[go: up one dir, main page]

WO2021165767A1 - Déclenchement d'informations d'état de canal - Google Patents

Déclenchement d'informations d'état de canal Download PDF

Info

Publication number
WO2021165767A1
WO2021165767A1 PCT/IB2021/050800 IB2021050800W WO2021165767A1 WO 2021165767 A1 WO2021165767 A1 WO 2021165767A1 IB 2021050800 W IB2021050800 W IB 2021050800W WO 2021165767 A1 WO2021165767 A1 WO 2021165767A1
Authority
WO
WIPO (PCT)
Prior art keywords
state information
channel state
reporting
transmission
csi
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IB2021/050800
Other languages
English (en)
Inventor
Salah Eddine HAJRI
Filippo Tosato
William Hillery
Keeth Saliya Jayasinghe LADDU
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Technologies Oy
Original Assignee
Nokia Technologies Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nokia Technologies Oy filed Critical Nokia Technologies Oy
Publication of WO2021165767A1 publication Critical patent/WO2021165767A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • 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
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI
    • 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
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035—Resource allocation in a cooperative multipoint environment

Definitions

  • Some example embodiments may generally relate to mobile or wireless telecommunication systems, such as Long Term Evolution (LTE) or fifth generation (5G) radio access technology or new radio (NR) access technology, or other communications systems.
  • LTE Long Term Evolution
  • 5G fifth generation
  • NR new radio
  • certain example embodiments may relate to apparatuses, systems, and/or methods for channel state information (CSI) triggering.
  • CSI channel state information
  • Examples of mobile or wireless telecommunication systems may include the Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (UTRAN), Long Term Evolution (LTE) Evolved UTRAN (E-UTRAN), LTE-Advanced (LTE- A), MulteFire, LTE- A Pro, and/or fifth generation (5G) radio access technology or new radio (NR) access technology.
  • UMTS Universal Mobile Telecommunications System
  • UTRAN Universal Mobile Telecommunications System
  • LTE Long Term Evolution
  • E-UTRAN Evolved UTRAN
  • LTE-A LTE-Advanced
  • MulteFire LTE- A Pro
  • LTE- A Pro new radio
  • Fifth generation (5G) wireless systems refer to the next generation (NG) of radio systems and network architecture.
  • 5G is mostly built on a new radio (NR), but the 5G (or NG) network can also build on E-UTRAN radio.
  • NR will provide bitrates on the order of 10-20 Gbit/s or higher, and will support at least enhanced mobile broadband (eMBB) and ultra-reliable low-latency- communication (URLLC) as well as massive machine type communication (mMTC).
  • eMBB enhanced mobile broadband
  • URLLC ultra-reliable low-latency- communication
  • mMTC massive machine type communication
  • NR is expected to deliver extreme broadband and ultra-robust, low latency connectivity and massive networking to support the Internet of Things (IoT).
  • IoT Internet of Things
  • M2M machine-to-machine
  • the nodes that can provide radio access functionality to a user equipment are named gNB when built on NR radio and named NG-eNB when built on E-UTRAN radio.
  • Some example embodiments are directed to a method.
  • the method may include receiving from a network element, a downlink scheduling downlink control information (DCI) that indicates a single or multiple transmission configuration indicator (TCI) states.
  • the method may also include receiving from the network element, an uplink grant DCI comprising an indication of a trigger state for aperiodic or semi-persistent channel state information (CSI) reporting.
  • the method may further include selecting a single or multiple CSI reporting configurations associated with the indicated trigger state based on a number of indicated TCI states in the downlink scheduling DCI.
  • the method may include performing CSI measurements based on the selected CSI reporting configuration.
  • the method may also include transmitting a single or multiple CSI reports to the network element according to the selected CSI reporting configuration.
  • FIG. 1 Other example embodiments are directed to an apparatus that may include at least one processor and at least one memory including computer program code.
  • the at least one memory and the computer program code are configured, with the at least one processor to cause the apparatus at least to receive from a network element, a downlink scheduling downlink control information (DCI) that indicates a single or multiple transmission configuration indicator (TCI) states.
  • DCI downlink scheduling downlink control information
  • TCI transmission configuration indicator
  • the apparatus may also be caused to receive from the network element, an uplink grant DCI comprising an indication of a trigger state for aperiodic or semi-persistent channel state information (CSI) reporting.
  • the apparatus may further be caused to select a single or multiple CSI reporting configurations associated with the indicated trigger state based on a number of indicated TCI states in the downlink scheduling DCI.
  • CSI channel state information
  • the apparatus may be caused to perform CSI measurements based on the selected CSI reporting configuration. Further, the apparatus may be caused to transmit a single or multiple CSI reports to the network element according to the selected CSI reporting configuration.
  • DCI downlink scheduling downlink control information
  • TCI transmission configuration indicator
  • Other example embodiments are directed to an apparatus.
  • the apparatus may include means for receiving from a network element, a downlink scheduling downlink control information (DCI) that indicates a single or multiple transmission configuration indicator (TCI) states.
  • the apparatus may also include means for receiving from the network element, an uplink grant DCI comprising an indication of a trigger state for aperiodic or semi-persistent channel state information (CSI) reporting.
  • CSI channel state information
  • the apparatus may further include means for selecting a single or multiple CSI reporting configurations associated with the indicated trigger state based on a number of indicated TCI states in the downlink scheduling DCI.
  • the apparatus may include means for performing CSI measurements based on the selected CSI reporting configuration.
  • the apparatus may include means for transmitting a single or multiple CSI reports to the network element according to the selected CSI reporting configuration.
  • a non-transitory computer readable medium may be encoded with instructions that may, when executed in hardware, perform a method.
  • the method may include receiving from a network element, a downlink scheduling downlink control information (DCI) that indicates a single or multiple transmission configuration indicator (TCI) states.
  • the method may also include receiving from the network element, an uplink grant DCI comprising an indication of a trigger state for aperiodic or semi-persistent channel state information (CSI) reporting.
  • the method may further include selecting a single or multiple CSI reporting configurations associated with the indicated trigger state based on a number of indicated TCI states in the downlink scheduling DCI.
  • the method may include performing CSI measurements based on the selected CSI reporting configuration.
  • the method may also include transmitting a single or multiple CSI reports to the network element according to the selected CSI reporting configuration.
  • Other example embodiments may be directed to a computer program product that performs a method.
  • the method may include receiving from a network element, a downlink scheduling downlink control information (DCI) that indicates a single or multiple transmission configuration indicator (TCI) states.
  • the method may also include receiving from the network element, an uplink grant DCI comprising an indication of a trigger state for aperiodic or semi-persistent channel state information (CSI) reporting.
  • the method may further include selecting a single or multiple CSI reporting configurations associated with the indicated trigger state based on a number of indicated TCI states in the downlink scheduling DCI.
  • the method may include performing CSI measurements based on the selected CSI reporting configuration.
  • the method may also include transmitting a single or multiple CSI reports to the network element according to the selected CSI reporting configuration.
  • Other example embodiments may be directed to an apparatus that may include circuitry configured to receive from a network element, a downlink scheduling downlink control information (DCI) that indicates a single or multiple transmission configuration indicator (TCI) states.
  • the apparatus may also include circuitry configured to receive from the network element, an uplink grant DCI comprising an indication of a trigger state for aperiodic or semi-persistent channel state information (CSI) reporting.
