WO2021027920A1 - User-equipment (ue) capability signaling - Google Patents

User-equipment (ue) capability signaling Download PDF

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Publication number
WO2021027920A1
WO2021027920A1 PCT/CN2020/109174 CN2020109174W WO2021027920A1 WO 2021027920 A1 WO2021027920 A1 WO 2021027920A1 CN 2020109174 W CN2020109174 W CN 2020109174W WO 2021027920 A1 WO2021027920 A1 WO 2021027920A1
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WO
WIPO (PCT)
Prior art keywords
codebook
capability
csi
reporting
combination
Prior art date
Application number
PCT/CN2020/109174
Other languages
English (en)
French (fr)
Inventor
Chenxi HAO
Lei Xiao
Chao Wei
Yu Zhang
Peter Gaal
Wanshi Chen
Parisa CHERAGHI
Hao Xu
Original Assignee
Qualcomm Incorporated
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from PCT/CN2019/100518 external-priority patent/WO2021026798A1/en
Priority claimed from PCT/CN2019/116581 external-priority patent/WO2021087948A1/en
Application filed by Qualcomm Incorporated filed Critical Qualcomm Incorporated
Priority to CN202080072205.4A priority Critical patent/CN114556802A/zh
Publication of WO2021027920A1 publication Critical patent/WO2021027920A1/en

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    • 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
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • 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
    • H04B7/0621—Feedback content
    • H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
    • 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
    • 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
    • H04B7/0645—Variable feedback

Definitions

  • aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for capability signaling.
  • Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, broadcasts, etc. These wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc. ) .
  • available system resources e.g., bandwidth, transmit power, etc.
  • multiple-access systems examples include 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) systems, LTE Advanced (LTE-A) systems, code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, and time division synchronous code division multiple access (TD-SCDMA) systems, to name a few.
  • 3GPP 3rd Generation Partnership Project
  • LTE Long Term Evolution
  • LTE-A LTE Advanced
  • CDMA code division multiple access
  • TDMA time division multiple access
  • FDMA frequency division multiple access
  • OFDMA orthogonal frequency division multiple access
  • SC-FDMA single-carrier frequency division multiple access
  • TD-SCDMA time division synchronous code division multiple access
  • New radio e.g., 5G NR
  • 5G NR is an example of an emerging telecommunication standard.
  • NR is a set of enhancements to the LTE mobile standard promulgated by 3GPP.
  • NR is designed to better support mobile broadband Internet access by improving spectral efficiency, lowering costs, improving services, making use of new spectrum, and better integrating with other open standards using OFDMA with a cyclic prefix (CP) on the downlink (DL) and on the uplink (UL) .
  • CP cyclic prefix
  • NR supports beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation.
  • MIMO multiple-input multiple-output
  • Certain aspects of the present disclosure are directed to a method for wireless communication by a user-equipment (UE) .
  • the method generally includes determining a capability of the UE with respect to channel state information (CSI) -reporting, wherein the capability of the UE comprises at least one of a maximum number of ports per resource the UE can support for the CSI-reporting for a codebook combination to be processed simultaneously by the UE, a maximum number of resources the UE can support for the CSI-reporting across codebooks of the codebook combination, and a maximum number of total ports the UE can support for the CSI-reporting across the codebooks of the codebook combination, transmitting an indication of the capability of the UE, and receiving a CSI request or configuration message indicating a number of ports per resource, a number of resources, and a total number of ports that are in accordance with the indicated capability of the UE.
  • CSI channel state information
  • the apparatus generally includes a memory and at least one processor coupled to the memory, the memory and the at least one processor being configured to determine a capability of the UE with respect to CSI-reporting, wherein the capability of the UE comprises at least one of a maximum number of ports per resource the UE can support for the CSI-reporting for a codebook combination to be processed simultaneously by the UE, a maximum number of resources the UE can support for the CSI-reporting across codebooks of the codebook combination, and a maximum number of total ports the UE can support for the CSI-reporting across the codebooks of the codebook combination, transmit an indication of the capability of the UE, and receive a CSI request or configuration message indicating a number of ports per resource, a number of resources, and a total number of ports that are in accordance with the indicated capability of the UE.
  • the apparatus generally includes means for determining a capability of the UE with respect to CSI-reporting, wherein the capability of the UE comprises at least one of a maximum number of ports per resource the UE can support for the CSI-reporting for a codebook combination to be processed simultaneously by the UE, a maximum number of resources the UE can support for the CSI-reporting across codebooks of the codebook combination, and a maximum number of total ports the UE can support for the CSI-reporting across the codebooks of the codebook combination, means for transmitting an indication of the capability of the UE, and means for receiving a CSI request or configuration message indicating a number of ports per resource, a number of resources, and a total number of ports that are in accordance with the indicated capability of the UE.
  • Certain aspects of the present disclosure are directed to an computer readable medium having instructions stored thereon for determining a capability of a UE with respect to CSI-reporting, wherein the capability of the UE comprises at least one of a maximum number of ports per resource the UE can support for the CSI-reporting for a codebook combination to be processed simultaneously by the UE, a maximum number of resources the UE can support for the CSI-reporting across codebooks of the codebook combination, and a maximum number of total ports the UE can support for the CSI-reporting across the codebooks of the codebook combination, transmitting an indication of the capability of the UE, and receiving a CSI request or configuration message indicating a number of ports per resource, a number of resources, and a total number of ports that are in accordance with the indicated capability of the UE.
  • Certain aspects of the present disclosure are directed to a method for wireless communication by a UE.
  • the method generally includes determining a first capability of the UE with respect to CSI-reporting for a codebook or a codebook combination to be processed simultaneously by the UE, determining a second capability of the UE, the second capability being a number of PMIs supported by the UE when supporting the first capability, wherein the determination of the first capability and the second capability are dependent on each other, transmitting a message having at least an indication of the first capability and the second capability, and receiving a CSI request or configuration message indicating a number of ports per resource, a number of resources, a number of total ports, and a number of PMIs to be used for the CSI-reporting and that are in accordance with the first capability and the second capability.
  • the apparatus generally includes a memory and at least one processor coupled to the memory, the memory and the at least one processor being configured to determine a first capability of the UE with respect to CSI-reporting for a codebook or a codebook combination to be processed simultaneously by the UE, determine a second capability of the UE, the second capability being a number of PMIs supported by the UE when supporting the first capability, wherein the determination of the first capability and the second capability are dependent on each other, transmit a message having at least an indication of the first capability and the second capability, and receive a CSI request or configuration message indicating a number of ports per resource, a number of resources, a number of total ports, and a number of PMIs to be used for the CSI-reporting and that are in accordance with the first capability and the second capability.
  • the apparatus generally includes means for determining a first capability of the UE with respect to CSI-reporting for a codebook or a codebook combination to be processed simultaneously by the UE, means for determining a second capability of the UE, the second capability being a number of PMIs supported by the UE when supporting the first capability, wherein the determination of the first capability and the second capability are dependent on each other, means for transmitting a message having at least an indication of the first capability and the second capability, and means for receiving a CSI request or configuration message indicating a number of ports per resource, a number of resources, a number of total ports, and a number of PMIs to be used for the CSI-reporting and that are in accordance with the first capability and the second capability.
  • Certain aspects of the present disclosure are directed to an computer readable medium having instructions stored thereon for determining a first capability of the UE with respect to CSI-reporting for a codebook or a codebook combination to be processed simultaneously by the UE, determining a second capability of the UE, the second capability being a number of PMIs supported by the UE when supporting the first capability, wherein the determination of the first capability and the second capability are dependent on each other, transmitting a message having at least an indication of the first capability and the second capability, and receiving a CSI request or configuration message indicating a number of ports per resource, a number of resources, a number of total ports, and a number of PMIs to be used for the CSI-reporting and that are in accordance with the first capability and the second capability.
  • Certain aspects of the present disclosure are directed to a method for wireless communication by a UE.
  • the method generally includes determining a capability of the UE with respect to CSI-reporting for a codebook or a codebook combination to be processed simultaneously by the UE, determining a maximum number of multiple-input and multiple-output (MIMO) layers supported by the UE for each of one or more codebook types associated with the codebook or the codebook combination, transmitting an indication of the capability of the UE and the maximum number of MIMO layers, and receiving a CSI request or configuration in accordance with the reported capability.
  • MIMO multiple-input and multiple-output
  • the apparatus generally includes a memory and at least one processor coupled to the memory, the memory and the at least one processor being configured to determine a capability of the UE with respect to CSI-reporting for a codebook or a codebook combination to be processed simultaneously by the UE, determine a maximum number of MIMO layers supported by the UE for each of one or more codebook types associated with the codebook or the codebook combination, transmit an indication of the capability of the UE and the maximum number of MIMO layers, and receive a CSI request or configuration in accordance with the reported capability.
  • the apparatus generally includes means for determining a capability of the UE with respect to CSI-reporting for a codebook or a codebook combination to be processed simultaneously by the UE, means for determining a maximum number of MIMO layers supported by the UE for each of one or more codebook types associated with the codebook or the codebook combination, means for transmitting an indication of the capability of the UE and the maximum number of MIMO layers, and receiving a CSI request or configuration in accordance with the reported capability.
  • Certain aspects of the present disclosure are directed to an computer readable medium having instructions stored thereon for determining a capability of the UE with respect to CSI-reporting for a codebook or a codebook combination to be processed simultaneously by the UE, determining a maximum number of MIMO layers supported by the UE for each of one or more codebook types associated with the codebook or the codebook combination, transmitting an indication of the capability of the UE and the maximum number of MIMO layers, and receiving a CSI request or configuration in accordance with the reported capability.
  • the apparatus generally includes a memory and at least one processor coupled to the memory, the memory and the at least one processor being configured to receive an indication of a capability of the UE with respect to CSI-reporting, wherein the capability of the UE comprises at least one of a maximum number of ports per resource the UE can support for the CSI-reporting for a codebook combination to be processed simultaneously by the UE, a maximum number of resources the UE can support for the CSI-reporting across codebooks of the codebook combination, and a maximum number of total ports the UE can support for the CSI-reporting across the codebooks of the codebook combination, generate a CSI request or configuration message indicating a number of ports per resource, a number of resources, and a total number of ports that are in accordance with the indicated capability of the UE, and transmit the CSI request or the configuration message.
  • the apparatus generally includes means for receiving an indication of a capability of the UE with respect to CSI-reporting, wherein the capability of the UE comprises at least one of a maximum number of ports per resource the UE can support for the CSI-reporting for a codebook combination to be processed simultaneously by the UE, a maximum number of resources the UE can support for the CSI-reporting across codebooks of the codebook combination, and a maximum number of total ports the UE can support for the CSI-reporting across the codebooks of the codebook combination, means for generating a CSI request or configuration message indicating a number of ports per resource, a number of resources, and a total number of ports that are in accordance with the indicated capability of the UE, and means for transmitting the CSI request or the configuration message.
  • Certain aspects of the present disclosure are directed to an computer readable medium having instructions stored thereon for receiving an indication of a capability of the UE with respect to CSI-reporting, wherein the capability of the UE comprises at least one of a maximum number of ports per resource the UE can support for the CSI-reporting for a codebook combination to be processed simultaneously by the UE, a maximum number of resources the UE can support for the CSI-reporting across codebooks of the codebook combination, and a maximum number of total ports the UE can support for the CSI-reporting across the codebooks of the codebook combination, generating a CSI request or configuration message indicating a number of ports per resource, a number of resources, and a total number of ports that are in accordance with the indicated capability of the UE, and transmitting the CSI request or the configuration message.
  • Certain aspects of the present disclosure are directed to a method for wireless communication.
  • the method generally includes receiving a message having an indication of a first capability of the UE with respect to CSI-reporting for a codebook or a codebook combination to be processed simultaneously by the UE and a second capability of the UE, the second capability being a number of PMIs supported by the UE when supporting the first capability, generating a CSI request or configuration message indicating a number of ports per resource, a number of resources, a number of total ports, and a number of PMIs to be used for the CSI-reporting and that are in accordance with the first capability and the second capability, and transmitting the CSI request or configuration message.
  • the apparatus generally includes a memory and at least one processor coupled to the memory, the memory and the at least one processor being configured to receive a message having an indication of a first capability of the UE with respect to CSI-reporting for a codebook or a codebook combination to be processed simultaneously by the UE and a second capability of the UE, the second capability being a number of PMIs supported by the UE when supporting the first capability, generate a CSI request or configuration message indicating a number of ports per resource, a number of resources, a number of total ports, and a number of PMIs to be used for the CSI-reporting and that are in accordance with the first capability and the second capability, and transmit the CSI request or configuration message.
  • the apparatus generally includes means for receiving a message having an indication of a first capability of the UE with respect to CSI-reporting for a codebook or a codebook combination to be processed simultaneously by the UE and a second capability of the UE, the second capability being a number of PMIs supported by the UE when supporting the first capability, means for generating a CSI request or configuration message indicating a number of ports per resource, a number of resources, a number of total ports, and a number of PMIs to be used for the CSI-reporting and that are in accordance with the first capability and the second capability, means for and transmitting the CSI request or configuration message.
  • Certain aspects of the present disclosure are directed to an computer readable medium having instructions stored thereon for receiving a message having an indication of a first capability of the UE with respect to CSI-reporting for a codebook or a codebook combination to be processed simultaneously by the UE and a second capability of the UE, the second capability being a number of PMIs supported by the UE when supporting the first capability, generating a CSI request or configuration message indicating a number of ports per resource, a number of resources, a number of total ports, and a number of PMIs to be used for the CSI-reporting and that are in accordance with the first capability and the second capability, and transmitting the CSI request or configuration message.
  • Certain aspects of the present disclosure are directed to a method for wireless communication.
  • the method generally includes receiving an indication of a capability of the UE with respect to CSI-reporting for a codebook or a codebook combination to be processed simultaneously by the UE and a maximum number of MIMO layers supported by the UE for each of one or more codebook types associated with the codebook or the codebook combination, generating a CSI request or configuration message in accordance with the reported capability, and transmitting the CSI request or configuration message.
  • the apparatus generally includes a memory and at least one processor coupled to the memory, the memory and the at least one processor being configured to receive an indication of a capability of the UE with respect to CSI-reporting for a codebook or a codebook combination to be processed simultaneously by the UE and a maximum number of MIMO layers supported by the UE for each of one or more codebook types associated with the codebook or the codebook combination, generate a CSI request or configuration message in accordance with the reported capability, and transmit the CSI request or configuration message.
  • the apparatus generally includes means for receiving an indication of a capability of the UE with respect to CSI-reporting for a codebook or a codebook combination to be processed simultaneously by the UE and a maximum number of MIMO layers supported by the UE for each of one or more codebook types associated with the codebook or the codebook combination, means for generating a CSI request or configuration message in accordance with the reported capability, and means for transmitting the CSI request or configuration message.
  • Certain aspects of the present disclosure are directed to an computer readable medium having instructions stored thereon for receiving an indication of a capability of the UE with respect to CSI-reporting for a codebook or a codebook combination to be processed simultaneously by the UE and a maximum number of MIMO layers supported by the UE for each of one or more codebook types associated with the codebook or the codebook combination, generating a CSI request or configuration message in accordance with the reported capability, and transmitting the CSI request or configuration message.
  • Certain aspects of the present disclosure are directed to a method for wireless communication.
  • the method generally includes receiving an indication of a capability of a UE with respect to CSI-reporting, the capability of the UE being specific to a codebook combination to be processed simultaneously by the UE, determining one or more parameters to be configured for the CSI-reporting based on the capability of the UE, and configuring the UE to perform the CSI-reporting using the determined one or more parameters.
  • the apparatus generally includes a memory and at least one processor coupled to the memory, the memory and the at least one processor being configured to receive an indication of a capability of a UE with respect to CSI-reporting, the capability of the UE being specific to a codebook combination to be processed simultaneously by the UE, determine one or more parameters to be configured for the CSI-reporting based on the capability of the UE, and configure the UE to perform the CSI-reporting using the determined one or more parameters.
  • the apparatus generally includes means for receiving an indication of a capability of a UE with respect to CSI-reporting, the capability of the UE being specific to a codebook combination to be processed simultaneously by the UE, means for determining one or more parameters to be configured for the CSI-reporting based on the capability of the UE, and means for configuring the UE to perform the CSI-reporting using the determined one or more parameters.
  • Certain aspects of the present disclosure are directed to an computer readable medium having instructions stored thereon for receiving an indication of a capability of a UE with respect to CSI-reporting, the capability of the UE being specific to a codebook combination to be processed simultaneously by the UE, determining one or more parameters to be configured for the CSI-reporting based on the capability of the UE, and configuring the UE to perform the CSI-reporting using the determined one or more parameters.
  • Certain aspects of the present disclosure are directed to a method for wireless communication.
  • the method generally includes determining a capability of the UE with respect to CSI-reporting, the capability of the UE being specific to a codebook combination to be processed simultaneously by the UE, transmitting an indication of the capability of the UE, and receiving a configuration of one or more parameters for the CSI-reporting in accordance with the indication of the capability.
  • the apparatus generally includes a memory and at least one processor coupled to the memory, the memory and the at least one processor being configured to determine a capability of the UE with respect to CSI-reporting, the capability of the UE being specific to a codebook combination to be processed simultaneously by the UE, transmit an indication of the capability of the UE, and receive a configuration of one or more parameters for the CSI-reporting in accordance with the indication of the capability.
