for channel measurement (i.e., NZP CSI-RS resource#1-1-4) , as the ‘QCL-TypeD’ assumptions for the NZP CSI-RS resource indicated by the other CRI in the pair (i.e., NZP CSI-RS resource#0-1-3) , and for the associated ZP CSI-RS resource for interference measurement associated with NZP CSI-RS resource#1-1-4 (i.e., ZP CSI-RS resource#2-4) .
  • the number of pairs of CRIs to be contained in the CSI report is set by the higher layer parameter ‘nrofReportedRS-Rel-17’ .
  • the higher layer parameter ‘nrofReportedRS-Rel-17’ can be set to N (N is a positive integer) . If the higher layer parameter ‘nrofReportedRS-Rel-17’ is not configured, the N can be set as a default value, e.g. 1.
  • the n th pair of CRIs includes CRI # (0-n) and CRI # (1-n) .
  • the two CSI-RS resources for channel measurement indicated by CRIs in a pair can be received simultaneously by the UE.
  • the first CRI k (k ⁇ 0) in each pair of CRIs indicates the configured (k+1) th entry of the NZP CSI-RS Resources in the corresponding NZP CSI-RS-ResourceSet in the first Resource Setting for channel measurement associated with the ‘CSI-ReportConfig’ and if applicable (in the second type) also indicates the configured (k+1) th entry of the NZP CSI-RS Resources in the corresponding NZP CSI-RS-ResourceSet in the first Resource Setting for interference measurement associated with the ‘CSI-ReportConfig’
  • the second CRI k (k ⁇ 0) in each pair of CRIs indicates the configured (k+1) th entry of NZP CSI-RS Resources in the corresponding NZP CSI-RS-ResourceSet in the second Resource Setting for channel measurement associated with the ‘CSI-ReportConfig’ and if applicable (
  • CRI#0-1 takes a value ‘CRI 0’ , which indicates the configured (0+1) th (i.e., first) entry of associated nzp-CSI-RS Resource in the first Resource Setting for channel measurement associated with the ‘CSI-ReportConfig’ (i.e., NZP CSI-RS resource#0-1-1) and CRI#1-1 takes a value ‘CRI 1” , which indicates the configured (1+1) th (i.e., second) entry of associated nzp-CSI-RS Resource in the second Resource Setting for channel measurement associated with the ‘CSI-ReportConfig’ (i.e., NZP CSI-RS resource#1-1-2) .
  • CRI#0-2 takes a value ‘CRI 2’ , which indicates the configured (2+1) th (i.e., third) entry of associated nzp-CSI-RS Resource in the first Resource Setting for channel measurement associated with the ‘CSI-ReportConfig’ (i.e., NZP CSI-RS resource#0-1-3) and CRI#1-2 takes a value ‘CRI 3’ , which indicates the configured (3+1) th (i.e., fourth) entry of associated nzp-CSI-RS Resource in the second Resource Setting for channel measurement associated with the ‘CSI-ReportConfig’ (i.e., NZP CSI-RS resource#1-1-4) .
  • CRI#0-1 takes the value ‘CRI 0’ , which also indicates the configured (0+1) th (i.e., first) entry of associated nzp-CSI-RS Resource in the first Resource Setting for interference measurement associated with the ‘CSI-ReportConfig’ (i.e., NZP CSI-RS resource#0-2-1) and CRI#1-1 takes the value ‘CRI 1” , which also indicates the configured (1+1) th (i.e., second) entry of associated nzp-CSI-RS Resource in the second Resource Setting for interference measurement associated with the ‘CSI-ReportConfig’ (i.e., NZP CSI-RS resource#1-2-2) .
  • CRI#0-2 takes the value ‘CRI 2’ , which also indicates the configured (2+1) th (i.e., third) entry of associated nzp-CSI-RS Resource in the first Resource Setting for interference measurement associated with the ‘CSI-ReportConfig’ (i.e., NZP CSI-RS resource#0-2-3) and CRI#1-2 takes the value ‘CRI 3’ , which also indicates the configured (3+1) th (i.e., fourth) entry of associated nzp-CSI-RS Resource in the second Resource Setting for interference measurement associated with the ‘CSI-ReportConfig’ (i.e., NZP CSI-RS resource#1-2-4) .
  • the value of the higher layer parameter ‘nrofReportedRS-Rel-17’ can be set to other positive integers than 4.
  • CRI #0-1 and CRI #1-1 belong to the 1 st pair, and the NZP CSI-RS resource indicated by CRI #0-1 and the NZP CSI-RS resource indicated by CRI #1-1 can be received simultaneously by the UE.
  • CRI #0-2 and CRI #1-2 belong to the 2 nd pair, and the NZP CSI-RS resource indicated by CRI #0-2 and the NZP CSI-RS resource indicated by CRI #1-2 can be received simultaneously by the UE.
  • CRI #0-3 and CRI #1-3 belong to the 3 rd pair, and the NZP CSI-RS resource indicated by CRI #0-3 and the NZP CSI-RS resource indicated by CRI #1-3 can be received simultaneously by the UE.
  • CRI #0-4 and CRI #1-4 belong to the 4 th pair, and the NZP CSI-RS resource indicated by CRI #0-4 and the NZP CSI-RS resource indicated by CRI #1-4 can be received simultaneously by the UE.
  • CRI # (0-n) and CRI # (1-n) belong to the n th pair (n is 1 to N) , and the NZP CSI-RS resource indicated by CRI # (0-n) and the NZP CSI-RS resource indicated by CRI # (1-n) can be received simultaneously by the UE.
  • All of the NZP CSI-RS resources indicated by the first CRI in each pair are selected from the first Resource Setting for channel measurement (i.e., transmitted from one TRP (e.g. TRP#0) ) ; and all of the NZP CSI-RS resources indicated by the second CRI of each pair (e.g. CRI #1-1, CRI #1-2, CRI #1-3, and CRI #1-4) are selected from the second Resource Setting for channel measurement (i.e., transmitted from the other TRP (e.g. TRP#1) ) .
  • the SINR for each CRI is computed as described above.
  • Each CRI has its corresponding SINR.
  • SINRs can be reported by ways of differential L1-SINR based reporting.
  • SINR is quantized to a 7-bit value in the range [-23, 40] dBm with 0.5dB step size.
  • SINR #0-1 is represented by a 7-bit value.
  • SINR #0-1 is the maximum computed value among all of the computed values based on the selected CSI-RS resources in the first Resource Setting for channel measurement associated with the ‘CSI-ReportConfig’ .
  • SINR #0-1 is larger than any of SINR #0-2, SINR #0-3, and SINR #0-4.
  • the other SINRs are reported in a differential manner. That is, “Differential SINR #0-2” to “Differential SINR #0-4” and “Differential SINR #1-1” to “Differential SINR #1-4” are contained in the CSI report.
  • a differential SINR according to the first embodiment can be represented by a 5-bit value or a 6-bit value configured by RRC signaling.
  • “Differential SINR #m” (m is between 0-2 and 0-4) is a positive value.
  • SINR #m (m is between 1-1 and 1-4) is computed based on the NZP CSI-RS resources in the second Resource Setting for channel measurement, it is not predictable whether “SINR #m” (m is between 1-1 and 1-4) is smaller or larger than SINR #0-1.
  • differential SINR #m (m is between 1-1 and 1-4) may be a positive value or a negative value. Therefore, one bit of the representation of differential SINR (i.e., one bit of the 5-bit value or 6-bit value) , e.g. the most significant bit (MSB) of the differential SINR, may be used to indicate whether the differential value is positive (e.g. by ‘0’ ) or negative (e.g. by ‘1’ ) .
  • MSB most significant bit
  • SINR #0-1 is quantized to a 7-bit value in the range [-23, 40] dBm with 0.5dB step size.
  • “Differential SINR #m” (m is between 0-2 and 0-4 and between 1-1 and 1-4) is computed with 1dB step size with a reference to the SINR #0-1 and quantized to a 5-bit or 6-bit value including 1-bit to indicate whether the differential value is positive or negative.
  • a differential SINR may be larger than 16dB. Therefore, a 5-bit value (which may represent differential SINR as many as 32dB) may be used to represent the differential SINR. Take into consideration of the 1-bit to indicate whether the differential value is positive or negative, the differential SINR may be represented by a total of 6-bit value. If the differential SINR is still within 16dB, the differential SINR may be represented by a total of 5-bit value.
