WO2025035470A1 - Procédé, dispositif et support de stockage informatique de communication - Google Patents

Procédé, dispositif et support de stockage informatique de communication Download PDF

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Publication number
WO2025035470A1
WO2025035470A1 PCT/CN2023/113624 CN2023113624W WO2025035470A1 WO 2025035470 A1 WO2025035470 A1 WO 2025035470A1 CN 2023113624 W CN2023113624 W CN 2023113624W WO 2025035470 A1 WO2025035470 A1 WO 2025035470A1
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WIPO (PCT)
Prior art keywords
vectors
value
dimension
csi
vector
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PCT/CN2023/113624
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English (en)
Inventor
Yukai GAO
Peng Guan
Gang Wang
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NEC Corp
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NEC Corp
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Priority to PCT/CN2023/113624 priority Critical patent/WO2025035470A1/fr
Publication of WO2025035470A1 publication Critical patent/WO2025035470A1/fr
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0094—Indication of how sub-channels of the path are allocated

Definitions

  • Embodiments of the present disclosure generally relate to the field of telecommunication, and in particular, to methods, devices and computer storage media of communication for channel state information (CSI) .
  • CSI channel state information
  • MIMO multi-input multi-output
  • MIMO includes features that facilitate utilization of a large number of antenna elements at base station for both sub-6GHz and over-6GHz frequency bands.
  • a plurality of antennas at a transmitter and/or receiver can be used to achieve array and diversity gain instead of capacity gain.
  • CSI channel state information
  • This information describes how a signal propagates from the transmitter to the receiver and represents the combined effect of, for example, scattering, fading, and power decay with distance.
  • the method is called Channel estimation.
  • the CSI makes it possible to adapt transmissions to current channel conditions, which is crucial for achieving reliable communication with high data rates in multi-antenna systems. Therefore, CSI enhancement is worth studying.
  • embodiments of the present disclosure provide a solution on transmitting a measurement report.
  • a terminal device comprising: a processor, configured to cause the terminal device to: receive, from a network device, at least one configuration for a measurement report, wherein the at least one configuration comprises a first plurality of reference signal resources, a first value in a first dimension and a first value in a second dimension; and transmit, to the network device, the measurement report based on the at least one configuration, wherein the measurement report comprises a first plurality of first vectors and a second plurality of second vectors, wherein each first vector is based on the first value in the first dimension and the first value in the second dimension, each second vector is based on a second value in the first dimension and a second value in the second dimension, and the second plurality of second vectors is based on the first plurality of first vectors.
  • a network device comprising: a processor, configured to cause the network device to: transmit, to a terminal device, at least one configuration for a measurement report, wherein the at least one configuration comprises a first plurality of reference signal resources, a first value in a first dimension and a first value in a second dimension; and receive, from the terminal device, the measurement report based on the at least one configuration, wherein the measurement report comprises a first plurality of first vectors and a second plurality of second vectors, wherein each first vector is based on the first value in the first dimension and the first value in the second dimension, each second vector is based on a second value in the first dimension and a second value in the second dimension, and the second plurality of second vectors is based on the first plurality of first vectors.
  • a communication method performed by a terminal device.
  • the method comprises: receiving, from a network device, at least one configuration for a measurement report, wherein the at least one configuration comprises a first plurality of reference signal resources, a first value in a first dimension and a first value in a second dimension; and transmitting, to the network device, the measurement report based on the at least one configuration, wherein the measurement report comprises a first plurality of first vectors and a second plurality of second vectors, wherein each first vector is based on the first value in the first dimension and the first value in the second dimension, each second vector is based on a second value in the first dimension and a second value in the second dimension, and the second plurality of second vectors is based on the first plurality of first vectors.
  • a communication method performed by a network device.
  • the method comprises: transmitting, to a terminal device, at least one configuration for a measurement report, wherein the at least one configuration comprises a first plurality of reference signal resources, a first value in a first dimension and a first value in a second dimension; and receiving, from the terminal device, the measurement report based on the at least one configuration, wherein the measurement report comprises a first plurality of first vectors and a second plurality of second vectors, wherein each first vector is based on the first value in the first dimension and the first value in the second dimension, each second vector is based on a second value in the first dimension and a second value in the second dimension, and the second plurality of second vectors is based on the first plurality of first vectors.
  • a computer readable medium having instructions stored thereon, the instructions, when executed on at least one processor, causing the at least one processor to carry out the method according to the third, or fourth aspect.
  • FIG. 1 is a schematic diagram of a communication environment in which embodiments of the present disclosure can be implemented
  • FIG. 2 illustrates a signaling flow for communications according to some embodiments of the present disclosure
  • FIG. 3A to FIG. 3C illustrate schematic diagrams of CSI-RS resource patterns, respectively;
  • FIG. 4A and FIG. 4B illustrate schematic diagrams of CSI-RS resource patterns, respectively;
  • FIG. 5AA to FIG. 5HD illustrate schematic diagrams of CSI-RS resource patterns, respectively;
  • FIG. 6 illustrates a signaling flow of transmitting a measurement report in accordance with some embodiments of the present disclosure
  • FIG. 7A to FIG. 7C illustrate schematic diagrams of vectors, respectively
  • FIG. 8 illustrates a schematic diagram of CSI-RE resource pattern
  • FIG. 9 illustrates a flowchart of a method implemented at a terminal device, according to some example embodiments of the present disclosure.
  • FIG. 10 illustrates a flowchart of a method implemented at a network device, according to some example embodiments of the present disclosure
  • FIG. 11 illustrates a flowchart of a method implemented at a terminal device, according to some example embodiments of the present disclosure
  • FIG. 12 illustrates a flowchart of a method implemented at a network device, according to some example embodiments of the present disclosure
  • FIG. 13 illustrates a simplified block diagram of an apparatus that is suitable for implementing example embodiments of the present disclosure.
  • terminal device refers to any device having wireless or wired communication capabilities.
  • the terminal device include, but not limited to, user equipment (UE) , personal computers, desktops, mobile phones, cellular phones, smart phones, personal digital assistants (PDAs) , portable computers, tablets, wearable devices, internet of things (IoT) devices, Ultra-reliable and Low Latency Communications (URLLC) devices, Internet of Everything (IoE) devices, machine type communication (MTC) devices, device on vehicle for V2X communication where X means pedestrian, vehicle, or infrastructure/network, devices for Integrated Access and Backhaul (IAB) , Space borne vehicles or Air borne vehicles in Non-terrestrial networks (NTN) including Satellites and High Altitude Platforms (HAPs) encompassing Unmanned Aircraft Systems (UAS) , eXtended Reality (XR) devices including different types of realities such as Augmented Reality (AR) , Mixed Reality (MR) and Virtual Reality (VR) , the unmanned aerial vehicle (UAV)
  • UE user equipment
  • the ‘terminal device’ can further has ‘multicast/broadcast’ feature, to support public safety and mission critical, V2X applications, transparent IPv4/IPv6 multicast delivery, IPTV, smart TV, radio services, software delivery over wireless, group communications and IoT applications. It may also incorporate one or multiple Subscriber Identity Module (SIM) as known as Multi-SIM.
  • SIM Subscriber Identity Module
  • the term “terminal device” can be used interchangeably with a UE, a mobile station, a subscriber station, a mobile terminal, a user terminal or a wireless device.
  • network device refers to a device which is capable of providing or hosting a cell or coverage where terminal devices can communicate.
  • a network device include, but not limited to, a Node B (NodeB or NB) , an evolved NodeB (eNodeB or eNB) , a next generation NodeB (gNB) , a transmission reception point (TRP) , a remote radio unit (RRU) , a radio head (RH) , a remote radio head (RRH) , an IAB node, a low power node such as a femto node, a pico node, a reconfigurable intelligent surface (RIS) , and the like.
  • NodeB Node B
  • eNodeB or eNB evolved NodeB
  • gNB next generation NodeB
  • TRP transmission reception point
  • RRU remote radio unit
  • RH radio head
  • RRH remote radio head
  • IAB node a low power node such as a fe
  • the terminal device or the network device may have Artificial intelligence (AI) or Machine learning capability. It generally includes a model which has been trained from numerous collected data for a specific function, and can be used to predict some information.
  • AI Artificial intelligence
  • Machine learning capability it generally includes a model which has been trained from numerous collected data for a specific function, and can be used to predict some information.
  • the terminal or the network device may work on several frequency ranges, e.g. FR1 (910 MHz to 7125 MHz) , FR2 (24.25GHz to 71GHz) , FR2-2 (52.6GHz to 71GHz) , frequency band larger than 100GHz as well as Tera Hertz (THz) . It can further work on licensed/unlicensed/shared spectrum.
  • the terminal device may have more than one connection with the network devices under Multi-Radio Dual Connectivity (MR-DC) application scenario.
  • MR-DC Multi-Radio Dual Connectivity
  • the terminal device or the network device can work on full duplex, flexible duplex and cross division duplex modes.
  • test equipment e.g. signal generator, signal analyzer, spectrum analyzer, network analyzer, test terminal device, test network device, channel emulator.
  • the terminal device may be connected with a first network device and a second network device.
  • One of the first network device and the second network device may be a master node and the other one may be a secondary node.
  • the first network device and the second network device may use different radio access technologies (RATs) .
  • the first network device may be a first RAT device and the second network device may be a second RAT device.
  • the first RAT device is eNB and the second RAT device is gNB.
  • Information related with different RATs may be transmitted to the terminal device from at least one of the first network device or the second network device.
  • first information may be transmitted to the terminal device from the first network device and second information may be transmitted to the terminal device from the second network device directly or via the first network device.
  • information related with configuration for the terminal device configured by the second network device may be transmitted from the second network device via the first network device.
  • Information related with reconfiguration for the terminal device configured by the second network device may be transmitted to the terminal device from the second network device directly or via the first network device.
  • the singular forms ‘a’ , ‘an’ and ‘the’ are intended to include the plural forms as well, unless the context clearly indicates otherwise.
  • the term ‘includes’ and its variants are to be read as open terms that mean ‘includes, but is not limited to. ’
  • the term ‘based on’ is to be read as ‘at least in part based on. ’
  • the term ‘one embodiment’ and ‘an embodiment’ are to be read as ‘at least one embodiment. ’
  • the term ‘another embodiment’ is to be read as ‘at least one other embodiment. ’
  • the terms ‘first, ’ ‘second, ’ and the like may refer to different or same objects. Other definitions, explicit and implicit, may be included below.
  • values, procedures, or apparatus are referred to as ‘best, ’ ‘lowest, ’ ‘highest, ’ ‘minimum, ’ ‘maximum, ’ or the like. It will be appreciated that such descriptions are intended to indicate that a selection among many used functional alternatives can be made, and such selections need not be better, smaller, higher, or otherwise preferable to other selections.
  • the term “resource, ” “transmission resource, ” “uplink resource, ” or “downlink resource” may refer to any resource for performing a communication, such as a resource in time domain, a resource in frequency domain, a resource in space domain, a resource in code domain, or any other resource enabling a communication, and the like.
  • a resource in both frequency domain and time domain will be used as an example of a transmission resource for describing some example embodiments of the present disclosure. It is noted that example embodiments of the present disclosure are equally applicable to other resources in other domains.
  • the term “Channel State Information (CSI) ” used herein may refer to channel properties of a communication link. CSI describes how a signal propagate from the transmitter to the receiver and represents the combined effect of, for example, scattering, fading, and power decay with distance.
  • the term “CSI report” may refer to a report that indicate how good or bad the channel is.
  • FIG. 1 illustrates a schematic diagram of an example communication network 100 in which some embodiments of the present disclosure can be implemented.
  • the communication network 100 may include a terminal device 110 and a network device 120.
  • the network device 120 may provide a cell 102 to serve one or more terminal devices.
  • the terminal device 110 is located in the cell 102 and is served by the network device 120.
  • the terminal device 110 may be a UE and the network device 120 may be a base station serving the UE.
  • the serving area of the network device 120 may be called a cell 102.
  • the network device 120 may be configured with at least one of four TRPs/panels 130-1, 130-2, 130-3 and 130-4 (collectively referred to as TRPs 130 or individually referred to as TRP 130) .
  • TRPs 130 or individually referred to as TRP 130
  • the network 100 may include any suitable number of devices adapted for implementing embodiments of the present disclosure.
  • one or more additional devices may be located in the cell 102, and one or more additional cells may be deployed in the communication environment 100.
  • the network device 120 may be another device than a network device.
  • the terminal device 110 may be other device than a terminal device.
  • the term “TRP” refers to an antenna array (with one or more antenna elements) available to the network device located at a specific geographical location.
  • a network device may be coupled with multiple TRPs in different geographical locations to achieve better coverage.
  • a network device may be implemented with multiple panels or multiple groups of antenna ports/elements in same geographical location.
  • the TRP can also be referred to as a “panel” , which also refers to an antenna array (with one or more antenna elements) or a group of antennas.
  • terminal device 110 operating as a UE
  • network device 120 operating as a base station
  • operations described in connection with a terminal device may be implemented at a network device or other device
  • operations described in connection with a network device may be implemented at a terminal device or other device.
  • a link from the network device 120 to the terminal device 110 is referred to as a downlink (DL)
  • a link from the terminal device 110 to the network device 120 is referred to as an uplink (UL)
  • the network device 120 is a transmitting (TX) device (or a transmitter)
  • the terminal device 110 is a receiving (RX) device (or a receiver)
  • the terminal device 110 is a TX device (or a transmitter) and the network device 120 is a RX device (or a receiver) .
  • the terminal device 110 and the network device 120 may communicate with each other via a channel such as a wireless communication channel on an air interface (e.g., Uu interface) .
  • the wireless communication channel may comprise a physical uplink control channel (PUCCH) , a physical uplink shared channel (PUSCH) , a physical random-access channel (PRACH) , a physical downlink control channel (PDCCH) , a physical downlink shared channel (PDSCH) and a physical broadcast channel (PBCH) .
  • PUCCH physical uplink control channel
  • PUSCH physical uplink shared channel
  • PRACH physical random-access channel
  • PDCCH physical downlink control channel
  • PDSCH physical downlink shared channel
  • PBCH physical broadcast channel
  • any other suitable channels are also feasible.
  • the communications in the communication network 100 may conform to any suitable standards including, but not limited to, Global System for Mobile Communications (GSM) , Long Term Evolution (LTE) , LTE-Evolution, LTE-Advanced (LTE-A) , New Radio (NR) , Wideband Code Division Multiple Access (WCDMA) , Code Division Multiple Access (CDMA) , GSM EDGE Radio Access Network (GERAN) , Machine Type Communication (MTC) and the like.
  • GSM Global System for Mobile Communications
  • LTE Long Term Evolution
  • LTE-Evolution LTE-Advanced
  • NR New Radio
  • WCDMA Wideband Code Division Multiple Access
  • CDMA Code Division Multiple Access
  • GERAN GSM EDGE Radio Access Network
  • MTC Machine Type Communication
  • Examples of the communication protocols include, but not limited to, the first generation (1G) , the second generation (2G) , 2.5G, 2.75G, the third generation (3G) , the fourth generation (4G) , 4.5G, the fifth generation (5G) communication protocols, 5.5G, 5G-Advanced networks, or the sixth generation (6G) networks.
  • the network device 120 may communicate with the terminal device 110 via at least one of the TRPs/panels 130-1, 130-2, 130-3 and 130-4.