  • the apparatus may further include circuitry configured to select a single or multiple CSI reporting configurations associated with the indicated trigger state based on a number of indicated TCI states in the downlink scheduling DCI.
  • the apparatus may include circuitry configured to perform CSI measurements based on the selected CSI reporting configuration.
  • the apparatus may include circuitry configured to transmit a single or multiple CSI reports to the network element according to the selected CSI reporting configuration.
  • Certain example embodiments may be directed to a method.
  • the method may include configuring a user equipment with trigger states and their associated channel state information (CSI) reporting configurations.
  • the method may also include transmitting to the user equipment downlink scheduling downlink control information (DCI) that indicates a single or multiple transmission configuration indicator (TCI) states.
  • DCI downlink scheduling downlink control information
  • TCI transmission configuration indicator
  • the method may further include triggering CSI reporting from the user equipment by indicating a trigger state for aperiodic or semi-persistent CSI reporting in an uplink grant DCI.
  • the method may include receiving a single or multiple CSI reports from the user equipment according to a selected CSI reporting configuration by the user equipment.
  • the apparatus may include at least one processor and at least one memory including computer program code.
  • the at least one memory and computer program code may be configured to, with the at least one processor, cause the apparatus at least to configure a user equipment with trigger states and their associated channel state information (CSI) reporting configurations.
  • the apparatus may also be caused to transmit to the user equipment downlink scheduling downlink control information (DCI) that indicates a single or multiple transmission configuration indicator (TCI) states.
  • DCI downlink scheduling downlink control information
  • TCI transmission configuration indicator
  • the apparatus may further be caused to trigger CSI reporting from the user equipment by indicating a trigger state for aperiodic or semi- persistent CSI reporting in an uplink grant DCI.
  • the apparatus may be caused to receive a single or multiple CSI reports from the user equipment according to a selected CSI reporting configuration by the user equipment.
  • the apparatus may include means for configuring a user equipment with trigger states and their associated channel state information (CSI) reporting configurations.
  • the apparatus may also include means for transmitting to the user equipment downlink scheduling downlink control information (DCI) that indicates a single or multiple transmission configuration indicator (TCI) states.
  • DCI downlink scheduling downlink control information
  • TCI transmission configuration indicator
  • the apparatus may further include means for triggering CSI reporting from the user equipment by indicating a trigger state for aperiodic or semi-persistent CSI reporting in an uplink grant DCI.
  • the apparatus may include means for receiving a single or multiple CSI reports from the user equipment according to a selected CSI reporting configuration by the user equipment.
  • a non-transitory computer readable medium may be encoded with instructions that may, when executed in hardware, perform a method.
  • the method may include configuring a user equipment with trigger states and their associated channel state information (CSI) reporting configurations.
  • the method may also include transmitting to the user equipment downlink scheduling downlink control information (DCI) that indicates a single or multiple transmission configuration indicator (TCI) states.
  • DCI downlink scheduling downlink control information
  • TCI transmission configuration indicator
  • the method may further include triggering CSI reporting from the user equipment by indicating a trigger state for aperiodic or semi- persistent CSI reporting in an uplink grant DCI.
  • the method may include receiving a single or multiple CSI reports from the user equipment according to a selected CSI reporting configuration by the user equipment.
  • the method may include configuring a user equipment with trigger states and their associated channel state information (CSI) reporting configurations.
  • the method may also include transmitting to the user equipment downlink scheduling downlink control information (DCI) that indicates a single or multiple transmission configuration indicator (TCI) states.
  • DCI downlink scheduling downlink control information
  • TCI transmission configuration indicator
  • the method may further include triggering CSI reporting from the user equipment by indicating a trigger state for aperiodic or semi-persistent CSI reporting in an uplink grant DCI.
  • the method may include receiving a single or multiple CSI reports from the user equipment according to a selected CSI reporting configuration by the user equipment.
  • Other example embodiments may be directed to an apparatus that may include circuitry configured to configure configuring a user equipment with trigger states and their associated channel state information (CSI) reporting configurations.
  • the apparatus may also include circuitry configured to transmit to the user equipment downlink scheduling downlink control information (DCI) that indicates a single or multiple transmission configuration indicator (TCI) states.
  • DCI downlink scheduling downlink control information
  • TCI transmission configuration indicator
  • the apparatus may further include circuitry configured to trigger CSI reporting from the user equipment by indicating a trigger state for aperiodic or semi -persistent CSI reporting in an uplink grant DCI.
  • the apparatus may include circuitry configured to receive a single or multiple CSI reports from the user equipment according to a selected CSI reporting configuration by the user equipment.
  • FIG. 1 illustrates a channel state information (CSI) triggering scheme, according to an example embodiment.
  • CSI channel state information
  • FIG. 2 illustrates trigger states and associated CSI reporting configuration, according to an example embodiment.
  • FIG. 3 illustrates a flow diagram of a method, according to an example embodiment.
  • FIG. 4 illustrates a flow diagram of another method, according to an example embodiment.
  • FIG. 5(a) illustrates an apparatus, according to an example embodiment.
  • FIG. 5(b) illustrates another apparatus, according to an example embodiment.
  • Multi-transmission and reception point (multi-TRP) design has been described for enhanced mobile broadband (eMBB) and ultra-reliable low latency communications (URLLC) based on non coherent joint transmission.
  • the design may include, for example, single physical downlink control channel (PDCCH) based multi-TRP transmission, and multiple PDCCH based multi-TRP transmission.
  • PDCCH physical downlink control channel
  • NR new radio
  • Improvements of the support for multi-TRP have also been in discussion in radio access network 1 (RANI), including channel state information (CSI) reporting aspects.
  • RANI radio access network 1
  • CSI channel state information
  • Multi-TRP communication may provide certain benefits.
  • multi-TRP may be beneficial in terms of improved reliability due to the spatial diversity that it provides.
  • multi-TRP transmission scheme e.g., coherent joint transmission (CJT), non coherent joint transmission (NCJT), dynamic point selection (DPS), Coordinated beamforming (CB)/Coordinated scheduling (CS)
  • CJT coherent joint transmission
  • NCJT non coherent joint transmission
  • DPS dynamic point selection
  • CB Coordinated beamforming
  • CS Coordinated beamforming
  • the performance of any multi-TRP transmission scheme may depend on the accuracy of beamforming and link adaptation.
  • the availability of accurate CSI at the TRPs/gNB may be important. This may be provided by advanced NR codebooks.
  • UE user equipment
  • PMIs precoding matrix indicators
  • CQI channel quality indicator
  • two PMIs or a joint PMI may be provided for different cooperating TRPs/gNBs.
  • independent CSI reporting may be preferable as it may provide flexibility to dynamically control the uplink control information (UCI) payload. This may be implemented by enabling independent triggering PMI reporting for each of the TRPs. Additionally, independent CSI reporting for each TRP may have the benefit of being the natural extension of previous CSI reporting framework. Flowever, this option may introduce some ambiguity between TRPs and the UE, depending on the UE’s capabilities. For example, in the event of CSI omission due to insufficient physical uplink channel resources, the UE may provide an unequal number of coefficient groups from the CSI reports. Additionally, whether the CSI feedback is computed jointly or independently, the UE may be burdened with a non-negligible computational strain. Consequently, it may be desirable to carefully manage CSI reporting for multi-TRP in order to spare the network and the UE from superfluous measurements.