  • the choice of 5-bit value or 6-bit value can be configured by RRC signaling.
  • SINR #0-1 is the largest value among all of the computed values for the CSI-RS resources in the first Resource Setting for channel measurement associated with the ‘CSI-ReportConfig’ . It is not predictable whether SINR #0-1 is the largest value among all of the computed values for the NZP CSI-RS resources in both the first Resource Setting for channel measurement and the second Resource Setting for channel measurement associated with the ‘CSI-ReportConfig’ . Therefore, one bit of the representation of differential SINR has to be used to represent the positive or negative differential value.
  • Table 2 differs from Table 1 in an extra one bit “NZP CSI-RS resource indicated by CRI #0-1 is selected from which Resource Setting” . This one bit indicates whether the NZP CSI-RS resource indicated by CRI #0-1 is selected from the first Resource Setting for channel measurement or the second Resource Setting for channel measurement.
  • SINR #0-1 is the largest value among all of the computed values based on the selected NZP CSI-RS resources in both the first Resource Setting for channel measurement and the second Resource Setting for channel measurement associated with the ‘CSI-ReportConfig’ .
  • the NZP CSI-RS resources indicated by CRI #0-1 are also selected from the same Resource Setting, i.e., the first Resource Setting for channel measurement.
  • the NZP CSI-RS resources indicated by CRI # (1-n) are selected from a different Resource Setting, i.e., the second Resource Setting for channel measurement.
  • the NZP CSI-RS resources indicated by CRI #0-1 are selected from the second Resource Setting for channel measurement associated with the ‘CSI-ReportConfig’
  • the NZP CSI-RS resources indicated by CRI # (0-n) are an integer of 2 or more
  • CRI #0-2, CRI #0-3, and CRI #0-4 are also selected from the same Resource Setting, i.e., the second Resource Setting for channel measurement.
  • the NZP CSI-RS resources indicated by CRI # (1-n) (n is an integer of 1 or more) are selected from a different Resource Setting, i.e., the first Resource Setting for channel measurement.
  • SINR #0-1 is the maximum value among all of computed SINRs (SINR #0-1 to SINR #0-4 and SINR #1-1 to SINR #1-4) based on the selected NZP CSI-RS resources in both the first Resource Setting for channel measurement and the second Resource Setting for channel measurement associated with the ‘CSI-ReportConfig’ . So, all of SINR #0-2 to SINR #0-4 and SINR #1-1 to SINR #1-4 would be smaller than SINR #0-1, i.e., all of differential SINR #0-2 to differential SINR #0-4 and differential SINR #1-1 to differential SINR #1-4 would be positive values. So, it is unnecessary to use one bit for indicating whether the differential value is positive or negative in the representation of differential SINR.
  • 5-bit or 6-bit value for representing differential SINR according to the first example
  • 4-bit to represent a maximum differential SINR of 16dB
  • 5-bit to represent a maximum differential SINR of 32dB
  • the choice of 4-bit value or 5-bit value can be configured by RRC signaling.
  • Table 3 differs from Table 1 in that, in addition to SINR #0-1, all of other SINRs computed based on the NZP CRI-RS resources in the same Resource Setting, i.e., the first Resource Setting for channel measurement, associated with the ‘CSI-ReportConfig’ , are also reported with a 7-bit value. That is, all of SINR # (0-n) (n is an integer of 1 or more) (e.g. SINR #0-1, SINR #0-2, SINR #0-3, and SINR #0-4) are represented by a 7-bit value.
  • Each of “Differential SINR # (1-n) ” is represented a 5-bit value or a 6-bit value configured by RRC signaling.
  • differential SINR # (1-n) (n is a positive integer) may be a positive value or a negative value in the third example. Therefore, one bit of the representation of differential SINR (i.e., one bit of the 4-bit value or 5-bit value) , e.g. the most significant bit (MSB) of the differential SINR, may be used to indicate whether the differential value is positive (e.g. by ‘0’ ) or negative (e.g. by ‘1’ ) .
  • MSB most significant bit
  • N pairs of CRIs are contained in a single CSI report. This is useful for single-DCI based multi-TRP PDSCH transmission. That is, the TCI states containing the RS corresponding to each reported CRI pair with QCL-TypeD can be activated for one TCI codepoint for non-coherent joint PDSCH transmission in FR2.
  • a second embodiment is related to multi-DCI based multi-TRP DL transmission.
  • the UE is configured with a CSI reporting setting ‘CSI-ReportConfig’ associated with at least two Resource Settings for channel measurement (e.g. first Resource Setting for channel measurement and second Resource Setting for channel measurement) ; (2) the higher layer parameter ‘reportQuantity’ is set to ‘cri-SINR’ ; (3) the UE is configured with the higher layer parameter ‘groupBasedBeamReporting’ set to ‘enabled’ ; and (4) A higher layer parameter ‘nrofReportedRS-Rel-17’ (set to ‘N’ ) is configured to the UE, where N is a positive integer. Under these conditions, a CSI report will be transmitted from the UE to the base station (e.g. gNB) .
  • the base station e.g. gNB
  • any TRP may transmit a DCI scheduling a PDSCH transmission transmitted by any TRP (TRP#0 or TRP#1) . It means that in one slot, the UE may receive two DCIs transmitted by two TRPs and may receive two PDSCH transmissions simultaneously, each of which is transmitted by a separate TRP (TRP#0 or TRP#1) .
  • a higher layer parameter CORESETPoolIndex can be configured for each CORESET for TRP identification.
  • the CSI-RS resources in the first Resource Setting are transmitted from one TRP (e.g. TRP#0) ; and the CSI-RS resources in the second Resource Setting are transmitted from the other TRP (e.g. TRP#1) .
  • the UE When the higher layer parameter ‘reportQuantity’ is set to ‘cri-SINR’ , the UE should transmit a CSI report including CRI and the corresponding computed SINR.
  • the SINR is computed for the NZP CSI-RS resource indicated by a CRI, we can say that the computed SINR corresponds to the CRI.
  • the higher layer parameter ‘nrofReportedRS-Rel-17’ in the scenario of multi-DCI based multi-TRP DL transmission has a different meaning from that in the scenario of single-DCI based multi-TRP DL transmission.
  • the UE reports two sets of CRIs and the corresponding computed L1-SINRs, wherein a first set of CRIs indicate the selected NZP CSI-RS resources from the first Resource Setting for channel measurement associated with the ‘CSI-ReportConfig’ transmitted from TRP#0 and a second set of CRIs indicate the selected NZP CSI-RS resources from the second Resource Setting for channel measurement associated with the ‘CSI-ReportConfig’ transmitted from TRP#1.
  • the higher layer parameter ‘nrofReportedRS-Rel-17’ indicates the number ( ‘N’ ) of CRIs in each of the two sets.
  • the NZP CSI-RS resource indicated by any CRI in the first set and the NZP CSI-RS resource indicated by any CRI in the second set can be received simultaneously by the UE either with a single spatial domain receive filter, or with multiple simultaneous spatial domain receive filters.
  • the L1-SINR computations in the scenario of multi-DCI based multi-TRP DL transmission are also different in different types of resource settings.
  • the UE derives the power of signal by assuming the received power on the NZP CSI-RS resource for channel measurement indicated by one CRI in one set, and assumes that a total of (1) the interference measured on the NZP CSI-RS resource for channel measurement indicated by the one CRI in the one set; and (2) an average of the received power (s) on N NZP CSI-RS resource (s) for channel measurement indicated by N CRI (s) in the other set corresponds to the power of interference and noise.
  • Figure 1 can be also used to illustrate an example of the L1-SINR computations in the first type in the scenario of multi-DCI based multi-TRP DL transmission.
