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WO2024208978A1 - Cadre d'informations d'état de canal (csi) unifié pour une adaptation de domaine spatial et de puissance en vue d'économiser l'énergie du réseau - Google Patents

Cadre d'informations d'état de canal (csi) unifié pour une adaptation de domaine spatial et de puissance en vue d'économiser l'énergie du réseau Download PDF

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Publication number
WO2024208978A1
WO2024208978A1 PCT/EP2024/059206 EP2024059206W WO2024208978A1 WO 2024208978 A1 WO2024208978 A1 WO 2024208978A1 EP 2024059206 W EP2024059206 W EP 2024059206W WO 2024208978 A1 WO2024208978 A1 WO 2024208978A1
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WO
WIPO (PCT)
Prior art keywords
csi
subconfiguration
reporting
parameter setting
csi reporting
Prior art date
Application number
PCT/EP2024/059206
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English (en)
Inventor
Stephen Grant
Ajit Nimbalker
Ravikiran Nory
Sina MALEKI
Helka-Liina MÄÄTTÄNEN
Ali Nader
Andres Reial
Original Assignee
Telefonaktiebolaget Lm Ericsson (Publ)
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 Telefonaktiebolaget Lm Ericsson (Publ) filed Critical Telefonaktiebolaget Lm Ericsson (Publ)
Publication of WO2024208978A1 publication Critical patent/WO2024208978A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • 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 signaling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI

Definitions

  • the present disclosure relates to wireless communications, and in particular, to a unified channel state information (CSI) framework for spatial and power domain adaptation for network energy saving.
  • CSI channel state information
  • the Third Generation Partnership Project (3GPP) has developed and is developing standards for Fourth Generation (4G) (also referred to as Long Term Evolution (LTE)) and Fifth Generation (5G) (also referred to as New Radio (NR)) wireless communication systems.
  • 4G also referred to as Long Term Evolution (LTE)
  • 5G also referred to as New Radio (NR)
  • Such systems provide, among other features, broadband communication between network nodes, such as base stations, and mobile wireless devices (WD) or user equipments (UE), as well as communication between network nodes and between UEs.
  • the 3 GPP is also developing standards for Sixth Generation (6G) wireless communication networks.
  • the network (NW) power consumption for NR is said to be lower than for LTE because of its lean design. In the current implementation, however, NR will most likely consume more power compared to LTE, e.g., due to the higher bandwidth and more so due to introduction of additional elements such as 64 transmi t/receive (TX/RX) ports with associated digital radio frequency (RF) chains.
  • TX/RX transmi t/receive
  • RF digital radio frequency
  • the network node may need to use full configuration even when the maximum network node support is actually rarely needed by the UEs.
  • Each sub-array is typically connected to two transceiver chains, one per polarization, as shown in the example of FIG. 2.
  • each transceiver chain corresponds to a digital antenna port.
  • An antenna port is what is “seen” by the baseband (Open Systems Interconnection Layer 1 (LI) processing) in the sense that digital beamforming weights may be applied at baseband across the multiple ports to steer a beam toward a scheduled user.
  • LI Open Systems Interconnection Layer 1
  • maintaining sufficient user and system performance may not require a full antenna array at the network node.
  • the network node may then deactivate or mute parts of the antenna panel and transmit with a subset of antenna elements to reduce energy consumption, as shown in the example of FIG. 3.
  • Type 1 all antenna elements associated to a logical antenna port is disabled/enabled
  • Type 2 part/subset of antenna elements associated to a logical antenna port is disabled/enabled.
  • FIGS. 1 and 2 there are 64 digital antenna ports with 2 ports per sub-array corresponding to the two polarizations.
  • Type-1 antenna muting is when all antenna elements corresponding to a port are disabled. Since there are two elements per port, both of them would be muted.
  • Type-2 antenna muting is more relevant to millimeter wave (mmWave) applications in frequency range 2 when there are a small number of ports (e.g., 2), but many antenna elements associated with each port. In this case there is typically a power amplifier (PA) associated with each antenna element, so energy may be saved by muting antenna elements within a port.
  • PA power amplifier
  • the UE estimates CSI based on a CSI reference signal (CSI-RS) resource with a certain number of ports, where the number of ports is consistent with the deployed antenna array.
  • CSI-RS CSI reference signal
  • a CSI-RS resource used for CSI reporting may span 1, 2, or 4 orthogonal frequency division multiplexed (OFDM) symbols:
  • a CSI-RS resource may start at any symbol (0-13) within a slot:
  • components may be mapped to frequencies with granularity of component size, 1, 2, or 4 subcarriers.
  • the same subcarriers may be used across all symbols in a resource.
  • TRS tracking reference signals
  • ZD MRS demodulation reference signals
  • CSI-RS resources are generally configured in sets where a set may contain one or more CSI-RS resources.