  • UCI uplink control information
  • periodic CSI reporting may be extensively penalizing in terms of overhead. As such, aperiodic or semi-persistent CSI reporting may be preferable over periodic CSI reporting.
  • the large number of trigger states may be due to CSI reports for different component carriers (CCs) or bandwidth parts (BWPs) being configured in different trigger states.
  • the UE may have to be configured with multiple trigger states to allow triggering CSI in different CCs/BWPs.
  • CCs/BWPs component carriers
  • multi-TRP CSI triggering may further increase the demand for trigger states.
  • certain example embodiments may provide an efficient and flexible aperiodic and semi-persistent CSI triggering framework, suitable for multi-TRP scenarios.
  • Each CSI reporting configuration may be linked to one or multiple periodic, aperiodic or semi-persistent downlink reference signal (DL-RS) resource settings. If one DL RS resource setting is linked to the CSI reporting configuration, the DL-RS resource setting may be used for channel measurements. If more than one DL-RS resource settings are linked to the CSI report configuration, one of the resource settings may be used for channel measurements and the remaining may be used for interference measurements, performed on non-zero power channel state information reference signal (NZP CSI-RS) or channel state information-interference measurement (CSI-IM).
  • NZP CSI-RS non-zero power channel state information reference signal
  • CSI-IM channel state information-interference measurement
  • a trigger state may be associated with different CSI reporting configurations. Each configuration may be linked to DL-RS resource settings, for channel measurement or interference measurement, containing DL-RS that are associated with more than one TRP. According to certain example embodiments, the UE may be configured to report CSIs based on the trigger state indicated by an uplink (UL) grant DCI (e.g., format 0_1 in 5G NR) indicating the trigger state.
  • UL uplink
  • the UE may determine which subset of channel measurement or interference measurement resources to consider during CSI computations based on whether the UE receives a DL scheduling DCI (e.g., format 1_1 in 5G NR) indicating a single TCI state, or a DL scheduling DCI indicating more than one TCI state.
  • a DL scheduling DCI e.g., format 1_1 in 5G NR
  • ah or a subset of channel measurement or interference measurement resources, linked to a CSI reporting configuration may be selected when a specific TCI state is indicated by a downlink scheduling DCI, in a single TCI state TCI codepoint or in a multiple-TCI state TCI codepoint.
  • all or a subset of channel measurement or interference measurement resources, linked to a CSI reporting configuration may be selected when a single TCI state is indicated by a downlink scheduling DCI, or when more than one TCI states are indicated by a downlink scheduling DCI, or regardless of the number of indicated TCI states by a downlink scheduling DCI.
  • Certain example embodiments may address at least the issues of aperiodic and semi- persistent CSI triggering for single downlink control information (DCI) based multi-TRP transmission. For instance, in certain example embodiments, this may be accomplished by enabling dynamic CSI triggering for single and multi-TRP while avoiding any increase in the number of trigger states for aperiodic and semi-persistent CSI reports when multiple TRPs are configured.
  • a trigger state may be associated with different sets of CSI reporting configurations.
  • the trigger state may be associated with CSI reporting configurations that are activated, only when a single TCI state is indicated in downlink scheduling DCI, or only when more than one TCI state is indicated in downlink scheduling DCI, or regardless of the number of indicated TCI states.
  • the UE may be configured to report CSIs based on the trigger state indicated by an uplink (UL) grant DCI (e.g., format 0_1 in 5G NR) indicating the trigger state.
  • UL uplink
  • the UE may determine which CSI reporting configuration set applies based on whether the UE receives a DL scheduling DCI (e.g., format 1_1 in 5G NR) indicating a single TCI state, or a DL scheduling DCI indicating more than one TCI state.
  • a CSI reporting configuration that is associated with the indicated trigger state, may be selected, only when a single TCI state is indicated by a downlink scheduling DCI, or only when more than one TCI state are indicated by a downlink scheduling DCI, or regardless of the number of indicated TCI states by a downlink scheduling DCI.
  • certain example embodiments may provide dynamic triggering to enable the network to efficiently manage PUSCH resources without sacrificing CSI accuracy.
  • FIG. 1 illustrates a CSI triggering scheme, according to an example embodiment.
  • a CSI triggering scheme for multi-TRP may be provided.
  • the UE may be configured with a set of trigger states for aperiodic or semi-persistent CSI reporting.
  • at least one of the trigger states may be associated with more than one CSI reporting configurations.
  • at least one of these configurations may be associated with DL-reference signal (RS) from more than one TRP.
  • RS DL-reference signal
  • the UE when the UE receives an UL grant DCI (e.g., DCI format 0_1 in 5G NR), the UE may select an appropriate set of CSI reporting configurations based on the latest decoded DL scheduling DCI (e.g., format 1_1 in 5G NR). According to an example embodiment, if the received DL scheduling DCI indicates more than one TCI state, the UE may assume multi-TRP CSI reporting. The UE may also apply the CSI reporting configuration set that is associated with the received trigger state in UL grant DCI, and is configured to be activated when more than one TCI state is indicated, or to be used regardless of the number of indicated TCI states.
  • DCI e.g., DCI format 0_1 in 5G NR
  • multi-TRP CSI reporting may include any combination of CSI quantities for cooperating TRPs. This may include, but not limited to, for example, PMIs, CQIs, strongest layer indicator (SLI), channel state information reference signal (CSI-RS) resource indicator (CRI), Ll-reference signal received power (RSRP), and rank indicator (RI).
  • SLI strongest layer indicator
  • CSI-RS channel state information reference signal
  • CRI resource indicator
  • RSRP Ll-reference signal received power
  • RI rank indicator
  • the gNBs/TRPs may still be capable of correctly predicting the payload of UL control information containing the CSI report based on an implicit or explicit indication in UCI part 1 (e.g., number of RIs).
  • the gNB receiving UCI may conclude that the UE applied CSI reporting configurations that specify, the feedback of two RIs, which may typically be the case when NCJT is scheduled or considered for scheduling. This means that the gNB can deduce if the UE reported based on the assumption of one TCI state or based on the assumption of multiple TCI states.
  • the UE may transmit a single UCI containing CSI reports for multi-TRP to a primary TRP.
  • the primary TRP may be identified as the TRP sending UL grant, or the TRP sending downlink control channel such as for example, physical downlink control channel, PDCCH, or the TRP sending DCI in specific CORESETs.
  • the UE may transmit several UCIs, one for each TRP over multiple physical channels.
  • DCI requesting CSI reporting for multi-TRP may trigger the transmission of multi-TRP CSI reports in the same or separate time instances, depending on the configuration.
  • TRP may exchange reported CSI quantities over backhaul whether single UCI or multi- UCI is used.
  • FIG. 2 illustrates trigger states and associated CSI reporting configurations, according to an example embodiment.
  • Certain example embodiments may provide a CSI reporting configuration and triggering for multi-TRP. Certain example embodiments may also provide dynamic CSI triggering for multi-TRP without requiring excessive configuration of CSI triggering states for semi-persistent and aperiodic CSI reporting. In particular, according to one example embodiment, different interpretations of the same triggering states may be enabled depending on the indicated transmission configuration in DL scheduling DCI without introducing ambiguity. To do so, in one example embodiment, the CSI reporting configurations that are associated with CSI-triggering states for both semi-persistent and aperiodic in RRC may be configured to be activated dependent on the number of indicated TCI states. Moreover, at least one trigger state may be associated with more than one CSI-reporting configuration.
  • one configuration may be associated with DL-RS (e.g., CSI-RS, synchronization signal block (SSB)) resources from a single TRP.
  • DL-RS e.g., CSI-RS, synchronization signal block (SSB)