  • two Resource Settings for channel measurement i.e., a first Resource Setting for channel measurement ( ‘resourcesForChannelMeasurement’ ) and a second Resource Setting for channel measurement ( ‘resourcesForChannelMeasurement-r17’ )
  • a first Resource Setting for channel measurement ‘resourcesForChannelMeasurement’
  • a second Resource Setting for channel measurement ‘resourcesForChannelMeasurement-r17’
  • NZP CSI-RS resource#0-1-1 (indicated by CRI 0-1-1)
  • NZP CSI-RS resource#0-1-2 (indicated by CRI 0-1-2)
  • NZP CSI-RS resource#0-1-3 (indicated by CRI 0-1-3)
  • NZP CSI-RS resource#0-1-4 (indicated by CRI 0-1-4) belong to the first Resource Setting for channel measurement ( ‘resourcesForChannelMeasurement’ ) , and are transmitted from TRP#0.
  • NZP CSI-RS resource#1-1-1 (indicated by CRI 1-1-1)
  • NZP CSI-RS resource#1-1-2 (indicated by CRI 1-1-2)
  • NZP CSI-RS resource#1-1-3 (indicated by CRI 1-1-3)
  • NZP CSI-RS resource#1-1-4 (indicated by CRI 1-1-4) belong to the second Resource Setting for channel measurement ( ‘resourcesForChannelMeasurement-r17’ ) , and are transmitted from TRP#1.
  • CRI 0-1-1 indicating NZP CSI-RS resource#0-1-1 and CRI 0-1-3 indicating NZP CSI-RS resource#0-1-3 in the first set and CRI 1-1-2 indicating NZP CSI-RS resource#1-1-2 and CRI 1-1-4 indicating NZP CSI-RS resource#1-1-4 in the second set are to be reported, where any of NZP CSI-RS resource#0-1-1 and NZP CSI-RS resource#0-1-3 can be simultaneously received by the UE with any of NZP CSI-RS resource#1-1-2 and NZP CSI-RS resource#1-1-4.
  • the L1-SINR for CRI 0-1-1 in the first set is computed as follows:
  • a power of signal for CRI 0-1-1 is the received power on NZP CSI-RS resource#0-1-1 transmitted from TRP#0 received by the UE with a specific beam (e.g. b0-1) .
  • a power of interference and noise for CRI 0-1-1 is the total of (1) the interference measured on the NZP CSI-RS resource#0-1-1 by the specific beam (e.g.
  • NZP CSI-RS resource#1-1-2 and NZP CSI-RS resource#1-1-4 each indicated by CRI 1-1-2 and CRI 1-1-4, i.e., the reported CRIs in the second set
  • the NZP CSI-RS resource#0-1-1 can be simultaneously received by the UE with any of NZP CSI-RS resource#1-1-2 and NZP CSI-RS resource#1-1-4.
  • the L1-SINR for CRI 0-1-1 is computed by dividing the power of signal for CRI 0-1-1 by the power of interference and noise for CRI 0-1-1.
  • the NZP CSI-RS resource#0-1-1 is a known sequence
  • the received power on NZP CSI-RS resource#0-1-1 is known.
  • the total received power comprises the received power on NZP CSI-RS resource#0-1-1 and other power for receiving interference.
  • the other power for receiving interference is referred to as “the interference measured on the NZP CSI-RS resource#0-1-1” .
  • the UE receives NZP CSI-RS resource#1-1-2 and NZP CSI-RS resource#1-1-4 with the same beam as that for receiving NZP CSI-RS resource#0-1-1, which means that UE applies the ‘QCL-TypeD’ RS configured to the NZP CSI-RS resource for channel measurement (i.e., NZP CSI-RS resource#0-1-1) , as the ‘QCL-TypeD’ assumption for the NZP CSI-RS resources indicated by the reported CRI (s) in the other set (the second set) (i.e., NZP CSI-RS resource#1-1-2 and NZP CSI-RS resource#1-1-4) .
  • the ‘QCL-TypeD’ RS configured to the NZP CSI-RS resource for channel measurement (i.e., NZP CSI-RS resource#0-1-1) , as the ‘QCL-TypeD’ assumption for the NZP CSI-RS resources indicated by the reported CRI (s) in the other set
  • the L1-SINR for CRI 0-1-3 in the first set is computed as follows:
  • a power of signal for CRI 0-1-3 is the received power on NZP CSI-RS resource#0-1-3 transmitted from TRP#0 received by the UE with a specific beam (e.g. b0-3) .
  • a power of interference and noise for CRI 0-1-3 is the total of (1) the interference measured on the NZP CSI-RS resource#0-1-3 by the specific beam (e.g.
  • NZP CSI-RS resource#1-1-2 and NZP CSI-RS resource#1-1-4 (indicated by CRI 1-1-2 and CRI 1-1-4, i.e., the reported CRIs in the second set) transmitted from TRP#1 received by the UE with the same specific beam (e.g. b0-3) , where the NZP CSI-RS resource#0-1-3 can be simultaneously received by the UE with any of NZP CSI-RS resource#1-1-2 and NZP CSI-RS resource#1-1-4.
  • the L1- SINR for CRI 0-1-1 is computed by dividing the power of signal for CRI 0-1-1 by the power of interference and noise for CRI 0-1-1.
  • the UE receives NZP CSI-RS resource#1-1-2 and NZP CSI-RS resource#1-1-4 with the same beam as that for receiving NZP CSI-RS resource#0-1-3, which means that UE applies the ‘QCL-TypeD’ RS configured to the NZP CSI-RS resource for channel measurement (i.e., NZP CSI-RS resource#0-1-3) , as the ‘QCL-TypeD’ assumption for the NZP CSI-RS resources indicated by the reported CRI (s) in the other set (the second set) (i.e., NZP CSI-RS resource#1-1-2 and NZP CSI-RS resource#1-1-4) .
  • the L1-SINR for CRI 1-1-2 in the second set is computed as follows:
  • a power of signal for CRI 1-1-2 is the received power on NZP CSI-RS resource#1-1-2 transmitted from TRP#1 received by the UE with a specific beam (e.g. b1-2) .
  • a power of interference and noise for CRI 1-1-2 is the total of (1) the interference measured on the NZP CSI-RS resource#1-1-2 by the specific beam (e.g.
  • NZP CSI-RS resource#0-1-1 and NZP CSI-RS resource#0-1-3 are indicated by CRI 0-1-1 and CRI 0-1-3, i.e., the reported CRIs in the first set
  • the NZP CSI-RS resource#1-1-2 can be simultaneously received by the UE with any of NZP CSI-RS resource#0-1-1 and NZP CSI-RS resource#0-1-3.
  • the L1-SINR for CRI 1-1-2 is computed by dividing the power of signal for CRI 1-1-2 by the power of interference and noise for CRI 1-1-2.
  • the UE receives NZP CSI-RS resource#0-1-1 and NZP CSI-RS resource#0-1-3 with the same beam as that for receiving NZP CSI-RS resource#1-1-2, which means that UE applies the ‘QCL-TypeD’ RS configured to the NZP CSI-RS resource for channel measurement (i.e., NZP CSI-RS resource#1-1-2) , as the ‘QCL-TypeD’ assumption for the NZP CSI-RS resources indicated by the reported CRI (s) in the other set (the first set) (i.e., NZP CSI-RS resource#0-1-1 and NZP CSI-RS resource#0-1-3) .
  • the L1-SINR for CRI 1-1-4 in the second set is computed as follows:
  • a power of signal for CRI 1-1-4 is the received power on NZP CSI-RS resource#1-1-4 transmitted from TRP#1 received by the UE with a specific beam (e.g. b1-4) .
  • a power of interference and noise for CRI 1-1-4 is the total of (1) the interference measured on the NZP CSI-RS resource#1-1-4 by the specific beam (e.g.
  • NZP CSI-RS resource#0-1-1 and NZP CSI-RS resource#0-1-3 are indicated by CRI 0-1-1 and CRI 0-1-3, i.e., the reported CRIs in the first set
  • the NZP CSI-RS resource#1-1-4 can be simultaneously received by the UE with any of NZP CSI-RS resource#0-1-1 and NZP CSI-RS resource#0-1-3.
  • the L1-SINR for CRI 1-1-4 is computed by dividing the power of signal for CRI 1-1-4 by the power of interference and noise for CRI 1-1-4.
  • the UE receives NZP CSI-RS resource#0-1-1 and NZP CSI-RS resource#0-1-3 with the same beam as that for receiving NZP CSI-RS resource#1-1-4, which means that UE applies the ‘QCL-TypeD’ RS configured to the NZP CSI-RS resource for channel measurement (i.e., NZP CSI-RS resource#1-1-4) , as the ‘QCL-TypeD’ assumption for the NZP CSI-RS resources indicated by the reported CRI (s) in the other set (the first set) (i.e., NZP CSI-RS resource#0-1-1 and NZP CSI-RS resource#0-1-3) .