  • a CSI-RS resource set is indicated to the UE, and the UE may perform CSI measurements on the resources within the set.
  • a non-zero power CSI-RS resource is configured with a number of parameters within the information element (IE), NZP-CSI-RS-Resource, as follows:
  • NZP-CSI-RS-Resource SEQUENCE ⁇ nzp-CSI-RS-Resourceld NZP-CSI-RS-Resourceld, resourceMapping CSI-RS-ResourceMapping, powerControlOffset INTEGER (-8 .15), powerControlOffsetSS ENUMERATED ⁇ db-3, dbO, db3, db6 ⁇ OPTIONAL, - Need R scramblingID Scrambling! d, periodicityAndOffset CSI-ResourcePeriodicityAndOffset OPTIONAL, - Cond
  • the information element informs the UE of two different power offsets.
  • the first one, powerControlOffset is the power offset (in dB) between physical downlink shared channel (PDSCH) and CSI-RS that the UE may assume when it estimates and reports CSI for future PDSCH scheduling decisions made by the network node. Since the PDSCH and CSI-RS powers are generally different, and the UE estimates the channel based on CSI-RS samples, the UE uses this offset to correctly scale its CSI estimates appropriately to account for the power difference.
  • the second offset powerControlOffsetSS is the power offset (in dB) between CSI- RS and synchronization signal block (SSB).
  • the UE may use this offset to compute the absolute power of the CSI-RS since the transmission power of the SSB is signaled to the UE separately.
  • Aperiodic CSI-RS Transmission This is a one-shot CSI-RS transmission that may be triggered by a network node via downlink control information (DCI) in any slot.
  • DCI downlink control information
  • one-shot means that CSI-RS transmission only happens once per trigger in one slot.
  • the CSI-RS resources i.e. , the resource element locations which consist of subcarrier locations and OFDM symbol locations
  • the transmission of aperiodic CSI-RS is triggered via downlink control information (DCI).
  • DCI downlink control information
  • Table 1 aperiodic CSI-RS may be used for aperiodic CSI reporting.
  • Periodic CSI-RS Transmission These CSI-RS transmissions are preconfigured by higher layer signaling and the pre-configuration includes parameters such as periodicity and slot offset. Periodic CSI-RS is controlled by higher layer signaling only. That is, the periodic CSI-RS transmission starts following radio resource control (RRC) configuration following the configured parameters. As shown in Table 1, periodic CSI-RS may be used for periodic CSI reporting, semi-persistent CSI reporting and aperiodic CSI reporting.
  • RRC radio resource control
  • Semi-Persistent CSI-RS Transmission Similar to periodic CSI-RS, resources for semi-persistent CSI-RS transmissions are preconfigured via higher layer signaling with parameters such as periodicity and slot offset. However, unlike periodic CSI-RS, a dynamic allocation activation signaling via a medium access control (MAC) control element (CE) is needed to begin transmission of semi-persistent CSI-RS on the preconfigured resources. Furthermore, semi-persistent CSI-RS is transmitted for a limited time duration until the activated semi-persistent CSI-RS is deactivated via a deactivation signaling via a MAC CE. As shown in Table 1, semi-persistent CSI-RS may be used for semi-persistent CSI reporting and aperiodic CSI reporting.
  • MAC medium access control
  • CE control element
  • a UE in connected mode is configured with a first number of trigger states (e.g., 128) via RRC signaling.
  • the DCI field size for A-CSI trigger state indication is limited to 6 bits, implying that only a maximum of 64 trigger states may be active at a time and only these may be triggered via the DCI (e.g., via DCI 0_l/0_2).
  • a MAC CE may be used for Aperiodic CSI trigger state selection to indicate the active trigger states.
  • the active trigger state budget is limited, and the trigger states are used for many purposes such as CSI measurement and reporting for link adaptation, beam management (including Ll- reference signal received power (RSRP) reporting, LI signal to interference plus noise (SINR) reporting, etc.).
  • RSRP Ll- reference signal received power
  • SINR LI signal to interference plus noise
  • Each trigger state consists of a list of CSI-AssociatedReportConflglnfo and each consists of association between (1) a resource configuration (CSI-ResourceConflg') in which channel and interference resources to be measured are defined, and (2) a reporting configuration (CSI-ReportConflg) which configures the UE how to report and what to report based on the measurements.
  • CSI-ResourceConflg' resource configuration
  • CSI-ReportConflg reporting configuration
  • the CSI-AperiodicTriggerStateList IE is used to configure the UE with a list of aperiodic trigger states. Each codepoint of the DCI field "CSI request" is associated with one trigger state (see 3GPP TS 38.321 [3], clause 6.1.3.13). Upon reception of the value associated with a trigger state, the UE will perform measurement of CSI-RS, CSI-IM and/or synchronization signal block (SSB) (reference signals) and aperiodic reporting on LI according to all entries in the associatedReportConflglnfoList for that trigger state.