  • the apparatus generally includes means for determining a capability of the UE with respect to CSI-reporting, the capability of the UE being specific to a codebook combination to be processed simultaneously by the UE, means for transmitting an indication of the capability of the UE, and means for receiving a configuration of one or more parameters for the CSI-reporting in accordance with the indication of the capability.
  • Certain aspects of the present disclosure are directed to an computer readable medium having instructions stored thereon for determining a capability of the UE with respect to CSI-reporting, the capability of the UE being specific to a codebook combination to be processed simultaneously by the UE, transmitting an indication of the capability of the UE, and receiving a configuration of one or more parameters for the CSI-reporting in accordance with the indication of the capability.
  • Certain aspects of the present disclosure are directed to a method for wireless communication.
  • the method generally includes receiving an indication of a capability of a UE with respect to CSI-reporting, the capability of the UE being received for each of at least two codebooks to be processed by the UE, determining one or more parameters to be configured for the CSI-reporting based on the capability of the UE, and configuring the UE to perform the CSI-reporting using the determined one or more parameters, wherein the one or more parameters are determined by assuming that the capability of the UE with respect to a first codebook of the at least two codebooks is the same as a second codebook of the at least two codebooks, if the first codebook and the second codebook are to be configured for simultaneous processing by the UE, or configuring the UE to perform the CSI-reporting comprises avoiding configuring the UE to process the first codebook simultaneously with the second codebook.
  • the apparatus generally includes a memory and at least one processor coupled to the memory, the memory and the at least one processor being configured to receive an indication of a capability of a UE with respect to channel state information CSI-reporting, the capability of the UE being received for each of at least two codebooks to be processed by the UE, determine one or more parameters to be configured for the CSI-reporting based on the capability of the UE, and configure the UE to perform the CSI-reporting using the determined one or more parameters, wherein the one or more parameters are determined by assuming that the capability of the UE with respect to a first codebook of the at least two codebooks is the same as a second codebook of the at least two codebooks, if the first codebook and the second codebook are to be configured for simultaneous processing by the UE, or configuring the UE to perform the CSI-reporting comprises avoiding configuring the UE to process the first codebook simultaneously with the second codebook.
  • the apparatus generally includes means for receiving an indication of a capability of a UE with respect to CSI-reporting, the capability of the UE being received for each of at least two codebooks to be processed by the UE, means for determining one or more parameters to be configured for the CSI-reporting based on the capability of the UE, and means for configuring the UE to perform the CSI-reporting using the determined one or more parameters, wherein the one or more parameters are determined by assuming that the capability of the UE with respect to a first codebook of the at least two codebooks is the same as a second codebook of the at least two codebooks, if the first codebook and the second codebook are to be configured for simultaneous processing by the UE, or configuring the UE to perform the CSI-reporting comprises avoiding configuring the UE to process the first codebook simultaneously with the second codebook.
  • Certain aspects of the present disclosure are directed to an computer readable medium having instructions stored thereon for receiving an indication of a capability of a UE with respect to CSI-reporting, the capability of the UE being received for each of at least two codebooks to be processed by the UE, determining one or more parameters to be configured for the CSI-reporting based on the capability of the UE, and configuring the UE to perform the CSI-reporting using the determined one or more parameters, wherein the one or more parameters are determined by assuming that the capability of the UE with respect to a first codebook of the at least two codebooks is the same as a second codebook of the at least two codebooks, if the first codebook and the second codebook are to be configured for simultaneous processing by the UE, or configuring the UE to perform the CSI-reporting comprises avoiding configuring the UE to process the first codebook simultaneously with the second codebook.
  • Certain aspects of the present disclosure are directed to a method for wireless communication.
  • the method generally includes determining a capability of the UE with respect to CSI-reporting, the capability of the UE being received for each of at least two codebooks to be processed by the UE, transmitting an indication of the capability of the UE to a network entity, and receiving a configuration of one or more parameters for the CSI-reporting in accordance with the capability of the UE, wherein the capability is determined by expecting that the one or more parameters are to be configured by the network entity assuming that the capability of the UE with respect to a first codebook of the at least two codebooks is the same as a second codebook of the at least two codebooks, if the first codebook and the second codebook are to be configured for simultaneous processing by the UE, or the network entity is to avoid configuring the UE to process the first codebook simultaneously with the second codebook.
  • the apparatus generally includes a memory and at least one processor coupled to the memory, the memory and the at least one processor being configured to determine a capability of the UE with respect to CSI-reporting, the capability of the UE being received for each of at least two codebooks to be processed by the UE, transmit an indication of the capability of the UE to a network entity, and receive a configuration of one or more parameters for the CSI-reporting in accordance with the capability of the UE, wherein the capability is determined by expecting that the one or more parameters are to be configured by the network entity assuming that the capability of the UE with respect to a first codebook of the at least two codebooks is the same as a second codebook of the at least two codebooks, if the first codebook and the second codebook are to be configured for simultaneous processing by the UE, or the network entity is to avoid configuring the UE to process the first codebook simultaneously with the second codebook.
  • the apparatus generally includes means for determining a capability of the UE with respect to CSI-reporting, the capability of the UE being received for each of at least two codebooks to be processed by the UE, means for transmitting an indication of the capability of the UE to a network entity, and means for receiving a configuration of one or more parameters for the CSI-reporting in accordance with the capability of the UE, wherein the capability is determined by expecting that the one or more parameters are to be configured by the network entity assuming that the capability of the UE with respect to a first codebook of the at least two codebooks is the same as a second codebook of the at least two codebooks, if the first codebook and the second codebook are to be configured for simultaneous processing by the UE, or the network entity is to avoid configuring the UE to process the first codebook simultaneously with the second codebook.
  • Certain aspects of the present disclosure are directed to an computer readable medium having instructions stored thereon for determining a capability of the UE with respect to CSI-reporting, the capability of the UE being received for each of at least two codebooks to be processed by the UE, transmitting an indication of the capability of the UE to a network entity, and receiving a configuration of one or more parameters for the CSI-reporting in accordance with the capability of the UE, wherein the capability is determined by expecting that the one or more parameters are to be configured by the network entity assuming that the capability of the UE with respect to a first codebook of the at least two codebooks is the same as a second codebook of the at least two codebooks, if the first codebook and the second codebook are to be configured for simultaneous processing by the UE, or the network entity is to avoid configuring the UE to process the first codebook simultaneously with the second codebook.
  • Certain aspects of the present disclosure are directed to a method for wireless communication.
  • the method generally includes receiving an indication of a capability of a UE with respect to CSI-reporting, determining one or more parameters associated with each of one or more CSI reports based on the capability of the UE, wherein the one or more parameters are determined based on a combination of codebooks or CSIs to be processed simultaneously by the UE, generating a CSI request for the one or more CSI reports, and transmitting the CSI request to the UE to perform the CSI-reporting using the determined one or more parameters.
  • the apparatus generally includes a memory and at least one processor coupled to the memory, the memory and the at least one processor being configured to receive an indication of a capability of a UE with respect to CSI-reporting, determine one or more parameters associated with each of one or more CSI reports based on the capability of the UE, wherein the one or more parameters are determined based on a combination of codebooks or CSIs to be processed simultaneously by the UE, generating a CSI request for the one or more CSI reports, and transmit the CSI request to the UE to perform the CSI-reporting using the determined one or more parameters.
  • the apparatus generally includes means for receiving an indication of a capability of a UE with respect to CSI-reporting, means for determining one or more parameters associated with each of one or more CSI reports based on the capability of the UE, wherein the one or more parameters are determined based on a combination of codebooks or CSIs to be processed simultaneously by the UE, means for generating a CSI request for the one or more CSI reports, and means for transmitting the CSI request to the UE to perform the CSI-reporting using the determined one or more parameters.
  • Certain aspects of the present disclosure are directed to an computer readable medium having instructions stored thereon for receiving an indication of a capability of a UE with respect to CSI-reporting, determining one or more parameters associated with each of one or more CSI reports based on the capability of the UE, wherein the one or more parameters are determined based on a combination of codebooks or CSIs to be processed simultaneously by the UE, generating a CSI request for the one or more CSI reports, and transmitting the CSI request to the UE to perform the CSI-reporting using the determined one or more parameters.
  • Certain aspects of the present disclosure are directed to a method for wireless communication.
  • the method generally includes determining a capability of the UE with respect to CSI-reporting, transmitting an indication of the capability of the UE, receiving a CSI request for one or more CSI reports, the CSI request comprising a configuration of one or more parameters associated with each of the one or more CSI reports, and determining the one or more CSI reports by determining the one or more parameters are in accordance with the capability reported by the UE, wherein determining the one or more parameters is based on a combination of codebooks or CSIs to be processed simultaneously by the UE.
  • the apparatus generally includes a memory and at least one processor coupled to the memory, the memory and the at least one processor being configured to determine a capability of the UE with respect to CSI-reporting, transmit an indication of the capability of the UE, receiving a CSI request for one or more CSI reports, the CSI request comprising a configuration of one or more parameters associated with each of the one or more CSI reports, and determine the one or more CSI reports by determining the one or more parameters are in accordance with the capability reported by the UE, wherein determining the one or more parameters is based on a combination of codebooks or CSIs to be processed simultaneously by the UE.
  • the apparatus generally includes means for determining a capability of the UE with respect to CSI-reporting, means for transmitting an indication of the capability of the UE, means for receiving a CSI request for one or more CSI reports, the CSI request comprising a configuration of one or more parameters associated with each of the one or more CSI reports, and means for determining the one or more CSI reports by determining the one or more parameters are in accordance with the capability reported by the UE, wherein determining the one or more parameters is based on a combination of codebooks or CSIs to be processed simultaneously by the UE.
  • Certain aspects of the present disclosure are directed to an computer readable medium having instructions stored thereon for determining a capability of the UE with respect to CSI-reporting, transmitting an indication of the capability of the UE, receiving a CSI request for one or more CSI reports, the CSI request comprising a configuration of one or more parameters associated with each of the one or more CSI reports, and determining the one or more CSI reports by determining the one or more parameters are in accordance with the capability reported by the UE, wherein determining the one or more parameters is based on a combination of codebooks or CSIs to be processed simultaneously by the UE.
  • the one or more aspects comprise the features hereinafter fully described and particularly pointed out in the claims.
  • the following description and the appended drawings set forth in detail certain illustrative features of the one or more aspects. These features are indicative, however, of but a few of the various ways in which the principles of various aspects may be employed.
  • FIG. 1 is a block diagram conceptually illustrating an example telecommunications system, in accordance with certain aspects of the present disclosure.
  • FIG. 2 is a block diagram conceptually illustrating a design of an example a base station (BS) and user equipment (UE) , in accordance with certain aspects of the present disclosure.
  • BS base station
  • UE user equipment
  • FIG. 3 illustrates a number of processing cycles associated with various codebooks.
  • FIG. 4 is a table illustrating a number of resources reported by a UE for a combination of codebooks to be processed simultaneously by a UE.
  • FIG. 5 is a flow diagram illustrating example operations for wireless communication by a UE, in accordance with certain aspects of the present disclosure.
  • FIG. 6 is a flow diagram illustrating example operations for wireless communication by a BS, in accordance with certain aspects of the present disclosure.
  • FIG. 7 illustrates PMI subband size, in accordance with certain aspects of the present disclosure.
  • FIG. 8 is a flow diagram illustrating example operations for wireless communication by a UE, in accordance with certain aspects of the present disclosure.
  • FIG. 9 is a flow diagram illustrating example operations for wireless communication by a BS, in accordance with certain aspects of the present disclosure.
  • FIG. 10 is a flow diagram illustrating example operations for wireless communication by a UE, in accordance with certain aspects of the present disclosure.
  • FIG. 11 is a flow diagram illustrating example operations for wireless communication by a BS, in accordance with certain aspects of the present disclosure.
  • FIG. 12 illustrates a communications device that may include various components configured to perform operations for the techniques disclosed herein.
  • FIG. 13 is a flow diagram illustrating example operations for wireless communication by a BS, in accordance with certain aspects of the present disclosure.
  • FIG. 14 is a flow diagram illustrating example operations for wireless communication by a UE, in accordance with certain aspects of the present disclosure.
  • FIGs. 15A, 15B, 15C, and 15D illustrate UE capability information for various codebook combinations, in accordance with certain aspects of the present disclosure.
  • FIG. 16 illustrates UE capability parameters for various codebooks and a weight associated with each codebook, in accordance with certain aspects of the present disclosure.
  • FIGs. 17A and 17B illustrate example processing weights for various codebook types and example configurations of resources to be used for channel state information (CSI) -reporting, in accordance with certain aspects of the present disclosure.
  • CSI channel state information
  • FIG. 18 is a flow diagram illustrating example operations for wireless communication by a BS, in accordance with certain aspects of the present disclosure.
  • FIG. 19 is a flow diagram illustrating example operations for wireless communication by a UE, in accordance with certain aspects of the present disclosure.
  • FIG. 20 illustrates a communications device that may include various components configured to perform operations for the techniques disclosed herein in accordance with aspects of the present disclosure.
  • FIG. 21 illustrates a communications device that may include various components configured to perform operations for the techniques disclosed herein in accordance with aspects of the present disclosure.
  • FIGs. 22A, 22B, and 22C illustrate example processing weights for various codebook types, maximum weighted sum of resources and ports, and example configurations of resources to be used for CSI-reporting, in accordance with certain aspects of the present disclosure.
  • FIG. 23 is a flow diagram illustrating example operations for wireless communication by a BS, in accordance with certain aspects of the present disclosure.
  • FIG. 24 is a flow diagram illustrating example operations for wireless communication by a UE, in accordance with certain aspects of the present disclosure.
  • FIGs. 25A-25F are tables illustrating example reported capabilities and triggered CSI-reports, in accordance with certain aspects of the present disclosure.
  • FIGs. 26A-26B are tables illustrating example reported capabilities and triggered CSI-report, in accordance with certain aspects of the present disclosure.
  • FIGs. 27A-27D are tables illustrating example reported capabilities and corresponding triggered reports, in accordance with certain aspects of the present disclosure.
  • aspects of the present disclosure provide apparatus, methods, processing systems, and computer readable mediums for user-equipment (UE) capability signaling for codebook combination.
  • UE user-equipment
  • any number of wireless networks may be deployed in a given geographic area.
  • Each wireless network may support a particular radio access technology (RAT) and may operate on one or more frequencies.
  • a RAT may also be referred to as a radio technology, an air interface, etc.
  • a frequency may also be referred to as a carrier, a subcarrier, a frequency channel, a tone, a subband, etc.
  • Each frequency may support a single RAT in a given geographic area in order to avoid interference between wireless networks of different RATs.
  • a 5G NR RAT network may be deployed.
  • FIG. 1 illustrates an example wireless communication network 100 in which aspects of the present disclosure may be performed.
  • the wireless communication network 100 may be an NR system (e.g., a 5G NR network) .
  • the wireless communication network 100 may include a number of base stations (BSs) 110a-z (each also individually referred to herein as BS 110 or collectively as BSs 110) and other network entities.
  • a BS 110 may provide communication coverage for a particular geographic area, sometimes referred to as a “cell” , which may be stationary or may move according to the location of a mobile BS 110.
  • the BSs 110 may be interconnected to one another and/or to one or more other BSs or network nodes (not shown) in wireless communication network 100 through various types of backhaul interfaces (e.g., a direct physical connection, a wireless connection, a virtual network, or the like) using any suitable transport network.
  • backhaul interfaces e.g., a direct physical connection, a wireless connection, a virtual network, or the like
  • the BSs 110a, 110b and 110c may be macro BSs for the macro cells 102a, 102b and 102c, respectively.
  • the BS 110x may be a pico BS for a pico cell 102x.
  • the BSs 110y and 110z may be femto BSs for the femto cells 102y and 102z, respectively.
  • a BS may support one or multiple cells.
  • the BSs 110 communicate with user equipment (UEs) 120a-y (each also individually referred to herein as UE 120 or collectively as UEs 120) in the wireless communication network 100.
  • the UEs 120 (e.g., 120x, 120y, etc. ) may be dispersed throughout the wireless communication network 100, and each UE 120 may be stationary or mobile.
  • the BSs 110 and UEs 120 may be configured for channel state information (CSI) reporting and configuration.
  • the BS 110a includes a CSI manager configured to configure parameters for CSI reporting, in accordance with aspects of the present disclosure.
  • the UE 120a includes a CSI manager configured to indicate UE capabilities for CSI-reporting, in accordance with aspects of the present disclosure.
  • Wireless communication network 100 may also include relay stations (e.g., relay station 110r) , also referred to as relays or the like, that receive a transmission of data and/or other information from an upstream station (e.g., a BS 110a or a UE 120r) and sends a transmission of the data and/or other information to a downstream station (e.g., a UE 120 or a BS 110) , or that relays transmissions between UEs 120, to facilitate communication between devices.
  • relay stations e.g., relay station 110r
  • relays or the like that receive a transmission of data and/or other information from an upstream station (e.g., a BS 110a or a UE 120r) and sends a transmission of the data and/or other information to a downstream station (e.g., a UE 120 or a BS 110) , or that relays transmissions between UEs 120, to facilitate communication between devices.
  • a network controller 130 may couple to a set of BSs 110 and provide coordination and control for these BSs 110.