  • the TRP/panel 130-1 may be also referred to as the first TRP/panel
  • the TRP/panel 130-2 may be also referred to as the second TRP/panel
  • the TRP/panel 130-3 may be also referred to as the third TRP/panel
  • the TRP/panel 130-4 may be also referred to as the fourth TRP/panel.
  • Each of the TRPs/panels 130 may provide a plurality of beams for communication with the terminal device 110. It is noted that the number of TRPs/panels shown in FIG. 1 is only an example not limitation.
  • the first TRP/panel and/or the second TRP/panel and/or the third TRP/panel and/or the fourth TRP/panel may be explicitly associated with different higher-layer configured identities.
  • a higher-layer configured identity can be associated with a Control Resource Set (CORESET) , a reference signal (RS) , a reference signal resource, a group of ports of a reference signal resource or a Transmission Configuration Indication (TCI) state, which is used to differentiate between transmissions between different TRPs/panels 130 and the terminal device 110.
  • CORESET Control Resource Set
  • RS reference signal
  • TCI Transmission Configuration Indication
  • the network device 120 may transmit control information associated with the transmission of the data.
  • the control information can schedule a set of resources for the transmission of the data and indicate various transmission parameters related to the transmission of the data, such as, one or more TCI states, a Frequency Domain Resource Assignment (FDRA) , a Time Domain Resource Assignment (TDRA) which may include a slot offset and a start/length indicator value, a Demodulation Reference Signal (DMRS) group, a Redundancy Version (RV) , as defined in the 3GPP specifications.
  • FDRA Frequency Domain Resource Assignment
  • TDRA Time Domain Resource Assignment
  • DMRS Demodulation Reference Signal
  • RV Redundancy Version
  • precoding matrix In the context of the present application, the terms “precoding matrix” , “precoding” , “beam” , “beamforming” , “vector” , “first vector” , “first basis” , “first basis vector” , “second vector” , “second basis” , “second basis vector” , “third vector” , “third basis” , “third basis vector” , “codebook” and “precoder” may be used interchangeably.
  • vector “bases” and “basis” can be used interchangeably.
  • one codebook subset restriction “one CBSR”
  • each one of the at least one codebook subset restriction “one of the at least one codebook subset restriction”
  • each one of the at least one CBSR “afirst bitmap” and “one of the at least one CBSR”
  • a first bitmap “one of the at least one CBSR”
  • index In the context of the present application, the terms “index” , “indicator” , “indication” , “field” , “bit field” and “bitmap” can be used interchangeably.
  • physical resource block , “resource block” , “PRB” and “RB” can be used interchangeably.
  • bit size “size of bits” , “number of bits” , “size of field” , “bitwidth” and “field size” can be used interchangeably.
  • frequency domain/FD basis vector In the context of the present application, the terms “frequency domain/FD basis vector” , “frequency domain/FD vector” , “frequency domain/FD basis” , “frequency domain/FD bases” , “frequency domain/FD basis vectors corresponding to a CSI-RS resource” , “frequency domain/FD vectors corresponding to a CSI-RS resource” , “frequency domain/FD basis corresponding to a CSI-RS resource” , “frequency domain/FD bases corresponding to a CSI-RS resource” , “frequency domain/FD vector corresponding to a first plurality of CSI-RS resources” and “frequency domain/FD vector corresponding to a second plurality of CSI-RS resources” can be used interchangeably.
  • the terms “doppler domain” , “time domain” , “TD” and “DD” can be used interchangeably.
  • a TRP In the context of the present application, the terms “a TRP” , “a TRP group” , “a CSI-RS resource” and “a group of CSI-RS ports” can be used interchangeably.
  • the terms “a first plurality of CSI-RS resources” and “a first plurality of groups of CSI-RS ports” can be used interchangeably.
  • the terms “a second plurality of CSI-RS resources” and “a second plurality of groups of CSI-RS ports” can be used interchangeably.
  • reporting In the context of the present application, the terms “reporting” , “report” and “feedback” can be used interchangeably. In the context of the present application, the terms “based on” , “correspond to” , “corresponding to” and “associated with” can be used interchangeably.
  • reference signal reference signal
  • RS reference signal resource
  • CSI-RS resource reference signal resource
  • CSI-RS ports reference signal ports
  • first value in a first dimension , “value of a first parameter” , “N 1 ” , “first number of antenna ports” and “first number of antenna ports in a first dimension” can be used interchangeably.
  • first value in a second dimension , “value of a second parameter” , “N 2 ” , “second number of antenna ports” and “first number of antenna ports in a second dimension” can be used interchangeably.
  • second value in a first dimension , “value of a third parameter” , “N 1, t ” , “third number of antenna ports” and “second number of antenna ports in a first dimension” can be used interchangeably.
  • second value in a second dimension , “value of a fourth parameter” , “N 2, t ” , “fourth number of antenna ports” and “second number of antenna ports in a second dimension” can be used interchangeably.
  • the terms “third value in a first dimension” , “value of a fifth parameter” , “N 1, s ” , “fifth number of antenna ports” and “third number of antenna ports in a first dimension” can be used interchangeably.
  • the terms “third value in a second dimension” , “value of a sixth parameter” , “N 2, s ” , “sixth number of antenna ports” and “third number of antenna ports in a second dimension” can be used interchangeably.
  • first number of CSI-RS resources corresponding to the first dimension “first number in the first dimension” , “first number of CSI-RS resources in the first dimension” , “first number corresponding to the first dimension” and “N t, 1 ” can be used interchangeably.
  • first number of CSI-RS resources corresponding to the second dimension “first number in the second dimension” , “first number corresponding to the second dimension” , “first number of CSI-RS resources in the second dimension” and “N t, 2 ” can be used interchangeably.
  • second number of CSI-RS resources corresponding to the first dimension can be used interchangeably.
  • second number of CSI-RS resources corresponding to the second dimension can be used interchangeably.
  • ports In the context of the present application, the terms “ports” , “antenna ports” , “CSI-RS ports” , “reference signal port” , “reference signal ports” , “port, “antenna port” and “CSI-RS port” can be used interchangeably.
  • CSI report In the context of the present application, the terms “CSI report” , “CSI reporting” , “CSI report setting” , “CSI feedback” , “codebook” , “codebook configuration” , “codebookConfig” , “precoding matrix indicator” , “PMI” , “PMI report” , “report of PMI” , “report of precoder” , “report of precoders” , “reporting of precoder” , “reporting of precoders” , “measurement report” and “CSI” can be used interchangeably.
  • first plurality of CSI-RS resources “afirst plurality of groups of CSI-RS ports” , “N t groups of CSI-RS ports” and “N t CSI-RS resources” can be used interchangeably.
  • second plurality of CSI-RS resources “asecond plurality of groups of CSI-RS ports” , “N s CSI-RS resources” and “N s groups of CSI-RS ports” can be used interchangeably.
  • first vector with index In the context of the present application, the terms “first vector with index” , “first index” and “index of first vector” can be used interchangeably. In the context of the present application, the terms “second vector with index” , “second index” and “index of second vector” can be used interchangeably.
  • the network device 120 may send a RS to the terminal device 110 in a downlink.
  • the terminal device 110 may transmit a RS to the network device 120 in an uplink.
  • a RS is a signal sequence (also referred to as “RS sequence” ) that is known by both the network device 120 and the terminal devices 110.
  • a RS sequence may be generated and transmitted by the network device 120 based on a certain rule and the terminal device 110 may deduce the RS sequence based on the same rule.
  • a RS sequence may be generated and transmitted by the terminal device 110 based on a certain rule and the network device 120 may deduce the RS sequence based on the same rule.
  • RS may include but are not limited to downlink or uplink Demodulation Reference Signal (DMRS) , CSI-RS, Sounding Reference Signal (SRS) , Phase Tracking Reference Signal (PTRS) , Tracking Reference Signal (TRS) , fine time-frequency Tracking Reference Signal (TRS) , CSI-RS for tracking, Positioning Reference Signal (PRS) and so on.
  • DMRS downlink or uplink Demodulation Reference Signal
  • SRS Sounding Reference Signal
  • PTRS Phase Tracking Reference Signal
  • TRS Tracking Reference Signal
  • TRS fine time-frequency Tracking Reference Signal
  • CSI-RS for tracking
  • PRS Positioning Reference Signal
  • the network device 120 may transmit DCI via a PDCCH to the terminal device 110.
  • the DCI may indicate resource allocation for data transmission in a DL or UL.
  • a DMRS associated with the PDCCH may also be transmitted from the network device 120 to the terminal device 110.
  • the DMRS may be used by the terminal device 110 for channel demodulation.
  • the terminal device 110 may attempt to blindly decode the DCI in a PDCCH in a search space which is associated with a control resource set (CORESET) .
  • CORESET control resource set
  • a “CORESET” and/or a search space refers to a set of resource element groups (REGs) within which the terminal device 110 attempts to blindly decode the DCI.
  • REGs resource element groups
  • a search space indicating the start time and a periodicity for monitoring a PDCCH in the CORESET may be indicated to the terminal device 110.
  • the terminal device 110 may perform the UL and/or DL data transmission (for example, data transmission via PDSCH and/or Physical Uplink Shared Channel (PUSCH) ) with the network device 120 accordingly.
  • PUSCH Physical Uplink Shared Channel
  • the network device 120 may communicate data and control information to the terminal device 110 via a plurality of beams (also referred to as “DL beams” ) .
  • the terminal device 110 may also communicate data and control information to the network device 120 via a plurality of beams (also referred to as “UL beams” ) .
  • a beam is also defined and indicated by parameters of a transmission configuration indicator. For example, there may be a transmission configuration indication (TCI) field in DCI.
  • TCI transmission configuration indication
  • a value of the TCI field may be referred to as a “TCI codepoint” .
  • a TCI codepoint may indicate one or more TCI states.
  • Each TCI state contains parameters for configuring a quasi co-location (QCL) relationship between one or two DL and/or UL reference signals and the DMRS ports of the PDSCH, the DMRS ports of PDCCH, the DMRS ports of PUSCH, the DMRS ports of PUCCH, the SRS ports of a SRS resource or the CSI-RS ports of a CSI-RS resource.
  • QCL quasi co-location
  • some interactions are performed among the terminal device 110 and the network device 120 (such as, exchanging configuration (s) and so on) . It is to be understood that the interactions may be implemented either in one single signaling/message/configuration or multiple signaling/messages/configurations, including system information, radio resource control (RRC) message, downlink control information (DCI) message, uplink control information (UCI) message, media access control (MAC) control element (CE) and so on.
  • RRC radio resource control
  • DCI downlink control information
  • UCI uplink control information
  • CE media access control element
  • the terminal device 110 may receive, from the network device, at least one configuration indicating the number of physical resource blocks (PRBs) in a bandwidth part (BWP) , the number of a plurality of subbands, a size of one subband and the number of PRBs of one subband. For example, through RRC signalling.
  • PRBs physical resource blocks
  • BWP bandwidth part
  • the terminal device 110 may be configured with a first plurality of CSI-RS resources or a first plurality of groups of CSI-RS ports.
  • the first plurality of CSI-RS resources or the first plurality of groups of CSI-RS ports may be configured for channel measurement for a CSI report or for a PMI report.
  • the first plurality of CSI-RS resources may comprise N t CSI-RS resources.
  • the first plurality of groups of CSI-RS ports may comprise N t groups of CSI-RS ports.
  • the first plurality of CSI-RS resources may be the N t CSI-RS resources.
  • the number of CSI-RS resources in the first plurality of CSI-RS resources may be N t .
  • N t may be a positive integer, and 1 ⁇ N t ⁇ 8 or 1 ⁇ N t ⁇ 4 or 2 ⁇ N t ⁇ 4 or 2 ⁇ N t ⁇ 8 or 2 ⁇ N t ⁇ 16 or 1 ⁇ N t ⁇ 16.
  • N t may be at least one of ⁇ 1, 2, 3, 4 ⁇ or at least one of ⁇ 2, 3, 4 ⁇ or at least one of ⁇ 1, 2, 3, 4, 6, 8, 12, 16 ⁇ or at least one of ⁇ 1, 2, 3, 4, 6, 8, 10, 12, 14, 16 ⁇ .
  • each one CSI-RS resource in the first plurality of CSI-RS resources there may be P ports. In some embodiments, each one CSI-RS resource in the first plurality of CSI-RS resources may comprise P ports. In some embodiments, for each group of CSI-RS ports in the first plurality of groups of CSI-RS ports, there may be P ports. In some embodiments, each group of CSI-RS ports in the first plurality of groups of CSI-RS ports may comprise P ports. In some embodiments, P may be a positive integer. In some embodiments, P may be at least one of ⁇ 1, 2, 4, 8, 12, 16, 24, 32 ⁇ .
  • P may be at least one of ⁇ 16, 24, 32 ⁇ or at least one of ⁇ 12, 16, 24, 32 ⁇ .
  • each CSI-RS resource or each group of CSI-RS ports may comprise same number or different number of ports.
  • the at least one configuration for the CSI report may comprise or indicate the first plurality of CSI-RS resources or the first plurality of groups of CSI-RS ports for channel measurement for the CSI report.
  • the number or the total number of CSI-RS ports for channel measurement for the CSI repot may be represented as P t .
  • P t may be a positive integer. For example, 1 ⁇ P t ⁇ 1024.
  • P t may be at least one of ⁇ 48, 64, 96, 128 ⁇ or at least one of ⁇ 36, 48, 64, 72, 96, 128, 256, 512, 1024 ⁇ .
  • the number or the total number of CSI-RS ports for channel measurement for the CSI report may be comprised in the at least one configuration or may be configured by the network device. In some embodiments, the number or the total number of CSI-RS ports may comprise the first plurality of groups of CSI-RS ports or comprise N t groups of CSI-RS ports.
  • the terminal device 110 may indicate or select or determine or report a second plurality of CSI-RS resources based on the first plurality of CSI-RS resources.
  • the report or indication of the second plurality of CSI-RS resources may be comprised in the measurement report.
  • the second plurality of CSI-RS resources may be same as the first plurality of CSI-RS resources.
  • the second plurality of CSI-RS resources may be a subset of the first plurality of CSI-RS resources.
  • the second plurality of CSI-RS resources may comprise N s CSI-RS resource.
  • the number of CSI-RS resources in the second plurality of CSI-RS resources may be N s .
  • N s may be a positive integer, and 1 ⁇ N s ⁇ N t . In some embodiments, 1 ⁇ N s ⁇ 8 or 1 ⁇ N s ⁇ 4 or 1 ⁇ N s ⁇ 16. In some embodiments, N s may be at least one of ⁇ 1, 2, 3, 4, 6, 8, 12, 16 ⁇ or at least one of ⁇ 1, 2, 3, 4, 6, 8, 10, 12, 14, 16 ⁇ . In some embodiments, N s may be at least one of ⁇ 1, 2, 3, 4 ⁇ or at least one of ⁇ 2, 3, 4 ⁇ or at least one of ⁇ 2, 3, 4, 6, 8, 12, 16 ⁇ . In some embodiments, N s may be less than or equal to N t . In some embodiments, N t and N s can be used interchangeably in this disclosure. For example, N t may be replaced with N s in at least one formula in this disclosure.
  • the terminal device 110 may receive, at least one configuration for one channel state information (CSI) report, wherein the at least one configuration may comprise configuration of the first plurality of channel state information reference signal (CSI-RS) resources and at least one codebook subset restriction.
  • CSI-RS channel state information reference signal
  • each CSI-RS resource in the first plurality of CSI-RS resources may correspond to one of the at least one codebook subset restriction.