  • two Resource Settings for channel measurement and two Resource Settings for NZP CSI-RS based interference measurement are associated with the CSI reporting setting ‘CSI-ReportConfig’ .
  • the UE derives the power of signal by assuming the received power on the NZP CSI-RS resource for channel measurement indicated by one CRI in one set, and assumes that a total of (1) received power on the dedicated NZP CSI-RS resource for interference measurement associated with the NZP CSI-RS resource for channel measurement indicated by the one CRI; and (2) an average of the received power (s) on N NZP CSI-RS resource (s) for channel measurement indicated by N CRI (s) in the other set and N NZP CSI-RS resource (s) for interference measurement associated with the N NZP CSI-RS resource (s) for channel measurement indicated by the N CRI (s) in the other set corresponds to the power of interference and noise.
  • Figure 2 can be also used to illustrate an example of the L1-SINR computations in the second type in the scenario of multi-DCI based multi-TRP DL transmission.
  • NZP CSI-RS resource#0-1-1 (indicated by CRI 0-1-1)
  • NZP CSI-RS resource#0-1-2 (indicated by CRI 0-1-2)
  • NZP CSI-RS resource#0-1-3 (indicated by CRI 0-1-3)
  • NZP CSI-RS resource#0-1-4 (indicated by CRI 0-1-4) belong to the first Resource Setting for channel measurement ( ‘resourcesForChannelMeasurement’ ) , and are transmitted from TRP#0.
  • NZP CSI-RS-ResourcesForInterference ‘NZP CSI-RS-ResourcesForInterference’
  • NZP CSI-RS resource#1-1-1 (indicated by CRI 1-1-1)
  • NZP CSI-RS resource#1-1-2 (indicated by CRI 1-1-2)
  • NZP CSI-RS resource#1-1-3 (indicated by CRI 1-1-3)
  • NZP CSI-RS resource#1-1-4 (indicated by CRI 1-1-4) belong to the second Resource Setting for channel measurement ( ‘resourcesForChannelMeasurement-r17’ ) , and are transmitted from TRP#1.
  • CRI 0-1-1 indicating NZP CSI-RS resource#0-1-1 and CRI 0-1-3 indicating NZP CSI-RS resource#0-1-3 in the first set and CRI 1-1-2 indicating NZP CSI-RS resource#1-1-2 and CRI 1-1-4 indicating NZP CSI-RS resource#1-1-4 in the second set are to be reported, where any of NZP CSI-RS resource#0-1-1 and NZP CSI-RS resource#0-1-3 can be simultaneously received by the UE with any of NZP CSI-RS resource#1-1-2 and NZP CSI-RS resource#1-1-4.
  • the L1-SINR for CRI 0-1-1 in the first set is computed as follows:
  • a power of signal for CRI 0-1-1 is the received power on NZP CSI-RS resource#0-1-1 transmitted from TRP#0 received by the UE with a specific beam (e.g. b0-1) .
  • a power of interference and noise for CRI 0-1-1 is a total of (1) the received power on NZP CSI-RS resource#0-2-1 transmitted from TRP#0 received by the UE with the same specific beam (e.g.
  • NZP CSI-RS resource#0-2-1 is the interference resource 1-to-1 mapped to NZP CSI-RS resource#0-1-1 (i.e., NZP CSI-RS resource#0-2-1 is associated with NZP CSI-RS resource#0-1-1) and (2) an average of (2-1) the received powers on NZP CSI-RS resource#1-1-2 and NZP CSI-RS resource#1-2-2 transmitted from TRP#1 received by the UE with the same specific beam (e.g. b0-1) and (2-2) the received powers on NZP CSI-RS resource#1-1-4 and NZP CSI-RS resource#1-2-4 transmitted from TRP#1 received by the UE with the same specific beam (e.g.
  • NZP CSI-RS resource#0-1-1 can be simultaneously received by the UE with any of NZP CSI-RS resource#1-1-2 and NZP CSI-RS resource#1-1-4 (indicated by CRI 1-1-2 and CRI 1-1-4, i.e., the reported CRIs in the second set)
  • NZP CSI-RS resource#1-2-2 is the interference resource 1-to-1 mapped to NZP CSI-RS resource#1-1-2 (i.e., NZP CSI-RS resource#1-2-2 is associated with NZP CSI-RS resource#1-1-2)
  • NZP CSI-RS resource#1-2-4 is the interference resource 1-to-1 mapped to NZP CSI-RS resource#1-1-4 (i.e., NZP CSI-RS resource#1-2-4 is associated with NZP CSI-RS resource#1-1-4) .
  • the L1-SINR for CRI 0-1-1 is computed by dividing the power of signal for CRI 0-1-1 by the power of interference and noise for CRI 0-1-1.
  • the UE receives NZP CSI-RS resource#0-2-1, NZP CSI-RS resource#1-1-2, NZP CSI-RS resource#1-2-2, NZP CSI-RS resource#1-1-4 and NZP CSI-RS resource#1-2-4 with the same beam as that for receiving NZP CSI-RS resource#0-1-1, which means that UE applies the ‘QCL-TypeD’ RS configured to the NZP CSI-RS resource for channel measurement indicated by the one CRI in the one set (the first set) (i.e., NZP CSI-RS resource#0-1-1) , as the ‘QCL-TypeD’ assumptions for the associated NZP CSI-RS resource for interference measurement (i.e., NZP CSI-RS resource#0-2-1) , for the NZP CSI-RS
  • the L1-SINR for CRI 0-1-3 in the first set is computed as follows:
  • a power of signal for CRI 0-1-3 is the received power on NZP CSI-RS resource#0-1-3 transmitted from TRP#0 received by the UE with a specific beam (e.g. b0-3) .
  • a power of interference and noise for CRI 0-1-3 is a total of (1) the received power on NZP CSI-RS resource#0-2-3 transmitted from TRP#0 received by the UE with the same specific beam (e.g.
  • NZP CSI-RS resource#0-2-3 is the interference resource 1-to-1 mapped to NZP CSI-RS resource#0-1-3 (i.e., NZP CSI-RS resource#0-2-3 is associated with NZP CSI-RS resource#0-1-3) and (2) an average of (2-1) the received powers on NZP CSI-RS resource#1-1-2 and NZP CSI-RS resource#1-2-2 transmitted from TRP#1 received by the UE with the same specific beam (e.g. b0-3) and (2-2) the received powers on NZP CSI-RS resource#1-1-4 and NZP CSI-RS resource#1-2-4 transmitted from TRP#1 received by the UE with the same specific beam (e.g.
  • NZP CSI-RS resource#0-1-3 can be simultaneously received by the UE with any of NZP CSI-RS resource#1-1-2 and NZP CSI-RS resource#1-1-4 (indicated by CRI 1-1-2 and CRI 1-1-4, i.e., the reported CRIs in the second set)
  • NZP CSI-RS resource#1-2-2 is the interference resource 1-to-1 mapped to NZP CSI-RS resource#1-1-2 (i.e., NZP CSI-RS resource#1-2-2 is associated with NZP CSI-RS resource#1-1-2)
  • NZP CSI-RS resource#1-2-4 is the interference resource 1-to-1 mapped to NZP CSI-RS resource#1-1-4 (i.e., NZP CSI-RS resource#1-2-4 is associated with NZP CSI-RS resource#1-1-4) .
  • the L1-SINR for CRI 0-1-3 is computed by dividing the power of signal for CRI 0-1-3 by the power of interference and noise for CRI 0-1-3.
  • the UE receives NZP CSI-RS resource#0-2-3, NZP CSI-RS resource#1-1-2, NZP CSI-RS resource#1-2-2, NZP CSI-RS resource#1-1-4 and NZP CSI-RS resource#1-2-4 with the same beam as that for receiving NZP CSI-RS resource#0-1-3, which means that UE applies the ‘QCL-TypeD’ RS configured to the NZP CSI-RS resource for channel measurement indicated by the one CRI in the one set (the first set) (i.e., NZP CSI-RS resource#0-1-3) , as the ‘QCL-TypeD’ assumptions for the associated NZP CSI-RS resource for interference measurement (i.e., NZP CSI-RS resource#0-2-3) , for the NZP CSI-RS resource (s) for
  • the L1-SINR for CRI 1-1-2 in the second set is computed as follows:
  • a power of signal for CRI 1-1-2 is the received power on NZP CSI-RS resource#1-1-2 transmitted from TRP#1 received by the UE with a specific beam (e.g. b1-2) .