  • the network controller 130 may communicate with the BSs 110 via a backhaul.
  • the BSs 110 may also communicate with one another (e.g., directly or indirectly) via wireless or wireline backhaul.
  • FIG. 2 illustrates example components of BS 110a and UE 120a (e.g., in the wireless communication network 100 of FIG. 1) , which may be used to implement aspects of the present disclosure.
  • a transmit processor 220 may receive data from a data source 212 and control information from a controller/processor 240.
  • the control information may be for the physical broadcast channel (PBCH) , physical control format indicator channel (PCFICH) , physical hybrid ARQ indicator channel (PHICH) , physical downlink control channel (PDCCH) , group common PDCCH (GC PDCCH) , etc.
  • the data may be for the physical downlink shared channel (PDSCH) , etc.
  • the processor 220 may process (e.g., encode and symbol map) the data and control information to obtain data symbols and control symbols, respectively.
  • the transmit processor 220 may also generate reference symbols, such as for the primary synchronization signal (PSS) , secondary synchronization signal (SSS) , and cell-specific reference signal (CRS) .
  • a transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on the data symbols, the control symbols, and/or the reference symbols, if applicable, and may provide output symbol streams to the modulators (MODs) 232a-232t. Each modulator 232 may process a respective output symbol stream (e.g., for OFDM, etc. ) to obtain an output sample stream.
  • Each modulator may further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal.
  • Downlink signals from modulators 232a-232t may be transmitted via the antennas 234a-234t, respectively.
  • the antennas 252a-252r may receive the downlink signals from the BS 110a and may provide received signals to the demodulators (DEMODs) in transceivers 254a-254r, respectively.
  • Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) a respective received signal to obtain input samples.
  • Each demodulator may further process the input samples (e.g., for OFDM, etc. ) to obtain received symbols.
  • a MIMO detector 256 may obtain received symbols from all the demodulators 254a-254r, perform MIMO detection on the received symbols if applicable, and provide detected symbols.
  • a receive processor 258 may process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data for the UE 120a to a data sink 260, and provide decoded control information to a controller/processor 280.
  • a transmit processor 264 may receive and process data (e.g., for the physical uplink shared channel (PUSCH) ) from a data source 262 and control information (e.g., for the physical uplink control channel (PUCCH) from the controller/processor 280.
  • the transmit processor 264 may also generate reference symbols for a reference signal (e.g., for the sounding reference signal (SRS) ) .
  • the symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266 if applicable, further processed by the demodulators in transceivers 254a-254r (e.g., for SC-FDM, etc. ) , and transmitted to the BS 110a.
  • the uplink signals from the UE 120a may be received by the antennas 234, processed by the modulators 232, detected by a MIMO detector 236 if applicable, and further processed by a receive processor 238 to obtain decoded data and control information sent by the UE 120a.
  • the receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to the controller/processor 240.
  • the memories 242 and 282 may store data and program codes for BS 110a and UE 120a, respectively.
  • a scheduler 244 may schedule UEs for data transmission on the downlink and/or uplink.
  • the controller/processor 280 and/or other processors and modules at the UE 120a may perform or direct the execution of processes for the techniques described herein.
  • the controller/processor 240 of the BS 110a has an CSI manager that may be configured for configuring parameter for CSI-reporting, according to aspects described herein.
  • the controller/processor 280 of the UE 120a has an CSI manager 241 that may be configured for indicating UE capabilities for CSI-reporting, according to aspects described herein.
  • the Controller/Processor other components of the UE 120a and BS 110a may be used performing the operations described herein.
  • CSI may refer to known channel properties of a communication link.
  • the CSI may represent the combined effects of, for example, scattering, fading, and power decay with distance between a transmitter and receiver.
  • Channel estimation using the pilots such as CSI reference signals (CSI-RS) , may be performed to determine these effects on the channel.
  • CSI may be used to adapt transmissions based on the current channel conditions, which is useful for achieving reliable communication, in particular, with high data rates in multi-antenna systems.
  • CSI is typically estimated at the receiver, quantized, and fed back to the transmitter.
  • a network may configure UEs for CSI reporting.
  • the BS 110 may configure the UE 120 with a CSI report configuration (sometimes referred to as a ‘CSI report setting’ ) or with multiple CSI report configurations.
  • the CSI report configuration may be provided to the UE via higher layer signaling, such as radio resource control (RRC) signaling.
  • RRC radio resource control
  • the CSI report configurations may be associated with CSI-RS resources used for channel measurement (CM) , interference measurement (IM) , or both.
  • CM channel measurement
  • IM interference measurement
  • the CSI report configuration configures CSI-RS resources (sometimes referred to as the ‘CSI-RS resource setting’ ) for measurement.
  • the CSI-RS resources provide the UE with the configuration of CSI-RS ports, or CSI-RS port groups, mapped to time and frequency resources (e.g., resource elements (REs) ) .
  • CSI-RS resources can be zero power (ZP) or non-zero power (NZP) resources. At least one NZP CSI-RS resource may be configured for CM.
  • the CSI report configuration may also configure the CSI parameters (sometimes referred to as quantities) to be reported using codebooks.
  • codebooks Three example types of codebooks include Type I single panel, Type I multi-panel, and Type II single panel. Regardless of which codebook is used, the CSI report may include a channel quality indicator (CQI) , a precoding matrix indicator (PMI) , a CSI-RS resource indicator (CRI) , and/or a rank indicator (RI) .
  • CQI channel quality indicator
  • PMI precoding matrix indicator
  • CRI rank indicator
  • the structure of the PMI may vary based on the codebook.
  • the PMI may include a W1 matrix (e.g., subset of beams) and a W2 matrix (e.g., phase for cross polarization combination and beam selection) .
  • the PMI further comprises a phase for cross panel combination.
  • the PMI is a linear combination of beams; it has a subset of orthogonal beams to be used for linear combination and has per layer, per polarization, amplitude and phase for each beam.
  • WB wideband
  • SB subband
  • the CSI report configuration may configure the UE for aperiodic, periodic, or semi-persistent CSI reporting.
  • the CSI report configuration may configure the time and frequency resources used by the UE to report CSI.
  • the UE may be configured with periodic CSI-RS resources.
  • Periodic CSI and semi-persistent CSI report on physical uplink control channel (PUCCH) may be triggered via RRC or a medium access control (MAC) control element (CE) .
  • PUCCH physical uplink control channel
  • CE medium access control element
  • the BS may signal the UE a CSI report trigger indicating for the UE to send a CSI report for one or more CSI-RS resources, or configuring the CSI-RS report trigger state.
  • the CSI report trigger for aperiodic CSI and semi-persistent CSI on PUSCH may be provided via downlink control information (DCI) .
  • DCI downlink control information
  • the CSI-RS trigger may be signaling indicating to the UE that CSI-RS will be transmitted for the CSI-RS resource.
  • the UE may report the CSI feedback based on the CSI report configuration and the CSI report trigger. For example, the UE may measure the channel associated with CSI for the triggered CSI-RS resources. Based on the measurements, the UE may select one or more preferred CSI-RS resources or select a CSI-RS resource comprising one or more port groups. The UE may report the CSI feedback for each of the CSI-RS resources and/or port groups.
  • a UE 120 may indicate its capability for channel state information (CSI) reporting, enabling the BS 110 (e.g., gNB) to configure resources for the CSI report.
  • CSI channel state information
  • the UE may signal parameters indicating a maximum number of supported transmit ports per resource (e.g., maxNumTxPortsPerResource parameter) , a maximum number of supported resources per band (e.g., maxNumberResourcesPerBand parameter) , and a total number of transmit ports per band (e.g., totalNumberTxPortsPerBand parameter) .
  • ports may refer to active CSI-RS ports.
  • the UE may signal the maximum number of simultaneous CSI reports (regardless of codebook type) supported across all component carriers (CCs) , signal the maximum number of simultaneous non-zero power (NZP) channel CSI-reference signal (CSI-RS) and CSI-interference measurement (IM) resources (regardless of codebook type) across all CCs, and signal the maximum number of simultaneous CSI-RS ports (regardless of codebook type) across all CCs.
  • NZP simultaneous non-zero power
  • CSI-RS channel CSI-reference signal
  • IM CSI-interference measurement
  • the gNB may trigger 1 type I report with 8 resources, or trigger 3 type II reports each with 2 resources.
  • the processing complexity associated with different codebook types may be unequal.
  • the processing complexity of a type I single panel may be about the same as type I multi-panel, but less than the release-15 type II port selection codebook.
  • the processing complexity of the release-15 type II port selection codebook may be about the same as release-15 type II but less than release-16 type II.
  • the unequal processing complexity of codebook types may result in underreported capability by the UE since the UE may plan for the worst case scenario with respect to the CSI-reporting configuration by the BS 110.
  • FIG. 3 illustrates a number of processing cycles associated with various codebooks. As illustrated, a single processing cycle may be required by a single NZP CSI-RS resource associated with a type I single panel codebook, 2 processing cycles may be required by a single NZP CSI-RS resource associated with release-15 type II codebook, and three processing cycles may be required by a single NZP CSI-RS resource associated with a release-16 type II code book.
  • the UE may target supporting any combination (a, b) such that a is less than A and b is less than B.
  • the UE may have the capability to process eight resources in total.
  • the actual maximum resources that UE is capable of handling for type I may be 8 resources, and the maximum resources for release-15 type II the UE is capable of handling may be 7.
  • the UE may instead report the maximum resources for release-15 type II as being 6.
  • the BS 110 may only configure 6 resources for release-15 type II codebook and 2 resources for the type I codebook, resulting in the maximum number of 8 resources, and 14 cycles which does not exceed to the total number of available cycles at the UE.
  • the UE can process 8 resources in total, and the maximum number of resources for type I, release-15 type II, and release-16 type II the UE is capable of handling is 8, 7, 4, respectively.
  • the UE may report a maximum number of resources for type I, release-15 type II, and release-16 type II, as 8, 2, 2, respectively.
  • the processing cycles may be represented by the expression 2x+3y+ (8-x-y) which must be equal to or less than 14 (e.g., assuming 14 available cycles) , which is equivalent to x+2y being less than or equal to 6. Therefore, the capability of the UE may be underutilized.
  • FIG. 4 is a table 400 illustrating a number of resources reported by a UE for a combination of codebooks to be processed simultaneously by a UE.
  • a UE may report per-codebook capability (e.g., per band or per band combination or per-band per band combination) .
  • the UE may underreport the capability to accommodate concurrent codebook processing with mixed types.
  • the actual capability of a Rel-15 UE is 1) for Type I alone, processing 6 resources; 2) for Rel-15 Type II alone, processing 4 resources; 3) for Type I and Type II concurrently, processing 4 resources for type I and 2 resources for Type II, but not able to process 2 resources for Type I and 4 resources for Type II.
  • a Rel-15 UE may underreport Rel-15 type II capability from 4 to 2.
  • the UE’s real capability for Rel-16 Type II is 1) for Rel-16 Type II alone, processing 3 resources; 2) for concurrent Type I, Rel-15 Type II and Rel-16 Type II, processing 4, 1, and 1 resources, respectively, but not able to process 3, 2, 1 or 3, 1, 2 resources, respectively.
  • the Rel-16 UE may underreport Rel-15 type II capability from 4 to 1, and underreport Rel-16 Type II capability from 3 to 1.
  • the underreporting of the capability may be more important for band-combination implementations, and for frequency ranges (FRs) 1 and 2 (FR1-FR2) .
  • Certain aspects of the present disclosure are generally directed to UE capability signalling for a combination of codebooks having mixed types.
  • FIG. 5 is a flow diagram illustrating example operations 500 for wireless communication, in accordance with certain aspects of the present disclosure.
  • the operations 500 may be performed, for example, by UE (e.g., such as a UE 120a in the wireless communication network 100) .
  • UE e.g., such as a UE 120a in the wireless communication network 100.
  • Operations 500 may be implemented as software components that are executed and run on one or more processors (e.g., controller/processor 280 of FIG. 2) . Further, the transmission and reception of signals by the UE in operations 500 may be enabled, for example, by one or more antennas (e.g., antennas 252 of FIG. 2) . In certain aspects, the transmission and/or reception of signals by the UE may be implemented via a bus interface of one or more processors (e.g., controller/processor 280) obtaining and/or outputting signals.
  • processors e.g., controller/processor 280
  • the operations 500 begin, at block 502, by determining a capability of the UE with respect to channel state information (CSI) -reporting, wherein the capability of the UE comprises at least one of a maximum number of ports per resource the UE can support for the CSI-reporting for a codebook combination to be processed simultaneously by the UE, a maximum number of resources the UE can support for the CSI-reporting across codebooks of the codebook combination, and a maximum number of total ports the UE can support for the CSI-reporting across the codebooks of the codebook combination.
  • CSI channel state information
  • the UE may transmit an indication of the capability of the UE, and at block 506, receive a CSI request or configuration message indicating a number of ports per resource, a number of resources, and a total number of ports that are in accordance with the indicated capability of the UE.
  • the UE may report concurrent codebook capabilities with mixed types.
  • the types of codebooks may include Rel-15 Type II and Type I, or may include Rel-16 Type II and Type I.
  • the UE may report CSI-reporting parameters A, B, and C, A being a maximum number of ports/resource considering Rel-15 type II and Type I together, B being a maximum number of resources counting Rel-15 Type II and Type I together, and C being a maximum number of total ports counting Rel-15 Type II and Type I together.
  • the signaling of the capability may be per-band. For example, for any CC in the corresponding band, the configuration for processing Type I and Type II codebooks together should satisfy A, B and C reported by the UE.
  • the signaling may be per band combination (e.g., e.g., band 1 + band 2) .
  • the configuration for processing Type I and Type II codebooks together should satisfy A, B and C reported by the UE.
  • the signaling of the capability may be cross frequency range (FR) .
  • FR cross frequency range
  • the configuration for processing Type I and Type II codebooks together should satisfy A, B and C reported by the UE. Similar example applies to combination of Rel-16 Type II and Rel-15 Type I, or any other combination of more than two codebook types.
  • FIG. 6 is a flow diagram illustrating example operations 600 for wireless communication, in accordance with certain aspects of the present disclosure.
  • the operations 600 may be performed, for example, by a BS (e.g., such as the BS 110a in the wireless communication network 100) .
  • a BS e.g., such as the BS 110a in the wireless communication network 100.
  • Operations 600 may be implemented as software components that are executed and run on one or more processors (e.g., controller/processor 240 of FIG. 2) . Further, the transmission and reception of signals by the BS in operations 600 may be enabled, for example, by one or more antennas (e.g., antennas 234 of FIG. 2) . In certain aspects, the transmission and/or reception of signals by the BS may be implemented via a bus interface of one or more processors (e.g., controller/processor 240) obtaining and/or outputting signals.
  • processors e.g., controller/processor 240
  • the operations 600 begin, at block 602, by receiving an indication of a capability of the UE with respect to CSI-reporting, wherein the capability of the UE comprises at least one of a maximum number of ports per resource the UE can support for the CSI-reporting for a codebook combination to be processed simultaneously by the UE, a maximum number of resources the UE can support for the CSI-reporting across codebooks of the codebook combination, and a maximum number of total ports the UE can support for the CSI-reporting across the codebooks of the codebook combination.
  • the BS may generate a CSI request or configuration message indicating a number of ports per resource, a number of resources, and a total number of ports that are in accordance with the indicated capability of the UE, and at block 606, transmit the CSI request or the configuration message.
  • a CSI report may include a channel quality indicator (CQI) , a precoding matrix indicator (PMI) , a CSI-RS resource indicator (CRI) , and/or a rank indicator (RI) .
  • CQI channel quality indicator
  • PMI precoding matrix indicator
  • CRI CSI-RS resource indicator
  • RI rank indicator
  • a UE may be configured with a finer PMI subband than CQI subband.
  • the UE may also indicate UE support for PMI subbands.
  • CSI-reporting parameters e.g., maximum number of resources/port, maximum number of ports, and/or maximum number of resources
  • the first, second, and third CSI-RS capabilities reported by the UE may be different in some scenarios.
  • FIG. 8 is a flow diagram illustrating example operations 800 for wireless communication, in accordance with certain aspects of the present disclosure.
  • the operations 800 may be performed, for example, by UE (e.g., such as a UE 120a in the wireless communication network 100) .
  • UE e.g., such as a UE 120a in the wireless communication network 100.
  • Operations 800 may be implemented as software components that are executed and run on one or more processors (e.g., controller/processor 280 of FIG. 2) . Further, the transmission and reception of signals by the UE in operations 800 may be enabled, for example, by one or more antennas (e.g., antennas 252 of FIG. 2) . In certain aspects, the transmission and/or reception of signals by the UE may be implemented via a bus interface of one or more processors (e.g., controller/processor 280) obtaining and/or outputting signals.
  • processors e.g., controller/processor 280
  • the operations 800 begin, at block 802, by determining a first capability of the UE with respect to CSI-reporting for a codebook or a codebook combination to be processed simultaneously by the UE, and at block 804, determining a second capability of the UE, the second capability being a number of PMIs supported by the UE when supporting the first capability, wherein the determination of the first capability and the second capability are dependent on each other.
  • the UE transmits a message having at least an indication of the first capability and the second capability.
  • the UE receives a CSI request or configuration message indicating a number of ports per resource, a number of resources, a number of total ports, and a number of PMIs to be used for the CSI-reporting and that are in accordance with the first capability and the second capability.