  • each one of the at least one codebook subset restriction may correspond to one CSI-RS resource in the first plurality of CSI-RS resources.
  • the network device 120 may transmit at least one configuration for channel measurement for one channel state information (CSI) report, wherein the at least one configuration may comprise configuration of a first plurality of channel state information reference signal (CSI-RS) resources.
  • the network device 120 may receive from the terminal device, at least one codebook indicator in the CSI report from the terminal device, wherein the at least one codebook indicator may comprise at least one of: a first plurality of first vectors or a second plurality of second vectors or a third plurality of third vectors.
  • the network device 120 may transmit, to the terminal device 110, at least one configuration for channel measurement for one channel state information (CSI) report, wherein the at least one configuration may comprise configuration of a first plurality of channel state information reference signal (CSI-RS) resources and at least one codebook subset restriction.
  • CSI-RS channel state information reference signal
  • each CSI-RS resource in the first plurality of CSI-RS resources may correspond to one of the at least one codebook subset restriction.
  • each one of the at least one codebook subset restriction may correspond to one CSI-RS resource in the first plurality of CSI-RS resources.
  • the network device 120 may receive, from the terminal device 110, at least one of:a first plurality of first vectors or a second plurality of second vectors or a third plurality of third vectors in the CSI report from the terminal device.
  • the terminal device 110 may determine or report a number of layers and at least one codebook indicator based on the at least one configuration to the network device.
  • the number of layers (e.g. represented as v) may be one of ⁇ 1, 2 ⁇ or ⁇ 1, 2, 3, 4 ⁇ or ⁇ 1, 2, 3, 4, 5, 6, 7, 8 ⁇ .
  • r may be one of ⁇ 1, 2, ...v ⁇ or ⁇ 1, 2 ⁇ or ⁇ 1, 2, 3, 4 ⁇ or ⁇ 1, 2, 3, 4, 5, 6, 7, 8 ⁇ .
  • a first value in a first dimension or a value of a first parameter of antenna port configuration may be represented as N 1 .
  • N 1 may be a positive integer.
  • N 1 may be one of ⁇ 2, 3, 4, 6, 8, 12, 16 ⁇ .
  • a first value in a second dimension or a value of a second parameter of antenna port configuration may be represented as N 2 .
  • N 2 may be a positive integer.
  • N 2 may be one of ⁇ 1, 2, 3, 4 ⁇ .
  • the first value in the first dimension and the first value in the second dimension may be configured in one high layer (e.g. RRC) parameter or may be comprised in the at least one configuration.
  • the value of the first parameter of antenna port configuration and the value of the second parameter of antenna port configuration may be configured in one higher layer (e.g. RRC) parameter or may be comprised in the at least one configuration.
  • the terminal device 110 may be configured with a number of PRBs for a bandwidth part (BWP) or with a size for the BWP.
  • the number of PRBs for the BWP (e.g. represented as ) may be a positive integer.
  • N BWP may be a positive integer.
  • the terminal device 110 may be configured with a starting position of the BWP (e.g. represented as ) .
  • the starting position of the BWP and the number of PRBs for the BWP may be configured in one higher layer parameter.
  • subband may correspond to a subband for CQI or CQI subband or CSI subband.
  • the size of one subband or the number of PRBs of one subband may be represented as and is a positive integer. For example, may be at least one of ⁇ 4, 8, 16, 32 ⁇ . In some embodiments, may be based on the value of N BWP . In some embodiments, if 24 ⁇ N BWP ⁇ 72, may be 4 or 8. For example, may be configured to be 4 or 8 based on one higher layer parameter for subband. In some embodiments, if 73 ⁇ N BWP ⁇ 144, may be 8 or 16. For example, may be configured to be 8 or 16 based on the higher layer parameter for subband. In some embodiments, if 145 ⁇ N BWP ⁇ 275, may be 16 or 32. For example, may be configured to be 16 or 32 based on the higher layer parameter for subband.
  • the terminal device may be configured with a parameter for codebook or the at least one configuration may comprise the parameter for codebook (for example, represented as R) , and the value of R may be a positive integer.
  • R may be one of ⁇ 1, 2, 4, 8 ⁇ .
  • the value of R may be either 1 or 2 or 4.
  • the value of R may be 1 or 2.
  • nchoosek may be a function to choose k values from n values.
  • nchoosek (a, b) a! / (b! * (a-b) ! ) .
  • “! ” may be factorial.
  • a! 1*2*...* (a-1) *a.
  • b! 1*2*...* (b-1) *b.
  • (a-b) ! 1*2*...* (a-b-1) * (a-b) .
  • C (a, b) and/or may be nchoosek (a, b) .
  • a and/or b may be positive integer. In some embodiments, a may be larger than or no less than b.In some embodiments, 1 ⁇ a ⁇ 32. In some embodiments, 1 ⁇ b ⁇ 32. In some embodiments, 1 ⁇ b ⁇ a.
  • the terminal device may receive the at least one configuration via at least one of RRC, MAC CE and DCI.
  • a parameter “O 1 ” there may be a parameter “O 1 ” , and “O 1 ” may represent a first discrete fourier transform (DFT) oversampling in the first dimension.
  • DFT discrete fourier transform
  • “O 1 ” may be at least one of ⁇ 1, 2, 4, 8 ⁇ .
  • “O 1 ” may be 2 or 4.
  • there may be a parameter “O 2 ” and “O 2 ” may represent a second DFT oversampling in the second dimension.
  • “O 2 ” may be at least one of ⁇ 1, 2, 4, 8 ⁇ .
  • “O 2 ” may be 2 or 4.
  • one configuration of (N 1 , N 2 ) may correspond to one configuration of (O 1 , O 2 ) . In some embodiments, one configuration of (O 1 , O 2 ) may correspond to one configuration of (N 1 , N 2 ) . In some embodiments, the example configurations of (N 1 , N 2 ) and (O 1 , O 2 ) may be at least one row and/or column in Table 1.
  • FIG. 2 illustrates a signaling flow 200 of reporting at least one codebook indicator in accordance with some embodiments of the present disclosure.
  • the signaling flow 200 will be discussed with reference to FIG. 1, for example, by using the terminal device 110 and the network device 120. It is noted that FIG. 2 is only an example embodiment.
  • the network device 120 may transmit (2010) at least one configuration for channel measurement for a measurement report to the terminal device 110.
  • the terminal device 110 may receive the at least one configuration for channel measurement for the measurement report from the network device 120.
  • the at least one configuration may be for a CSI measurement.
  • the at least one configuration may include at least one of: a first plurality of CSI-RS resources for channel measurement for the CSI report, a value for number of first vectors in the first plurality of first vectors and/or number of second vectors in the second plurality of second vectors and/or number of third vectors in the third plurality of third vectors for the CSI report (For example, represented as L, L may be positive integer. For example, 1 ⁇ L ⁇ 8. For another example, L ⁇ ⁇ 1, 2, 3, 4, 6 ⁇ .
  • the at least one configuration may include a first plurality of reference signal resources (e.g. N t ) , an indication of a pattern and at least one codebook subset restriction.
  • each of the at least one codebook subset restriction may be associated with or may correspond to one reference signal resource in the first plurality of reference signal resources.
  • each reference signal resource in the first plurality of reference signal resources may be associated with or may correspond to or may be configured with one codebook subset restriction.
  • the number of reference signal resources in the first plurality of reference signal resources (e.g. N t ) may be same with the number of the at least one codebook subset restriction (e.g. N cbsr ) .
  • N t N cbsr .
  • the number of reference signal resources in the first plurality of reference signal resources (e.g. N t ) may be no less than or larger than the number of the at least one codebook subset restriction (e.g. N cbsr ) .
  • each codebook subset restriction with index n cbsr of the at least one codebook subset restriction may be associated with or may correspond to one CSI-RS resource with index n t in the first plurality of CSI-RS resources or one CSI-RS resource with index n s in the second plurality of CSI-RS resources.
  • n cbsr n t .
  • n cbsr n s .
  • n cbsr ⁇ n t .
  • n cbsr ⁇ n s .
  • the codebook subset restriction or the first bitmap corresponding to or associated with the CSI-RS resource with index n t may be assumed to be all one or all zero.
  • no restriction may be assumed on at least one precoder or at least one second vector or at least one first vector or at least one third vector corresponding to or associated with the CSI-RS resource with index n t .
  • all restriction may be assumed on any precoder or any second vector or any first vector or any third vector corresponding to or associated with the CSI-RS resource with index n t .
  • the at least one configuration for the measurement report may comprise a first value in a first dimension or a value of a first parameter (e.g. N 1 ) and a first value in a second dimension or a value of a second parameter (e.g. N 2 ) .
  • the at least one configuration for the measurement report may comprise a second value in first dimension or a value of a third parameter (e.g. represented as N 1, t ) and a second value in second dimension or a value of a fourth parameter (e.g. represented as N 2, t ) .
  • the first value in the first dimension or the value of the first parameter may be or may represent the number of antenna ports or the number of CSI-RS ports corresponding to one CSI-RS resource in the first dimension or the first number of ports in the first dimension.
  • the first value in the second dimension or the value of the second parameter e.g. N 2
  • the second value in first dimension or the value of the third parameter e.g.
  • N 1, t may be or may represent the number of antenna ports or the number of CSI-RS ports corresponding to the first plurality of CSI-RS resources in the first dimension or the second number of ports in the first dimension.
  • the second value in second dimension or the value of the fourth parameter (e.g. represented as N 2, t ) may be or may represent the number of antenna ports or the number of CSI-RS ports corresponding to the first plurality of CSI-RS resources in the second dimension or the second number of ports in the second dimension.
  • the third value in first dimension or the value of the fifth parameter may be or may represent the number of antenna ports or the number of CSI-RS ports corresponding to the second plurality of CSI-RS resources in the first dimension or the third number of ports in the first dimension.
  • the third value in second dimension or the value of the sixth parameter (e.g. represented as N 2, s ) may be or may represent the number of antenna ports or the number of CSI-RS ports corresponding to the second plurality of CSI-RS resources in the second dimension or the third number of ports in the second dimension.
  • each one of the at least one codebook subset restriction may be associated with one CSI-RS resource in the first plurality of CSI-RS resources. In some embodiments, each one of the at least one codebook subset restriction may be based on/associated with the first value in first dimension and the first value in second dimension. In some embodiments, the number of the at least one codebook subset restriction may be N cbsr , N cbsr may be positive integer, e.g. 1 ⁇ N cbsr ⁇ N t or N cbsr is fixed as 1 or fixed as N t .
  • the first plurality of reference signal resources may be comprised in a reference signal resource set. In some embodiments, the first plurality of reference signal resources may be in one slot or a number of adjacent slots. In some embodiments, for each reference signal resource in the first plurality of reference signal resources, there is a set of ports.
  • the at least one configuration may comprise the first plurality of CSI-RS resources (e.g. N t CSI-RS resources) .
  • the first plurality of CSI-RS resources may be a CSI-RS resource set. In some embodiments, the first plurality of CSI-RS resources may be in one slot or T adjacent slots, T may be positive integer.
  • each CSI-RS resource in the first plurality of CSI-RS resources there may be P ports (P may be 1 or 2 or 4 or 8 or 12 or 16 or 24 or 32) .
  • P*N t may be larger than 32.
  • the N t CSI-RS resources in the first plurality of CSI-RS resources may have same or different QCL assumptions (at least for QCL-TypeD if supported) .
  • FIG. 3A shows a schematic diagram of CSI-RS resources pattern, where 64 ports are composed by two CSI-RS resources and each CSI-RS resource comprises 32 ports.
  • FIG. 3B shows a schematic diagram of an example CSI-RS resources pattern, where 128 ports are composed by four CSI-RS resources and each CSI-RS resource comprises 32 ports.
  • FIG. 3C shows a schematic diagram of another example CSI-RS resources pattern, where 128 ports are composed by four CSI-RS resources and each CSI-RS resource comprises 32 ports.
  • the at least one configuration may include at least one reference signal resource, and each one of the at least one reference signal resource may include a set of ports, and the set of ports comprises a first plurality of groups of ports.
  • the at least one configuration may comprise at least one CSI-RS resource, and each one of the at least one CSI-RS resource may comprise P t ports, e.g P t ⁇ ⁇ 48, 64, 72, 96, 128, 256, 512 ⁇ .
  • the P t ports may comprise a first plurality of (e.g. represented as N t ) groups of ports, N t may be positive integer. For example, N t ⁇ ⁇ 1, 2, 3, 4, 6, 8, 10, 12, 14, 16 ⁇ .
  • the first plurality of CSI-RS resources may comprise a first number of CSI-RS resources corresponding to the first dimension (or a first number in the first dimension or a first number of CSI-RS resources in the first dimension) (For example, represented as N t, 1 ) and a first number of CSI-RS resources corresponding to the second dimension (or a first number in the second dimension or a first number of CSI-RS resources in the second dimension) (For example, represented as N t, 2 ) .
  • N t, 1 may be a positive integer. For example, 1 ⁇ N t, 1 ⁇ 16. For another example, 1 ⁇ N t, 1 ⁇ 8.
  • N t, 1 may be at least one of ⁇ 1, 2, 3, 4, 6, 8 ⁇ .
  • N t, 1 may be at least one of ⁇ 1, 2, 3, 4 ⁇ .
  • N t, 1 may be at least one of ⁇ 1, 2, 3, 4, 6, 8, 12, 16 ⁇ .
  • N t, 2 may be a positive integer.
  • 1 ⁇ N t, 2 ⁇ 16 .
  • 1 ⁇ N t, 2 ⁇ 8 .
  • N t, 2 may be at least one of ⁇ 1, 2, 3, 4, 6, 8 ⁇ .
  • N t, 2 may be at least one of ⁇ 1, 2, 3, 4 ⁇ .
  • N t, 2 may be at least one of ⁇ 1,2, 3, 4, 6, 8, 12, 16 ⁇ .
  • the value of the number of CSI-RS resources in the first plurality of CSI-RS resources may be based on the first number of CSI-RS resources corresponding to the first dimension (e.g. Nt , 1 ) and the first number of CSI-RS resources corresponding to the second dimension (e.g. N t, 2 ) and/or the indication of the pattern.
  • the first number of CSI-RS resources corresponding to the first dimension (e.g. N t, 1 ) and/or the first number of CSI-RS resources corresponding to the second dimension may be based on the value of the number of CSI-RS resources in the first plurality of CSI-RS resources (or the value of N t ) and/or the pattern.
  • the indication or the report of the second plurality of CSI-RS resources may comprise the second number of CSI-RS resources corresponding to the first dimension (e.g. N s, 1 ) and/or the second number of CSI-RS resources corresponding to the second dimension (e.g. N s, 2 ) .
  • the indication or the report of the second plurality of CSI-RS resources may comprise the value of the number of CSI-RS resources in the second plurality of CSI-RS resources (or the value of N s ) .
  • the second plurality of CSI-RS resources may comprise a second number of CSI-RS resources corresponding to the first dimension (or a second number in the first dimension or a second number of CSI-RS resources in the first dimension) (For example, represented as N s, 1 ) and a second number of CSI-RS resources corresponding to the second dimension (or a second number in the second dimension or a second number of CSI-RS resources in the second dimension) (For example, represented as N s, 2 ) .
  • N s, 1 may be a positive integer. For example, 1 ⁇ N s, 1 ⁇ 16 . For another example, 1 ⁇ N s, 1 ⁇ 8 .
  • N s, 1 may be at least one of ⁇ 1, 2, 3, 4, 6, 8 ⁇ .