  • Other configurations may be associated with DL-RS (e.g., CSI-RS, SSB) resources from more than one TRPs.
  • the mapping from the trigger state to the activated CSI reporting configurations may be accomplished based on the DL scheduling TCI.
  • the UE if the received downlink scheduling DCI indicates a single TCI state, UE performs CSI measurements and reporting according to CSI reporting configurations that are associated with the indicated trigger state, and that are activated when the received downlink scheduling DCI indicates a single TCI state, or that are activated regardless of the number of indicated TCI states.
  • the UE may perform CSI measurements and reporting according to CSI reporting configurations that are associated with the indicated trigger state, and that are activated when the received downlink scheduling DCI indicates multiple TCI states, or that are activated regardless of the number of indicated TCI states.
  • the gNBs/TRPs may still be capable of correctly predicting the payload of UL control information (UCI), containing the CSI reports, based on implicit or explicit indication in UCI part 1 (e.g., number of RIs).
  • UCI UL control information
  • the CSI triggering scheme in certain example embodiments may be applicable whether the UE transmits a single or multiple UCI.
  • the UE may transmit different UCIs, one to each of the TRPs/gNBs.
  • the UE may transmit a single UCI to a single TRP, referred to as primary TRP.
  • the coordinating TRPs/gNBs may exchange CSI elements over the backhaul.
  • single and multiple UCI cases may have different advantages. Depending on the backhaul quality, the network may prioritize one over the other.
  • the UE may send CSI reports for several TRPs in the same or different time instances.
  • this behavior may be defined by the allocated physical uplink channel, such as for example, PUSCH/PUCCH resources.
  • FIG. 3 illustrates a flow diagram of a method, according to an example embodiment.
  • the flow diagram of FIG. 3 may be performed by a mobile station and/or UE, for instance similar to apparatus 10 illustrated in FIG. 5(a).
  • the method of FIG. 3 may include, at 300, receiving from a network element, a downlink scheduling downlink control information (DCI) that indicates a single or multiple TCI states.
  • the method may also include, at 305, receiving from a network element, an uplink grant DCI including an indication of a trigger state for aperiodic or semi-persistent channel state information (CSI) reporting.
  • DCI downlink scheduling downlink control information
  • CSI channel state information
  • the method may also include, at 310, selecting a single or multiple CSI reporting configurations associated with the indicated trigger state based on a number of indicated TCI states in the downlink scheduling DCI. Further, at 315, the method may include performing CSI measurements based on the selected CSI reporting configuration(s). At 320, the method may include transmitting a single or multiple CSI reports to the network element according to the selected CSI reporting configuration.
  • the method may further include selecting all or a subset of channel measurement or interference measurement resources, in a selected channel state information reporting configuration.
  • the downlink scheduling DCI may correspond to a plurality of TCI states, or a single TCI state.
  • the method may include transmitting a single uplink control information (UCI) including CSI reports for multi-TRP to a primary TRP, or transmitting a plurality of UCIs, one for each TRP, over multi-physical uplink channel.
  • the CSI report configurations may include reporting quantities for one or multiple of TRPs, and may be associated with measurement resources for one or multiple TRPs.
  • At least one trigger state may be associated with more than one CSI reporting configuration.
  • the CSI reporting configuration may include any combination of a rank indicator, strongest layer indicator, precoding matrix indicator, channel quality indicator, channel state information reference signal resource indicator, and Ll- reference signal received power for more than one TRP, as reporting quantities.
  • a DCI may request CSI reporting for multi-TRP may trigger transmission of multi-TRP CSI reports in a same or separate time instance, depending on the CSI reporting configurations.
  • FIG. 4 illustrates a flow diagram of another method, according to an example embodiment.
  • the method of FIG. 4 may be performed by a telecommunications network, network entity or network node in a 3GPP system, such as LTE or 5G-NR.
  • the method of FIG. 4 may be performed by a base station, eNB, or gNB for instance similar to apparatus 20 illustrated in FIG. 5(b).
  • the method of FIG. 4 may include, at 400, configuring a user equipment with trigger states and their associated channel state information (CSI) reporting configurations.
  • the method may also include, at 405, transmitting to the user equipment downlink scheduling downlink control information (DCI) that indicates a single or multiple transmission configuration indicator (TCI) states.
  • DCI downlink scheduling downlink control information
  • TCI transmission configuration indicator
  • the method may also include, at 410, triggering CSI reporting from the user equipment by indicating a trigger state for aperiodic or semi-persistent CSI reporting in an uplink grant DCI.
  • the method may also include, at 415, receiving a single or multiple CSI reports from the user equipment according to a selected CSI reporting configuration by the user equipment.
  • a new or existing field of a CSI reporting configuration that is associated with the indicated trigger state may include an explicit or implicit indication on whether it can be selected only when a single TCI state is indicated, or only when more than one TCI state are indicated, or regardless of the number of trigger states.
  • the CSI reporting configuration may be configured by a higher layer.
  • the CSI report may be a multi-transmission reception point (multi- TRP) report, or a single TRP report, or used for both single and multi-TRP, based on an indication in the downlink scheduling DCI.
  • multi- TRP multi-transmission reception point
  • the DCI may include aperiodic CSI trigger state or semi-persistent CSI trigger state information, and at least one trigger state may be associated with a plurality of CSI reporting configurations.
  • the downlink scheduling DCI may correspond to a plurality of TCI states, or a single TCI state.
  • at least one trigger state may be associated with more than one CSI reporting configuration.
  • at least one CSI reporting may be associated with downlink reference signal (DL-RS) from more than one TRP.
  • the DCI may trigger transmission of multi-TRP CSI reports in a same or separate time instance, depending on the CSI reporting configuration.
  • the method may further include predicting a payload of uplink control information including the CSI report.
  • FIG. 5(a) illustrates an apparatus 10 according to an example embodiment.
  • apparatus 10 may be a node or element in a communications network or associated with such a network, such as a UE, mobile equipment (ME), mobile station, mobile device, stationary device, IoT device, or other device.
  • UE may alternatively be referred to as, for example, a mobile station, mobile equipment, mobile unit, mobile device, user device, subscriber station, wireless terminal, tablet, smart phone, IoT device, sensor or NB-IoT device, or the like.
  • apparatus 10 may be implemented in, for instance, a wireless handheld device, a wireless plug-in accessory, or the like.
  • apparatus 10 may include one or more processors, one or more computer-readable storage medium (for example, memory, storage, or the like), one or more radio access components (for example, a modem, a transceiver, or the like), and/or a user interface.
  • apparatus 10 may be configured to operate using one or more radio access technologies, such as GSM, LTE, LTE-A, NR, 5G, WLAN, WiFi, NB-IoT, Bluetooth, NFC, MulteFire, and/or any other radio access technologies. It should be noted that one of ordinary skill in the art would understand that apparatus 10 may include components or features not shown in FIG. 5(a).
  • apparatus 10 may include or be coupled to a processor 12 for processing information and executing instructions or operations.
  • processor 12 may be any type of general or specific purpose processor.
  • processor 12 may include one or more of general-purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs), field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), and processors based on a multi-core processor architecture, as examples. While a single processor 12 is shown in FIG. 5(a), multiple processors may be utilized according to other embodiments.
  • apparatus 10 may include two or more processors that may form a multiprocessor system (e.g., in this case processor 12 may represent a multiprocessor) that may support multiprocessing.
  • processor 12 may represent a multiprocessor