  • the reporting of the UE’s support for the number of PMI subbands may be made jointly with the triplet of parameters A, B, and C, as described herein. In other words, the determination of R or supporting > 19 and the determination of the triplet are dependent on each other.
  • the indication of the UE’s support for the number of PMI subbands allows for the BS to configure parameters for the CSI-reporting based on the number of PMI subbands to be configured since the number of PMI subbands impacts the number of CSI-reporting parameters (e.g., number of resources) .
  • the signaling of the capability may be cross FR.
  • the configuration for processing Type I and Type II codebooks together should satisfy A, B and C reported by the UE. Similar example applies to combination of Rel-16 Type II and Rel-15 Type I, or any other combination of more than two codebook types.
  • the triplets of A, B, C, and D may be specific to a combination of bands. That is, for any CC in the corresponding band combination, the configuration for processing Type I and Type II codebooks together should satisfy A, B, C, and D reported by the UE.
  • the parameters A, B, and C may be specific to a single codebook (e.g., R is reported per codebook) , specific to a codebook of a combination (e.g., for codebook combo of codebook 1 and codebook 2, the UE signals the capability for codebook1 and codebook2 separately considering they are concurrently processed) , or specific to a codebook combination (e.g., for the combination of codebook1 and codebook2 together) .
  • FIG. 9 is a flow diagram illustrating example operations 900 for wireless communication, in accordance with certain aspects of the present disclosure.
  • the operations 900 may be performed, for example, by a BS (e.g., such as the BS 110a in the wireless communication network 100) .
  • a BS e.g., such as the BS 110a in the wireless communication network 100.
  • Operations 900 may be implemented as software components that are executed and run on one or more processors (e.g., controller/processor 240 of FIG. 2) . Further, the transmission and reception of signals by the BS in operations 900 may be enabled, for example, by one or more antennas (e.g., antennas 234 of FIG. 2) . In certain aspects, the transmission and/or reception of signals by the BS may be implemented via a bus interface of one or more processors (e.g., controller/processor 240) obtaining and/or outputting signals.
  • processors e.g., controller/processor 240
  • the operations 900 begin, at block 902, by receiving a message having an indication of a first capability of the UE with respect to CSI-reporting for a codebook or a codebook combination to be processed simultaneously by the UE and a second capability of the UE, the second capability being a number of PMIs supported by the UE when supporting the first capability.
  • the BS may generate a CSI request or configuration message indicating a number of ports per resource, a number of resources, a number of total ports, and a number of PMIs to be used for the CSI-reporting and that are in accordance with the first capability and the second capability, and at block 906, transmit the CSI request or configuration message.
  • UE capability signaling may include an indication of a maximum number of multiple-input and multiple-output (MIMO) layers per band and per band combination.
  • MIMO multiple-input and multiple-output
  • the UE may support a common number of MIMO layers (e.g., rank) .
  • rank a number of MIMO layers
  • the UE may only support rank-1 for a Type II codebook which has a higher complexity, but also support rank-2 for a Type I codebook which has a lower complexity.
  • Certain aspects of the present disclosure are directed to UE capability signaling that supports codebook-specific rank capability.
  • FIG. 10 is a flow diagram illustrating example operations 1000 for wireless communication, in accordance with certain aspects of the present disclosure.
  • the operations 1000 may be performed, for example, by UE (e.g., such as a UE 120a in the wireless communication network 100) .
  • UE e.g., such as a UE 120a in the wireless communication network 100.
  • Operations 1000 may be implemented as software components that are executed and run on one or more processors (e.g., controller/processor 280 of FIG. 2) . Further, the transmission and reception of signals by the UE in operations 1000 may be enabled, for example, by one or more antennas (e.g., antennas 252 of FIG. 2) . In certain aspects, the transmission and/or reception of signals by the UE may be implemented via a bus interface of one or more processors (e.g., controller/processor 280) obtaining and/or outputting signals.
  • processors e.g., controller/processor 280
  • the operations 1000 begin, at block 1002, by determining a capability of the UE with respect to CSI-reporting for a codebook or a codebook combination to be processed simultaneously by the UE, and at block 1004, determining a maximum number of MIMO layers supported by the UE for each of one or more codebook types associated with the codebook or the codebook combination.
  • the UE may transmit an indication of the capability of the UE and the maximum number of MIMO layers, and at block 1008, receive a CSI request or configuration in accordance with the reported capability.
  • the UE may report a maximum number of MIMO layers. For instance, the UE may signal the supported maximum number of MIMO layers jointly with the triplet of CSI-reporting parameters A, B, and C, as described herein.
  • the UE may signal parameters A, B, C, and D, A being the maximum number of ports/resource, B being the maximum number of resources (e.g., for a single codebook or a certain codebook of a codebook combination or counting a combination of codebooks such as Rel-15 Type II and Type I together) , C being a maximum number of total ports (e.g., for a single codebook or a certain codebook of a codebook combination or counting the combination of codebooks such as Rel-15 Type II and Type I together) , and D being the indication the maximum number of MIMO layers supported for Rel-15 Type II and Type I.
  • A being the maximum number of ports/resource
  • B being the maximum number of resources (e.g., for a single codebook or a certain codebook of a codebook combination or counting a combination of codebooks such as Rel-15 Type II and Type I together)
  • C being a maximum number of total ports (e.g., for a single codebook or a certain codebook of a code
  • the signaling of the number of MIMO layers may be per band, or per combination of bands or per band in per band combinations or per combination of frequency ranges.
  • the UE may signal a maximum of 1 MIMO layer (i.e., rank-1) for Rel-15 or Rel-16 Type II and a maximum of 2 MIMO layers for Rel-15 Type I.
  • FIG. 11 is a flow diagram illustrating example operations 1100 for wireless communication, in accordance with certain aspects of the present disclosure.
  • the operations 1100 may be performed, for example, by a BS (e.g., such as the BS 110a in the wireless communication network 100) .
  • a BS e.g., such as the BS 110a in the wireless communication network 100.
  • Operations 1100 may be implemented as software components that are executed and run on one or more processors (e.g., controller/processor 240 of FIG. 2) . Further, the transmission and reception of signals by the BS in operations 1100 may be enabled, for example, by one or more antennas (e.g., antennas 234 of FIG. 2) . In certain aspects, the transmission and/or reception of signals by the BS may be implemented via a bus interface of one or more processors (e.g., controller/processor 240) obtaining and/or outputting signals.
  • processors e.g., controller/processor 240
  • the operations 1100 begin, at block 1102, by receiving an indication of a capability of the UE with respect to CSI-reporting for a codebook or a codebook combination to be processed simultaneously by the UE and a maximum number of MIMO layers supported by the UE for each of one or more codebook types associated with the codebook or the codebook combination.
  • the BS may generate a CSI request or configuration message in accordance with the reported capability, and at block 1106, transmit the CSI request or configuration message.
  • FIG. 12 illustrates a communications device 1200 that may include various components (e.g., corresponding to means-plus-function components) configured to perform operations for the techniques disclosed herein.
  • the communications device 1200 includes a processing system 1202 coupled to a transceiver 1208.
  • the transceiver 1208 is configured to transmit and receive signals for the communications device 1200 via an antenna 1210, such as the various signals as described herein.
  • the processing system 1202 may be configured to perform processing functions for the communications device 1200, including processing signals received and/or to be transmitted by the communications device 1200.
  • the processing system 1202 includes a processor 1204 coupled to a computer-readable medium/memory 1212 via a bus 1206.
  • the computer-readable medium/memory 1212 is configured to store instructions (e.g., computer-executable code) that when executed by the processor 1204, cause the processor 1204 to perform the operations described herein.
  • computer-readable medium/memory 1212 stores code 1214 for receiving/transmitting; code 1216 for determining, code 1218 for generating.
  • the processor 1204 has circuitry configured to implement the code stored in the computer-readable medium/memory 1212.
  • the processor 1204 includes circuitry 1220 for receiving/transmitting; circuitry 1224 for determining, and circuitry 1226 for generating.
  • a method for wireless communication by a user-equipment comprising determining a capability of the UE with respect to channel state information (CSI) -reporting, wherein the capability of the UE comprises at least one of a maximum number of ports per resource the UE can support for the CSI-reporting for a codebook combination to be processed simultaneously by the UE, a maximum number of resources the UE can support for the CSI-reporting across codebooks of the codebook combination, and a maximum number of total ports the UE can support for the CSI-reporting across the codebooks of the codebook combination, transmitting an indication of the capability of the UE, and receiving a CSI request or configuration message indicating a number of ports per resource, a number of resources, and a total number of ports that are in accordance with the indicated capability of the UE.
  • CSI channel state information
  • Aspect 2 The method of Aspect 1, wherein the capability is specific to each of one or more bands.
  • Aspect 3 The method of Aspect 1 or 2, wherein the capability is specific to a combination of bands or a combination of frequency range.
  • a method for wireless communication by a UE comprising determining a first capability of the UE with respect to CSI-reporting for a codebook or a codebook combination to be processed simultaneously by the UE, determining a second capability of the UE, the second capability being a number of PMIs supported by the UE when supporting the first capability, wherein the determination of the first capability and the second capability are dependent on each other, transmitting a message having at least an indication of the first capability and the second capability, and receiving a CSI request or configuration message indicating a number of ports per resource, a number of resources, a number of total ports, and a number of PMIs to be used for the CSI-reporting and that are in accordance with the first capability and the second capability.
  • Aspect 5 The method of Aspect 4, wherein the indication in the message is one of a plurality of indications, each of the plurality of indications indicating a capability of the UE with respect to the CSI-reporting and a corresponding capability of the UE with respect to the number of PMIs.
  • Aspect 6 The method of Aspect 4 or 5, wherein the indication of the number of PMIs comprises an indication of at least one of whether the UE supports multiple PMI subbands per channel quality indicator (CQI) subband, or whether the UE supports a total number of PMI subbands greater than a predefined value.
  • CQI channel quality indicator
  • Aspect 7 The method of any of Aspects 4-6, wherein the capability of the UE with respect to the CSI-reporting for the codebook or the codebook combination comprising a maximum number of CSI-reporting parameters the UE can support for a codebook or codebook combination to be processed simultaneously.
  • Aspect 8 The method of Aspect 7, wherein the maximum number of CSI-reporting parameters comprises at least one of a maximum number of the ports per resource the UE can support for the CSI-reporting for the codebook or across codebooks of the codebook combination, a maximum number of resources the UE can support for the CSI-reporting of the codebook or across the codebooks of the codebook combination, and a maximum number of total ports the UE can support for the CSI-reporting of the codebook or across the codebooks of the codebook combination.
  • Aspect 9 The method of any of Aspects 4-8, wherein the indication of the first capability and the second capability is specific to each of one or more bands or to a combination of bands or a combination of frequency ranges.
  • a method for wireless communication by a UE comprising determining a capability of the UE with respect to CSI-reporting for a codebook or a codebook combination to be processed simultaneously by the UE, determining a maximum number of multiple-input and multiple-output (MIMO) layers supported by the UE for each of one or more codebook types associated with the codebook or the codebook combination, transmitting an indication of the capability of the UE and the maximum number of MIMO layers, and receiving a CSI request or configuration in accordance with the reported capability.
  • MIMO multiple-input and multiple-output
  • Aspect 11 The method of Aspect 10, wherein the indication of the capability of the UE and the maximum number of layers is one of a plurality of indications, each of the plurality of indications indicating a capability of the UE with respect to the CSI-reporting and a corresponding maximum number of MIMO layers.
  • Aspect 12 The method of Aspect 10 or 11, wherein the maximum number of MIMO layers supported by the UE is specific to each of one or more bands.
  • Aspect 13 The method of any of Aspects 10-12, wherein the maximum number of MIMO layers supported by the UE is specific to a combination of bands or a combination of frequency range.
  • Aspect 14 The method of any of Aspects 10-13, further comprising: determining the maximum number of MIMO layers based on CSI-reporting parameters for the codebook or the codebook combination, the CSI-reporting parameters comprising at least one of a maximum number of ports per resource the UE can support for the CSI-reporting for the codebook combination, a maximum number of resources the UE can support for the CSI-reporting across codebooks of the codebook combination, and a maximum number of total ports the UE can support for the CSI-reporting across the codebooks of the codebook combination, wherein transmitting the indication comprises transmitting a message having the indication of the max MIMO layers together with the CSI-reporting parameters.
  • a method for wireless communication comprising receiving an indication of a capability of a UE with respect to CSI-reporting, wherein the capability of the UE comprises at least one of a maximum number of ports per resource the UE can support for the CSI-reporting for a codebook combination to be processed simultaneously by the UE, a maximum number of resources the UE can support for the CSI-reporting across codebooks of the codebook combination, and a maximum number of total ports the UE can support for the CSI-reporting across the codebooks of the codebook combination, generating a CSI request or configuration message indicating a number of ports per resource, a number of resources, and a total number of ports that are in accordance with the indicated capability of the UE, and transmitting the CSI request or the configuration message.
  • Aspect 16 The method of Aspect 15, wherein the capability is specific to each of one or more bands.
  • Aspect 17 The method of Aspect 15 or 16, wherein the capability is specific to a combination of bands or a combination of frequency ranges.
  • a method for wireless communication comprising receiving a message having an indication of a first capability of a UE with respect to CSI-reporting for a codebook or a codebook combination to be processed simultaneously by the UE and a second capability of the UE, the second capability being a number of PMIs supported by the UE when supporting the first capability, generating a CSI request or configuration message indicating a number of ports per resource, a number of resources, a number of total ports, and a number of PMIs to be used for the CSI-reporting and that are in accordance with the first capability and the second capability, and transmitting the CSI request or configuration message.
  • Aspect 19 The method of Aspect 18, wherein the indication in the message is one of a plurality of indications, each of the plurality of indications indicating a capability of the UE with respect to the CSI-reporting and a corresponding capability of the UE with respect to the number of PMIs.
  • Aspect 20 The method of Aspect 18 or 19, wherein the indication of the number of PMIs comprises an indication of at least one of whether the UE supports multiple PMI subbands per CQI subband, or whether the UE supports a total number of PMI subbands greater than a predefined value.
  • Aspect 21 The method of any of Aspects 18-20, wherein the capability of the UE with respect to the CSI-reporting for the codebook combination comprising a maximum number of CSI-reporting parameters the UE can support for a codebook or codebook combination to be processed simultaneously.
  • Aspect 22 The method of Aspect 21, wherein the maximum number of CSI-reporting parameters comprises at least one of a maximum number of the ports per resource the UE can support for the CSI-reporting for the codebook or across codebooks of the codebook combination, a maximum number of resources the UE can support for the CSI-reporting of the codebook or across the codebooks of the codebook combination, and a maximum number of total ports the UE can support for the CSI-reporting of the codebook or across the codebooks of the codebook combination.
  • Aspect 23 The method of any of Aspects 18-22, wherein the indication of the first capability and the second capability is specific to each of one or more bands or to a combination of bands or a combination of frequency ranges.
  • a method for wireless communication comprising receiving an indication of a capability of a UE with respect to CSI-reporting for a codebook or a codebook combination to be processed simultaneously by the UE and a maximum number of MIMO layers supported by the UE for each of one or more codebook types associated with the codebook or the codebook combination, generating a CSI request or configuration message in accordance with the reported capability, and transmitting the CSI request or configuration message.
  • Aspect 25 The method of Aspect 24, wherein the indication of the capability of the UE and the maximum number of layers is one of a plurality of indications, each of the plurality of indications indicating a capability of the UE with respect to the CSI-reporting and a corresponding maximum number of MIMO layers.
  • Aspect 26 The method of Aspect 24 or 25, wherein the maximum number of MIMO layers supported by the UE is specific to each of one or more bands.
  • Aspect 27 The method of any of Aspects 24-26, wherein the maximum number of MIMO layers supported by the UE is specific to a combination of bands or a combination of frequency ranges.
  • Aspect 28 The method of any of Aspects 24-27, wherein the maximum number of MIMO layers is determined based on CSI-reporting parameters for the codebook or the codebook combination, the CSI-reporting parameters comprising at least one of a maximum number of ports per resource the UE can support for the CSI-reporting for the codebook combination, a maximum number of resources the UE can support for the CSI-reporting across codebooks of the codebook combination, and a maximum number of total ports the UE can support for the CSI-reporting across the codebooks of the codebook combination, wherein receiving the indication comprises receiving a message having the indication of the max MIMO layers together with the CSI-reporting parameters.
  • the processing complexity associated with different codebook types may be unequal.
  • the processing complexity of a type I single panel may be about the same as type I multi-panel, but less than the release-15 type II port selection codebook.
  • the processing complexity of the release-15 type II port selection codebook may be about the same as release-15 type II but less than release-16 type II.
  • the unequal processing complexity of codebook types may result in underreported capability by the UE since the UE may plan for the worst case scenario with respect to the CSI-reporting configuration by the BS 110.
  • a single processing cycle may be required by a single NZP CSI-RS resource associated with a type I single panel codebook, 2 processing cycles may be required by a single NZP CSI-RS resource associated with release-15 type II codebook, and three processing cycles may be required by a single NZP CSI-RS resource associated with a release-16 type II code book.
  • FIG. 13 is a flow diagram illustrating example operations 1300 for wireless communication, in accordance with certain aspects of the present disclosure.