  • N s, 1 may be at least one of ⁇ 1, 2, 3, 4 ⁇ .
  • N s, 1 may be at least one of ⁇ 1,2, 3, 4, 6, 8, 12, 16 ⁇ .
  • N s, 1 may be no larger than N t, 1 .
  • N s, 2 may be a positive integer.
  • 1 ⁇ N s, 2 ⁇ 16.
  • N s, 2 may be at least one of ⁇ 1, 2, 3, 4, 6, 8 ⁇ .
  • N s, 2 may be at least one of ⁇ 1, 2, 3, 4 ⁇ .
  • N s, 2 may be at least one of ⁇ 1, 2, 3, 4, 6, 8, 12, 16 ⁇ .
  • N s, 2 may be no larger than N t, 2 .
  • the value of the number of CSI-RS resources in the second plurality of CSI-RS resources may be based on the second number of CSI-RS resources corresponding to the first dimension (e.g. N s, 1 ) and the second number of CSI-RS resources corresponding to the second dimension (e.g.
  • the second number of CSI-RS resources corresponding to the first dimension (e.g. N s, 1 ) and/or the second number of CSI-RS resources corresponding to the second dimension (e.g. N s, 2 ) may be based on the value of the number of CSI-RS resources in the second plurality of CSI-RS resources (or the value of N s ) and/or the indication of the pattern and/or the indication or the report of the second plurality of CSI-RS resources.
  • the at least one configuration may comprise the first value in the first dimension (or the value of the first parameter or the value of N 1 ) , the first value in the second dimension (or the value of the second parameter or the value of N 2 ) , the indication of pattern and the number of CSI-RS resources in the first plurality of CSI-RS resources (or the value of N t ) .
  • the number of CSI-RS resources in the first plurality of CSI-RS resources may be based on the first number of CSI-RS resources corresponding to the first dimension (e.g. N t, 1 ) and first number of CSI-RS resources corresponding to the second dimension (e.g. N t, 2 ) .
  • N t N t, 1 *N t, 2 .
  • the number of CSI-RS resources in the second plurality of CSI-RS resources may be based on the second number of CSI-RS resources corresponding to the first dimension (e.g. N s, 1 ) and second number of CSI-RS resources corresponding to the second dimension (e.g. N s, 2 ) .
  • N s N s, 1 *N s, 2 .
  • the at least one configuration may comprise the first value in the first dimension (or the value of the first parameter or the value of N 1 ) , the first value in the second dimension (or the value of the second parameter or the value of N 2 ) , the second value in the first dimension (or the value of the third parameter or the value of N 1, t ) and the second value in the second dimension (or the value of the fourth parameter or the value of N 2, t ) .
  • the indication or the report of the second plurality of CSI-RS resources in the measurement report may comprise the third value in the first dimension (or the value of the fifth parameter or the value of N 1, s ) and the third value in the second dimension (or the value of the sixth parameter or the value of N 2, s ) .
  • the indication or the report of the second plurality of CSI-RS resources in the measurement report may comprise the fifth parameter and the sixth parameter.
  • N 1, t may be a positive integer. In some embodiments, N 1, t may be at least one of ⁇ 4, 8, 12, 16, 24, 32, 64 ⁇ or at least one of ⁇ 2, 3, 4, 8, 12, 16, 24, 32, 48, 64 ⁇ . In some embodiments, N 2, t may be a positive integer. In some embodiments, N 2, t may be at least one of ⁇ 2, 3, 4, 8, 12, 16, 24, 32, 64 ⁇ or at least one of ⁇ 1, 2, 3, 4, 8 ⁇ .
  • N 1, s may be a positive integer. In some embodiments, N 1, s may be at least one of ⁇ 4, 8, 12, 16, 24, 32, 64 ⁇ or at least one of ⁇ 2, 3, 4, 8, 12, 16, 24, 32, 48, 64 ⁇ . In some embodiments, N 1, s may be no larger than N 1, t . In some embodiments, N 1,s may be no less than N 1 . In some embodiments, N 1 ⁇ N 1, s ⁇ N 1, t . In some embodiments, N 2, s may be a positive integer. In some embodiments, N 2, s may be at least one of ⁇ 2, 3, 4, 8, 12, 16, 24, 32, 64 ⁇ or at least one of ⁇ 1, 2, 3 4, 8 ⁇ . In some embodiments, N 2,s may be no larger than N 2, t . In some embodiments, N 2, s may be no less than N 2 . In some embodiments, N 2 ⁇ N 2, s ⁇ N 2, t .
  • the pattern may be based on the first value in the first dimension (or the value of the first parameter or the value of N 1 ) , the first value in the second dimension (or the value of the second parameter or the value of N 2 ) , the second value in the first dimension (or the value of the third parameter or the value of N 1, t ) and the second value in the second dimension (or the value of the fourth parameter or the value of N 2, t ) .
  • the first number of CSI-RS resources corresponding to the first dimension e.g.
  • N t, 1 may be based on the first value in the first dimension (or the value of the first parameter or the value of N 1 ) and the second value in the first dimension (or the value of the third parameter or the value of N 1, t ) .
  • N t, 1 N 1, t /N 1 .
  • the first number of CSI-RS resources corresponding to the second dimension e.g. N t, 2
  • N t, 2 N 2, t /N 2 .
  • the indication or the report of the second plurality of CSI-RS resources in the measurement report may be based on the third value in the first dimension (or the value of the fifth parameter or the value of N 1, s ) and the third value in the second dimension (or the value of the sixth parameter or the value of N 2, s ) and/or the first value in the first dimension (or the value of the first parameter or the value of N 1 ) and/or the first value in the second dimension (or the value of the second parameter or the value of N 2 ) .
  • the second number of CSI-RS resources corresponding to the first dimension e.g.
  • N s, 1 may be based on the first value in the first dimension (or the value of the first parameter or the value of N 1 ) and the third value in the first dimension (or the value of the fifth parameter or the value of N 1, s ) .
  • N s, 1 N 1, s /N 1 .
  • the second number of CSI-RS resources corresponding to the second dimension e.g. N s, 2
  • N s, 2 N 2, s /N 2 .
  • the at least one configuration may comprise the first value in the first dimension (or the value of the first parameter or the value of N 1 ) , the first value in the second dimension (or the value of the second parameter or the value of N 2 ) , the first number of CSI-RS resources corresponding to the first dimension (e.g. N t, 1 ) and the first number of CSI-RS resources corresponding to the second dimension (e.g. N t, 2 ) .
  • the second value in the first dimension (or the value of the third parameter or the value of N 1, t ) and/or the second value in the second dimension (or the value of the fourth parameter or the value of N 2, t ) may be based on the first value in the first dimension (or the value of the first parameter or the value of N 1 ) , the first value in the second dimension (or the value of the second parameter or the value of N 2 ) and the pattern (or the first number of CSI-RS resources corresponding to the first dimension (e.g. N t, 1 ) and the first number of CSI-RS resources corresponding to the second dimension (e.g. N t, 2 ) or the number of CSI-RS resources in the first plurality of CSI-RS resources or the value of N t ) .
  • the second value in the first dimension may be based on the first value in the first dimension (or the value of the first parameter or the value of N 1 ) and the first number of CSI-RS resources corresponding to the first dimension (e.g. N t, 1 ) (or the pattern) .
  • N 1, t N 1 *N t, 1 .
  • the second value in the second dimension may be based on the first value in the second dimension (or the value of the second parameter or the value of N 2 ) and the first number of CSI-RS resources corresponding to the second dimension (e.g. N t, 2 ) (or the pattern) .
  • N 2, t N 2 *N t, 2 .
  • the third value in the first dimension (or the value of the fifth parameter or the value of N 1, s ) and/or the third value in the second dimension (or the value of the sixth parameter or the value of N 2, s ) may be based on the first value in the first dimension (or the value of the first parameter or the value of N 1 ) , the first value in the second dimension (or the value of the second parameter or the value of N 2 ) and the indication or the report of the second plurality of CSI-RS resources in the measurement report and/or the pattern (or the second number of CSI-RS resources corresponding to the first dimension (e.g. N s, 1 ) and the second number of CSI-RS resources corresponding to the second dimension (e.g. N s, 2 ) or the number of CSI-RS resources in the second plurality of CSI-RS resources or the value of N s ) .
  • the third value in the first dimension may be based on the first value in the first dimension (or the value of the first parameter or the value of N 1 ) and the second number of CSI-RS resources corresponding to the first dimension (e.g. N s, 1 ) (or the pattern and/or the indication or the report of the second plurality of CSI-RS resources in the measurement report) .
  • N 1, s N 1 *N s, 1 .
  • the third value in the second dimension may be based on the first value in the second dimension (or the value of the second parameter or the value of N 2 ) and the second number of CSI-RS resources corresponding to the second dimension (e.g. N s, 2 ) (or the pattern and/or the indication or the report of the second plurality of CSI-RS resources in the measurement report) .
  • N 2, s N 2 *N s, 2 .
  • the terminal device 110 may determine (2010) a second value in the first dimension and a second value in the second dimension or may determine the value of the third parameter and the value of the fourth parameter or may determine the second number of antenna ports in the first dimension and the second number of antenna ports in the second dimension based on the indication of the pattern.
  • the terminal device 110 may determine the second value in first dimension (e.g. represented as N 1, t ) and the second value in second dimension (e.g. represented as N 2, t ) based on the indication of pattern.
  • N t N t, 1 *N t, 2 .
  • N t, 1 and N t, 2 are positive integer.
  • the first value in the first dimension and the first value in second dimension may correspond to one CSI-RS resource in the first plurality of CSI-RS resources.
  • the second value in the first dimension and the second value in the second dimension may correspond to all ports or all CSI-RS ports for all CSI-RS resources in the first plurality of CSI-RS resources or all groups of ports in the first plurality of groups of ports.
  • a third value in the first dimension and a third value in the second dimension may correspond to all ports or all CSI-RS ports for all CSI-RS resources in the second plurality of CSI-RS resources or all groups of ports in the second plurality of groups of ports.
  • the first value in the first dimension and the first value in the second dimension correspond to one reference signal resource in the first plurality of reference signal resources.
  • the second value in the first dimension and the second value in the second dimension correspond to all reference signal resources in the first plurality of reference signal resources.
  • a third value in the first dimension and the third value in second dimension correspond to reference signal resources in the second plurality of reference signal resources.
  • the pattern may indicate at least one of: a first number of reference signal resources corresponding to the first dimension (or the first number of CSI-RS resources corresponding to the first dimension or the first number in the first dimension or the first number of CSI-RS resources in the first dimension or the value of N t, 1 ) and a second number of reference signal resources corresponding to the second dimension (or the first number of CSI-RS resources corresponding to the second dimension or the first number in the second dimension or the first number of CSI-RS resources in the second dimension or the value of N t, 2 ) , a number of reference signal resources in the first plurality of reference signal resources (or the value of N t ) , the second value in the first dimension (or the value of the third parameter or the value of N 1, t ) and the second value in the second dimension (or the value of the fourth parameter or the value of N 2, t ) , a structure of reference signal resources in the first plurality of reference signal resources, a structure of ports in the first plurality of groups
  • pattern may indicate one or more of: the value of N t, 1 and the value of N t, 2 , the structure of the CSI-RS resources in the first plurality of CSI-RS resources; or the structure of the first plurality of groups of ports; or CSI-RS port indexes mapping with the first plurality of CSI-RS resources; or CSI-RS port indexes mapping with the first plurality of groups of ports.
  • the order for CSI-RS port mapping may be in increasing or decreasing order of the identities of CSI-RS resources in the first plurality of CSI-RS resources or in increasing or decreasing order of the configured CSI-RS resources in the first plurality of CSI-RS resources.
  • the order for CSI port mapping may be based on the order of first CSI-RS resource -> second CSI-RS resource ->third CSI-RS resource (if any) -> fourth CSI-RS resource (if any) -> fifth CSI-RS resource (if any) -> sixth CSI-RS resource (if any) -> seventh CSI-RS resource (if any) -> eighth CSI-RS resource (if any) or based on the order of first CSI-RS resource -> third CSI-RS resource -> second CSI-RS resource-> fourth CSI-RS resource or based on the order of first CSI-RS resource -> third CSI-RS resource-> fifth CSI-RS resource -> seventh CSI-RS resource ->second CSI-RS resource -> fourth CSI-RS resource -> sixth CSI-RS resource -> eighth CSI-RS resource.
  • the terminal device 110 may determine a second plurality of reference signal resources based on the at least one configuration and/or the first plurality of reference signal resources. In some embodiments, the second plurality of reference signal resources may be same as or a subset of the first plurality of reference signal resources. For example, the terminal device 110 may determine a second plurality of CSI-RS resources (or a second plurality of groups of ports) , where the second plurality of CSI-RS resources (or the second plurality of groups of ports) may be same as or a subset of the first plurality of CSI-RS resources (or the first plurality of groups of ports) .
  • the indexes for CSI-RS resources in the first plurality of CSI-RS resources may be represented as n t , wherein n t may be non-negative integer. In some embodiments, 1 ⁇ n t ⁇ N t .
  • the CSI-RS resource with index n t may be the (n t ) -th CSI-RS resource in the first plurality of CSI-RS resources.
  • the indexes for CSI-RS resources in the second plurality of CSI-RS resources may be represented as n s , wherein n s may be non-negative integer. In some embodiments, 1 ⁇ n s ⁇ N s .
  • the CSI-RS resource with index n s may be the (n s ) -th CSI-RS resource in the first plurality of CSI-RS resources.
  • the value of n t may be based on the value of N t, 1 and the value of N t, 2 or based on the index of the first number of CSI-RS resources corresponding to the first dimension (e.g. n t, 1 ) and the index of the first number of CSI-RS resources corresponding to the second dimension (e.g. n t, 2 ) .
  • n t, 1 may be non-negative integer. For example, 0 ⁇ n t, 1 ⁇ N t, 1 -1.
  • the CSI-RS resource with index n t, 1 may be the (n t, 1 +1) -th CSI-RS resource in the first number of CSI-RS resources corresponding to the first dimension.
  • the CSI-RS resource with index n t, 2 may be the (n t, 2 +1) -th CSI-RS resource in the first number of CSI-RS resources corresponding to the second dimension.
  • the value of n s may be based on the value of N s, 1 and the value of N s, 2 or based on the index of the second number of CSI-RS resources corresponding to the first dimension (e.g.
  • n s, 1 and the index of the second number of CSI-RS resources corresponding to the second dimension (e.g. n s, 2 ) .
  • n s ns , 1 *N s, 2 +n s, 2 +1.
  • n s n s, 2 *N s, 1 +n s, 1 +1.
  • the CSI-RS resource with index n s, 1 may be the (n s, 1 +1) -th CSI-RS resource in the second number of CSI-RS resources corresponding to the first dimension.
  • the CSI-RS resource with index n s, 2 may be the (n s, 2 +1) -th CSI-RS resource in the second number of CSI-RS resources corresponding to the second dimension.
  • the CSI-RS resource with or corresponding to index n t, 1 and n t, 2 may be the CSI-RS corresponding to (n t, 1 +1) -th CSI-RS resource in the first number of CSI-RS resources corresponding to the first dimension and (n t, 2 +1) -th CSI-RS resource in the first number of CSI-RS resources corresponding to the second dimension.
  • the second value in first dimension (e.g. represented as N 1, t ) and the second value in second dimension (e.g. represented as N 2, t ) may be determined based on the pattern.