  • the multiprocessor system may be tightly coupled or loosely coupled (e.g., to form a computer cluster).
  • Processor 12 may perform functions associated with the operation of apparatus 10 including, as some examples, precoding of antenna gain/phase parameters, encoding and decoding of individual bits forming a communication message, formatting of information, and overall control of the apparatus 10, including processes illustrated in FIGs. 1-3.
  • Apparatus 10 may further include or be coupled to a memory 14 (internal or external), which may be coupled to processor 12, for storing information and instructions that may be executed by processor 12.
  • Memory 14 may be one or more memories and of any type suitable to the local application environment, and may be implemented using any suitable volatile or nonvolatile data storage technology such as a semiconductor-based memory device, a magnetic memory device and system, an optical memory device and system, fixed memory, and/or removable memory.
  • memory 14 can be comprised of any combination of random access memory (RAM), read only memory (ROM), static storage such as a magnetic or optical disk, hard disk drive (HDD), or any other type of non-transitory machine or computer readable media.
  • the instructions stored in memory 14 may include program instructions or computer program code that, when executed by processor 12, enable the apparatus 10 to perform tasks as described herein.
  • apparatus 10 may further include or be coupled to (internal or external) a drive or port that is configured to accept and read an external computer readable storage medium, such as an optical disc, USB drive, flash drive, or any other storage medium.
  • an external computer readable storage medium such as an optical disc, USB drive, flash drive, or any other storage medium.
  • the external computer readable storage medium may store a computer program or software for execution by processor 12 and/or apparatus 10 to perform any of the methods illustrated in FIGs. 1-3.
  • apparatus 10 may also include or be coupled to one or more antennas 15 for receiving a downlink signal and for transmitting via an uplink from apparatus 10.
  • Apparatus 10 may further include a transceiver 18 configured to transmit and receive information.
  • the transceiver 18 may also include a radio interface (e.g., a modem) coupled to the antenna 15.
  • the radio interface may correspond to a plurality of radio access technologies including one or more of GSM, LTE, LTE-A, 5G, NR, WLAN, NB-IoT, Bluetooth, BT-LE, NFC, RFID, UWB, and the like.
  • the radio interface may include other components, such as filters, converters (for example, digital- to-analog converters and the like), symbol demappers, signal shaping components, an Inverse Fast Fourier Transform (IFFT) module, and the like, to process symbols, such as OFDMA symbols, carried by a downlink or an uplink.
  • transceiver 18 may be configured to modulate information on to a carrier waveform for transmission by the antenna(s) 15 and demodulate information received via the antenna(s) 15 for further processing by other elements of apparatus 10.
  • transceiver 18 may be capable of transmitting and receiving signals or data directly.
  • apparatus 10 may include an input and/or output device (I/O device).
  • apparatus 10 may further include a user interface, such as a graphical user interface or touchscreen.
  • memory 14 stores software modules that provide functionality when executed by processor 12.
  • the modules may include, for example, an operating system that provides operating system functionality for apparatus 10.
  • the memory may also store one or more functional modules, such as an application or program, to provide additional functionality for apparatus 10.
  • the components of apparatus 10 may be implemented in hardware, or as any suitable combination of hardware and software.
  • apparatus 10 may optionally be configured to communicate with apparatus 20 via a wireless or wired communications link 70 according to any radio access technology, such as NR.
  • processor 12 and memory 14 may be included in or may form a part of processing circuitry or control circuitry.
  • transceiver 18 may be included in or may form a part of transceiving circuitry.
  • apparatus 10 may be a UE for example.
  • apparatus 10 may be controlled by memory 14 and processor 12 to perform the functions associated with example embodiments described herein.
  • apparatus 10 may be controlled by memory 14 and processor 12 to receive from a network element, a downlink scheduling downlink control information (DCI) that indicates a single or multiple TCI states.
  • DCI downlink scheduling downlink control information
  • Apparatus 10 may also be controlled by memory 14 and processor 12 to receive from the network element, an uplink grant DCI including an indication of a trigger state for aperiodic or semi-persistent channel state information (CSI) reporting.
  • CSI channel state information
  • Apparatus 10 may further be controlled by memory 14 and processor 12 to select a single or multiple CSI reporting configurations associated with the indicated trigger state based on a number of indicated TCI states in the downlink scheduling DCI. Further, apparatus 10 may be controlled by memory 14 and processor 12 to perform CSI measurements based on the selected CSI reporting configuration. In addition, apparatus 10 may be controlled by memory 14 and processor 12 to transmit a single or multiple CSI reports to the network element according to the selected CSI reporting configuration.
  • FIG. 5(b) illustrates an apparatus 20 according to an example embodiment.
  • the apparatus 20 may be a network element, node, host, or server in a communication network or serving such a network.
  • apparatus 20 may be a base station, a Node B, an evolved Node B (eNB), 5G Node B or access point, next generation Node B (NG-NB or gNB), and/or WLAN access point, associated with a radio access network (RAN), such as an LTE network, 5G or NR.
  • RAN radio access network
  • apparatus 20 may include components or features not shown in FIG. 5(b).
  • apparatus 20 may include a processor 22 for processing information and executing instructions or operations.
  • processor 22 may be any type of general or specific purpose processor.
  • processor 22 may include one or more of general-purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs), field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), and processors based on a multi-core processor architecture, as examples. While a single processor 22 is shown in FIG. 5(b), multiple processors may be utilized according to other embodiments.
  • apparatus 20 may include two or more processors that may form a multiprocessor system (e.g., in this case processor 22 may represent a multiprocessor) that may support multiprocessing.
  • processor 22 may represent a multiprocessor
  • the multiprocessor system may be tightly coupled or loosely coupled (e.g., to form a computer cluster.
  • processor 22 may perform functions associated with the operation of apparatus 20, which may include, for example, precoding of antenna gain/phase parameters, encoding and decoding of individual bits forming a communication message, formatting of information, and overall control of the apparatus 20, including processes illustrated in FIGS. 1, 2, and 4.
  • Apparatus 20 may further include or be coupled to a memory 24 (internal or external), which may be coupled to processor 22, for storing information and instructions that may be executed by processor 22.
  • Memory 24 may be one or more memories and of any type suitable to the local application environment, and may be implemented using any suitable volatile or nonvolatile data storage technology such as a semiconductor-based memory device, a magnetic memory device and system, an optical memory device and system, fixed memory, and/or removable memory.
  • memory 24 can be comprised of any combination of random access memory (RAM), read only memory (ROM), static storage such as a magnetic or optical disk, hard disk drive (HDD), or any other type of non-transitory machine or computer readable media.
  • apparatus 20 may further include or be coupled to (internal or external) a drive or port that is configured to accept and read an external computer readable storage medium, such as an optical disc, USB drive, flash drive, or any other storage medium.
  • an external computer readable storage medium such as an optical disc, USB drive, flash drive, or any other storage medium.
  • the external computer readable storage medium may store a computer program or software for execution by processor 22 and/or apparatus 20 to perform the methods illustrated in FIGS. 1, 2, and 4.
  • apparatus 20 may also include or be coupled to one or more antennas 25 for transmitting and receiving signals and/or data to and from apparatus 20.
  • Apparatus 20 may further include or be coupled to a transceiver 28 configured to transmit and receive information.
  • the transceiver 28 may include, for example, a plurality of radio interfaces that may be coupled to the antenna(s) 25.