  • the operations 1300 may be performed, for example, by a BS (e.g., such as the BS 110a in the wireless communication network 100) .
  • a BS e.g., such as the BS 110a in the wireless communication network 100.
  • Operations 1300 may be implemented as software components that are executed and run on one or more processors (e.g., controller/processor 240 of FIG. 2) . Further, the transmission and reception of signals by the BS in operations 1300 may be enabled, for example, by one or more antennas (e.g., antennas 234 of FIG. 2) . In certain aspects, the transmission and/or reception of signals by the BS may be implemented via a bus interface of one or more processors (e.g., controller/processor 240) obtaining and/or outputting signals.
  • processors e.g., controller/processor 240
  • the operations 1300 may begin, at block 1305, by receiving an indication of a capability of a UE with respect to CSI-reporting, the capability of the UE being specific to a codebook combination to be processed simultaneously by the UE.
  • the indicated capability of the UE comprises at least one of a maximum number of resources for the CSI-reporting for a particular codebook type, a maximum number of ports per resource for the CSI-reporting for the particular codebook type, or a maximum number of total ports across the resources for the CSI-reporting for the particular codebook type.
  • the BS may determine one or more parameters to be configured for the CSI-reporting based on the capability of the UE, and at block 1315, configure the UE to perform the CSI-reporting using the determined one or more parameters.
  • the codebook combination may be one of a plurality of codebook combinations, and receiving the indication of the capability of the UE may include receiving separate (e.g., different) capability information for each of the plurality of codebook combinations.
  • the indicated capability of the UE may include at least one codebook specific capability associated with each codebook of the plurality of codebooks and a processing weight associated with the codebook.
  • the determination of the one or more parameters to be configured may include calculating the capability of the UE specific to the codebook combination based on the codebook specific capability of UE associated with each codebook of a plurality of codebooks, and the processing weight associated with the corresponding codebook.
  • the indicated capability of the UE may include an indication of at least one cap associated with a sum of weighted codebook capabilities such that a product of one of the one or more parameters associated with each of the plurality of codebooks and the processing weight associated with the corresponding codebook, summed for the plurality of codebooks, may be less than the indicated cap.
  • the codebook capability may include at least one of a maximum number of resources to be configured for a particular codebook type, a maximum number of ports per resource to be configured for the particular codebook type, and a maximum number of total ports to be configured across the resources for the particular codebook type.
  • the indicated at least one cap may include a first cap of a sum of weighted resources such that the product of a number of resources to be configured for each of the plurality of codebooks and the processing weight of the codebook, summed for the plurality of codebooks, is less than the indicated first cap, and a second cap of a sum of weighted ports such that the product of a number of ports to be configured for each of the plurality of codebooks and the processing weight of the codebook, summed for the plurality of codebooks, is less than the indicated second cap.
  • the BS may also receive an indication of a maximum total number of resources for the CSI-reporting such that the resources configured for the plurality of codebooks is less than the indicated maximum total number of resources, and a maximum total number of ports for the CSI-reporting such that the ports configured for the plurality of codebooks is less than the indicated maximum total number of ports, as described in more detail herein.
  • FIG. 14 is a flow diagram illustrating example operations 1400 for wireless communication, in accordance with certain aspects of the present disclosure.
  • the operations 1400 may be performed, for example, by UE (e.g., such as a UE 120a in the wireless communication network 100) .
  • UE e.g., such as a UE 120a in the wireless communication network 100.
  • the operations 1400 may be complimentary operations by the UE to the operations 1400 performed by the BS.
  • Operations 1400 may be implemented as software components that are executed and run on one or more processors (e.g., controller/processor 280 of FIG. 2) .
  • the transmission and reception of signals by the UE in operations 1400 may be enabled, for example, by one or more antennas (e.g., antennas 252 of FIG. 2) .
  • the transmission and/or reception of signals by the UE may be implemented via a bus interface of one or more processors (e.g., controller/processor 280) obtaining and/or outputting signals.
  • the operations 1400 may begin, at block 1405, by determining a capability of the UE with respect to CSI-reporting, the capability of the UE being specific to a codebook combination to be processed simultaneously by the UE.
  • the BS 110 transmits the indication of the capability of the UE, and at block 1415, receives a configuration of one or more parameters for the CSI-reporting in accordance with the indication of the capability.
  • a UE may report CSI processing capability per codebook combination and per codebook.
  • the UE may report up to N codebook combinations.
  • Each codebook combination may include a combination of up to M codebooks, and the UE may report capability for up to M codebooks.
  • the UE may report the maximum number of transmit ports per resource, the maximum number of resources per band, and the total number of transmit ports per band.
  • the indicated capability of the UE may differ for different codebook combinations with respect to the maximum number of resources, maximum number of ports per resource, and maximum total ports or codebook types.
  • the UE may also report the value of N and M as an additional capability, N being the maximum number of different codebook combinations and M being the maximum number of codebooks per combination, as described herein.
  • FIGs. 15A, 15B, 15C, and 15D illustrate UE capability information for various codebook combinations, in accordance with certain aspects of the present disclosure.
  • Each of the UE capabilities for the various codebook combinations may be explicitly signalled to the BS 110 by the UE 120.
  • the UE may indicate a maximum number of resources, maximum number of ports per resource, maximum number of total ports, for each codebook of the combination.
  • the BS 110 may then determine the UE capability for a specific codebook combination to be configured, allowing the BS 110 to configure resources and ports to be used for CSI reporting for the codebook combination.
  • the codebook combination signaling may be implemented for a case where the codebook combination includes the combination of codebooks from different bands.
  • FIG. 16 illustrates UE capability parameters for various codebooks and a weight associated with each codebook, in accordance with certain aspects of the present disclosure.
  • the UE may report a processing weight for a codebook configuration, the processing weight x i being specific to a tuple of codebook type, maximum number of resources (K i ) of a particular codebook i, maximum number of ports per resource (P i ) of a particular codebook i, and maximum number of total ports across all resources (N i ) of a particular codebook i, as illustrated in FIG. 16.
  • the UE may also report a variable y indicating a cap of the sum of weighted resources, variable z indicating a cap of the sum of the weighted ports, and K indicating the maximum total number of resources across all codebooks of the codebook combination.
  • the BS 110 may determine the resources and ports to be configured that is within the capability of the UE for a particular codebook combination to be configured, such that for the codebook combination being configured, the following expressions hold true.
  • k i is the configured number of resources for the codebook i
  • p i is the configured number of ports per resource for the codebook i
  • x i is the processing weight of the codebook i
  • M is the number of codebooks of the configured codebook combination
  • N is the maximum number of total ports across all resources and for all codebooks of the configured codebook combination.
  • the value of the processing weight x i may be selected from ⁇ 1, 1.5, 2, 2.5, 3, 3.5 ⁇ , in certain aspects.
  • the UE may further report capability of supporting a maximum number of spatial beams (L) which may be selected from values 2, 4, and 6, and capability of supporting maximum precoding matrix indicator (PMI) granularity (R) which may be 1 or 2 (e.g., meaning the number of PMIs per channel quality information (CQI) subband, or the ratio between a CQI subband size and a PMI subband size) .
  • L maximum number of spatial beams
  • PMI maximum precoding matrix indicator
  • R which may be 1 or 2 (e.g., meaning the number of PMIs per channel quality information (CQI) subband, or the ratio between a CQI subband size and a PMI subband size) .
  • the processing weight x i value may be different by L and R.
  • FIGs. 17A and 17B illustrate example processing weights for various codebook types and example configurations of resources to be used for CSI-reporting, in accordance with certain aspects of the present disclosure.
  • the UE may indicate a weight (x 0 ) of 1 for type I single panel codebook, a weight (x 1 ) of 2 for release-15 type II codebook, and a weight (x 2 ) of 3 for release-16 type II codebook.
  • various resources may be configured for the codebooks, denoted by variables k 0 , k 1 , and k 2 .
  • the UE may indicate a cap of the sum of weight resources (y) as being equal to 14 and a maximum of 8 total resources to be triggered simultaneously per CC. Therefore, the BS 110 may determine resources that the UE is capable of processing for the CSI-reporting via the capability information from the UE, as described herein, and assign resources for the CSI-reporting.
  • k 0 may be equal to 8 resources for the single panel
  • k 1 may be equal to zero resources for the release-15 type II codebook
  • k 2 may be equal to zero resources for the release-16 type II codebook.
  • k 0 may be equal to 4 resources (e.g., weight resources of 4) for the single panel
  • k 1 may be equal to 2 resources (e.g., weighted resources of 4) for the release-15 type II codebook
  • k 2 may be equal to 2 resources (e.g., weighted resources of 6) for the release-16 type II codebook. Therefore, the sum of the weighted resources may be 14, which is equal to the cap of the sum of weight resources (y) , as described herein.
  • the UE may further report the sum of weight resources (z) as being equal to 256. This capability further implies a constraint on the number of ports per resource for each of the valid configuration, as described in more detail herein.
  • FIGs. 22A, 22B, and 22C illustrate example processing weights for various codebook types, maximum weighted sum of resources and ports, and example configurations of resources to be used for CSI-reporting, in accordance with certain aspects of the present disclosure.
  • the UE may indicate a weight (x 0 ) of 1 for type I single panel codebook, a weight (x 1 ) of 2 for release-15 type II codebook, and a weight (x 2 ) of 3 for release-16 type II codebook.
  • the UE may also indicate maximum number of resources, maximum number of ports per source, and maximum total ports, for the various codebooks types, as illustrated.
  • the UE may also indicate a maximum weighted sum of resources (y) of 14, as well as a maximum weighted sum of ports (z) of 256.
  • various resources and ports may be configured for the codebooks, denoted by resource variables k 0 , k 1 , and k 2 and port per resource variables p 0 , p 1 , and p 2 .
  • the BS 110 may determine resources and ports that the UE is capable of processing for the CSI-reporting via the capability information from the UE, as described herein, and assign resources and ports for the CSI-reporting. For example, when CSI-reporting for only a type I single panel codebook is being configured, k 0 may be equal to 8 resources for the single panel, k 1 may be equal to zero resources for the release-15 type II codebook, and k 2 may be equal to zero resources for the release-16 type II codebook.
  • k 2 may be equal to 4 resources for Rel-16 type II codebook (k 1 may be equal to zero resources for the release-15 type II codebook, and k 0 may be equal to zero resources for the Type I single panel codebook) .
  • p 2 may be equal to 16 ports per resource for the Rel-16 Type II codebook.
  • k 0 may be equal to 2 resources (e.g., weight resources of 2) for the single panel and k 2 may be equal to 4 resources (e.g., weighted resources of 12) for the release-16 type II codebook. Therefore, the sum of the weighted resources may be 14, which is equal to the cap of the sum of weight resources (y) , as described herein.
  • k 0 may be equal to 4 resources (e.g., weight resources of 4) for the single panel
  • k 1 may be equal to 2 resources (e.g., weighted resources of 4) for the release-15 type II codebook
  • k 2 may be equal to 2 resources (e.g., weighted resources of 6) for the release-16 type II codebook. Therefore, the sum of the weighted resources may be 14, which is equal to the cap of the sum of weight resources (y) , as described herein.
  • FIG. 18 is a flow diagram illustrating example operations 1800 for wireless communication, in accordance with certain aspects of the present disclosure.
  • the operations 1800 may be performed, for example, by a BS (e.g., such as the BS 110a in the wireless communication network 100) .
  • a BS e.g., such as the BS 110a in the wireless communication network 100.
  • Operations 1800 may be implemented as software components that are executed and run on one or more processors (e.g., controller/processor 240 of FIG. 2) . Further, the transmission and reception of signals by the BS in operations 900 may be enabled, for example, by one or more antennas (e.g., antennas 234 of FIG. 2) . In certain aspects, the transmission and/or reception of signals by the BS may be implemented via a bus interface of one or more processors (e.g., controller/processor 240) obtaining and/or outputting signals.
  • processors e.g., controller/processor 240
  • the operations 1800 may begin, at block 1805, by receiving an indication of a capability of a UE with respect to CSI-reporting, the capability of the UE being received for each of at least two codebooks to be processed by the UE.
  • the BS determining one or more parameters to be configured for the CSI-reporting based on the capability of the UE, and at block 1815, configures the UE to perform the CSI-reporting using the determined one or more parameters.
  • the one or more parameters may be determined by assuming that the capability of the UE with respect to a first codebook of the at least two codebooks is the same as a second codebook of the at least two codebooks, if the first codebook and the second codebook are to be configured for simultaneous processing by the UE.
  • configuring the UE to perform the CSI-reporting comprises avoiding configuring the UE to process the first codebook simultaneously with the second codebook.
  • the first codebook may have a lower processing complexity at the UE as compared to the second codebook.
  • the second codebook may be a release-16 type II CSI codebook
  • the first codebook may be a release-15 type II CSI codebook.
  • the indicated capability of the UE comprises at least one of a maximum number of resources to be configured for each of the at least two codebooks, a maximum number of ports per resource to be configured for each of the at least two codebooks, and a maximum number of total ports across the resources to be configured for each of the at least two codebooks.
  • the one or more parameters comprises at least one of a number of resources to be configured for each of the first and the second codebook such that a sum of the resources configured for the first and the second codebook is less than the a maximum number of resources to be configured for the second codebook, or a number of ports to be configured for each of the first codebook and the second codebook such that a sum of the ports configured for the first and the second codebook is less than the maximum number of ports to be configured for the second codebook.
  • FIG. 19 is a flow diagram illustrating example operations 1900 for wireless communication, in accordance with certain aspects of the present disclosure.
  • the operations 1900 may be performed, for example, by UE (e.g., such as a UE 120a in the wireless communication network 100) .
  • the operations 1900 may be complimentary operations by the UE to the operations 1900 performed by the BS.
  • Operations 1900 may be implemented as software components that are executed and run on one or more processors (e.g., controller/processor 280 of FIG. 2) .
  • the transmission and reception of signals by the UE in operations 1900 may be enabled, for example, by one or more antennas (e.g., antennas 252 of FIG. 2) .
  • the transmission and/or reception of signals by the UE may be implemented via a bus interface of one or more processors (e.g., controller/processor 280) obtaining and/or outputting signals.
  • the operations 1900 may begin, at block 1905, by determining a capability of the UE with respect to CSI-reporting, the capability of the UE being received for each of at least two codebooks to be processed by the UE.
  • the UE transmits an indication of the capability of the UE to a network entity, and at block 1915, receives a configuration of one or more parameters for the CSI-reporting in accordance with the capability of the UE.
  • the indication of the capability is determined by expecting that the one or more parameters are to be configured by the network assuming that the capability of the UE with respect to a first codebook of the at least two codebooks is the same as a second codebook of the at least two codebooks, if the first codebook and the second codebook are to be configured for simultaneous processing by the UE, or the network entity is to avoid configuring the UE to process the first codebook simultaneously with the second codebook.
  • the UE if release-15 and release-16 type II CSI are to be processed simultaneously, the UE expects the number of resources for each CSI, the number ports/resources for each CSI, and the number of total ports for each CSI should follow the reported capability of the release-16 type II CSI. Thus, the UE may report the capability for each codebook separately. For instance, if the BS configures Type I, release-15 Type II, and release-16 Type II codebooks for simultaneous processing, the capability of release-16 type II codebook becomes a joint constraint to the combination of the release-15 type II and the release-16 type II codebooks. That is, the number of resources for the type I codebook (k 0 ) , the release-15 type II codebook (k 1 ) , and the release-16 type II codebook (k 2 ) , may be configured such that the following expressions hold true:
  • the number of ports for the type I codebook (p 0 ) , the release-15 type II codebook (p 1 ) , and the release-16 type II codebook (p 2 ) may be configured, such that following expressions hold true for the total number of ports configured for the type I codebook, the release-15 type II codebook, and the release-16 type II codebook:
  • the number of ports for the type I codebook (p 0 ) , the release-15 type II codebook (p 1 ) , and the release-16 type II codebook (p 2 ) may be configured, such that following equation hold true for the number of ports per resource configured for the type I codebook, the release-15 type II codebook, and the release-16 type II codebook:
  • release-15 and release-16 type II codebooks may not be configured for simultaneous processing by the UE.
  • the BS configures the combination of type I and release-15 type II codebooks, the capability of each codebook and the total constraint may be followed.
  • the number of resources may be configured such that the following expressions hold true:
  • the total number of ports may be configured such that the following expressions hold true:
  • the number of ports per resource may be configured such that the following expressions hold true:
  • k 0 is the configured resources for a type I codebook
  • k 1 is the configured resources for release-15 type II codebook
  • K 0 is the maximum number of resources for the type I codebook
  • K 1 is the maximum number of resources for the release-15 type II codebook
  • p 0 is the configured ports per resource for the type I codebook
  • p 1 is the configured ports per resource for the release-15 codebook
  • P 0 is the maximum number of ports per resource for type I codebook
  • P 1 is the maximum number of ports per resource for release-15 type II codebook
  • N 1 is the maximum number of total ports across all resources for the type I codebook
  • N 2 is the maximum number of total ports across all resources for the release-15 type II codebook.
  • the y and z parameters may be reported per band-band combination, while the processing weight x i may be reported per codebook and per-band.
  • the UE may report y and z parameters per band, and also report y and z parameters per band-band combination, while x i is reported per band.
  • the BS 110 may follow the constraint of per band and per band-band combination.