  • the first value in first dimension (e.g. represented as N 1 ) and the first value in second dimension (e.g. represented as N 2 ) may correspond to one CSI-RS resource in the first plurality of CSI-RS resources.
  • the second value in first dimension (e.g. represented as N 1, t ) and the second value in second dimension (e.g. represented as N 2, t ) may correspond to all the CSI-RS resources in the first plurality of CSI-RS resources.
  • N 1, t *N 2, t N t *N 1 *N 2 .
  • N 1, t N t, 1 *N 1 .
  • N 2, t N t, 2 *N 2 .
  • the third value in first dimension (e.g. represented as N 1, s ) and the third value in second dimension (e.g. represented as N 2, s ) may correspond to the CSI-RS resources in the second plurality of CSI-RS resources, where the second plurality of CSI-RS resources comprises N s CSI-RS resources.
  • N s may be positive integer.
  • FIG. 4A shows a schematic diagram of an example CSI-RS resources pattern, where the first plurality of CSI-RS resources may include 4 CSI-RS resources or 4 groups of ports.
  • FIG. 4B shows a schematic diagram of another example CSI-RS resources pattern, where the first plurality of CSI-RS resources may include 4 CSI-RS resources or 4 groups of ports and the second plurality of CSI-RS resources may include 2 CSI-RS resources or 2 groups of ports.
  • the first value in first dimension (e.g. represented as N 1 ) and the first value in second dimension (e.g. represented as N 2 ) may be determined based on the pattern.
  • the first value in first dimension (e.g. represented as N 1 ) and the first value in second dimension (e.g. represented as N 2 ) may correspond to one group of ports in the first plurality of groups of ports.
  • the second value in first dimension (e.g. represented as N 1, t ) and the second value in second dimension (e.g. represented as N 2, t ) may correspond to all ports for all CSI-RS resources in the first plurality of CSI-RS resources (or all groups of ports in the first plurality of groups of ports) .
  • N 1, t *N 2, t N t *N 1 *N 2 .
  • N 1 *N 2 N 1, t *N 2, t /N t .
  • the third value in first dimension (e.g. represented as N 1, s ) and the third value in second dimension (e.g. represented as N 2, s ) may correspond to all the groups of ports in the second plurality of groups of ports or correspond to all ports for all CSI-RS resources in the second plurality of CSI-RS resources, where the second plurality of groups of ports may comprise N s groups of ports or the second plurality of CSI-RS resources may comprise N s CSI-RS resources.
  • N s may be positive integer.
  • N 1, s *N 2, s N s *N 1 *N 2 .
  • N 1 *N 2 N 1, s *N 2, s /N s .
  • the terminal device 110 may transmit (2030) , to the network device 120, the measurement report based on the at least one configuration, the second value in first dimension and the second value in the second dimension.
  • the network device 120 may receive the measurement report from the terminal device 110.
  • the measurement report comprises a second plurality of second vectors, wherein each second vector may be based on the second value in the first dimension and the second value in the second dimension.
  • a restriction on reporting of precoder or PMI report based on or corresponding to at least one second vector may be determined based on the at least one codebook subset restriction.
  • the measurement report comprises a third plurality of third vectors, wherein each third vector may be based on the third value in the first dimension and the third value in the second dimension.
  • a restriction on reporting of precoder or PMI report based on or corresponding to at least one third vector may be determined based on the at least one codebook subset restriction.
  • each codebook subset restriction may be associated with at least one first vector or may be associated with the first value in the first dimension and the second value in the second dimension. In some embodiments, one first vector may be based on the first value in the first dimension and the first value in the second dimension.
  • a restriction for precoders for the measurement report may be based on the first value in the first dimension (or the value of N 1 ) and/or the first value in the second dimension (or the value of N 2 ) and/or the first number of reference signal resources corresponding to the first dimension (or the value of N t, 1 ) and/or the first number of reference signal resources corresponding to the second dimension (or the value of N t, 2 ) and/or the pattern and/or the number of reference signal resources in the first plurality of reference signal resources (or the value of N t ) and/or the second value in the first dimension (or the value of N 1, t ) and/or the second value in the second dimension (or the value of N 2, t ) and/or the second number of reference signal resources corresponding to the first dimension (or the value of N s, 1 ) and/or the second number of reference signal resources corresponding to the second dimension (or the value of N s, 2 ) and/or the number of reference signal resources in the
  • one of the at least one codebook subset restriction may be a first bitmap, and the number of bits in the first bitmap may be N 1 *O 1 *N 2 *O 2 .
  • N 1 may represent the first value in first dimension.
  • N 2 may represent the first value in second dimension.
  • O 1 and O 2 may represent parameters corresponding to the first value in first dimension and the first value in second dimension, respectively.
  • a restriction on at least one precoder or a restriction of at least one precoder or a restriction on reporting of at least one precoder or a restriction on PMI reporting or a restriction on at least one first vector or a restriction on at least one second vector or a restriction on at least one third vector corresponding to at least one precoder (or at least one first vector or at least one second vector or at least one third vector) may be applied for the measurement report.
  • the at least one precoder (or the at least one first vector or the at least one second vector or the at least one third vector) may be based on the at least one codebook subset restriction.
  • the restriction of at least one precoder or the restriction of at least one precoder or the restriction on reporting of at least one precoder or the restriction on PMI reporting or the restriction on at least one first vector or the restriction on at least one second vector or the restriction on at least one third vector corresponding to at least one precoder may be PMI reporting corresponding to the at least one precoder (or the at least one first vector or the at least one second vector or the at least one third vector) is not allowed in the measurement report.
  • the measurement report may comprise a second plurality of second vectors, wherein each second vector may be based on the second value in first dimension and the second value in second dimension (or the measurement report may comprise a third plurality of third vectors, wherein each third vector may be based on the third value in first dimension and the third value in second dimension) , and the restriction on the at least one precoder or the restriction on at least one first vector or the restriction on at least one second vector or the restriction on at least one third vector or the restriction on reporting of precoder or the restriction on PMI reporting corresponding to the at least one precoder (or corresponding to the at least one first vector or corresponding to the at least one second vector or the at least one third vector) based on at least one second vector may be determined based on the at least one codebook subset restriction.
  • each one of the at least one codebook subset restriction may be associated with at least one first vector.
  • one first vector may be based on or associated with the first value in first dimension and the first value in second dimension.
  • the restriction on reporting of precoder (or the restriction on PMI reporting corresponding to precoder or the restriction on the at least one precoder or the restriction on at least one first vector or the restriction on at least one second vector or the restriction on at least one third vector) for the measurement report (or for the first plurality of CSI-RS resources) may be based on the first value in first dimension (e.g. N 1 ) , the first value in second dimension (e.g. N 2 ) and the second value in first dimension (or the value of N t, 1 ) and the second value in second dimension (or the value of N t, 2 ) (or the value of N t ) .
  • one of the at least one codebook subset restriction may be a first bitmap, and the number of bits in the first bitmap may be N 1 *O 1 *N 2 *O 2 .
  • the bit sequence in the first bitmap may be wherein a 0 may be the least significant bit (LSB) , and may be the most significant bit (MSB) .
  • the number of the set of second vectors may be N 1, t *O 1 *N 2, t *O 2 .
  • one second vector may be a vector with length N 1, t *N 2, t or a vector with N 1, t *N 2, t values.
  • one second vector may be represented as
  • a second bitmap or one codebook subset restriction determined from the at least one codebook subset restriction may be applied for the restriction of precoders (or for the restriction of PMI reporting corresponding to precoders or the restriction on the at least one precoder or the restriction on at least one first vector or the restriction on at least one second vector or the restriction on at least one third vector) for the measurement report.
  • one bit in the applied codebook subset restriction or the second bitmap may indicate a reporting corresponding to a group of second vectors (or a group of third vectors) allowed or not.
  • one bit in the applied codebook subset restriction or the second bitmap may be associated with or may correspond to a group of second vectors (or a group of third vectors) .
  • the group of second vectors (or the group of third vectors) may be comprised in the at least one precoder or the at least one second vector (or the at least one third vector) for restriction for the measurement report.
  • one bit in the applied codebook subset restriction or the second bitmap may indicate a reporting (or PMI reporting) is allowed or not to correspond to any one or at least one in the group of second vectors (or in the group of third vectors) .
  • one bit with value 0 (or with value 1) in the applied codebook subset restriction or in the second bitmap may indicate a reporting corresponding to any one or at least one in the group of second vectors (or in the group of third vectors) is not allowed.
  • one bit with value 0 (or with value 1) in the applied codebook subset restriction or in the second bitmap may indicate a reporting (or PMI reporting) is not allowed to correspond to any precoder corresponding to or associated with any one or at least one in the group of second vectors (or in the group of third vectors) .
  • one codebook subset restriction (for example, configured to or associated with or corresponding to one CSI-RS resource in the first plurality of CSI-RS resources) may be at least one of: n1-n2, two-one-TypeI-SinglePanel-Restriction, two-two-TypeI-SinglePanel-Restriction, four-one-TypeI-SinglePanel-Restriction, three-two-TypeI-SinglePanel-Restriction, six-one-TypeI-SinglePanel-Restriction, four-two-TypeI-SinglePanel-Restriction, eight-one-TypeI-SinglePanel-Restriction, four-three-TypeI-SinglePanel-Restriction, six-two-TypeI-SinglePanel-Restriction, twelve-one-TypeI-SinglePanel-Restriction,
  • n1 may be same as N 1 . In some embodiments, n2 may be same as N 2 . In some embodiments, n1 may be at least one of ⁇ 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 64, 128 ⁇ or at least one of ⁇ one, two, three, four, six, eight, twelve, sixteen, twenty-four, thirty-two, sixty-four, one hundred twenty-eight ⁇ .
  • n2 may be at least one of ⁇ 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 64, 128 ⁇ or at least one of ⁇ one, two, three, four, six, eight, twelve, sixteen, twenty-four, thirty-two, sixty-four, one hundred twenty-eight ⁇ or at least one of ⁇ one, two, three, four, six, eight ⁇ .
  • ng may be at least one of ⁇ 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 64, 128 ⁇ or at least one of ⁇ one, two, three, four, six, eight, twelve, sixteen, twenty-four, thirty-two, sixty-four, one hundred twenty-eight ⁇ or at least one of ⁇ one, two, three, four, six, eight ⁇ .
  • the number of bits in the second bitmap may be N 1 *O 1 *N 2 *O 2 .
  • the bit sequence in the second bitmap may be wherein a 0 may be the least significant bit (LSB) , and may be the most significant bit (MSB) .
  • the second bitmap may be based on at least one first bitmap corresponding to at least one codebook subset restriction. In some embodiments, the second bitmap may be same with the bitmap (or the first bitmap) corresponding to or associated with one of the at least one codebook subset restriction.
  • bit in the second bitmap or the first bitmap may be associated with the group of second vectors (or the group of third vectors) or all precoders based on at least one second vector in the group of second vectors (or all precoders based on at least one third vector in the group of third vectors)
  • l 1 0, 1, ...N 1 O 1 -1
  • m 1 0, 1, ...N 2 O 2 -1
  • l r N t, 1 *l 1 +n t, 1
  • m r N t, 2 *m 1 +n t, 2 .
  • l r N s, 2 *l 1 +n s, 2
  • m r N s, 1 *m 1 +n s, 1 .
  • N t, 1 may represent the first number of reference signal resources corresponding to the first dimension
  • N t, 2 may represent the first number of reference signal resources corresponding to the second dimension.
  • N s, 1 may represent the second number of reference signal resources corresponding to the first dimension
  • N s, 2 may represent the second number of reference signal resources corresponding to the second dimension.
  • a precoder matrix index (PMI) reporting or the measurement report may not be allowed to correspond to a precoder (or any precoder or at least one precoder or a second vector or any second vector or at least one second vector or a third vector or at least one third vector) based on any one or at least one in the group of second vectors (or in the group of third vectors) associated with the bit.
  • PMI precoder matrix index
  • one group of second vectors (or one group of third vectors) may comprise a number of second vectors (or a number of third vectors) .
  • one group of second vectors may comprise M r second vectors (or third vectors) .
  • N r may be a positive integer.
  • M r may be same with N t or N s .
  • the second vectors in the group of second vectors may be contiguous vectors corresponding to the first dimension and/or the second dimension.
  • the second vectors in the group of second vectors may be N t, 1 contiguous vectors corresponding to the first dimension and N t, 2 continuous vectors in the second dimension.
  • the third vectors in the group of third vectors may be contiguous vectors corresponding to the first dimension and/or the second dimension.
  • the third vectors in the group of third vectors may be N s, 1 contiguous vectors corresponding to the first dimension and N s, 2 continuous vectors in the second dimension.
  • l r N t, 1 *l 1 +n t, 1
  • m r N t, 2 *m 1 +n t, 2 .
  • l r N s, 2 *l 1 +n s, 2
  • m r N s, 1 *m 1 +n s, 1 .
  • the PMI reporting may not be allowed to correspond to any precoder based on or corresponding to any one or at least one in the group of second vectors (or any one or at least one in the group of third vectors ) associated with the bit.
  • the terminal device 110 may assume all the indications or all bits in the first bitmaps of the more than one codebook subset restriction are same.
  • the value or bitmap corresponding to rank indicator (RI) restriction or codebookSubsetRestriction-i2 (For example, typeI-SinglePanel-codebookSubsetRestriction-i2, typeI-SinglePanel-ri-Restriction, ri-Restriction, typeII-RI-Restriction, typeII-PortSelectionRI-Restriction) in each one of the at least one codebook subset restriction may be assumed or expected to be same.
  • the rank indicator (RI) restriction or codebookSubsetRestriction-i2 (For example, typeI-SinglePanel-codebookSubsetRestriction-i2, typeI-SinglePanel-ri-Restriction, ri-Restriction, typeII-RI-Restriction, typeII-PortSelectionRI-Restriction) in the at least one codebook subset restriction may be combined or aggregated or concatenated for the measurement report.
  • the number of bits for rank indicator (RI) restriction or codebookSubsetRestriction-i2 (For example, typeI-SinglePanel-codebookSubsetRestriction-i2, typeI-SinglePanel-ri-Restriction, ri-Restriction, typeII-RI-Restriction, typeII- PortSelectionRI-Restriction) in one codebook subset restriction may be n bit , n bit may be positive integer. For example, 1 ⁇ n bit ⁇ 8 . For example, n bit ⁇ ⁇ 1, 2, 3, 4, 5, 6, 7, 8 ⁇ .
  • the number of bits for restriction on RI or codebookSubsetRestriction-i2 for the CSI report based on the first plurality of CSI-RS resources may be nx, n r may be positive integer. For example, 1 ⁇ n r ⁇ 3. For example, n r ⁇ ⁇ 1, 2, 3, 4, 5, 6, 7, 8 ⁇ .
  • the first one codebook subset restriction (or the one codebook subset restriction corresponding to CSI-RS resource with lowest or highest ID or the first configured one codebook subset restriction or the last one codebook subset restriction or the last configured one codebook subset restriction) may be applied (For example, other indications or other codebook subset restrictions are ignored) .
  • the applied bitmap or the second bitmap may be determined based on a union or an intersection or “AND” operation or “OR” operation of the at least one first bitmap corresponding to the at least one codebook subset restriction.
  • the value of bit in the applied bitmap or in the second bitmap or in the applied codebook subset restriction may be based on the “AND” or “OR” operation of values of corresponding bits AND ... AND (or OR ...OR ) in the at least one codebook subset restriction.