  • SSB synchronization signal block
  • CSI-AperiodicTriggerState SEQUENCE ⁇ associatedReportConflglnfoList SEQUENCE (SIZE(L.maxNrofReportConfigPerAperiodicTrigger)) OF CSI- AssociatedReportConfiglnfo,
  • CSI-AssociatedReportConfiglnfo SEQUENCE ⁇ reportConfigld CSI-ReportConfigld, resourcesF orChannel CHOICE ⁇ nzp-CSI-RS SEQUENCE ⁇ resourceSet INTEGER (L.maxNrofNZP-CSI-RS-
  • FIG. 6 shows a first example of CSI reporting and resource configuration used for the case of aperiodic reporting on a physical uplink shared channel (PUSCH) which is triggered as described in the previous section.
  • PUSCH physical uplink shared channel
  • a trigger state includes an index that points to one CSI-RS resource set from a list CSI-RS resource sets configured in a CSI-ResourceConfig:
  • the trigger states point to the following CSI- RS resource sets:
  • Trigger State 1 is linked to two different CSI-ReportConfigs such that the UE reports two CSI measurements.
  • Trigger States 1 and S are linked to only one CSI-ReportConfig and thus reports only a single CSI measurement;
  • a CSI-ReportConfig contains a collection of CSI reporting parameters, e.g., CSI reporting type, codebook configuration, reporting granularity (wideband/subband), measurement restriction, etc.; o A CSI-ReportConfig is “linked” to a CSI-ResourceConfig which contains one or more lists of resources used for CSI measurement for this report configuration:
  • both CSI-ReportConfig 1 and 2 are both linked to CSI-ResourceConfig 1 and CSI-ReportConfig M is linked to CSI- ReportConfig N;
  • a CSI-ResourceConfig contains one or more lists containing pointers to CSI-RS, SSB, and/or IM resource sets that the UE shall use for CSI measurement: o
  • CSI-ResourceConfig contains one or more lists containing pointers to CSI-RS, SSB, and/or IM resource sets that the UE shall use for CSI measurement: o
  • FIG. 7 shows a second, simpler example of CSI reporting and resource configuration used for the case of aperiodic reporting on PUS CH.
  • the UE when the network node triggers a CSI report with a certain codepoint in the CSI Request field of DCI, the UE knows by configuration what kind of report(s) is/are requested, and on what measurement resources the report(s) should be based.
  • One CSI report configuration contains multiple CSI report sub-configurations where each sub-configuration corresponds to one spatial adaptation pattern:
  • CSI reporting based on multiple power offsets to enable the network node to request the UE to perform CSI measurement and reporting on PUSCH based on multiple hypothesized values of the PDSCH-to-CSI-RS power offset parameter powerControlOffset were considered. This enables the network node to make energy saving decisions based on several hypotheses on PDSCH power reduction taking into account the channel quality reported by the UE.
  • Some embodiments advantageously provide methods, network nodes and UEs for a unified channel state information (CSI) framework for spatial and power domain adaptation for network energy saving.
  • CSI channel state information
  • Methods are disclosed by which a UE is configured and dynamically triggered to measure and report CSI on an UL channel corresponding to one or more spatial domain adaptation settings and/or one or more power domain adaptation settings in a unified CSI framework applicable to both adaptation types, used in isolation or in combination.
  • the UE may be configured with at least one of:
  • One or more sub-configurations configured within a CSI reporting configuration (e.g., within the information element CSI-ReportConfig) where a subconfiguration contains a particular combination of spatial and/or power domain adaptation parameter settings;
  • One or more sub-configuration indicators configured within an aperiodic trigger state (e.g., within the information element CSI-AperiodicTriggerStateList) that each point to a sub-configuration within a CSI reporting configuration; and/or
  • One or more CSI resource configurations (e.g., the information element CSI-ResourceConfig) associated with the CSI reporting configuration which contains one or more CSI-RS resource sets on which the UE, when triggered, measures CSI based on the spatial and/or power domain adaptation parameter settings in a sub-configuration.
  • Each CSI-RS resource set contains one or more CSI-RS resources or indicators (ID) of one or more CSI-RS resources.
  • the UE is indicated a trigger state, and based on all, or a subset, of the indicated sub-configuration(s), the UE measures and reports one or more CSIs.
  • Embodiments may provide flexible and efficient configuration and reporting of multiple CSI reports for multiple hypotheses on power and spatial domain adaptation setting for network energy saving.