  • the BS may follow the capability of each codebook and the total constraint.
  • the number of resources may be configured such that the following expressions hold true:
  • the total number of ports may be configured such that the following expressions hold true:
  • the number of ports per resource may be configured such that the following expressions hold true:
  • k 0 is the configured resources for a type I codebook
  • k 1 is the configured resources for release-15 type II codebook
  • K 0 is the maximum number of resources for the type I codebook
  • K 1 is the maximum number of resources for the release-15 type II codebook
  • p 0 is the configured ports per resource for the type I codebook
  • p 1 is the configured ports per resource for the release-15 codebook
  • P 0 is the maximum number of ports per resource for type I codebook
  • P 1 is the maximum number of ports per resource for release-15 type II codebook
  • N 1 is the maximum number of total ports across all resources for the type I codebook
  • N 2 is the maximum number of total ports across all resources for the release-15 type II codebook.
  • the UE may indication capability information without expecting release-15 type II CSI and release-16 Type II CSI being configured for simultaneous processing. That is, the BS 110 may avoid configuring release-15 type II CSI and release-16 Type II CSI for simultaneous processing.
  • the UE may report its capability of processing release-15 Type II codebook without considering simultaneous processing of both release-15 and release-16 Type II codebook CSIs.
  • the UE may report capability of processing release-16 Type II codebook CSI without considering simultaneous processing of both release-15 and release-16 Type II codebook CSIs.
  • the UE may indicate a maximum total number of resources of 14, a maximum number of resources for type I codebook as 8, maximum number of resources for release-15 type II as 6, and a maximum number of resources for release-16 Type II as 3. Since release-15 and release-16 Type II codebook are not to be configured for simultaneous processing, the configured resources based on the capability information indicated by the UE will be less than the maximum total number of resources of 14, assuming the number of cycles described with respect to FIG. 6. Therefore, the BS may configure resources such that the following expressions hold true:
  • the UE may not expect to be configured with CSI report exceeding the UE’s capability. If the BS configures a CSI report that exceeds the UE capability (or does not follow established rule for configuring the CSI-report) , the UE may treat the configuration as an error case. In some cases, the UE does not expect to be configured with release-15 and release-16 CSI to be processed simultaneously.
  • the UE may report the UE capability per band, and other cases, the UE may report the UE capability per band-band combination.
  • the UE may support X CSI reports, while in band B alone, the UE may report Y CSI reports.
  • CA inter-band carrier-aggregation
  • Certain aspects of the present disclosure are directed to enhancement of UE capability signaling to support concurrent codebooks.
  • a UE may signal capability (P i, j , K i, j , N i, j ) for some codebook combinations, and for combinations not explicitly signaled, the UE may not expect to process them simultaneously.
  • a UE may signal capability (P i, j , K i, j , N i, j ) for some codebook combinations. For combinations not explicitly signaled, (apart from the single- codebook capability of each codebook) , the UE may treat the mixed codebooks as one single (virtual) codebook.
  • FIG. 20 illustrates a communications device 2000 that may include various components (e.g., corresponding to means-plus-function components) configured to perform operations for the techniques disclosed herein.
  • the communications device 2000 includes a processing system 2002 coupled to a transceiver 2008.
  • the transceiver 2008 is configured to transmit and receive signals for the communications device 2000 via an antenna 2010, such as the various signals as described herein.
  • the processing system 2002 may be configured to perform processing functions for the communications device 2000, including processing signals received and/or to be transmitted by the communications device 2000.
  • the processing system 2002 includes a processor 2004 coupled to a computer-readable medium/memory 2012 via a bus 2006.
  • the computer-readable medium/memory 2012 is configured to store instructions (e.g., computer-executable code) that when executed by the processor 2004, cause the processor 2004 to perform the operations illustrated herein.
  • computer-readable medium/memory 2012 stores code 2014 for receiving; code 2016 for determining, code 2018 for configuring.
  • the processor 2004 has circuitry configured to implement the code stored in the computer-readable medium/memory 2012.
  • the processor 2004 includes circuitry 2020 for receiving; circuitry 2024 for determining, and circuitry 2026 for configuring.
  • FIG. 21 illustrates a communications device 2100 that may include various components (e.g., corresponding to means-plus-function components) configured to perform operations for the techniques disclosed herein.
  • the communications device 2100 includes a processing system 2102 coupled to a transceiver 2108.
  • the transceiver 2108 is configured to transmit and receive signals for the communications device 2100 via an antenna 2110, such as the various signals as described herein.
  • the processing system 2102 may be configured to perform processing functions for the communications device 2100, including processing signals received and/or to be transmitted by the communications device 2100.
  • the processing system 2102 includes a processor 2104 coupled to a computer-readable medium/memory 2112 via a bus 2106.
  • the computer-readable medium/memory 2112 is configured to store instructions (e.g., computer-executable code) that when executed by the processor 2104, cause the processor 2104 to perform the operations described herein.
  • computer-readable medium/memory 2112 stores code 2114 for determining; code 2116 for transmitting, and code 2118 for receiving.
  • the processor 2104 has circuitry configured to implement the code stored in the computer-readable medium/memory 2112.
  • the processor 2104 includes circuitry 2120 for determining; circuitry 2124 for transmitting, and circuitry 2126 for receiving.
  • FIG. 23 is a flow diagram illustrating example operations 2300 for wireless communication, in accordance with certain aspects of the present disclosure.
  • the operations 2300 may be performed, for example, by a BS (e.g., such as the BS 110a in the wireless communication network 100) .
  • a BS e.g., such as the BS 110a in the wireless communication network 100.
  • Operations 2300 may be implemented as software components that are executed and run on one or more processors (e.g., controller/processor 240 of FIG. 2) . Further, the transmission and reception of signals by the BS in operations 2300 may be enabled, for example, by one or more antennas (e.g., antennas 234 of FIG. 2) . In certain aspects, the transmission and/or reception of signals by the BS may be implemented via a bus interface of one or more processors (e.g., controller/processor 240) obtaining and/or outputting signals.
  • processors e.g., controller/processor 240
  • the operations 2300 may begin, at block 2305, by receiving an indication of a capability of a UE with respect to CSI-reporting, and at block 2310, determining one or more parameters associated with each of one or more CSI reports based on the capability of the UE, wherein the one or more parameters are determined based on a combination of codebooks or CSIs to be processed simultaneously by the UE.
  • the BS may generates a CSI request for the one or more CSI reports, and at block 2320, transmits the CSI request to the UE to perform the CSI-reporting using the determined one or more parameters.
  • FIG. 24 is a flow diagram illustrating example operations 2400 for wireless communication, in accordance with certain aspects of the present disclosure.
  • the operations 2400 may be performed, for example, by UE (e.g., such as a UE 120a in the wireless communication network 100) .
  • UE e.g., such as a UE 120a in the wireless communication network 100.
  • the operations 2400 may be complimentary operations by the UE to the operations 2400 performed by the BS.
  • Operations 2400 may be implemented as software components that are executed and run on one or more processors (e.g., controller/processor 280 of FIG. 2) .
  • the transmission and reception of signals by the UE in operations 2400 may be enabled, for example, by one or more antennas (e.g., antennas 252 of FIG. 2) .
  • the transmission and/or reception of signals by the UE may be implemented via a bus interface of one or more processors (e.g., controller/processor 280) obtaining and/or outputting signals.
  • the operations 2400 may begin, at 2405, with the UE determining a capability of the UE with respect to CSI-reporting, and at block 2410, transmitting an indication of the capability of the UE.
  • the UE receives a CSI request for one or more CSI reports, the CSI request comprising a configuration of one or more parameters associated with each of the one or more CSI reports, and at block 2420, determining the one or more CSI reports by determining the one or more parameters are in accordance with the capability reported by the UE, wherein determining the one or more parameters is based on a combination of codebooks or CSIs to be processed simultaneously by the UE.
  • a virtual codebook may be determined based on the maximum ports/resource, and summing the number of resources and summing the total ports of the codebook combination.
  • the following rule may be applied.
  • the tuple of ⁇ maximum number of ports/resources among the concurrent CSI requests, sum the number of resources across the concurrent CSI requests, sum the number of total ports across the concurrent CSI requests ⁇ may be subject to the reported capability of any codebook types among the concurrent CSI request.
  • the maximum ports per resource p max may be determined. For each codebook type, the tuple that has closest and not less than p max may be found. The sum of the number of resources may be capped by the minimum among concurrent codebook types. Moreover, the sum of the number of total ports may be capped by the minimum among concurrent codebook types. Both the BS and the UE may be configured with this rule. The BS may use the rule to perform CSI request scheduling (e.g., as a restriction for the scheduling) , and the UE may use the rule to check the validation of the CSI request (e.g., if invalid, it is an error case, and the corresponding procedure is up to UE implementation) .
  • CSI request scheduling e.g., as a restriction for the scheduling
  • the UE may use the rule to check the validation of the CSI request (e.g., if invalid, it is an error case, and the corresponding procedure is up to UE implementation) .
  • FIGs. 25A-25F are tables illustrating example reported capabilities and triggered CSI-reports, in accordance with certain aspects of the present disclosure.
  • a virtual codebook may be generated for a triggered CSI report of Type I SP codebook and a Rel-15 Type II codebook.
  • the number of ports/resource (16) of the virtual codebook in FIG. 25B may be equal to the maximum of the number of ports/resource of the configured CSI reports.
  • the number of resources of the virtual codebook for the triggered CSI report of FIG. 25B is the sum of the number of resources (4+1) for the codebook types of the triggered CSI report, which is equal to 5.
  • the total number of ports of the virtual codebook for the triggered CSI report of FIG. 25B is the sum of the total number of ports (48+16) for the codebook types of the triggered CSI report, which is equal to 64.
  • the virtual codebook is then compared to the reported capability, as illustrated in FIG. 25A, of the tuple that have closest and not less than p max (e.g., which is (16, 4, 48) for the Type I SP) .
  • p max e.g., which is (16, 4, 48
  • the corresponding capability for the Type I SP codebook may be (16, 4, 48) .
  • the triggered CSI report for the type I SP codebook may be invalid since the total number of resources (5) and the total number of ports (64) of the virtual codebook are greater than the total number of resources (4) and the total number of ports (48) of the reported capability for the Type I SP codebook.
  • the triggered CSI report for may be invalid since the total number of resources (5) and the total number of ports (64) of the virtual codebook are greater than the total number of resources (2) and the total number of ports (48) of the reported capability for the Rel-15 type II codebook.
  • the triggered CSI-report of FIG. 25C As illustrated in the triggered CSI-report of FIG. 25C, none of the reported capabilities illustrated in FIG. 25A for the Type I SP codebook have a match based on the virtual codebook of triggered CSI-report of FIG. 25C since both the tuples for the Type I SP (8, 8, 32) and (16, 4, 48) having a total number of ports/resource (8 and 16) that is less than the total number of ports/resource (48) of the virtual codebook. Therefore, the triggered CSI-report of FIG. 25C is also invalid.
  • the triggered CSI-report of FIG. 25D is also invalid since the total number of ports (48) of the virtual codebook is greater than the total number of ports (32) of the reported capability for the Rel-16 Type II codebook.
  • the triggered CSI-reports of FIGs. 25E and 25F are valid since each codebook type has a tuple that is not less than p max of the corresponding CSI-report, and the total number of resources and the total number of ports of the virtual codebooks are less than the respective total number of resources and total number of ports of the reported capabilities for the codebook types.
  • FIGs. 26A-26B are tables illustrating example reported capabilities and triggered CSI-report, in accordance with certain aspects of the present disclosure.
  • the type I SP codebook has a tuple that has closest and not less than p max of the virtual codebook of the CSI-report of FIG. 26B.
  • the triggered CSI-report is valid since each codebook type has a tuple that is not less than p max of the corresponding CSI-report, and the total number of resources (2) and the total number of ports (48) of the virtual codebooks are less than or equal to the respective total number of resources (2) and total number of ports (48) of the reported capabilities for the codebook types (Type I SP and Rel-15 Type II) .
  • the capability of the more complex codebook may be followed (e.g., in accordance with a complexity ranking) .
  • the ranking may be reported by a UE (e.g., UE reports a complexity order for codebook type together with (P i, j , K i, j , N i, j ) ) .
  • the sum of the number of resources and the sum of the total ports may follow the K i, j and N i, j reported in the more complex codebook.
  • the ranking of the codebook complexity may be based on a rule, as described herein.
  • the ranking rule may be based on at least one of codebook type, number of ports/resource, number of resources and number of total ports.
  • the ranking rule may be based on a metric calculated as a function of codebook type, number of ports/res, number of resources, and number of total ports. The codebook with the higher (or lower in some cases) metric may be considered to have a higher complexity, as described in more detail herein.
  • the rule for determining the complexity order of the codebooks may be as follows. If the current codebook has the same codebook type i, the codebook with the larger number of ports/resource in its capability may be considered as the more complex codebook. Thus, the maximum sum of the number of resources may follow the capability of the codebook with larger max number of ports/resource, (e.g., where ) . Moreover, the maximum sum of the number of ports may follow the capability of the codebook with the larger maximum number of ports/resource, (e.g., where ) .
  • the codebook with smaller number of resources in its capability may be considered to be the most complex codebook.
  • the maximum sum of the number of resources may follow the capability of the codebook with the minimum resource (e.g., where ) .
  • the maximum sum of the number of ports may follow the capability of the codebook with the minimum resources (e.g., where ) .
  • the codebook with the smaller number of total ports in its capability may be considered to be the more complex codebook.
  • the maximum sum of the number of resources may follow the capability of the codebook with the minimum total ports (e.g., where ) .
  • the maximum sum of the number of ports may follow the capability of the codebook with minimum total ports (e.g., where ) .
  • the maximum sum of the number of resources/total ports for each codebook type may be determined. Then the maximum sum of the number of resource/total ports for all codebooks may be determined based on a condition using the as described in more detail herein.
  • FIGs. 27A-27D are tables illustrating example reported capabilities and corresponding triggered reports, in accordance with certain aspects of the present disclosure.
  • the more complex codebook may be considered to be the codebook capability with the larger number of ports/resource (32, 2, 40) . Therefore, the codebook combination is valid if the sum of the number of resources for the codebooks is less than or equal to 2 and the sum of the number of ports for the codebooks is less than or equal to 40.
  • the condition to meet is as follows:
  • the triggered report 1 and 3 are invalid, and the triggered report 2 is valid.
  • the capabilities for codebooks of different types may be reported by a UE.
  • the more complicated codebook may be considered to be the codebook capability with the smaller number of resources (32, 2, 48) . Therefore, the condition to meet is as follows:
  • the triggered report 1 and 2 are invalid, and the triggered report 3 is valid.
  • the capabilities for codebooks of different types may be reported by a UE.
  • the number of resources of the codebook capabilities are the same (both 2) . Therefore, the codebook with the smaller number of total ports is considered to be the more complicated codebook (32, 2, 32) .
  • the condition to meet is as follows:
  • the triggered report 1 is invalid, and the triggered report 2 is valid.
  • the capabilities for codebooks of both different types (Type I and Re-15 Type II) , and the same type (two tuples of Type I codebook) may be reported by a UE.
  • the more complex codebook capability of the codebooks having the same type may be determined.
  • the reported capability 32, 4, 64
  • the condition to be met for the two Type I codebooks may be as follows:
  • the complexity may be determined across codebook types.
  • the Rel-15 Type II codebook capability is more complicated because the number of resources (3) of the Rel-15 Type II codebook is less than the number of resources (4) of the more complicated Type I codebook.
  • the triggered report 1 is invalid, and the triggered report 2 is valid.
  • codebook parameters may be signaled per band. For example, the codebook capability is reported independently in each band.
  • Certain aspects of the present disclosure are directed to codebook combination capability and CSI reporting for inter-band carrier aggregation (CA) .
  • CA inter-band carrier aggregation
  • the signaling of the UE capability (P i, j , K i, j , N i, j ) for codebook combinations may be associated with a codebook combination parameters in a BandCombinationList.
  • a carrier index for each codebook of each codebook combination may also be reported by the UE.
  • the mixed codebooks may be treated as one single (e.g., virtual) codebook.
  • the codebook combination may be applied regardless of inter-band CA, intra-band CA or non-CA case.
  • CSI1 with codebook 1 on CC1 and CSI2 with codebook type 2 on CC2 may be triggered.
  • the maximum number of ports/resource in CSI1 and CSI2, p max may be determined.
  • the capability of codebook 1 on CC1 and the capability of codebook 2 on CC2 satisfies p max .
  • the UE may expect to not process the codebooks simultaneously.
  • This technique may also be applied for inter-band CA. In other words, if a codebook combination is not reported for inter-band CA, then the codebook combination is not allowed to be triggered for simultaneous processing by the UE.
  • the avoid of simultaneous processing may be only applied to some particular codebook combinations, e.g., any combination of Rel-15 Type II, Rel-15 Type II port selection, Rel-16 Type II and Rel-16 Type II port selection.
  • a method for wireless communication comprising receiving an indication of a capability of a user-equipment (UE) with respect to channel state information (CSI) -reporting, the capability of the UE being specific to a codebook combination to be processed simultaneously by the UE, determining one or more parameters to be configured for the CSI-reporting based on the capability of the UE, and configuring the UE to perform the CSI-reporting using the determined one or more parameters.