  • the radio interfaces may correspond to a plurality of radio access technologies including one or more of GSM, NB-IoT, LTE, 5G, WLAN, Bluetooth, BT-LE, NFC, radio frequency identifier (RFID), ultra wideband (UWB), MulteFire, and the like.
  • the radio interface may include components, such as filters, converters (for example, digital-to-analog converters and the like), mappers, a Fast Fourier Transform (FFT) module, and the like, to generate symbols for a transmission via one or more downlinks and to receive symbols (for example, via an uplink).
  • filters for example, digital-to-analog converters and the like
  • mappers for example, mappers
  • FFT Fast Fourier Transform
  • transceiver 28 may be configured to modulate information on to a carrier waveform for transmission by the antenna(s) 25 and demodulate information received via the antenna(s) 25 for further processing by other elements of apparatus 20.
  • transceiver 18 may be capable of transmitting and receiving signals or data directly.
  • apparatus 20 may include an input and/or output device (I/O device).
  • memory 24 may store software modules that provide functionality when executed by processor 22.
  • the modules may include, for example, an operating system that provides operating system functionality for apparatus 20.
  • the memory may also store one or more functional modules, such as an application or program, to provide additional functionality for apparatus 20.
  • the components of apparatus 20 may be implemented in hardware, or as any suitable combination of hardware and software.
  • processor 22 and memory 24 may be included in or may form a part of processing circuitry or control circuitry.
  • transceiver 28 may be included in or may form a part of transceiving circuitry.
  • circuitry may refer to hardware-only circuitry implementations (e.g., analog and/or digital circuitry), combinations of hardware circuits and software, combinations of analog and/or digital hardware circuits with software/firmware, any portions of hardware processor(s) with software (including digital signal processors) that work together to cause an apparatus (e.g., apparatus 10 and 20) to perform various functions, and/or hardware circuit(s) and/or processor(s), or portions thereof, that use software for operation but where the software may not be present when it is not needed for operation.
  • an apparatus e.g., apparatus 10 and 20
  • circuitry may also cover an implementation of merely a hardware circuit or processor (or multiple processors), or portion of a hardware circuit or processor, and its accompanying software and/or firmware.
  • the term circuitry may also cover, for example, a baseband integrated circuit in a server, cellular network node or device, or other computing or network device.
  • apparatus 20 may be a network element, node, host, or server in a communication network or serving such a network.
  • apparatus 20 may be a satellite, base station, a Node B, an evolved Node B (eNB), 5G Node B or access point, next generation Node B (NG-NB or gNB), and/or WLAN access point, associated with a radio access network (RAN), such as an LTE network, 5G or NR.
  • RAN radio access network
  • apparatus 20 may be controlled by memory 24 and processor 22 to perform the functions associated with any of the embodiments described herein.
  • apparatus 20 may be controlled by memory 24 and processor 22 to configure a user equipment with bigger states and their associated channel state information (CSI) reporting configurations.
  • Apparatus 20 may also be controlled by memory 24 and processor 22 to transmit to the user equipment downlink scheduling downlink control information (DCI) that indicates a single or multiple bansmission configuration indicator (TCI) states.
  • Apparatus 20 may further be conbolled by memory 24 and processor 22 to bigger CSI reporting from the user equipment by indicating a trigger state for aperiodic or semi-persistent CSI reporting in an uplink grant DCI.
  • apparatus 20 may be conbolled by memory 24 and processor 22 to receive a single or multiple CSI reports from the user equipment according to a selected CSI reporting configuration by the user equipment.
  • FIG. 1 For example, one example embodiment may be dbected to an apparatus that includes means for receiving from a network element, a downlink scheduling downlink control information (DCI) that indicates a single or multiple TCI states.
  • the apparatus may also include means for receiving from the network element, an uplink grant DCI including an indication of a bigger state for aperiodic or semi-persistent channel state information (CSI) reporting.
  • the apparatus may further include means for selecting a single or multiple CSI reporting configurations associated with the indicated bigger state based on a number of indicated TCI states in the downlink scheduling DCI.
  • the apparatus may include means for performing CSI measurements based on the selected CSI reporting configuration.
  • the apparatus may include means for transmitting a single or multiple CSI reports to the network element according to the selected CSI reporting configuration.
  • Another example embodiment may be directed to an apparatus that includes means for configuring a user equipment with trigger states and their associated channel state information (CSI) reporting configurations.
  • the apparatus may also include means for transmitting to the user equipment downlink scheduling downlink conbol information (DCI) that indicates a single or multiple bansmission configuration indicator (TCI) states.
  • DCI downlink scheduling downlink conbol information
  • TCI bansmission configuration indicator
  • the apparatus may further include means for biggering CSI reporting from the user equipment by indicating a trigger state for aperiodic or semi-persistent CSI reporting in an uplink grant DCI.
  • the apparatus may include means for receiving a single or multiple CSI reports from the user equipment according to a selected CSI reporting configuration by the user equipment.
  • a computer program product may include one or more computer-executable components which, when the program is run, are configured to carry out some example embodiments.
  • the one or more computer-executable components may be at least one software code or portions of it. Modifications and configurations required for implementing functionality of an example embodiment may be performed as routine(s), which may be implemented as added or updated software routine(s). Software routine(s) may be downloaded into the apparatus.
  • software or a computer program code or portions of it may be in a source code form, object code form, or in some intermediate form, and it may be stored in some sort of carrier, distribution medium, or computer readable medium, which may be any entity or device capable of carrying the program.
  • carrier may include a record medium, computer memory, read-only memory, photoelectrical and/or electrical carrier signal, telecommunications signal, and software distribution package, for example.
  • the computer program may be executed in a single electronic digital computer or it may be distributed amongst a number of computers.
  • the computer readable medium or computer readable storage medium may be a non-transitory medium.
  • the functionality may be performed by hardware or circuitry included in an apparatus (e.g., apparatus 10 or apparatus 20), for example through the use of an application specific integrated circuit (ASIC), a programmable gate array (PGA), a field programmable gate array (FPGA), or any other combination of hardware and software.
  • ASIC application specific integrated circuit
  • PGA programmable gate array
  • FPGA field programmable gate array
  • the functionality may be implemented as a signal, a non-tangible means that can be carried by an electromagnetic signal downloaded from the Internet or other network.
  • an apparatus such as a node, device, or a corresponding component, may be configured as circuitry, a computer or a microprocessor, such as single-chip computer element, or as a chipset, including at least a memory for providing storage capacity used for arithmetic operation and an operation processor for executing the arithmetic operation.
  • CRI CSI-RS Resource Indicator [0085] CSI Channel State Information [0086] CSI-RS Channel State Information-Reference Signal [0087] DCI Downlink Control Information [0088] DL Downlink [0089] DPS Dynamic Point Selection [0090] eNB Enhanced Node B [0091] FR2 Frequency Range 2 [0092] gNB 5G or Next Generation NodeB [0093] IE Information Element [0094] IMR Interference Measurement Resource [0095] JT Joint Transmission [0096] LTE Long Term Evolution [0097] MAC CE MAC Control Element [0098] NR New Radio [0099] PDCCH Physical Downlink Control Channel [0100] PDSCH Physical Downlink Shared Channel [0101] PMI Precoding Matrix Indicator [0102] PSS Primary Synchronization Signal [0103] PUCCH Physical Uplink Control Channel [0104] PUSCH Physical Uplink Shared Channel [0105] RRC Radio Resource Control [0106] SSS Secondary