  • a power of interference and noise for CRI 1-1-2 is a total of (1) the received power on NZP CSI-RS resource#1-2-2 transmitted from TRP#1 received by the UE with the same specific beam (e.g.
  • NZP CSI-RS resource#1-2-2 is the interference resource 1-to-1 mapped to NZP CSI-RS resource#1-1-2 (i.e., NZP CSI-RS resource#1-2-2 is associated with NZP CSI-RS resource#1-1-2) and (2) an average of (2-1) the received powers on NZP CSI-RS resource#0-1-1 and NZP CSI-RS resource#0-2-1 transmitted from TRP#0 received by the UE with the same specific beam (e.g. b1-2) and (2-2) the received powers on NZP CSI-RS resource#0-1-3 and NZP CSI-RS resource#0-2-3 transmitted from TRP#0 received by the UE with the same specific beam (e.g.
  • NZP CSI-RS resource#1-1-2 can be simultaneously received by the UE with any of NZP CSI-RS resource#0-1-1 and NZP CSI-RS resource#0-1-3 (indicated by CRI 0-1-1 and CRI 0-1-3, i.e., the reported CRIs in the first set)
  • NZP CSI-RS resource#0-2-1 is the interference resource 1-to-1 mapped to NZP CSI-RS resource#0-1-1 (i.e., NZP CSI-RS resource#0-2-1 is associated with NZP CSI-RS resource#0-1-1)
  • NZP CSI-RS resource#0-2-3 is the interference resource 1-to-1 mapped to NZP CSI-RS resource#0-1-3 (i.e., NZP CSI-RS resource#0-2-3 is associated with NZP CSI-RS resource#0-1-3) .
  • the L1-SINR for CRI 1-1-2 is computed by dividing the power of signal for CRI 1-1-2 by the power of interference and noise for CRI 1-1-2.
  • the UE receives NZP CSI-RS resource#1-2-2, NZP CSI-RS resource#0-1-1, NZP CSI-RS resource#0-2-1, NZP CSI-RS resource#0-1-3 and NZP CSI-RS resource#0-2-3 with the same beam as that for receiving NZP CSI-RS resource#1-1-2, which means that UE applies the ‘QCL-TypeD’ RS configured to the NZP CSI-RS resource for channel measurement indicated by the one CRI in the one set (the second set) (i.e., NZP CSI-RS resource#1-1-2) , as the ‘QCL-TypeD’ assumptions for the associated NZP CSI-RS resource for interference measurement (i.e., NZP CSI-RS resource#1-2-2) , for the NZP CSI-RS resource (s) for channel
  • the L1-SINR for CRI 1-1-4 in the second set is computed as follows:
  • a power of signal for CRI 1-1-4 is the received power on NZP CSI-RS resource#1-1-4 transmitted from TRP#1 received by the UE with a specific beam (e.g. b1-4) .
  • a power of interference and noise for CRI 1-1-4 is a total of (1) the received power on NZP CSI-RS resource#1-2-4 transmitted from TRP#1 received by the UE with the same specific beam (e.g.
  • NZP CSI-RS resource#1-2-4 is the interference resource 1-to-1 mapped to NZP CSI-RS resource#1-1-4 (i.e., NZP CSI-RS resource#1-2-4 is associated with NZP CSI-RS resource#1-1-4) and (2) an average of (2-1) the received powers on NZP CSI-RS resource#0-1-1 and NZP CSI-RS resource#0-2-1 transmitted from TRP#0 received by the UE with the same specific beam (e.g. b1-4) and (2-2) the received powers on NZP CSI-RS resource#0-1-3 and NZP CSI-RS resource#0-2-3 transmitted from TRP#0 received by the UE with the same specific beam (e.g.
  • NZP CSI-RS resource#1-1-4 can be simultaneously received by the UE with any of NZP CSI-RS resource#0-1-1 and NZP CSI-RS resource#0-1-3 (indicated by CRI 0-1-1 and CRI 0-1-3, i.e., the reported CRIs in the first set)
  • NZP CSI-RS resource#0-2-1 is the interference resource 1-to-1 mapped to NZP CSI-RS resource#0-1-1 (i.e., NZP CSI-RS resource#0-2-1 is associated with NZP CSI-RS resource#0-1-1)
  • NZP CSI-RS resource#0-2-3 is the interference resource 1-to-1 mapped to NZP CSI-RS resource#0-1-3 (i.e., NZP CSI-RS resource#0-2-3 is associated with NZP CSI-RS resource#0-1-3) .
  • the L1-SINR for CRI 1-1-4 is computed by dividing the power of signal for CRI 1-1-4 by the power of interference and noise for CRI 1-1-4.
  • the UE receives NZP CSI-RS resource#1-2-4, NZP CSI-RS resource#0-1-1, NZP CSI-RS resource#0-2-1, NZP CSI-RS resource#0-1-3 and NZP CSI-RS resource#0-2-3 with the same beam as that for receiving NZP CSI-RS resource#1-1-4, which means that UE applies the ‘QCL-TypeD’ RS configured to the NZP CSI-RS resource for channel measurement indicated by the one CRI in the one set (the second set) (i.e., NZP CSI-RS resource#1-1-4) , as the ‘QCL-TypeD’ assumptions for the associated NZP CSI-RS resource for interference measurement (i.e., NZP CSI-RS resource#1-2-4) , for the NZP CSI-RS resource (s) for channel
  • two Resource Settings for channel measurement and one Resource Setting for ZP CSI-RS based interference measurement are associated with one CSI reporting setting ‘CSI-ReportConfig’ .
  • the UE derives the power of signal for one CRI in one set by assuming the received power on the NZP CSI-RS resource for channel measurement indicated by the one CRI, and assumes that a total of (1) an average of the received power (s) on N NZP CSI-RS resource (s) for channel measurement indicated by N CRI (s) in the other set; and (2) the received power on the dedicated ZP CSI-RS resource for interference measurement associated with the NZP CSI-RS resource for channel measurement indicated by the one CRI corresponds to the power of interference and noise.
  • Figure 3 can be also used to illustrate an example of the L1-SINR computations in the third type in the scenario of multi-DCI based multi-TRP DL transmission.
  • two Resource Settings for channel measurement i.e., a first Resource Setting for channel measurement ( ‘resourcesForChannelMeasurement’ ) and a second Resource Setting for channel measurement ( ‘resourcesForChannelMeasurement-r17’ )
  • one Resource Setting for ZP CSI-RS based interference measurement i.e., ‘ZP CSI-RS-Re
  • NZP CSI-RS resource#0-1-1 (indicated by CRI 0-1-1)
  • NZP CSI-RS resource#0-1-2 (indicated by CRI 0-1-2)
  • NZP CSI-RS resource#0-1-3 (indicated by CRI 0-1-3)
  • NZP CSI-RS resource#0-1-4 (indicated by CRI 0-1-4) belong to the first Resource Setting for channel measurement ( ‘resourcesForChannelMeasurement’ ) , and are transmitted from TRP#0.
  • NZP CSI-RS resource#1-1-1 (indicated by CRI 1-1-1)
  • NZP CSI-RS resource#1-1-2 (indicated by CRI 1-1-2)
  • NZP CSI-RS resource#1-1-3 (indicated by CRI 1-1-3)
  • NZP CSI-RS resource#1-1-4 (indicated by CRI 1-1-4) belong to the second Resource Setting for channel measurement ( ‘NZP CSI-RS-ResourcesForInterference’ ) , and are transmitted from TRP#1.
  • ZP CSI-RS resource#2-1, ZP CSI-RS resource#2-2, ZP CSI-RS resource#2-3, and ZP CSI-RS resource#2-4 belong to ZP CSI-RS based interference measurement ( ‘ZP CSI-RS- ResourcesForInterference’ ) , and are transmitted from TRP#0 or TRP#1 (In Figure 3, they are illustrated as being transmitted from TRP#0) .