  • UE user-equipment
  • CSI channel state information
  • Aspect 2 The method of Aspect 1, wherein the indicated capability of the UE comprises at least one of a maximum number of resources for the CSI-reporting for a particular codebook type, a maximum number of ports per resource for the CSI-reporting for the particular codebook type, or a maximum number of total ports across the resources for the CSI-reporting for the particular codebook type.
  • Aspect 3 The method of Aspect 1 or 2, wherein the codebook combination is one of a plurality of codebook combinations, and wherein receiving the indication of the capability of the UE comprises receiving separate capability information for each of the plurality of codebook combinations.
  • Aspect 4 The method of Aspect 3, wherein the separate capability information for each of the plurality of codebook combinations are different.
  • Aspect 5 The method of any of Aspects 1-4, wherein, the indicated capability of the UE comprises at least one codebook specific capability associated with each codebook of a plurality of codebooks and a processing weight associated with the codebook, and the determination of the one or more parameters to be configured comprises calculating the capability of the UE specific to the codebook combination based on the codebook specific capability of the UE associated with each codebook of a plurality of codebooks, and the processing weight associated with the corresponding codebook.
  • Aspect 6 The method of Aspect 5, wherein the indicated capability of the UE further comprises an indication of at least one cap associated with a sum of weighted codebook capabilities, and a product of one of the one or more parameters associated with each of the plurality of codebooks and the processing weight associated with the corresponding codebook, summed for the plurality of codebooks, is less than the indicated cap.
  • Aspect 7 The method of Aspect 6, wherein the capability comprises at least one of a maximum number of resources to be configured for a particular codebook type, a maximum number of ports per resource to be configured for the particular codebook type, and a maximum number of total ports to be configured across the resources for the particular codebook type.
  • Aspect 8 The method of Aspect 7, wherein the indicated at least one cap comprises a first cap of a sum of weighted resources such that the product of a number of resources to be configured for each of the plurality of codebooks and the processing weight of the codebook, summed for the plurality of codebooks, is less than the indicated first cap, and a second cap of a sum of weighted ports such that the product of a number of ports to be configured for each of the plurality of codebooks and the processing weight of the codebook, summed for the plurality of codebooks, is less than the indicated second cap.
  • Aspect 9 The method of Aspect 7 or 8, further comprising receiving an indication of a maximum total number of resources for the CSI-reporting such that the resources configured for the plurality of codebooks is less than the indicated maximum total number of resources.
  • Aspect 10 The method of any of Aspects 7-9, further comprising receiving an indication of a maximum total number of ports for the CSI-reporting such that the ports configured for the plurality of codebooks is less than the indicated maximum total number of ports.
  • Aspect 11 The method of any of Aspects 1-10, wherein the codebook combination comprises a combination of a first codebook for a first component carrier (CC) and a second codebook for a second CC.
  • the codebook combination comprises a combination of a first codebook for a first component carrier (CC) and a second codebook for a second CC.
  • a method for wireless communication by a user-equipment comprising determining a capability of the UE with respect to channel state information (CSI) -reporting, the capability of the UE being specific to a codebook combination to be processed simultaneously by the UE, and transmitting an indication of the capability of the UE, and receiving a configuration of one or more parameters for the CSI-reporting in accordance with the indication of the capability.
  • CSI channel state information
  • Aspect 14 The method of Aspect 13, wherein the indicated capability of the UE comprises at least one of a maximum number of resources for the CSI-reporting for a particular codebook type, a maximum number of ports per resource for the CSI-reporting for the particular codebook type, or a maximum number of total ports across the resources for the CSI-reporting for the particular codebook type.
  • Aspect 15 The method of Aspect 13 or 14, wherein the codebook combination is one of a plurality of codebook combination, and wherein determining the indication of the capability of the UE comprises determining separate capability information for each of the plurality of codebook combinations.
  • Aspect 16 The method of Aspect 15, wherein the separate capability information for each of the plurality of codebook combinations are different.
  • Aspect 17 The method of any of Aspects 13-16, wherein the indicated capability of the UE comprises at least one codebook specific capability associated with each codebook of a plurality of codebooks and a processing weight associated with the codebook.
  • Aspect 18 The method of Aspect 17, wherein the indicated capability of the UE further comprises an indication of at least one cap associated with a sum of weighted codebook capabilities such that a product of one of the one or more parameters associated with each of the plurality of codebooks and the processing weight associated with the corresponding codebook, summed for the plurality of codebooks, is less than the indicated cap.
  • Aspect 19 The method of Aspect 18, wherein the capability comprises at least one of a maximum number of resources to be configured for a particular codebook type, a maximum number of ports per resource to be configured for the particular codebook type, and a maximum number of total ports to be configured across the resources for the particular codebook type.
  • Aspect 20 The method of Aspect 19, wherein the indicated at least one cap comprises a first cap of a sum of weighted resources such that the product of a number of resources to be configured for each of the plurality of codebooks and the processing weight of the codebook, summed for the plurality of codebooks, is less than the indicated first cap, and a second cap of a sum of weighted ports such that the product of a number of ports to be configured for each of the plurality of codebooks and the processing weight of the codebook, summed for the plurality of codebooks, is less than the indicated second cap.
  • Aspect 21 The method of Aspect 19 or 20, further comprising transmitting an indication of a maximum total number of resources for the CSI-reporting such that the resources configured for the plurality of codebooks is less than the indicated maximum total number of resources.
  • Aspect 22 The method of any of Aspect 19-21, further comprising receiving an indication of a maximum total number of ports for the CSI-reporting such that the ports configured for the plurality of codebooks is less than the indicated maximum total number of ports.
  • Aspect 23 The method of any of Aspects 13-22, wherein the codebook combination comprises a combination of a first codebook for a first component carrier (CC) and a second codebook for a second CC.
  • the codebook combination comprises a combination of a first codebook for a first component carrier (CC) and a second codebook for a second CC.
  • Aspect 24 The method of any of Aspects 13-23, wherein the indication of the capability of the UE comprises a carrier index associated with each codebook of the codebook combination.
  • a method for wireless communication comprising receiving an indication of a capability of a user-equipment (UE) with respect to channel state information (CSI) -reporting, the capability of the UE being received for each of at least two codebooks to be processed by the UE, determining one or more parameters to be configured for the CSI-reporting based on the capability of the UE, and configuring the UE to perform the CSI-reporting using the determined one or more parameters, wherein the one or more parameters are determined by assuming that the capability of the UE with respect to a first codebook of the at least two codebooks is the same as a second codebook of the at least two codebooks, if the first codebook and the second codebook are to be configured for simultaneous processing by the UE, or configuring the UE to perform the CSI-reporting comprises avoiding configuring the UE to process the first codebook simultaneously with the second codebook.
  • UE user-equipment
  • CSI channel state information
  • Aspect 26 The method of Aspect 25, wherein the first codebook has a lower processing complexity at the UE as compared to the second codebook.
  • Aspect 27 The method of Aspect 25 or 26, wherein the second codebook comprises a third-generation partnership program (3GPP) release-16 type II CSI codebook, and wherein the second codebook comprises a 3GPP release-15 type II CSI codebook.
  • 3GPP third-generation partnership program
  • Aspect 28 The method of any of Aspects 25-27, wherein the indicated capability of the UE comprises at least one of a maximum number of resources to be configured for each of the at least two codebooks, a maximum number of ports per resource to be configured for each of the at least two codebooks, and a maximum number of total ports across the resources to be configured for each of the at least two codebooks.
  • Aspect 29 The method of Aspect 28, wherein if the first codebook and the second codebook are to be configured for simultaneous processing by the UE, the one or more parameters comprises at least one of a number of resources to be configured for each of the first and the second codebook such that a sum of the resources configured for the first and the second codebook is less than the a maximum number of resources to be configured for the second codebook, or a number of ports to be configured for each of the first codebook and the second codebook such that a sum of the ports configured for the first and the second codebook is less than the maximum number of ports to be configured for the second codebook.
  • a method for wireless communication by a user-equipment comprising determining a capability of the UE with respect to channel state information (CSI) -reporting, the capability of the UE being received for each of at least two codebooks to be processed by the UE, transmitting an indication of the capability of the UE to a network entity, and receiving a configuration of one or more parameters for the CSI-reporting in accordance with the capability of the UE, wherein the capability is determined by expecting that the one or more parameters are to be configured by the network entity assuming that the capability of the UE with respect to a first codebook of the at least two codebooks is the same as a second codebook of the at least two codebooks, if the first codebook and the second codebook are to be configured for simultaneous processing by the UE, or the network entity is to avoid configuring the UE to process the first codebook simultaneously with the second codebook.
  • CSI channel state information
  • Aspect 31 The method of Aspect 30, wherein the first codebook has a lower processing complexity at the UE as compared to the second codebook.
  • Aspect 32 The method of Aspect 30 or 31, wherein the second codebook comprises a third-generation partnership program (3GPP) release-16 type II CSI codebook, and wherein the first codebook comprises a 3GPP release-15 type II CSI codebook.
  • 3GPP third-generation partnership program
  • Aspect 33 The method of any of Aspects 30-32, wherein the indicated capability of the UE comprises at least one of a maximum number of resources to be configured for each of the at least two codebooks, a maximum number of ports per resource to be configured for each of the at least two codebooks, and a maximum number of total ports across the resources to be configured for each of the at least two codebooks.
  • Aspect 34 The method of Aspect 33, wherein if the first codebook and the second codebook are to be configured for simultaneous processing by the UE, the indication of the capability is determined by expecting that a number of resources to be configured for each of the first and the second codebook are configured by the network entity such that a sum of the resources configured for the first and the second codebook is less than the a maximum number of resources to be configured for the second codebook, or a number of ports to be configured for each of the first codebook and the second codebook are configured by the network entity such that a sum of the ports configured for the first and the second codebook is less than the maximum number of ports to be configured for the second codebook.
  • a method for wireless communication comprising receiving an indication of a capability of a user-equipment (UE) with respect to channel state information (CSI) -reporting, determining one or more parameters associated with each of one or more CSI reports based on the capability of the UE, wherein the one or more parameters are determined based on a combination of codebooks or CSIs to be processed simultaneously by the UE, generating a CSI request for the one or more CSI reports, and transmitting the CSI request to the UE to perform the CSI-reporting using the determined one or more parameters.
  • UE user-equipment
  • CSI channel state information
  • Aspect 36 The method of Aspect 35, wherein determining the one or more parameters comprises determining that a maximum number of ports per resource among the simultaneously processed CSIs is smaller than or equal to a capability of a maximum number of ports per resource reported by the UE for each codebook of the simultaneously processed CSIs.
  • Aspect 37 The method of Aspect 36, wherein determining the one or more parameters comprises determining that a sum of a number of resources among the simultaneously processed CSIs is smaller than or equal to a capability of a maximum number of resources reported by the UE for a codebook of the simultaneously processed CSIs, wherein the capability of the maximum number of resources is associated with the capability of the maximum number of ports per resource.
  • Aspect 38 The method of Aspect 36 or 37, wherein determining the one or more parameters comprises determining that a sum of a number of total ports among the simultaneously processed CSIs is smaller than or equal to the capability of a maximum number of total ports reported by the UE for each codebook of the simultaneously processed CSIs, wherein the capability of the maximum number of total ports is associated with the capability of the maximum number of ports per resource.
  • Aspect 39 The method of any of Aspects 35-38, wherein the determination of the one or more parameters comprises determining that the one or more parameters meet the capability of the UE for a CSI having the most complexity among the simultaneously processed CSIs.
  • Aspect 40 The method of Aspect 39, wherein determining the one or more parameters further comprises at least one of determining that a sum of a number of resources across the simultaneously processed CSIs is smaller than or equal to the capability of the UE regarding a maximum number of resources of a codebook associated with the simultaneously processed CSIs having the most complexity, or determining that a sum of a number of total ports across the simultaneously processed CSIs is smaller than or equal to the capability of the UE regarding a maximum number of resources of the codebook associated with the simultaneously processed CSIs having the most complexity.
  • Aspect 41 The method of Aspect 39 or 40, wherein receiving the capability of the UE further comprises receiving a ranking of the complexity of the CSIs or codebooks, and the determination of the one or more parameters comprises determining that the one or more parameters meet the capability of the UE for the CSI having the most complexity based on the ranking.
  • Aspect 42 The method of any of Aspects 39-41, wherein the complexity of each CSI of the simultaneously processed CSIs is determined based on at least one of a type of the codebook associated with the CSI, a reported capability of a maximum number of ports per resource of the codebook, a reported capability of a number of resources of the codebook, or a reported capability of a number of ports of the codebook.
  • Aspect 43 The method of any of Aspects 39-42, wherein, if codebooks of the simultaneously processed CSI are of the same type, the CSI having a highest capability regarding a maximum number of ports per resource in the indicated capability is the CSI of the simultaneously processed CSI having the most complexity.
  • Aspect 44 The method of any of Aspects 39-43, wherein, if the codebooks of the simultaneously processed CSI are of different types, the CSI having a least capability regarding a maximum number of resources in the indicated capability is the CSI of the simultaneously processed CSIs having the most complexity.
  • Aspect 45 The method of any of Aspects 39-44, wherein, if the codebooks of the simultaneously processed CSIs are of different types and are associated with the same capability regarding a maximum number of resources, the CSI having a least capability regarding a maximum number of ports is the CSI of simultaneously processed CSIs having the most complexity.
  • Aspect 46 The method of any of Aspects 35-45, wherein the simultaneously processed CSI comprises a combination of CSIs for different component carriers, and the determination of the one or more parameters comprises determining the one or more parameters associated with each of the one or more CSI reports based on the capability of the UE for the different component carriers, wherein the one or more parameters are determined based on the combination of codebooks or CSIs to be processed simultaneously by the UE for the different component carriers.
  • Aspect 47 The method of any of Aspects 35-46, wherein the method further comprises receiving, from the UE, an explicit report of capability for simultaneously processing CSIs with same or different codebook types, and the determination of the one or more parameters comprises determining the one or more parameters for the simultaneously processed CSIs based on the explicit report if the capability for the simultaneously processed CSIs is included in the explicit report.
  • a method for wireless communication by a user-equipment comprising determining a capability of the UE with respect to channel state information (CSI) -reporting, transmitting an indication of the capability of the UE, receiving a CSI request for one or more CSI reports, the CSI request comprising a configuration of one or more parameters associated with each of the one or more CSI reports, and determining the one or more CSI reports by determining the one or more parameters are in accordance with the capability reported by the UE, wherein determining the one or more parameters is based on a combination of codebooks or CSIs to be processed simultaneously by the UE.
  • CSI channel state information
  • Aspect 49 The method of Aspect 48, wherein determining the one or more CSI reports comprises determining that a maximum number of ports per resource among the simultaneously processed CSIs is smaller than or equal to a capability of a maximum number of ports per resource reported by the UE for each codebook of the simultaneously processed CSIs.
  • Aspect 50 The method of Aspect 49, wherein determining the one or more CSI reports comprises determining that a sum of a number of resources among the simultaneously processed CSIs is smaller than or equal to a capability of a maximum number of resources reported by the UE for a codebook of the simultaneously processed CSIs, wherein the capability of the maximum number of resources is associated with the capability of the maximum number of ports per resource.
  • Aspect 51 The method of Aspect 49 or 50, wherein determining the one or more CSI reports comprises determining that a sum of a number of total ports among the simultaneously processed CSIs is smaller than or equal to the capability of a maximum number of total ports reported by the UE for each codebook of the simultaneously processed CSIs, wherein the capability of the maximum number of total ports is associated with the capability of the maximum number of ports per resource.
  • Aspect 52 The method of any of Aspects 48-51, wherein the determining the one or more CSI reports comprises determining that the one or more parameters meet the capability of the UE for a CSI having the most complexity among the simultaneously processed CSIs.
  • Aspect 53 The method of Aspect 52, wherein determining the one or more CSI reports comprises at least one of determining that a sum of a number of resources across the simultaneously processed CSIs is smaller than or equal to the capability of the UE regarding a maximum number of resources of a codebook associated with the simultaneously processed CSIs having the most complexity, or determining that a sum of a number of total ports across the simultaneously processed CSIs is smaller than or equal to the capability of the UE regarding a maximum number of resources of the codebook associated with the simultaneously processed CSIs having the most complexity.
  • Aspect 54 The method of Aspect 52 or 53, wherein transmitting the indication of the capability of the UE further comprises transmitting a ranking of the complexity of the CSIs or codebooks, and determining the one or more CSI reports comprises determining that the one or more parameters meet the capability of the UE for the CSI having the most complexity based on the ranking.
  • Aspect 55 The method of any of Aspects 52-54, wherein the complexity of each CSI of the simultaneously processed CSIs is determined based on at least one of a type of the codebook associated with the CSI, a reported capability of a maximum number of ports per resource of the codebook, a reported capability of a number of resources of the codebook, or a reported capability of a number of ports of the codebook.
  • Aspect 56 The method of any of Aspects 52-55, wherein, if codebooks of the simultaneously processed CSI are of the same type, the CSI having a highest capability regarding a maximum number of ports per resource in the indicated capability is the CSI of the simultaneously processed CSI having the most complexity.
  • Aspect 57 The method of any of Aspects 52-56, wherein, if the codebooks of the simultaneously processed CSI are of different types, the CSI having a least capability regarding a maximum number of resources in the indicated capability is the CSI of the simultaneously processed CSIs having the most complexity.