  • the terms “ (n cbsr ) -th codebook subset restriction of the at least one codebook subset restriction” can be used interchangeably.
  • a third bitmap or one whole codebook subset restriction or one joint or one aggregated or one concatenated codebook subset restriction determined from the at least one codebook subset restriction may be applied for the restriction of precoders (or for the restriction of PMI reporting corresponding to precoders or the restriction on the at least one precoder or the restriction on at least one first vector or the restriction on at least one second vector or the restriction on at least one third vector) for the measurement report.
  • the third bitmap or the one whole codebook subset restriction or the one joint or the one aggregated or the one concatenated codebook subset restriction may be based on a combination or a joint or concatenation or aggregation of the at least one codebook subset restriction.
  • the number of bits in the third bitmap may be N 1, t *O 1 *N 2, t *O 2 or N 1, s *O 1 *N 2, s *O 2 .
  • the bit sequence in the third bitmap may be or wherein a 0 may be the least significant bit (LSB) , and or may be the most significant bit (MSB) .
  • the third bitmap may be based on combination or concatenation or aggregation of the at least one first bitmap corresponding to at least one codebook subset restriction.
  • the applied bitmap or the third bitmap or the applied codebook subset restriction may be or or
  • b may be non-negative integer. In some embodiments, 0 ⁇ b ⁇ N 1 *O 1 *N 2 *O 2 -1. In some embodiments, b ⁇ ⁇ 0, 1, ...N 1 *O 1 *N 2 *O 2 -1 ⁇ or b ⁇ ⁇ N 1 *O 1 *N 2 *O 2 -1, N 1 *O 1 *N 2 *O 2 -2, ...1, 0 ⁇ .
  • a b, 1 may be the first bitmap corresponding to the first codebook subset restriction of the at least one codebook subset restriction.
  • a b, 2 may be the first bitmap corresponding to the second codebook subset restriction of the at least one codebook subset restriction.
  • bit in the first bitmap for the (n cbsr ) -th codebook subset restriction of the at least one codebook subset restriction or bit in the first bitmap for the codebook subset restriction corresponding to the (n cbsr ) -th reference signal resources may be associated with all precoders or any precoder corresponding to or based on one second vector or one third vector
  • l r N t, 1 *l 1 + (n cbsr -1) /N t, 2
  • m r N t, 2 *m 1 + (n cbsr -1) mod N t, 2 .
  • l r N t, 1 *l 1 + (n cbsr -1) mod N t, 2
  • m r N t, 2 *m 1 + (n cbsr -1) /N t, 2 .
  • l r N t, 1 *l 1 + (n cbsr -1) mod N t, 1
  • m r N t, 2 *m 1 + (n cbsr -1) /N t, 2
  • l r N s, 2 *l 1 + (n cbsr -1) mod N s, 2
  • m r N s, 1 *m 1 + (n cbsr -1) /N s, 1 .
  • N cbsr represents the number of codebook subset restriction of the at least one codebook subset restriction.
  • N t represents the number of reference signal resources in the first plurality of reference signal resources.
  • the PMI reporting may not be allowed to correspond to a precoder or any precoder corresponding to or based on the second vector (or the third vector) associated with the bit.
  • bit in the first bitmap for the second codebook subset restriction of the at least one codebook subset restriction or bit in the first bitmap for the codebook subset restriction corresponding to the second reference signal resources may be associated with all precoders or any precoder corresponding to or based on one second vector or one third vector
  • l r l 1
  • bit in the first bitmap for the third codebook subset restriction of the at least one codebook subset restriction or bit in the first bitmap for the codebook subset restriction corresponding to the third reference signal resources may be associated with all precoders or any precoder corresponding to or based on one second vector or one third vector
  • l r l 1 +N 1 *O 1
  • l r l 1 +N 1 *O 1
  • each one of the at least one codebook subset restriction may be associated with or configured for one CSI-RS resource or one group of ports.
  • one configured CBSR is applied to the one CSI-RS resource without configuration of codebook subset restriction, e.g. the CBSR associated with first one CSI-RS resource (or with lowest/highest ID) with configuration of CBSR.
  • a codebook configuration may be configured in CSI-ReportConfig or CSI-ResourceConfig.
  • Table 2 shows an example of the codebook configuration.
  • the pattern may be configured in CSI-ReportConfig or CSI-ResourceConfig or codebookConfig. For example, if it’s in codebookConfig, the configured pattern for the CSI-RS resources in the second plurality of CSI-RS resources should be same or the first one is applied. Table 3 below shows an example of a configuration of the pattern.
  • values of N t , N t, 1 , N t, 2 , N 1, t , N 2, t and (N 1 , N 2 ) may be as shown in Table 4.
  • the total number of ports may be N t *N 1 *N 2 .
  • subset of the rows and/or subset of the columns in the Table 4 may be applied.
  • FIG. 5AA to FIG. 5HG shows examples for CSI-RS configuration patterns. Embodiments are described with reference to FIG. 5AA to FIG. 5HG.
  • the first plurality of CSI-RS resources or groups of ports comprises 3 CSI-RS resources or 3 groups of ports
  • each CSI-RS resource or each group of ports comprises 16 ports.
  • the first plurality of CSI-RS resources or groups of ports comprises 2 CSI-RS resources or 2 groups of ports, each CSI-RS resource or each group of ports comprises 16 ports.
  • subset of the rows and/or subset of the columns in the Table 5 may be applied for the at least one configuration for 48 ports. It is noted that Table 5 is only an example.
  • subset of the rows and/or subset of the columns in the Table 6 may be applied for the at least one configuration for 48 ports. It is noted that Table 6 is only an example.
  • each CSI-RS resource or each group of ports comprises 32 ports.
  • each CSI-RS resource or each group of ports comprises 16 ports.
  • subset of the rows and/or subset of the columns in the Table 7 may be applied for the at least one configuration for 64 ports. It is noted that Table 7 is only an example.
  • subset of the rows and/or subset of the columns in the Table 8 may be applied for the at least one configuration for 64 ports. It is noted that Table 8 is only an example.
  • FIG. 6, illustrates a signaling flow 600 of transmitting a measurement report in accordance with some embodiments of the present disclosure.
  • the signaling flow 600 will be discussed with reference to FIG. 1, for example, by using the terminal device 110 and the network device 120.
  • the terminal device 110 may transmit (2030) , to the network device 120, the measurement report based on the at least one configuration, the second value in first dimension and the second value in the second dimension.
  • the network device 120 may receive the measurement report from the terminal device 110.
  • the measurement report may comprise at least one of: a first plurality of first vectors and a second plurality of second vectors and/or a third plurality of third vectors.
  • each first vector or one first vector may be based on the first value in the first dimension and the first value in the second dimension.
  • each second vector or one second vector may be based on a second value in the first dimension and a second value in the second dimension.
  • the second plurality of second vectors may be based on the first plurality of first vectors.
  • the measurement report may include a first indication based on the first value in first dimension and a second indication based on the first value in second dimension.
  • the measurement report may also include a third indication based on the second value in first dimension and a fourth indication based on the second value in second dimension.
  • the measurement report may also include an eleventh indication based on the third value in first dimension and a twelfth indication based on the third value in second dimension.
  • the third indication and the fourth indication may be based on the first indication and the second indication.
  • the at least one configuration may comprise at least one of:the value of L 1 , the value of L 2 and the value of L 3 .
  • the second vector may be selected or determined from a group of second vectors corresponding to a first vector.
  • first vectors there may be a set of first vectors based on of N 1 , O 1 , N 2 and O 2 .
  • the number of first vectors in the set of first vectors may be N 1 *O 1 *N 2 *O 2 .
  • one first vector may be a vector with length N 1 *N 2 or with N 1 *N 2 values.
  • the first vector may be represented as
  • the number of the set of third vectors may be N 1, s *O 1 *N 2, s *O 2 .
  • one third vector may be a vector with length N 1, s * N 2, s or with N 1, s *N 2, s values.
  • one third vector may be represented as
  • values of O 1 and O 2 may be associated with or based on at least one of: values of N 1, t and N 2, t , respectively, or values of N 1, s and N 2, s , respectively.
  • value of O 1 and O 2 may be based on/associated with the value of N 1, t and N 2, t , respectively and/or the value of N 1, t and N 2, t , respectively.
  • N 1, t >1 or N 1, s >1, O 1 4 or 2 or 8.
  • if N 2, t >1 or N 2, s >1, O 2 4 or 2 or 8.
  • N 1 may represent the first value in first dimension
  • N 2 may represent the first value in second dimension
  • O 1 and O 2 may represent parameters corresponding to the second value in first dimension and the second value in second dimension or corresponding to the first value in first dimension and the first value in second dimension or corresponding to the third value in first dimension and the third value in second dimension, respectively.
  • N 1, t may represent the second value in the first dimension
  • N 2, t may represent the second value in the second dimension.
  • N 1, s may represent a third value in the first dimension
  • N 2, s may represent a third value in the second dimension.
  • the measurement report may comprise at least one indication of a first one of first vector (or the first indication and the second indication) , and at least one indication of one second vector (or a third indication for the second vector and a fourth indication for the second vector) .
  • the second vector may be from a first group of second vectors.
  • the first group of second vectors may be associated with (or based on) the first one of first vector or associated with (or based on) a second one of first vector or may be based on the first indication and the second indication or may be based on the at least one indication of a first one of first vector.
  • the measurement report may comprise the first indication and the second indication, and the indication of one second vector from a first group of second vectors.
  • the first group of second vectors may be associated with or based on or may correspond to the first indication and the second indication .
  • the measurement report may comprise at least one indication of the second one of first vector (or a fifth indication for the second one of first vector and a sixth indication for the second one of first vector) .
  • the fifth indication may be associated with or may correspond to information of the second one of first vector corresponding to the first dimension.
  • the sixth indication may be associated with or may correspond to information of the second one of first vector corresponding to the second dimension.
  • the second one of first vector may be from a group of first vectors.
  • the group of first vectors (or the fifth indication and the sixth indication) may be based on the first one of first vector or may be based on the first indication and the second indication.
  • the fifth indication and the sixth indication may be based on the first indication and the second indication.
  • the number of first vectors in the group of the first vectors may be 4.
  • the second one of first vector may be based on the first indication, the second indication, the fifth indication and the sixth indication.
  • the number of second vectors in the first group of second vectors may be based on the second value in the first dimension and the second value in the second dimension or based on the value of N t, 1 and/or the value of N t, 2 .
  • the number of second vectors in the first group of second vectors may be based on a first number of reference signal resources corresponding to the first dimension (e.g. N t, 1 ) and a first number of reference signal resources corresponding to the second dimension (e.g. N t, 2 ) .
  • the number of second vectors in the first group of second vectors may be based on the second value in first dimension and the second value in second dimension (or based on N t ) .
  • the indication of the first one of first vector may be wideband reporting.
  • the indication of the second vector may be subband reporting.
  • the indication of the second one of first vector may be subband reporting.
  • the measurement report comprises at least one indication of a first one of second vector (or a seventh indication based on the second value in first dimension and an eight indication based on the second value in second dimension for the first one of second vector) , and at least one indication of a second one of second vector from a second group of second vectors (or a ninth indication based on the second value in first dimension and a tenth indication based on the second value in second dimension for the second one of second vector) .
  • the second group of second vectors may be based on or associated with the first one of second vector.
  • the measurement report may comprise the seventh indication based on the second value in first dimension and the eight indication based on the second value in second dimension, and the ninth indication based on the second value in first dimension and the tenth indication based on the second value in second dimension.
  • the ninth indication and the tenth indication may be based on the seventh indication and the eight indication.
  • the second one of second vector may be based on the seventh indication, the eighth indication, the ninth indication and the tenth indication.
  • the number of second vectors in the second group of second vectors may be at least one of: 16 or 8 or 4*N t or N t or 2*N t .
  • N t represents the number of reference signal resources in the first plurality of reference signal resources.
  • the number of second vectors in the second group of second vectors may be 16 or 8 or 4*N t or 2*N t .
  • the number of second vectors in the second group of second vectors may be 1 or N t .
  • the indication of the first one of second vector may be wideband reporting.
  • the indication of the second one of second vector may be subband reporting. In this way, with more number of ports, the beam can be narrower, with more number of candidate beams selected in subband, performance can be improved.
  • the measurement report may include at least one indication of a first one of first vector, and at least one indication of a third one of second vector from a first group of second vectors corresponding to a first subset of ports (For example, corresponding to a first polarization) , and at least one indication of a fourth one of second vector from the first group of second vectors corresponding to a second subset of ports (For example, corresponding to a second polarization) .
  • the first group of second vectors may be associated with or based on the first one of first vector or associated with or based on a second one of first vector.
  • the measurement report may include the first indication and the second indication, and at least one indication of a third one of second vector from a first group of second vectors corresponding to a first subset of ports (e.g., first polarization) , and at least one indication of a fourth one of second vector from the first group of second vectors corresponding to a second subset of ports (e.g., second polarization) .
  • the first group of second vectors may be associated with or based on the first indication and the second indication or associated with or based on the fifth indication and the sixth indication.
  • the second one of first vector may be from a group of first vectors, and the group of first vectors (or the fifth indication and the sixth indication) may be based on the first one of first vector.
  • the group of first vectors (or the fifth indication and the sixth indication) may be based on the first one of the first vector (or based on the first indication and the second indication) (e.g., at least for 1 or 2 layers codebook) .
  • the number of first vectors in the group of the first vectors may be 4.
  • the number of second vectors in the first group of second vectors may be based on the second value in the first dimension and the second value in the second dimension or based on the first number of reference signal resources corresponding to the first dimension and the first number of reference signal resources corresponding to the second dimension.
  • the number of second vectors in the first group of second vectors may be based on the second value in first dimension and the second value in second dimension (or based on N t ) .
  • the indication of the first one of first vector (or the first indication and the second indication) may be wideband reporting.
  • the indication of the second one of second vector and/or the indication of the third one of second vector may be subband reporting.
  • the indication of the second one of first vector may be subband reporting.
  • the measurement report may comprise at least one indication of a first one of second vector (or a seventh indication based on the second value in first dimension and an eighth indication based on the second value in second dimension for the first one of second vector) , and at least one indication of a second one of second vector from a second group of second vectors corresponding to a first subset of ports (e.g. first polarization) and at least one indication of a third one of second vector from the second group of second vectors corresponding to a second subset of ports (e.g. second polarization) .
  • the second group of second vectors (or the ninth indication and the tenth indication) may be based on the first one of second vector (or based on the seventh indication and the eighth indication) .
  • I number of second vectors in the second group of second vectors may be at least one of 16 or 8 or 4*N t or N t or 2*N t .
  • the number of second vectors in the second group of second vectors may be 16 or 8 or 4*N t or 2*N t , and 3-layer or 4-layer or 5-layer or 6-layer or 7-layer or 8-layer (or for other value of number of layers except 1-layer and 2-layer) , the number of second vectors in the second group of second vectors may be 1 or N t .
  • the indication of the first one of second vector may be wideband reporting.
  • the indication of the second one of second vector and/or the indication of the third one of second vector may be subband reporting. In this way, with the narrower beam, different beams selected for different polarizations may improve the performance.