  • CRI 0-1-1 indicating NZP CSI-RS resource#0-1-1 and CRI 0-1-3 indicating NZP CSI-RS resource#0-1-3 in the first set and CRI 1-1-2 indicating NZP CSI-RS resource#1-1-2 and CRI 1-1-4 indicating NZP CSI-RS resource#1-1-4 in the second set are to be reported, where any of NZP CSI-RS resource#0-1-1 and NZP CSI-RS resource#0-1-3 can be simultaneously received by the UE with any of NZP CSI-RS resource#1-1-2 and NZP CSI-RS resource#1-1-4.
  • the L1-SINR for CRI 0-1-1 in the first set is computed as follows:
  • a power of signal for CRI 0-1-1 is the received power on NZP CSI-RS resource#0-1-1 transmitted from TRP#0 received by the UE with a specific beam (e.g. b0-1) .
  • a power of interference and noise for CRI 0-1-1 is a total of (1) an average of the received powers on NZP CSI-RS resource#1-1-2 and NZP CSI-RS resource#1-1-4 (indicated by CRI 1-1-2 and CRI 1-1-4, i.e., the reported CRIs in the other set (the second set) ) transmitted from TRP#1 received by the UE with the same specific beam (e.g.
  • the NZP CSI-RS resource#0-1-1 can be simultaneously received by the UE with any of NZP CSI-RS resource#1-1-2 and NZP CSI-RS resource#1-1-4; and (2) the received power on ZP CSI-RS resource#2-1 received by the UE with the same specific beam (e.g. b0-1) (As no power is actually transmitted from ZP CSI-RS resource#2-1 from TRP#0 or TRP#1, the received power on ZP CSI-RS resource#2-1 by the UE means the received power on the interference and noise received from other TRPs) .
  • the same specific beam e.g. b0-1
  • the L1-SINR for CRI 0-1-1 is computed by dividing the power of signal for CRI 0-1-1 by the power of interference and noise for CRI 0-1-1.
  • the UE receives NZP CSI-RS resource#1-1-2, NZP CSI-RS resource#1-1-4 and ZP CSI-RS resource#2-1 with the same beam as that for receiving NZP CSI-RS resource#0-1-1, which means that UE applies the ‘QCL-TypeD’ RS configured to the NZP CSI-RS resource for channel measurement indicated by the one CRI in the one set (the first set) (i.e., NZP CSI-RS resource#0-1-1) , as the ‘QCL-TypeD’ assumptions for the NZP CSI-RS resource (s) indicated by the reported CRI (s) in the other set (the second set) (i.e., NZP CSI-RS resource#1-1-2 and NZP CSI-RS resource#1-1-4) , and for the Z
  • the L1-SINR for CRI 0-1-3 in the first set is computed as follows:
  • a power of signal for CRI 0-1-3 is the received power on NZP CSI-RS resource#0-1-3 transmitted from TRP#0 received by the UE with a specific beam (e.g. b0-3) .
  • a power of interference and noise for CRI 0-1-3 is a total of (1) an average of the received powers on NZP CSI-RS resource#1-1-2 and NZP CSI-RS resource#1-1-4 (indicated by CRI 1-1-2 and CRI 1-1-4, i.e., the reported CRIs in the other set (the second set) ) transmitted from TRP#1 received by the UE with the same specific beam (e.g.
  • the NZP CSI-RS resource#0-1-1 can be simultaneously received by the UE with any of NZP CSI-RS resource#1-1-2 and NZP CSI-RS resource#1-1-4; and (2) the received power on ZP CSI-RS resource#2-3 received by the UE with the same specific beam (e.g. b0-3) (As no power is actually transmitted from ZP CSI-RS resource#2-3 from TRP#0 or TRP#1, the received power on ZP CSI-RS resource#2-3 by the UE means the received power on the interference and noise received from other TRPs) .
  • the L1-SINR for CRI 0-1-3 is computed by dividing the power of signal for CRI 0-1-3 by the power of interference and noise for CRI 0-1-3.
  • the UE receives NZP CSI-RS resource#1-1-2, NZP CSI-RS resource#1-1-4 and ZP CSI-RS resource#2-3 with the same beam as that for receiving NZP CSI-RS resource#0-1-3, which means that UE applies the ‘QCL-TypeD’ RS configured to the NZP CSI-RS resource for channel measurement indicated by the one CRI in the one set (the first set) (i.e., NZP CSI-RS resource#0-1-3) , as the ‘QCL-TypeD’ assumptions for the NZP CSI-RS resource (s) indicated by the reported CRI (s) in the other set (the second set) (i.e., NZP CSI-RS resource#1-1-2 and NZP CSI-RS resource#1-1-4) , and for the ZP CSI-
  • the L1-SINR for CRI 1-1-2 in the second set is computed as follows:
  • a power of signal for CRI 1-1-2 is the received power on NZP CSI-RS resource#1-1-2 transmitted from TRP#1 received by the UE with a specific beam (e.g. b1-2) .
  • a power of interference and noise for CRI 1-1-2 is a total of (1) an average of the received powers on NZP CSI-RS resource#0-1-1 and NZP CSI-RS resource#0-1-3 (indicated by CRI 0-1-1 and CRI 0-1-3, i.e., the reported CRIs in the other set (the first set) ) transmitted from TRP#0 received by the UE with the same specific beam (e.g.
  • the NZP CSI-RS resource#1-1-2 can be simultaneously received by the UE with any of NZP CSI-RS resource#0-1-1 and NZP CSI-RS resource#0-1-3; and (2) the received power on ZP CSI-RS resource#2-2 received by the UE with the same specific beam (e.g. b1-2) (As no power is actually transmitted from ZP CSI-RS resource#2-2 from TRP#0 or TRP#1, the received power on ZP CSI-RS resource#2-2 by the UE means the received power on the interference and noise received from other TRPs) .
  • the same specific beam e.g. b1-2
  • the L1-SINR for CRI 1-1-2 is computed by dividing the power of signal for CRI 1-1-2 by the power of interference and noise for CRI 1-1-2.
  • the UE receives NZP CSI-RS resource#0-1-1, NZP CSI-RS resource#0-1-3 and ZP CSI-RS resource#2-2 with the same beam as that for receiving NZP CSI-RS resource#1-1-2, which means that UE applies the ‘QCL-TypeD’ RS configured to the NZP CSI-RS resource for channel measurement indicated by the one CRI in the one set (the second set) (i.e., NZP CSI-RS resource#1-1-2) , as the ‘QCL-TypeD’ assumptions for the NZP CSI-RS resource (s) indicated by the reported CRI (s) in the other set (the first set) (i.e., NZP CSI-RS resource#0-1-1 and NZP CSI-RS resource#0-1-3) , and for the ZP CSI-RS resource for interference
  • a power of signal for CRI 1-1-4 is the received power on NZP CSI-RS resource#1-1-4 transmitted from TRP#1 received by the UE with a specific beam (e.g. b1-4) .
  • a power of interference and noise for CRI 1-1-4 is a total of (1) an average of the received powers on NZP CSI-RS resource#0-1-1 and NZP CSI-RS resource#0-1-3 (indicated by CRI 0-1-1 and CRI 0-1-3, i.e., the reported CRIs in the other set (the first set) ) transmitted from TRP#0 received by the UE with the same specific beam (e.g.
  • the NZP CSI-RS resource#1-1-4 can be simultaneously received by the UE with any of NZP CSI-RS resource#0-1-1 and NZP CSI-RS resource#0-1-3; and (2) the received power on ZP CSI-RS resource#2-4 received by the UE with the same specific beam (e.g. b1-4) (As no power is actually transmitted from ZP CSI-RS resource#2-4 from TRP#0 or TRP#1, the received power on ZP CSI-RS resource#2-4 by the UE means the received power on the interference and noise received from other TRPs) .
  • the same specific beam e.g. b1-4
  • the L1-SINR for CRI 1-1-4 is computed by dividing the power of signal for CRI 1-1-4 by the power of interference and noise for CRI 1-1-4.