  • Aspect 58 The method of any of Aspects 52-57, wherein, if the codebooks of the simultaneously processed CSIs are of different types and are associated with the same capability regarding a maximum number of resources, the CSI having a least capability regarding a maximum number of ports is the CSI of simultaneously processed CSIs having the most complexity.
  • Aspect 59 The method of any one of Aspects 48-58, wherein the simultaneously processed CSI comprises a combination of CSIs for different component carriers, and the determination of the one or more CSI reports comprises determining the one or more parameters based on the capability reported by the UE for different component carriers, wherein determining the one or more parameters is based on the combination of codebooks or CSIs to be processed simultaneously by the UE for different component carriers
  • Aspect 60 The method of any of Aspects 48-59, wherein the method further comprises transmitting, from the UE, an explicit report of capability for simultaneously processing CSIs with same or different codebook types, and determining the one or more CSI reports comprises validating the one or more parameters for the simultaneously processed CSIs based on the explicit report if the capability for the simultaneously processed CSIs is included in the explicit report.
  • each codebook combination may include any suitable quantity of codebooks.
  • a codebook combination may include two or three codebooks in some implementations.
  • NR e.g., 5G NR
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • CDMA code division multiple access
  • TDMA time division multiple access
  • FDMA frequency division multiple access
  • OFDMA orthogonal frequency division multiple access
  • SC-FDMA single-carrier frequency division multiple access
  • TD-SCDMA time division synchronous code division multiple access
  • a CDMA network may implement a radio technology such as Universal Terrestrial Radio Access (UTRA) , cdma2000, etc.
  • UTRA Universal Terrestrial Radio Access
  • UTRA includes Wideband CDMA (WCDMA) and other variants of CDMA.
  • cdma2000 covers IS-2000, IS-95 and IS-856 standards.
  • a TDMA network may implement a radio technology such as Global System for Mobile Communications (GSM) .
  • GSM Global System for Mobile Communications
  • An OFDMA network may implement a radio technology such as NR (e.g. 5G RA) , Evolved UTRA (E-UTRA) , Ultra Mobile Broadband (UMB) , IEEE 802.11 (Wi-Fi) , IEEE 802.16 (WiMAX) , IEEE 802.20, Flash-OFDMA, etc.
  • NR e.g. 5G RA
  • E-UTRA Evolved UTRA
  • UMB Ultra Mobile Broadband
  • IEEE 802.11 Wi-Fi
  • IEEE 802.16 WiMAX
  • IEEE 802.20 Flash-OFDMA
  • UTRA and E-UTRA are part of Universal Mobile Telecommunication System (UMTS) .
  • LTE and LTE-A are releases of UMTS that use E-UTRA.
  • UTRA, E-UTRA, UMTS, LTE, LTE-A and GSM are described in documents from an organization named “3rd Generation Partnership Project” (3GPP) .
  • cdma2000 and UMB are described in documents from an organization named “3rd Generation Partnership Project 2” (3GPP2) .
  • NR is an emerging wireless communications technology under development.
  • the term “cell” can refer to a coverage area of a Node B (NB) and/or a NB subsystem serving this coverage area, depending on the context in which the term is used.
  • NB Node B
  • BS next generation NodeB
  • AP access point
  • DU distributed unit
  • TRP transmission reception point
  • a BS may provide communication coverage for a macro cell, a pico cell, a femto cell, and/or other types of cells.
  • a macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs with service subscription.
  • a pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscription.
  • a femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by UEs having an association with the femto cell (e.g., UEs in a Closed Subscriber Group (CSG) , UEs for users in the home, etc. ) .
  • a BS for a macro cell may be referred to as a macro BS.
  • a BS for a pico cell may be referred to as a pico BS.
  • a BS for a femto cell may be referred to as a femto BS or a home BS.
  • a UE may also be referred to as a mobile station, a terminal, an access terminal, a subscriber unit, a station, a Customer Premises Equipment (CPE) , a cellular phone, a smart phone, a personal digital assistant (PDA) , a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet computer, a camera, a gaming device, a netbook, a smartbook, an ultrabook, an appliance, a medical device or medical equipment, a biometric sensor/device, a wearable device such as a smart watch, smart clothing, smart glasses, a smart wrist band, smart jewelry (e.g., a smart ring, a smart bracelet, etc.
  • CPE Customer Premises Equipment
  • PDA personal digital assistant
  • WLL wireless local loop
  • MTC machine-type communication
  • eMTC evolved MTC
  • MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., that may communicate with a BS, another device (e.g., remote device) , or some other entity.
  • a wireless node may provide, for example, connectivity for or to a network (e.g., a wide area network such as Internet or a cellular network) via a wired or wireless communication link.
  • a network e.g., a wide area network such as Internet or a cellular network
  • Some UEs may be considered Internet-of-Things (IoT) devices, which may be narrowband IoT (NB-IoT) devices.
  • IoT Internet-of-Things
  • NB-IoT narrowband IoT
  • Certain wireless networks utilize orthogonal frequency division multiplexing (OFDM) on the downlink and single-carrier frequency division multiplexing (SC-FDM) on the uplink.
  • OFDM and SC-FDM partition the system bandwidth into multiple (K) orthogonal subcarriers, which are also commonly referred to as tones, bins, etc.
  • K orthogonal subcarriers
  • Each subcarrier may be modulated with data.
  • modulation symbols are sent in the frequency domain with OFDM and in the time domain with SC-FDM.
  • the spacing between adjacent subcarriers may be fixed, and the total number of subcarriers (K) may be dependent on the system bandwidth.
  • the spacing of the subcarriers may be 15 kHz and the minimum resource allocation (called a “resource block” (RB) ) may be 12 subcarriers (or 180 kHz) . Consequently, the nominal Fast Fourier Transfer (FFT) size may be equal to 128, 256, 512, 1024 or 2048 for system bandwidth of 1.25, 2.5, 5, 10, or 20 megahertz (MHz) , respectively.
  • the system bandwidth may also be partitioned into subbands. For example, a subband may cover 1.8 MHz (e.g., 6 RBs) , and there may be 1, 2, 4, 8, or 16 subbands for system bandwidth of 1.25, 2.5, 5, 10 or 20 MHz, respectively.
  • the basic transmission time interval (TTI) or packet duration is the 1 ms subframe.
  • NR may utilize OFDM with a CP on the uplink and downlink and include support for half-duplex operation using TDD.
  • a subframe is still 1 ms, but the basic TTI is referred to as a slot.
  • a subframe contains a variable number of slots (e.g., 1, 2, 4, 8, 16, ...slots) depending on the subcarrier spacing.
  • the NR RB is 12 consecutive frequency subcarriers.
  • NR may support a base subcarrier spacing of 15 KHz and other subcarrier spacing may be defined with respect to the base subcarrier spacing, for example, 30 kHz, 60 kHz, 120 kHz, 240 kHz, etc.
  • the symbol and slot lengths scale with the subcarrier spacing.
  • the CP length also depends on the subcarrier spacing. Beamforming may be supported and beam direction may be dynamically configured. MIMO transmissions with precoding may also be supported. In some examples, MIMO configurations in the DL may support up to 8 transmit antennas with multi-layer DL transmissions up to 8 streams and up to 2 streams per UE. In some examples, multi-layer transmissions with up to 2 streams per UE may be supported. Aggregation of multiple cells may be supported with up to 8 serving cells.
  • a scheduling entity (e.g., a BS) allocates resources for communication among some or all devices and equipment within its service area or cell.
  • the scheduling entity may be responsible for scheduling, assigning, reconfiguring, and releasing resources for one or more subordinate entities. That is, for scheduled communication, subordinate entities utilize resources allocated by the scheduling entity.
  • Base stations are not the only entities that may function as a scheduling entity.
  • a UE may function as a scheduling entity and may schedule resources for one or more subordinate entities (e.g., one or more other UEs) , and the other UEs may utilize the resources scheduled by the UE for wireless communication.
  • a UE may function as a scheduling entity in a peer-to-peer (P2P) network, and/or in a mesh network.
  • P2P peer-to-peer
  • UEs may communicate directly with one another in addition to communicating with a scheduling entity.
  • two or more subordinate entities may communicate with each other using sidelink signals.
  • Real-world applications of such sidelink communications may include public safety, proximity services, UE-to-network relaying, vehicle-to-vehicle (V2V) communications, Internet of Everything (IoE) communications, IoT communications, mission-critical mesh, and/or various other suitable applications.
  • a sidelink signal may refer to a signal communicated from one subordinate entity (e.g., UE1) to another subordinate entity (e.g., UE2) without relaying that communication through the scheduling entity (e.g., UE or BS) , even though the scheduling entity may be utilized for scheduling and/or control purposes.
  • the sidelink signals may be communicated using a licensed spectrum (unlike wireless local area networks, which typically use an unlicensed spectrum) .
  • the methods disclosed herein comprise one or more steps or actions for achieving the methods.
  • the method steps and/or actions may be interchanged with one another without departing from the scope of the claims.
  • the order and/or use of specific steps and/or actions may be modified without departing from the scope of the claims.
  • a phrase referring to “at least one of” a list of items refers to any combination of those items, including single members.
  • “at least one of: a, b, or c” is intended to cover a, b, c, a-b, a-c, b-c, and a-b-c, as well as any combination with multiples of the same element (e.g., a-a, a-a-a, a-a-b, a-a-c, a-b-b, a-c-c, b-b, b-b-b, b-b-c, c-c, and c-c-c or any other ordering of a, b, and c) .
  • determining encompasses a wide variety of actions. For example, “determining” may include calculating, computing, processing, deriving, investigating, looking up (e.g., looking up in a table, a database or another data structure) , ascertaining and the like. Also, “determining” may include receiving (e.g., receiving information) , accessing (e.g., accessing data in a memory) and the like. Also, “determining” may include resolving, selecting, choosing, establishing and the like.
  • the various operations of methods described above may be performed by any suitable means capable of performing the corresponding functions.
  • the means may include various hardware and/or software component (s) and/or module (s) , including, but not limited to a circuit, an application specific integrated circuit (ASIC) , or processor.
  • ASIC application specific integrated circuit
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • PLD programmable logic device
  • a general-purpose processor may be a microprocessor, but in the alternative, the processor may be any commercially available processor, controller, microcontroller, or state machine.
  • a processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.
  • an example hardware configuration may comprise a processing system in a wireless node.
  • the processing system may be implemented with a bus architecture.
  • the bus may include any number of interconnecting buses and bridges depending on the specific application of the processing system and the overall design constraints.
  • the bus may link together various circuits including a processor, machine-readable media, and a bus interface.
  • the bus interface may be used to connect a network adapter, among other things, to the processing system via the bus.
  • the network adapter may be used to implement the signal processing functions of the PHY layer.
  • a user interface e.g., keypad, display, mouse, joystick, etc.
  • a user interface e.g., keypad, display, mouse, joystick, etc.
  • the bus may also link various other circuits such as timing sources, peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further.
  • the processor may be implemented with one or more general-purpose and/or special-purpose processors. Examples include microprocessors, microcontrollers, DSP processors, and other circuitry that can execute software. Those skilled in the art will recognize how best to implement the described functionality for the processing system depending on the particular application and the overall design constraints imposed on the overall system.
  • the functions may be stored or transmitted over as one or more instructions or code on a computer readable medium.
  • Software shall be construed broadly to mean instructions, data, or any combination thereof, whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.
  • Computer-readable media include both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another.
  • the processor may be responsible for managing the bus and general processing, including the execution of software modules stored on the machine-readable storage media.
  • a computer-readable storage medium may be coupled to a processor such that the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor.
  • the machine-readable media may include a transmission line, a carrier wave modulated by data, and/or a computer readable storage medium with instructions stored thereon separate from the wireless node, all of which may be accessed by the processor through the bus interface.
  • the machine-readable media, or any portion thereof may be integrated into the processor, such as the case may be with cache and/or general register files.
  • machine-readable storage media may include, by way of example, RAM (Random Access Memory) , flash memory, ROM (Read Only Memory) , PROM (Programmable Read-Only Memory) , EPROM (Erasable Programmable Read-Only Memory) , EEPROM (Electrically Erasable Programmable Read-Only Memory) , registers, magnetic disks, optical disks, hard drives, or any other suitable storage medium, or any combination thereof.
  • RAM Random Access Memory
  • ROM Read Only Memory
  • PROM Programmable Read-Only Memory
  • EPROM Erasable Programmable Read-Only Memory
  • EEPROM Electrical Erasable Programmable Read-Only Memory
  • registers magnetic disks, optical disks, hard drives, or any other suitable storage medium, or any combination thereof.
  • the machine-readable media may be embodied in a computer-program product.
  • a software module may comprise a single instruction, or many instructions, and may be distributed over several different code segments, among different programs, and across multiple storage media.
  • the computer-readable media may comprise a number of software modules.
  • the software modules include instructions that, when executed by an apparatus such as a processor, cause the processing system to perform various functions.
  • the software modules may include a transmission module and a receiving module. Each software module may reside in a single storage device or be distributed across multiple storage devices.
  • a software module may be loaded into RAM from a hard drive when a triggering event occurs.
  • the processor may load some of the instructions into cache to increase access speed.
  • One or more cache lines may then be loaded into a general register file for execution by the processor.
  • any connection is properly termed a computer-readable medium.
  • the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) , or wireless technologies such as infrared (IR) , radio, and microwave
  • the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium.
  • Disk and disc include compact disc (CD) , laser disc, optical disc, digital versatile disc (DVD) , floppy disk, and disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers.
  • computer-readable media may comprise non-transitory computer-readable media (e.g., tangible media) .
  • computer-readable media may comprise transitory computer-readable media (e.g., a signal) . Combinations of the above should also be included within the scope of computer-readable media.
  • certain aspects may comprise a computer program product for performing the operations presented herein.
  • a computer program product may comprise a computer-readable medium having instructions stored (and/or encoded) thereon, the instructions being executable by one or more processors to perform the operations described herein, for example, instructions for performing the operations described herein.
  • modules and/or other appropriate means for performing the methods and techniques described herein can be downloaded and/or otherwise obtained by a user terminal and/or base station as applicable.
  • a user terminal and/or base station can be coupled to a server to facilitate the transfer of means for performing the methods described herein.
  • various methods described herein can be provided via storage means (e.g., RAM, ROM, a physical storage medium such as a compact disc (CD) or floppy disk, etc. ) , such that a user terminal and/or base station can obtain the various methods upon coupling or providing the storage means to the device.
  • storage means e.g., RAM, ROM, a physical storage medium such as a compact disc (CD) or floppy disk, etc.
  • CD compact disc
  • floppy disk etc.
  • any other suitable technique for providing the methods and techniques described herein to a device can be utilized.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Mobile Radio Communication Systems (AREA)
PCT/CN2020/109174 2019-08-14 2020-08-14 User-equipment (ue) capability signaling WO2021027920A1 (en)

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CNPCT/CN2019/100518 2019-08-14
PCT/CN2019/100518 WO2021026798A1 (en) 2019-08-14 2019-08-14 User-equipment (ue) capability signaling for codebook combinations
PCT/CN2019/109823 WO2021027042A1 (en) 2019-08-14 2019-10-04 User-equipment (ue) capability signaling for codebook combinations
CNPCT/CN2019/109823 2019-10-04
PCT/CN2019/116581 WO2021087948A1 (en) 2019-11-08 2019-11-08 User-equipment (ue) capability signaling
CNPCT/CN2019/116581 2019-11-08

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024065610A1 (en) * 2022-09-30 2024-04-04 Qualcomm Incorporated Reporting of channel state information subband index capability

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023240572A1 (zh) * 2022-06-16 2023-12-21 北京小米移动软件有限公司 一种信息传输方法、装置、通信设备及存储介质

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107431522A (zh) * 2015-04-10 2017-12-01 Lg 电子株式会社 在无线通信系统中报告信道状态信息的方法及其设备
EP3255813A1 (en) * 2015-02-05 2017-12-13 LG Electronics Inc. Method for csi feedback in wireless communication system, and apparatus therefor
WO2018171662A1 (en) * 2017-03-23 2018-09-27 Qualcomm Incorporated Differential channel state information (csi) reporting for higher resolution csi
CN109644039A (zh) * 2016-09-01 2019-04-16 三星电子株式会社 用于下行链路和上行链路信道状态信息获取的方法和设备

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3255813A1 (en) * 2015-02-05 2017-12-13 LG Electronics Inc. Method for csi feedback in wireless communication system, and apparatus therefor
CN107431522A (zh) * 2015-04-10 2017-12-01 Lg 电子株式会社 在无线通信系统中报告信道状态信息的方法及其设备
CN109644039A (zh) * 2016-09-01 2019-04-16 三星电子株式会社 用于下行链路和上行链路信道状态信息获取的方法和设备
WO2018171662A1 (en) * 2017-03-23 2018-09-27 Qualcomm Incorporated Differential channel state information (csi) reporting for higher resolution csi

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
HUAWEI, HISILICON: "Summary of remaining issues on CSI reporting", 3GPP DRAFT; R1-1805950, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Busan, Korea; 20180521 - 20180525, 20 May 2018 (2018-05-20), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051441169 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024065610A1 (en) * 2022-09-30 2024-04-04 Qualcomm Incorporated Reporting of channel state information subband index capability

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