Landscapes

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

Abstract

L'invention concerne des systèmes, des procédés, des appareils et des produits-programmes informatiques pour un déclenchement d'informations d'état de canal (CSI). Un procédé peut consister à recevoir, d'un élément de réseau, des informations de commande de liaison descendante de planification de liaison descendante (DCI) qui indiquent un ou plusieurs états d'indicateur de configuration de transmission (TCI). Le procédé peut également consister à recevoir, de l'élément de réseau, des DCI d'octroi de liaison montante comprenant une indication d'un état de déclenchement pour un rapport d'informations d'état de canal apériodiques ou semi-persistantes (CSI). Le procédé peut également consister à sélectionner une ou plusieurs configurations de rapport de CSI associées à l'état de déclenchement indiqué d'après un nombre d'états TCI indiqués dans les DCI de planification de liaison descendante. De plus, le procédé peut consister à effectuer des mesures de CSI d'après la configuration de rapport CSI sélectionnée. De plus, le procédé peut consister à transmettre un ou plusieurs rapports CSI à l'élément de réseau selon la configuration de rapport CSI sélectionnée.
PCT/IB2021/050800 2020-02-18 2021-02-01 Déclenchement d'informations d'état de canal Ceased WO2021165767A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202062978173P 2020-02-18 2020-02-18
US62/978,173 2020-02-18

Publications (1)

Publication Number Publication Date
WO2021165767A1 true WO2021165767A1 (fr) 2021-08-26