  • the UE receives NZP CSI-RS resource#0-1-1, NZP CSI-RS resource#0-1-3 and ZP CSI-RS resource#2-4 with the same beam as that for receiving NZP CSI-RS resource#1-1-4, which means that UE applies the ‘QCL-TypeD’ RS configured to the NZP CSI-RS resource for channel measurement indicated by the one CRI in the one set (the second set) (i.e., NZP CSI-RS resource#1-1-4) , as the ‘QCL-TypeD’ assumptions for the NZP CSI-RS resource (s) indicated by the reported CRI (s) in the other set (the first set) (i.e., NZP CSI-RS resource#0-1-1 and NZP CSI-RS resource#0-1-3) , and for the ZP CSI-RS resource for interference
  • the number of CRIs in each of the two sets to be contained in the CSI report is set by the higher layer parameter ‘nrofReportedRS-Rel-17’ .
  • the higher layer parameter ‘nrofReportedRS-Rel-17’ can be set to N (N is a positive integer) . If the higher layer parameter ‘nrofReportedRS-Rel-17’ is not configured, N can be set as a default value, e.g. 1.
  • the first set of reported CRIs indicate NZP CSI-RS resources selected from the NZP CSI-RS resources in the first Resource Setting for channel measurement associated with the ‘CSI-ReportConfig’ transmitted from one TRP (e.g. TRP#0) .
  • the second set of reported CRIs indicate NZP CSI-RS resources selected from the NZP CSI-RS resources in the second Resource Setting for channel measurement associated with the ‘CSI-ReportConfig’ transmitted from the other TRP (e.g. TRP#1) .
  • a NZP CSI-RS resource for channel measurement indicated by any CRI in the first set i.e., one NZP CSI-RS resource transmitted from one TRP (e.g.
  • NZP CSI-RS resource for channel measurement indicated by any CRI in the second set i.e., one NZP CSI-RS resource transmitted from the other TRP (e.g. TRP#1)
  • TRP#0 a single spatial domain receive filter
  • multiple simultaneous spatial domain receive filters i.e., one NZP CSI-RS resource transmitted from the other TRP (e.g. TRP#1)
  • Any NZP CSI-RS resource indicated by CRI # (0-n) and any NZP CSI-RS resource indicated by CRI # (1-n) can be received simultaneously by the UE.
  • Each value CRI k (k ⁇ 0) in the first set of CRI # (0-n) indicates the configured (k+1) th entry of associated nzp-CSI-RS Resource in the corresponding nzp-CSI-RS-ResourceSet in the first Resource Setting for channel measurement associated with the ‘CSI-ReportConfig’ and if applicable (in the second type) also indicates the configured (k+1) th entry of the NZP CSI-RS Resources in the corresponding NZP CSI-RS- ResourceSet in the first Resource Setting for interference measurement associated with the ‘CSI-ReportConfig’
  • each value CRI k (k ⁇ 0) in the second set of CRI # (1-n) indicates the configured (k+1) th entry of nzp-CSI-RSResource in the corresponding nzp-CSI-RS-ResourceSet in the second Resource Setting for channel measurement associated with the ‘CSI-ReportConfig’ and if applicable (in the second type) also indicates the configured (k+1) th entry of the NZP
  • CRI#0-1 takes a value ‘CRI 0’ , which indicates the configured (0+1) th (i.e., first) entry of associated nzp-CSI-RS Resource in the first Resource Setting for channel measurement associated with the ‘CSI-ReportConfig’ (i.e., NZP CSI-RS resource#0-1-1)
  • CRI#0-2 takes a value ‘CRI 2’ , which indicates the configured (2+1) th (i.e., third) entry of associated nzp-CSI-RS Resource in the first Resource Setting for channel measurement associated with the ‘CSI-ReportConfig’ (i.e., NZP CSI-RS resource#0-1-3) .
  • CRI#1-1 takes a value ‘CRI 1” , which indicates the configured (1+1) th (i.e., second) entry of associated nzp-CSI-RS Resource in the second Resource Setting for channel measurement associated with the ‘CSI-ReportConfig’ (i.e., NZP CSI-RS resource#1-1-2)
  • CRI#1-2 takes a value ‘CRI 3’ , which indicates the configured (3+1) th (i.e., fourth) entry of associated nzp-CSI-RS Resource in the second Resource Setting for channel measurement associated with the ‘CSI-ReportConfig’ (i.e., NZP CSI-RS resource#1-1-4) .
  • CRI#0-1 takes the value ‘CRI 0’ , which also indicates the configured (0+1) th (i.e., first) entry of associated nzp-CSI-RS Resource in the first Resource Setting for interference measurement associated with the ‘CSI-ReportConfig’ (i.e., NZP CSI-RS resource#0-2-1)
  • CRI#0-2 takes the value ‘CRI 2’ , which also indicates the configured (2+1) th (i.e., third) entry of associated nzp-CSI-RS Resource in the first Resource Setting for interference measurement associated with the ‘CSI-ReportConfig’ (i.e., NZP CSI-RS resource#0-2-3) .
  • CRI#1-1 takes the value ‘CRI 1” , which also indicates the configured (1+1) th (i.e., second) entry of associated nzp-CSI-RS Resource in the second Resource Setting for interference measurement associated with the ‘CSI-ReportConfig’ (i.e., NZP CSI-RS resource#1-2-2)
  • CRI#1-2 takes the value ‘CRI 3’ , which also indicates the configured (3+1) th (i.e., fourth) entry of associated nzp-CSI-RS Resource in the second Resource Setting for interference measurement associated with the ‘CSI-ReportConfig’ (i.e., NZP CSI-RS resource#1-2-4) .
  • the value of the higher layer parameter ‘nrofReportedRS-Rel-17’ can be set to other positive integers than 4.
  • a first example of the CSI report according to the second embodiment is shown in Table 4.
  • CRI #0-1, CRI #0-2, CRI #0-3 and CRI #0-4 belong to the 1 st set; and CRI #1-1, CRI #1-2, CRI #1-3 and CRI #1-4 belong to the 2 nd set.
  • the NZP CSI-RS resource indicated by any of CRIs #0-n e.g. CRI #0-1, CRI #0-2, CRI #0-3 and CRI #0-4
  • the NZP CSI-RS resource indicated by any of CRIs #1-n e.g.
  • CRI #1-1, CRI #1-2, CRI #1-3 and CRI #1-4) can be received simultaneously by the UE.
  • NZP CSI-RS resources indicated by CRI #0-1 and CRI #1-4 can be received simultaneously, or NZP CSI-RS resources indicated by CRI #0-2 and CRI #1-3 can be received simultaneously.
  • All of the NZP CSI-RS resources indicated by the CRIs of the 1 st set are selected from the first Resource Setting for channel measurement; and all of the NZP CSI-RS resources indicated by the CRIs of the 2 nd set (e.g. CRI #1-1, CRI #1-2, CRI #1-3 and CRI #1-4) are selected from the second Resource Setting for channel measurement.
  • the SINR for each CRI is computed as described above.
  • Each CRI has its corresponding SINR.
  • SINRs can be reported by ways of differential L1-SINR based reporting.
  • SINR is quantized to a 7-bit value in the range [-23, 40] dBm with 0.5dB step size.
  • SINR #0-1 and SINR #1-1 are represented by a 7-bit value.
  • SINR #0-1 is the maximum computed value among all of the computed values based on the NZP CSI-RS resources in the first Resource Setting for channel measurement associated with the ‘CSI-ReportConfig’ .
  • SINR #0-1 is larger than any of SINR #0-2, SINR #0-3, and SINR #0-4.
  • SINR #1-1 is the maximum computed value among all of the computed values based on the NZP CSI-RS resources in the second Resource Setting for channel measurement associated with the ‘CSI-ReportConfig’ .
  • SINR #1-1 is larger than any of SINR #1-2, SINR #1-3, and SINR #1-4.
  • the other SINRs are reported in a differential manner. That is, “Differential SINR #0-2” , “Differential SINR #0-3” and “Differential SINR #0-4” and “Differential SINR #1-2” , “Differential SINR #1-3” and “Differential SINR #1-4” are contained in the CSI report.
  • a differential SINR according to the second embodiment can be represented by a 4-bit value or a 5-bit value configured by RRC signaling.
  • TCI-states containing the NZP CSI-RS resources with QCL-TypeD with the NZP-CSI-RS resource ID indicated by the first set of CRIs can be activated for PDSCH for one TRP (e.g.