  • l t, 2 2*i 1, 1 *N t, 1 +i 2, 1 *N t, 1 +n 1, 2
  • m t, 2 2*i 1, 2 *N t, 2 +i 2, 2 *N t, 2 +n 2
  • 2 i 2 may indicate value of n 1, 1 , n 2, 1 , n 1, 2 , n 2, 2 and n
  • the number of bits for i 2 may be or
  • the number of bits for i 2 may be or
  • the number of bits for i 2 may be In case of N 2, t >1 or N 2, s >1, the value of k 1, 1 , k 1, 2 , k 2, 1 and k 2, 2 may be ⁇ O 1 , O 1 , 0, O 2 ⁇ or ⁇ O 1 , 2O 1 , O 2 , 2O 2 ⁇ or ⁇ O 1 , N t, 1 *O 1 , O 2 , N t, 2 *O 2 ⁇ or ⁇ O 1 , N t, 1 *O 1 , 0, N t, 2 *O 2 ⁇ or ⁇ N t, 1 *O 1 , N t, 1 *O 1 , 0, N t, 2 *O 2 ⁇ ⁇ N t, 1 *O 1 , N t, 1 *O 1 , 0, N t, 2 *O 2 ⁇ .
  • the value of k 1, 1 , k 1, 2 , k 2, 1 and k 2, 2 may be ⁇ O 1 , 2O 1 , 0, 0 ⁇ or ⁇ O 1 , N t, 1 *O 1 , 0, 0 ⁇ or ⁇ N t, 1 *O 1 , 2*N t,1 *O 1 , 0, 0 ⁇ .
  • the number of bits for i 2 may be In case of N 2, t > 1 or N 2, s >1, the value of k 1, 1 , k 1, 2 , k 2, 1 and k 2, 2 may be ⁇ O 1 , O 1 , 0, O 2 ⁇ or ⁇ O 1 , 2O 1 , O 2 , 2O 2 ⁇ or ⁇ O 1 , N t, 1 *O 1 , O 2 , N t, 2 *O 2 ⁇ or ⁇ O 1 , N t, 1 *O 1 , 0, N t, 2 *O 2 ⁇ or ⁇ N t, 1 *O 1 , N t, 1 *O 1 , 0, N t, 2 *O 2 ⁇ ⁇ N t, 1 *O 1 , N t, 1 *O 1 , 0, N t, 2 *O 2 ⁇ .
  • the value of k 1, 1 , k 1, 2 , k 2, 1 and k 2, 2 may be ⁇ O 1 , 2O 1 , 0, 0 ⁇ or ⁇ O 1 , N t, 1 *O 1 , 0, 0 ⁇ or ⁇ N t, 1 *O 1 , 2*N t, 1 *O 1 , 0, 0 ⁇ .
  • the number of bits for i 2 may be In case of N 2, t >1 or N 2, s >1, the value of k 1, 1 , k 1, 2 , k 1, 3 , k 2, 1 and k 2, 2 and k 2, 3 may be ⁇ O 1 , 0, O 1 , 0, O 2 , O 2 ⁇ or ⁇ O 1 , 0, N t, 1 *O 1 , 0, O 2 , N t, 2 *O 2 ⁇ or ⁇ N t, 1 *O 1 , 0, N t, 1 *O 1 , 0, N t, 2 *O 2 , N t, 2 *O 2 ⁇ .
  • the value of k 1, 1 , k 1, 2 , k 1, 3 , k 2, 1 and k 2, 2 and k 2, 3 may be ⁇ O 1 , 2O 1 , 3O 1 , 0, 0, 0 ⁇ or ⁇ O 1 , N t, 1 *O 1 , 2*N t, 1 *O 1 , 0, 0, 0 ⁇ or ⁇ N t, 1 *O 1 , 2*N t, 1 *O 1 , 3*N t, 1 *O 1 , 0, 0, 0 ⁇ .
  • the number of bits for i 2 may be In case of N 2, t >1 or N 2, s >1, the value of k 1, 1 , k 1, 2 , k 1, 3 , k 2, 1 and k 2, 2 and k 2, 3 may be ⁇ O 1 , 0, O 1 , 0, O 2 , O 2 ⁇ or ⁇ O 1 , 0, N t, 1 *O 1 , 0, O 2 , N t, 2 *O 2 ⁇ or ⁇ N t, 1 *O 1 , 0, N t, 1 *O 1 , 0, N t, 2 *O 2 , N t, 2 *O 2 ⁇ .
  • the value of k 1, 1 , k 1, 2 , k 1, 3 , k 2, 1 and k 2, 2 and k 2, 3 may be ⁇ O 1 , 2O 1 , 3O 1 , 0, 0, 0 ⁇ or ⁇ O 1 , N t, 1 *O 1 , 2*N t, 1 *O 1 , 0, 0, 0 ⁇ or ⁇ N t, 1 *O 1 , 2*N t, 1 *O 1 , 3*N t, 1 *O 1 , 0, 0, 0 ⁇ .
  • the measurement report may comprise at least one indication of the first plurality of first vectors or at least one indication of a plurality of groups of second vectors, and at least one indication of the second plurality of second vectors corresponding to the first plurality of first vectors or corresponding to the plurality of groups of second vectors.
  • the measurement report may comprise indication of the first plurality of first vectors (or indication of a plurality of groups of second vectors) , and at least one indication of the second plurality of second vectors corresponding to the first plurality of first vectors (or corresponding to the plurality of groups of second vectors.
  • the number of first vectors in the first plurality of first vectors or the number of groups of second vectors in the plurality of groups of second vectors is L 1 , where L 1 is a positive integer number.
  • L 1 is a positive integer number.
  • L 2 is a positive integer number.
  • L 2 ⁇ ⁇ 1, 2, 3, 4, 6, 8, 12, 16 ⁇ is a positive integer number.
  • N t may represent the number of reference signal resources in the first plurality of reference signal resources, for example, L 1 ⁇ L 2 .
  • more than one second vector corresponds to one first vector or selected from one group of second vectors, for example, L 1 ⁇ L 2 .
  • the number of the at least one indication of the second plurality of second vectors may be L 1
  • each indication may comprise N t, 1 *N t, 2 candidate values or bits or the field for the at least one indication may comprise bits.
  • FIG. 7B independent selection of second vector corresponding to each one of the first vector.
  • the number of the at least one indication of the second plurality of second vectors may be 1, the indication may comprise N t, 1 *N t, 2 candidate values or bits or the field for the at least one indication may comprise bits.
  • FIG. 7C common selection of second vector corresponding to each one of the first vector.
  • each one of the first plurality of first vectors or each group of second vectors there may be at least one second vector corresponding to the one of the first plurality of first vectors or the group of second vectors.
  • there may be at least one second vector e.g. the number of the at least one second vector may be represented as L g , L g may be positive integer.
  • 1 ⁇ L g ⁇ N t corresponding to the one of the first plurality of first vectors or the group of second vectors (e.g. L 1 ⁇ L 2 ) .
  • a first amplitude coefficient and/or a first phase coefficient corresponds to one second vector of the at least one second vector corresponding to the one of the first plurality of first vectors or the group of the second vectors.
  • a second amplitude coefficient and/or a second phase coefficient corresponds to remaining l g -1 second vectors of the at least one second vector corresponding to the one of the first plurality of first vectors or the group of the second vectors, where L g represents the number of second vectors in the at least one second vectors.
  • the amplitude corresponding to the L g -1 second vector may be differential value related to the first amplitude coefficient corresponding to the one second vector.
  • the number of candidate values or a bit size for indication of the first amplitude coefficient is larger than the number of candidate values or the bit size for the indication of the second amplitude coefficient, for example, 4 bits for first amplitude coefficient, 2 or 3 bits for second amplitude coefficient.
  • the number of candidates values or a bit size for the indication of the first phase coefficient is larger than the number of candidate values or the bit size for the indication of the second phase coefficient.
  • the measurement report comprises at least one indication of a first plurality of groups of first vectors.
  • Each group of first vectors may correspond to one reference signal resource in the first or second plurality of reference signal resources, and a first plurality of phase coefficient across the reference signal resources in the first or second plurality of reference signal resources.
  • the measurement report may comprise at least one indication of a first plurality of groups of first vectors (the number of the groups of first vectors may be 1 or N t or N s ) , wherein each group of first vectors may correspond to one CSI-RS resource in the first or second plurality of CSI-RS resources, and a first plurality of phase coefficient across the CSI-RS resources in the first or second plurality of CSI-RS resources.
  • the groups of first vectors corresponding to each one reference signal resource in the first or second plurality of reference signal resources are same or different.
  • the measurement report further comprises at least one offset, where each offset corresponds to one or all first vectors in the group of first vectors.
  • the measurement report may further comprise at least one offset (the number of the at least one offset may be N t -1 or N s -1 or L 1 * (N t -1) or L 1 * (N s -1) ) , wherein each offset may correspond to one or all first vectors in the group of first vectors.
  • the measurement report at least comprises: a third plurality of third vectors (e.g., represented as L s , L s ⁇ ⁇ 1, 2, 3, 4, 6, 8 ⁇ ) based on information of a second plurality of reference signal resources (or second plurality of groups of ports) and/or a first plurality of phase coefficients based on information of the second plurality of reference signal resource (or second plurality of groups of ports) .
  • the second plurality of reference signal resources may be same as or a subset of the first plurality of reference signal resources.
  • one third vector may be based on a third value in the first dimension and a third value in the second dimension.
  • FIG. 8 shows an example of CSI-RS pattern, where two CSI-RS resources are in the first plurality of CSI-RS resources.
  • the information of the second plurality of reference signal resources may include at least one of: the number of reference signal resources in the second plurality of reference signal resources, indexes or order of the reference signal resources selected in the first plurality of reference signal resources.
  • a third plurality of third vectors based on the second plurality of reference signal resources further comprises: a first length of each one of the third plurality of third vectors may be based on the information of the second plurality of reference signal resources.
  • the third plurality of third vectors based on the first plurality of CSI-RS resources may further comprise: a first length (or the third value in first dimension and the third value in second dimension) of each one of the third plurality of third vectors may be based on the information of the first plurality of CSI-RS resources.
  • the first plurality of phase coefficients based on the second plurality of reference signal resources further comprises: the candidate values and/or the range or bit size of the indication of one of the first plurality of phase coefficients may be based on the information of the second plurality of reference signal resources.
  • the first plurality of phase coefficients based on the second plurality of CSI-RS resources may further comprise: the candidate values and/or the range or bit size of the indication of one of the first plurality of phase coefficients may be based on the information of the second plurality of CSI-RS resources.
  • the measurement report further comprises: an indication of the second plurality of reference signal resources, and candidate values for the indication may be based on the at least one configuration.
  • the indication of the second plurality of CSI-RS resources may only indicate the number of CSI-RS resources (or the value of N s ) .
  • indication of ⁇ 1, 2, ...N t ⁇ or ⁇ 1, 2, ...N s ⁇ may be only one value to indicate one CSI-RS resource included in the second plurality of CSI-RS resources.
  • the one CSI-RS resource may be assumed to be the first one or the one with lowest/highest ID.
  • the two CSI-RS resources may be assumed to be the first two (i.e. first and second) or the two with lowest/highest ID.
  • first value may indicate first and second CSI-RS resources.
  • second value may indicate first and third CSI-RS resources.
  • third value may indicate first and fourth CSI-RS resources.
  • the three CSI-RS resources may be assumed to be the first three (i.e. first and second and third) or the three with lowest/highest ID.
  • the first value of subband size may be smaller than or no larger than the second value of subband size.
  • the first value of subband size may be at least one of ⁇ 1, 2, 4, 8, 16, 32 ⁇ .
  • the second value of subband size may be at least one of ⁇ 4, 8, 16, 32 ⁇
  • the first value of R may be larger than or no less than the second value of R.
  • the first value of R may be 2 or 4.
  • the second value of R may be 1 or 2.
  • subset of the rows and/or subset of the columns in the Table 9 may be applied for the at least one configuration for 64 ports. It is noted that Table 9 is only an example.
  • FIG. 9 illustrates a flowchart of a communication method 900 implemented at a terminal device, in accordance with some embodiments of the present disclosure.
  • the method 900 will be described from the perspective of the terminal device 110 in FIG. 1.
  • the terminal device 110 receives, from a network device 120, at least one configuration for a measurement report.
  • the at least one configuration comprises a first plurality of reference signal resources, an indication of a pattern and at least one codebook subset restriction. Each of the at least one codebook subset restriction is associated with one reference signal resource.
  • the at least one configuration for the measurement report comprises a first value in a first dimension and a first value in a second dimension.
  • the terminal device 110 determines a second value in the first dimension and a second value in the second dimension based on the indication of the pattern.
  • the terminal device 110 transmits, to the network device 120, the measurement report based on the at least one configuration, the second value in first dimension and the second value in the second dimension.
  • FIG. 10 illustrates a flowchart of a communication method 1000 implemented at a network device, in accordance with some embodiments of the present disclosure. For the purpose of discussion, the method 1000 will be described from the perspective of the network device 120 in FIG. 1.
  • the network device 120 transmits, to a terminal device 110, at least one configuration for a measurement report.
  • the at least one configuration comprises a first plurality of reference signal resources, an indication of a pattern and at least one codebook subset restriction. Each of the at least one codebook subset restriction is associated with one reference signal resource.
  • the at least one configuration for the measurement report comprises a first value in a first dimension and a first value in a second dimension, and wherein a second value in the first dimension and a second value in the second dimension are based on the indication of the pattern.
  • the network device 120 receives, from the terminal device 110, the measurement report based on the at least one configuration.
  • FIG. 11 illustrates a flowchart of a communication method 1100 implemented at a terminal device, in accordance with some embodiments of the present disclosure. For the purpose of discussion, the method 1100 will be described from the perspective of the terminal device 110 in FIG. 1.
  • the terminal device 110 receives, from a network device 120, at least one configuration for a measurement report.
  • the at least one configuration comprises a first plurality of reference signal resources, a first value in a first dimension and a first value in a second dimension.
  • the terminal device 110 transmits, to the network device 120, the measurement report based on the at least one configuration.
  • the measurement report comprises a first plurality of first vectors and a second plurality of second vectors. Each first vector is based on the first value in the first dimension and the first value in the second dimension, each second vector is based on a second value in the first dimension and a second value in the second dimension, and the second plurality of second vectors is based on the first plurality of first vectors.
  • FIG. 12 illustrates a flowchart of a communication method 1200 implemented at a network device, in accordance with some embodiments of the present disclosure. For the purpose of discussion, the method 1200 will be described from the perspective of the network device 120 in FIG. 1.
  • the network device 120 transmits, to a terminal device 110, at least one configuration for a measurement report.
  • the at least one configuration comprises a first plurality of reference signal resources, a first value in a first dimension and a first value in a second dimension.
  • the network device 120 receives, from the terminal device 110, the measurement report based on the at least one configuration.
  • the measurement report comprises a first plurality of first vectors and a second plurality of second vectors.
  • Each first vector is based on the first value in the first dimension and the first value in the second dimension
  • each second vector is based on a second value in the first dimension and a second value in the second dimension
  • the second plurality of second vectors is based on the first plurality of first vectors.
  • FIG. 13 is a simplified block diagram of a device 1300 that is suitable for implementing embodiments of the present disclosure.
  • the device 1300 can be considered as a further example implementation of any of the devices as shown in FIG. 1. Accordingly, the device 1300 can be implemented at or as at least a part of the terminal device 110 or the network device 120.
  • the device 1300 includes a processor 1310, a memory 1320 coupled to the processor 1310, a suitable transceiver 1340 coupled to the processor 1310, and a communication interface coupled to the transceiver 1340.
  • the memory 1320 stores at least a part of a program 1330.
  • the transceiver 1340 may be for bidirectional communications or a unidirectional communication based on requirements.