Family

ID=74561944

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2021/050800 Ceased WO2021165767A1 (fr) 2020-02-18 2021-02-01 Déclenchement d'informations d'état de canal

Country Status (1)

Country Link
WO (1) WO2021165767A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023142000A1 (fr) * 2022-01-28 2023-08-03 Nec Corporation Procédés, dispositifs et supports de stockage informatique pour la communication
WO2023166497A1 (fr) * 2022-03-04 2023-09-07 Telefonaktiebolaget Lm Ericsson (Publ) Transmission et réception de csi-rs avec états tci unifiés pour de multiples trps
WO2023178587A1 (fr) * 2022-03-24 2023-09-28 Qualcomm Incorporated Rapports d'informations d'état de canal activé par des informations de commande de liaison descendante d'autorisation de liaison descendante
WO2023206396A1 (fr) * 2022-04-29 2023-11-02 Qualcomm Incorporated Hypothèses d'informations csi pour point récepteur d'émetteur unique (trp) et trp multiple
WO2023206474A1 (fr) * 2022-04-29 2023-11-02 Qualcomm Incorporated Groupes de ports pour créer un rapport d'informations d'état de canal de transmission conjointe cohérente de multiples points de réception et de transmission
TWI843200B (zh) * 2021-09-13 2024-05-21 聯發科技股份有限公司 無線通訊系統中下行鏈路多天線傳輸方法
WO2024164172A1 (fr) * 2023-02-08 2024-08-15 Qualcomm Incorporated Équilibrage de puissance pour rapport d'informations csi de transmission conjointe cohérente à points de réception de transmission multiples
US12425161B2 (en) 2020-07-31 2025-09-23 Telefonaktiebolaget Lm Ericsson (Publ) Indication of TCI states for aperiodic CSI-RS with low configuration overhead

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200028613A1 (en) * 2018-07-20 2020-01-23 Qualcomm Incorporated Cross-carrier sounding with aperiodic channel state information reference signals (csi-rs)

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200028613A1 (en) * 2018-07-20 2020-01-23 Qualcomm Incorporated Cross-carrier sounding with aperiodic channel state information reference signals (csi-rs)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NOKIA ET AL: "Enhancements on Multi-TRP/Panel Transmission", vol. RAN WG1, no. Reno, U.S.A.; 20191118 - 20191122, 8 November 2019 (2019-11-08), XP051820169, Retrieved from the Internet <URL:https://ftp.3gpp.org/tsg_ran/WG1_RL1/TSGR1_99/Docs/R1-1912719.zip R1-1912719_Enhancements on Multi TRP.docx> [retrieved on 20191108] *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12425161B2 (en) 2020-07-31 2025-09-23 Telefonaktiebolaget Lm Ericsson (Publ) Indication of TCI states for aperiodic CSI-RS with low configuration overhead
TWI843200B (zh) * 2021-09-13 2024-05-21 聯發科技股份有限公司 無線通訊系統中下行鏈路多天線傳輸方法
WO2023142000A1 (fr) * 2022-01-28 2023-08-03 Nec Corporation Procédés, dispositifs et supports de stockage informatique pour la communication
WO2023166497A1 (fr) * 2022-03-04 2023-09-07 Telefonaktiebolaget Lm Ericsson (Publ) Transmission et réception de csi-rs avec états tci unifiés pour de multiples trps
WO2023178587A1 (fr) * 2022-03-24 2023-09-28 Qualcomm Incorporated Rapports d'informations d'état de canal activé par des informations de commande de liaison descendante d'autorisation de liaison descendante
WO2023206396A1 (fr) * 2022-04-29 2023-11-02 Qualcomm Incorporated Hypothèses d'informations csi pour point récepteur d'émetteur unique (trp) et trp multiple
WO2023206474A1 (fr) * 2022-04-29 2023-11-02 Qualcomm Incorporated Groupes de ports pour créer un rapport d'informations d'état de canal de transmission conjointe cohérente de multiples points de réception et de transmission
WO2024164172A1 (fr) * 2023-02-08 2024-08-15 Qualcomm Incorporated Équilibrage de puissance pour rapport d'informations csi de transmission conjointe cohérente à points de réception de transmission multiples

Similar Documents

Publication Publication Date Title
US11979213B2 (en) Methods and apparatuses for channel state information configuration and reporting for multi-transmission reception point operation
CN111385042B (zh) 干扰测量的方法和通信装置
US12003434B2 (en) PRB bundling extension
WO2021165767A1 (fr) Déclenchement d&#39;informations d&#39;état de canal
US12212395B2 (en) Beam diversity for multi-slot communication channel
US12004146B2 (en) Dynamic channel state information reference signals (CSI-RS) resource mapping configuration for precoded channel state information reference signals (CSI-RS) configurations
CN107888268A (zh) Csi测量方法及装置
US20240162956A1 (en) Early channel state information acquisition for target cell in layer one / layer two inter-cell mobility
US11336336B2 (en) Methods and apparatuses for dynamic transmit diversity fallback
EP3735086A1 (fr) Rapport d&#39;état de mémoire tampon pour l&#39;attribution de ressources de liaison latérale
WO2019153235A1 (fr) Appareils et procédés de précodage non linéaire
WO2023039695A1 (fr) Rapports d&#39;informations d&#39;état de canal liés à un domaine temporel pour une communication sans fil
US20230276283A1 (en) Indication of feasible quasi-colocation (qcl) sources for fast beam indication
US11617167B2 (en) Enhanced traffic co-existence with multi-panel user equipment (UE)
US12457075B2 (en) Channel state information overhead reduction by network signaled user equipment specific adjustments before measurements
WO2023206051A1 (fr) Signal de référence d&#39;informations d&#39;état de canal apériodique pour interférence entre liaisons dans des symboles de garde ou à proximité de ces derniers
WO2025035272A1 (fr) Rétroaction de csi basée sur des livres de codes associés à des valeurs de réduction de puissance
EP4333348A2 (fr) Indication dynamique de schéma de transmission en liaison montante pour équipement utilisateur à panneaux multiples
EP4468621A1 (fr) Commutation de paire de faisceaux
US20250080186A1 (en) Framework and signaling for non-coherent joint transmission (ncjt) channel state information (csi) selection
WO2024159525A1 (fr) Opération d&#39;inhibition d&#39;économie d&#39;énergie de réseau avec des informations d&#39;état de canal apériodiques et un rapport d&#39;informations d&#39;état de canal apériodique
CN119968782A (zh) 用于在无线通信系统中发送或接收探测参考信号的方法及装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21703997

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21703997

Country of ref document: EP

Kind code of ref document: A1