  • Both the first embodiment and the second embodiment are described in the condition that the higher layer parameter ‘reportQuantity’ is set to ‘cri-SINR’ .
  • the present invention also applies to the condition when the higher layer parameter ‘reportQuantity’ is set to ‘ssb-Index-SINR’ .
  • the UE is configured with a CSI reporting setting ‘CSI-ReportConfig’ associated with two Resource Settings for channel measurement (e.g. first Resource Setting for channel measurement and second Resource Setting for channel measurement) , each of which has one or multiple SSB resource sets, where each SSB resource set has one or multiple SSB resources.
  • the SSB resources are to be received by the UE, L1-SINRs are to be computed for the SSB resources.
  • L1-SINRs are to be computed for the SSB resources.
  • SSBRIs and their corresponding L1-SINRs will be reported. That is, in each of Tables 1-4, “CRI” will be replaced by “SSBRI” .
  • two additional Resource Settings for NZP CSI-RS based interference measurement including NZP CSI-RS resources can be configured and associated with the one CSI reporting setting ‘CSI-ReportConfig’
  • one additional Resource Setting for ZP CSI-RS based interference measurement including ZP CSI-RS resources can be configured and associated with the one CSI reporting setting ‘CSI-ReportConfig’ .
  • Figure 4 is a schematic flow chart diagram illustrating an embodiment of a method 400 according to the present application.
  • the method 400 is performed by an apparatus, such as a remote unit.
  • the method 400 may be performed by a processor executing program code, for example, a microcontroller, a microprocessor, a CPU, a GPU, an auxiliary processing unit, a FPGA, or the like.
  • the method 400 may include 402 receiving a CSI reporting setting associated with two Resource Settings for channel measurement; and 404 transmitting a CSI report corresponding to the CSI reporting setting, wherein the CSI report includes two or more CRIs or SSBRIs and their corresponding computed signal to interference plus noise ratios.
  • Figure 5 is a schematic flow chart diagram illustrating an embodiment of a method 500 according to the present application.
  • the method 500 is performed by an apparatus, such as a base unit.
  • the method 200 may be performed by a processor executing program code, for example, a microcontroller, a microprocessor, a CPU, a GPU, an auxiliary processing unit, a FPGA, or the like.
  • the method 500 may include 502 transmitting a CSI reporting setting associated with two Resource Settings for channel measurement; and 504 receiving a CSI report corresponding to the CSI reporting setting, wherein the CSI report includes two or more CRIs or SSBRIs and their corresponding computed signal to interference plus noise ratios.
  • the CSI report includes N pair (s) of CRIs or SSBRIs and their corresponding computed signal to interference plus noise ratios, N is configured by RRC signaling and is a positive integer.
  • the NZP CSI-RS or SSB resources for channel measurement indicated by CRIs or SSBRIs in each pair can be received simultaneously by UE.
  • the NZP CSI-RS or SSB resource indicated by one CRI or SSBRI in each pair is selected from a first Resource Setting for channel measurement, and the NZP CSI-RS or SSB resource indicated by the other CRI or SSBRI in the each pair is selected from a second Resource Setting for channel measurement.
  • the CSI report in the scenario of single-DCI based multi-TRP DL transmission can be composed in at least three alternative manners.
  • the computed signal to interference plus noise ratio with the largest value among computed signal to interference plus noise ratios for the NZP CSI-RS or SSB resources in the first Resource Setting for channel measurement is included in the CSI report as SINR, and other computed signal to interference plus noise ratio (s) are included in the CSI report as differential SINR (s) , wherein one bit of the representation of the differential SINR indicates whether the differential SINR is positive or negative.
  • the computed signal to interference plus noise ratio with the largest value among computed signal to interference plus noise ratios for the NZP CSI-RS or SSB resources in both the first Resource Setting for channel measurement and the second Resource Setting for channel measurement is included in the CSI report as SINR
  • the CSI report includes an extra one-bit indication indicating the SINR is computed based on a NZP CSI-RS or SSB resource in the first Resource Setting for channel measurement or in the second Resource Setting for channel measurement, and other computed signal to interference plus noise ratio (s) are included in the CSI report as differential SINR (s) .
  • all of the computed signal to interference plus noise ratios for the NZP CSI-RS or SSB resources in the first Resource Setting for channel measurement are included in the CSI report as SINRs
  • all of the computed signal to interference plus noise ratios for the NZP CSI-RS or SSB resources in the second Resource Setting for channel measurement are included in the CSI report as differential SINRs
  • one bit of the representation of the differential SINR indicates whether the differential SINR is positive or negative.
  • the CSI report includes two sets of CRIs or SSBRIs and their corresponding computed signal to interference plus noise ratios, where each set includes N CRIs or SSBRIs and their corresponding computed signal to interference plus noise ratios, N is configured by RRC signaling and is a positive integer.
  • the NZP CSI-RS or SSB resource for channel measurement indicated by any CRI or SSBRI in one set and the NZP CSI-RS or SSB resource for channel measurement indicated by any CRI or SSBRI in the other set can be simultaneously received by UE.
  • the NZP CSI-RS or SSB resource indicated by each CRI or SSBRI in the one set is selected from a first Resource Setting for channel measurement
  • the NZP CSI-RS or SSB resource indicated by each CRI or SSBRI in the other set is selected from a second Resource Setting for channel measurement.
  • the CSI report in the scenario of multi-DCI based multi-TRP DL transmission can be composed as follows: the computed signal to interference plus noise ratio with the largest value among computed signal to interference plus noise ratios for the NZP CSI-RS or SSB resources in the one set and the computed signal to interference plus noise ratio with the largest value among computed signal to interference plus noise ratios for the NZP CSI-RS or SSB resources in the other set are included in the CSI report as SINRs, and other computed signal to interference plus noises are included in the CSI report as differential SINRs.
  • Figure 6 is a schematic block diagram illustrating apparatuses according to one embodiment.
  • the UE i.e., the remote unit
  • the processor implements a function, a process, and/or a method which are proposed in Figure 4.
  • the gNB i.e., base unit
  • the processors implement a function, a process, and/or a method which are proposed in Figure 5.
  • Layers of a radio interface protocol may be implemented by the processors.
  • the memories are connected with the processors to store various pieces of information for driving the processors.
  • the transceivers are connected with the processors to transmit and/or receive a radio signal. Needless to say, the transceiver may be implemented as a transmitter to transmit the radio signal and a receiver to receive the radio signal.
  • the memories may be positioned inside or outside the processors and connected with the processors by various well-known means.
  • each component or feature should be considered as an option unless otherwise expressly stated.
  • Each component or feature may be implemented not to be associated with other components or features.
  • the embodiment may be configured by associating some components and/or features. The order of the operations described in the embodiments may be changed. Some components or features of any embodiment may be included in another embodiment or replaced with the component and the feature corresponding to another embodiment. It is apparent that the claims that are not expressly cited in the claims are combined to form an embodiment or be included in a new claim.
  • the embodiments may be implemented by hardware, firmware, software, or combinations thereof.
  • the exemplary embodiment described herein may be implemented by using one or more application-specific integrated circuits (ASICs) , digital signal processors (DSPs) , digital signal processing devices (DSPDs) , programmable logic devices (PLDs) , field programmable gate arrays (FPGAs) , processors, controllers, micro-controllers, microprocessors, and the like.
  • ASICs application-specific integrated circuits
  • DSPs digital signal processors
  • DSPDs digital signal processing devices
  • PLDs programmable logic devices
  • FPGAs field programmable gate arrays

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Abstract

L'invention concerne des procédés et des appareils pour le rapport de faisceau à base de groupe avec mesure de L1-SINR pour une transmission multi-TRP DL. Le procédé comprend la transmission d'un réglage de rapport de CSI associé à deux réglages de ressource pour une mesure de canal (502), et la réception d'un rapport de CSI correspondant au réglage de rapport de CSI, le rapport de CSI comprenant au moins deux CRI ou SSBRI et leurs rapports calculés correspondant signal sur interférence plus bruit (504).
PCT/CN2020/105815 2020-07-30 2020-07-30 Rapport de faisceau à base de groupe pour la transmission multi-trp dl avec mesure de l1-sinr WO2022021216A1 (fr)

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