  • the transceiver 1340 may include at least one of a transmitter 1342 and a receiver 1344.
  • the transmitter 1342 and the receiver 1344 may be functional modules or physical entities.
  • the transceiver 1340 has at least one antenna to facilitate communication, though in practice an Access Node mentioned in this application may have several ones.
  • the communication interface may represent any interface that is necessary for communication with other network elements, such as X2/Xn interface for bidirectional communications between eNBs/gNBs, S1/NG interface for communication between a Mobility Management Entity (MME) /Access and Mobility Management Function (AMF) /SGW/UPF and the eNB/gNB, Un interface for communication between the eNB/gNB and a relay node (RN) , or Uu interface for communication between the eNB/gNB and a terminal device.
  • MME Mobility Management Entity
  • AMF Access and Mobility Management Function
  • RN relay node
  • Uu interface for communication between the eNB/gNB and a terminal device.
  • the program 1330 is assumed to include program instructions that, when executed by the associated processor 1310, enable the device 1300 to operate in accordance with the embodiments of the present disclosure, as discussed herein with reference to FIGS. 1 to 12.
  • the embodiments herein may be implemented by computer software executable by the processor 1310 of the device 1300, or by hardware, or by a combination of software and hardware.
  • the processor 1310 may be configured to implement various embodiments of the present disclosure.
  • a combination of the processor 1310 and memory 1320 may form processing means 1350 adapted to implement various embodiments of the present disclosure.
  • the memory 1320 may be of any type suitable to the local technical network and may be implemented using any suitable data storage technology, such as a non-transitory computer readable storage medium, semiconductor based memory devices, magnetic memory devices and systems, optical memory devices and systems, fixed memory and removable memory, as non-limiting examples. While only one memory 1320 is shown in the device 1300, there may be several physically distinct memory modules in the device 1300.
  • the processor 1310 may be of any type suitable to the local technical network, and may include one or more of general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and processors based on multicore processor architecture, as non-limiting examples.
  • the device 1300 may have multiple processors, such as an application specific integrated circuit chip that is slaved in time to a clock which synchronizes the main processor.
  • a terminal device comprising a circuitry.
  • the circuitry is configured to: receive, from a network device, at least one configuration for a measurement report, wherein the at least one configuration comprises a first plurality of reference signal resources, an indication of a pattern and at least one codebook subset restriction, wherein each of the at least one codebook subset restriction is associated with one reference signal resource, wherein the at least one configuration for the measurement report comprises a first value in a first dimension and a first value in a second dimension; determine, a second value in the first dimension and a second value in the second dimension based on the indication of the pattern; and transmit, to the network device, the measurement report based on the at least one configuration, the second value in first dimension and the second value in the second dimension.
  • the circuitry may be configured to perform any method implemented by the terminal device, as discussed above.
  • a network device comprising a circuitry.
  • the circuitry is configured to: transmit, to a terminal device, at least one configuration for a measurement report, wherein the at least one configuration comprises a first plurality of reference signal resources, an indication of a pattern and at least one codebook subset restriction, wherein each of the at least one codebook subset restriction is associated with one reference signal resource, wherein the at least one configuration for the measurement report comprises a first value in a first dimension and a first value in a second dimension, and wherein a second value in the first dimension and a second value in the second dimension are based on the indication of the pattern; and receive, from the terminal device, the measurement report based on the at least one configuration.
  • the circuitry may be configured to perform any method implemented by the network device, as discussed above.
  • circuitry used herein may refer to hardware circuits and/or combinations of hardware circuits and software.
  • the circuitry may be a combination of analog and/or digital hardware circuits with software/firmware.
  • the circuitry may be any portions of hardware processors with software including digital signal processor (s) , software, and memory (ies) that work together to cause an apparatus, such as a terminal device or a network device, to perform various functions.
  • the circuitry may be hardware circuits and or processors, such as a microprocessor or a portion of a microprocessor, that requires software/firmware for operation, but the software may not be present when it is not needed for operation.
  • the term circuitry also covers an implementation of merely a hardware circuit or processor (s) or a portion of a hardware circuit or processor (s) and its (or their) accompanying software and/or firmware.
  • a terminal apparatus comprises means for receiving, from a network device, at least one configuration for a measurement report, wherein the at least one configuration comprises a first plurality of reference signal resources, an indication of a pattern and at least one codebook subset restriction, wherein each of the at least one codebook subset restriction is associated with one reference signal resource, wherein the at least one configuration for the measurement report comprises a first value in a first dimension and a first value in a second dimension; means for determining, a second value in the first dimension and a second value in the second dimension based on the indication of the pattern; and means for transmitting, to the network device, the measurement report based on the at least one configuration, the second value in first dimension and the second value in the second dimension.
  • the first apparatus may comprise means for performing the respective operations of the method 900. In some example embodiments, the first apparatus may further comprise means for performing other operations in some example embodiments of the method 900.
  • the means may be implemented in any suitable form. For example, the means may be implemented in a circuitry or software module.
  • a network apparatus comprises means for transmitting, to a terminal device, at least one configuration for a measurement report, wherein the at least one configuration comprises a first plurality of reference signal resources, an indication of a pattern and at least one codebook subset restriction, wherein each of the at least one codebook subset restriction is associated with one reference signal resource, wherein the at least one configuration for the measurement report comprises a first value in a first dimension and a first value in a second dimension, and wherein a second value in the first dimension and a second value in the second dimension are based on the indication of the pattern; and means for receiving, from the terminal device, the measurement report based on the at least one configuration.
  • the second apparatus may comprise means for performing the respective operations of the method 1000. In some example embodiments, the second apparatus may further comprise means for performing other operations in some example embodiments of the method 1000.
  • the means may be implemented in any suitable form. For example, the means may be implemented in a circuitry or software module.
  • a terminal device comprising: a processor, configured to cause the terminal device to: receive, from a network device, at least one configuration for a measurement report, wherein the at least one configuration comprises a first plurality of reference signal resources, an indication of a pattern and at least one codebook subset restriction, wherein each of the at least one codebook subset restriction is associated with one reference signal resource, wherein the at least one configuration for the measurement report comprises a first value in a first dimension and a first value in a second dimension; determine, a second value in the first dimension and a second value in the second dimension based on the indication of the pattern; and transmit, to the network device, the measurement report based on the at least one configuration, the second value in first dimension and the second value in the second dimension.
  • a network device comprising: a processor, configured to cause the network device to: transmit, to a terminal device, at least one configuration for a measurement report, wherein the at least one configuration comprises a first plurality of reference signal resources, an indication of a pattern and at least one codebook subset restriction, wherein each of the at least one codebook subset restriction is associated with one reference signal resource, wherein the at least one configuration for the measurement report comprises a first value in a first dimension and a first value in a second dimension, and wherein a second value in the first dimension and a second value in the second dimension are based on the indication of the pattern; and receive, from the terminal device, the measurement report based on the at least one configuration.
  • a terminal device comprises: at least one processor; and at least one memory coupled to the at least one processor and storing instructions thereon, the instructions, when executed by the at least one processor, causing the device to perform the method implemented by the terminal device, discussed above.
  • a network device comprises: at least one processor; and at least one memory coupled to the at least one processor and storing instructions thereon, the instructions, when executed by the at least one processor, causing the device to perform the method implemented by the network device, discussed above.
  • a computer readable medium having instructions stored thereon, the instructions, when executed on at least one processor, causing the at least one processor to perform the method implemented by the terminal device, discussed above.
  • a computer readable medium having instructions stored thereon, the instructions, when executed on at least one processor, causing the at least one processor to perform the method implemented by the network device, discussed above.
  • a computer program comprising instructions, the instructions, when executed on at least one processor, causing the at least one processor to perform the method implemented by the terminal device, discussed above.
  • a computer program comprising instructions, the instructions, when executed on at least one processor, causing the at least one processor to perform the method implemented by the network device, discussed above.
  • a terminal device comprising a circuitry.
  • the circuitry is configured to: receive, from a network device, at least one configuration for a measurement report, wherein the at least one configuration comprises a first plurality of reference signal resources, a first value in a first dimension and a first value in a second dimension; and transmit, to the network device, the measurement report based on the at least one configuration, wherein the measurement report comprises a first plurality of first vectors and a second plurality of second vectors, wherein each first vector is based on the first value in the first dimension and the first value in the second dimension, each second vector is based on a second value in the first dimension and a second value in the second dimension, and the second plurality of second vectors is based on the first plurality of first vectors.
  • the circuitry may be configured to perform any method implemented by the terminal device, as discussed above.
  • a network device comprising a circuitry.
  • the circuitry is configured to: transmit, to a terminal device, at least one configuration for a measurement report, wherein the at least one configuration comprises a first plurality of reference signal resources, a first value in a first dimension and a first value in a second dimension; and receive, from the terminal device, the measurement report based on the at least one configuration, wherein the measurement report comprises a first plurality of first vectors and a second plurality of second vectors, wherein each first vector is based on the first value in the first dimension and the first value in the second dimension, each second vector is based on a second value in the first dimension and a second value in the second dimension, and the second plurality of second vectors is based on the first plurality of first vectors.
  • the circuitry may be configured to perform any method implemented by the network device, as discussed above.
  • a terminal apparatus comprises means for receiving, from a network device, at least one configuration for a measurement report, wherein the at least one configuration comprises a first plurality of reference signal resources, a first value in a first dimension and a first value in a second dimension; and means for transmitting, to the network device, the measurement report based on the at least one configuration, wherein the measurement report comprises a first plurality of first vectors and a second plurality of second vectors, wherein each first vector is based on the first value in the first dimension and the first value in the second dimension, each second vector is based on a second value in the first dimension and a second value in the second dimension, and the second plurality of second vectors is based on the first plurality of first vectors.
  • the first apparatus may comprise means for performing the respective operations of the method 1100. In some example embodiments, the first apparatus may further comprise means for performing other operations in some example embodiments of the method 1100.
  • the means may be implemented in any suitable form. For example, the means may be implemented in a circuitry or software module.
  • a network apparatus comprises means for transmitting, to a terminal device, at least one configuration for a measurement report, wherein the at least one configuration comprises a first plurality of reference signal resources, a first value in a first dimension and a first value in a second dimension; and means for receiving, from the terminal device, the measurement report based on the at least one configuration, wherein the measurement report comprises a first plurality of first vectors and a second plurality of second vectors, wherein each first vector is based on the first value in the first dimension and the first value in the second dimension, each second vector is based on a second value in the first dimension and a second value in the second dimension, and the second plurality of second vectors is based on the first plurality of first vectors.
  • the second apparatus may comprise means for performing the respective operations of the method 1200. In some example embodiments, the second apparatus may further comprise means for performing other operations in some example embodiments of the method 1200.
  • the means may be implemented in any suitable form. For example, the means may be implemented in a circuitry or software module.
  • a terminal device comprises: at least one processor; and at least one memory coupled to the at least one processor and storing instructions thereon, the instructions, when executed by the at least one processor, causing the device to perform the method implemented by the terminal device, discussed above.
  • a network device comprises: at least one processor; and at least one memory coupled to the at least one processor and storing instructions thereon, the instructions, when executed by the at least one processor, causing the device to perform the method implemented by the network device, discussed above.
  • a computer readable medium having instructions stored thereon, the instructions, when executed on at least one processor, causing the at least one processor to perform the method implemented by the terminal device, discussed above.
  • a computer readable medium having instructions stored thereon, the instructions, when executed on at least one processor, causing the at least one processor to perform the method implemented by the network device, discussed above.
  • a computer program comprising instructions, the instructions, when executed on at least one processor, causing the at least one processor to perform the method implemented by the terminal device, discussed above.
  • a computer program comprising instructions, the instructions, when executed on at least one processor, causing the at least one processor to perform the method implemented by the network device, discussed above.
  • various embodiments of the present disclosure may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. Some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device. While various aspects of embodiments of the present disclosure are illustrated and described as block diagrams, flowcharts, or using some other pictorial representation, it will be appreciated that the blocks, apparatus, systems, techniques or methods described herein may be implemented in, as non-limiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof.
  • the present disclosure also provides at least one computer program product tangibly stored on a non-transitory computer readable storage medium.
  • the computer program product includes computer-executable instructions, such as those included in program modules, being executed in a device on a target real or virtual processor, to carry out the process or method as described above with reference to FIGS. 1 to 8.
  • program modules include routines, programs, libraries, objects, classes, components, data structures, or the like that perform particular tasks or implement particular abstract data types.
  • the functionality of the program modules may be combined or split between program modules as desired in various embodiments.
  • Machine-executable instructions for program modules may be executed within a local or distributed device. In a distributed device, program modules may be located in both local and remote storage media.
  • Program code for carrying out methods of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the program codes, when executed by the processor or controller, cause the functions/operations specified in the flowcharts and/or block diagrams to be implemented.
  • the program code may execute entirely on a machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
  • the above program code may be embodied on a machine readable medium, which may be any tangible medium that may contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
  • the machine readable medium may be a machine readable signal medium or a machine readable storage medium.
  • a machine readable medium may include but not limited to an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing.
  • machine readable storage medium More specific examples of the machine readable storage medium would include an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM) , a read-only memory (ROM) , an erasable programmable read-only memory (EPROM or Flash memory) , an optical fiber, a portable compact disc read-only memory (CD-ROM) , an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
  • RAM random access memory
  • ROM read-only memory
  • EPROM or Flash memory erasable programmable read-only memory
  • CD-ROM portable compact disc read-only memory
  • magnetic storage device or any suitable combination of the foregoing.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Des modes de réalisation de la présente divulgation fournissent une solution pour une configuration de mesure. Un dispositif terminal reçoit, de la part d'un dispositif de réseau, au moins une configuration pour un rapport de mesure, ladite au moins une configuration comprenant une première pluralité de ressources de signal de référence, une première valeur dans une première dimension et une première valeur dans une seconde dimension. Le dispositif terminal transmet, au dispositif de réseau, le rapport de mesure sur la base de ladite au moins une configuration, le rapport de mesure contenant une première pluralité de premiers vecteurs et une seconde pluralité de seconds vecteurs, chaque premier vecteur étant basé sur la première valeur dans la première dimension et la première valeur dans la seconde dimension, chaque second vecteur étant basé sur une seconde valeur dans la première dimension et une seconde valeur dans la seconde dimension, et la seconde pluralité de seconds vecteurs étant basée sur la première pluralité de premiers vecteurs.
PCT/CN2023/113624 2023-08-17 2023-08-17 Procédé, dispositif et support de stockage informatique de communication Pending WO2025035470A1 (fr)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108352875A (zh) * 2015-11-06 2018-07-31 华为技术有限公司 一种预编码矩阵索引的传输方法及装置
US20180219603A1 (en) * 2015-07-23 2018-08-02 Lg Electronics Inc. Codebook-based signal transmission/reception method in multi-antenna wireless communication system, and device for same
EP4099592A1 (fr) * 2020-01-29 2022-12-07 LG Electronics Inc. Procédé et appareil d'émission et de réception d'informations d'état de canal dans un système de communication sans fil

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180219603A1 (en) * 2015-07-23 2018-08-02 Lg Electronics Inc. Codebook-based signal transmission/reception method in multi-antenna wireless communication system, and device for same
CN108352875A (zh) * 2015-11-06 2018-07-31 华为技术有限公司 一种预编码矩阵索引的传输方法及装置
EP4099592A1 (fr) * 2020-01-29 2022-12-07 LG Electronics Inc. Procédé et appareil d'émission et de réception d'informations d'état de canal dans un système de communication sans fil

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