  • a method in a user equipment, UE, configured to communicate with a network node includes receiving at least one channel state information, CSI, reporting subconfiguration configured within a CSI reporting configuration, each of the at least one CSI reporting subconfigurations having at least one of a spatial domain adaptation parameter setting and a power domain adaptation parameter setting, at least one of the at least one CSI reporting subconfiguration having a power domain adaptation parameter setting, and at least one of the at least one CSI reporting subconfiguration having a spatial domain adaption parameter setting.
  • the method also includes receiving at least one subconfiguration indicator configured within an aperiodic trigger state, each of the at least one subconfiguration indicator indicating at least one of the at least one CSI reporting subconfiguration within the CSI reporting configuration.
  • the method also includes receiving an indication of the aperiodic trigger state.
  • the method further includes, in response to the indication of the aperiodic trigger state, measuring and reporting at least one CSI based on at least one of the at least one CSI subconfiguration indicated by the at least one subconfiguration indicator within the aperiodic trigger state.
  • the measuring and reporting at least one CSI comprises measuring and reporting a CSI based on each of the CSI reporting subconfiguration indicated by the at least one subconfiguration indicator in the aperiodic trigger state.
  • at least one of the at least one CSI reporting subconfiguration comprises both a spatial domain adaptation parameter setting and a power domain adaptation parameter setting.
  • the measuring and reporting of at least one CSI includes measuring and reporting CSI according to both the spatial domain adaptation parameter setting and the power domain adaptation parameter setting for the at least one of the at least one CSI reporting subconfiguration comprising both the spatial domain adaption parameter setting and the power domain adaption parameter setting.
  • the measuring and reporting CSI comprises measuring CSI on at least one channel state information reference signal, CSI- RS, resource configured within a set of CSI-RS resources.
  • the indication of the aperiodic trigger state comprises a codepoint of a Downlink Control Information, DCI, field.
  • reporting the at least one CSI comprises reporting CSI on Physical Uplink Shared Control Channel, PUSCH.
  • the method includes reporting a capability of a maximum number of CSI reporting subconfigurations supported by the UE.
  • the spatial domain adaptation parameter setting comprises an antenna port muting pattern.
  • the antenna port muting pattern indicates a subset of ports on which to measure and report CSI.
  • the antenna ports are ports of a CSI-RS.
  • a spatial domain adaptation parameter comprises an indication of a codebook subset restriction.
  • a power domain adaptation parameter comprises a physical downlink shared channel, PDSCH, to CSI-RS power offset.
  • a UE configured to communicate with a network node.
  • the UE is configured to receive at least one channel state information, CSI, reporting subconfiguration configured within a CSI reporting configuration, each of the at least one CSI reporting subconfiguration having at least one of a spatial domain adaptation parameter setting and a power domain adaptation parameter setting, at least one of the at least one CSI reporting subconfiguration having a power domain adaptation parameter setting, and at least one of the at least one CSI reporting subconfiguration having a spatial domain adaption parameter.
  • the UE is also configured to receive at least one subconfiguration indicator configured within an aperiodic trigger state, each of the at least one subconfiguration indicator indicating at least one of the at least one CSI reporting subconfiguration within the CSI reporting configuration.
  • the UE is configured to receive an indication of the aperiodic trigger state; and in response to the indication of the aperiodic trigger state, measure and report at least one CSI based on at least one of the at least one CSI subconfiguration indicated by the at least one subconfiguration indicator configured within the aperiodic trigger state.
  • the UE is configured to measure and report a CSI based on each of the CSI reporting subconfiguration indicated by the at least one subconfiguration indicator configured within the aperiodic trigger state.
  • at least one of the at least one CSI reporting subconfiguration comprises both a spatial domain adaptation parameter setting and a power domain adaptation parameter setting.
  • the UE is configured to, when the at least one of the at least one CSI reporting subconfiguration comprising both the spatial domain adaption parameter setting and a power domain adaption parameter setting is indicated by the at least one subconfiguration indicator within the aperiodic trigger state, measure and report CSI according to both the spatial domain adaptation parameter setting and the power domain adaptation parameter setting for the at least one of the at least one CSI reporting subconfiguration comprising both the spatial domain adaption parameter setting and the power domain adaption parameter setting.
  • the UE is configured to measure CSI on at least one channel state information reference signal, CSI- RS, resource configured within a set of CSI-RS resources.
  • the indication of the aperiodic trigger state comprises a codepoint of a Downlink Control Information, DCI, field.
  • the UE is configured to report the at least one CSI comprises reporting CSI on Physical Uplink Shared Control Channel, PUSCH.
  • the UE is configured to report a capability of a maximum number of CSI reporting subconfigurations supported by the UE.
  • the spatial domain adaptation parameter setting comprises an antenna port muting pattern.
  • the antenna port muting pattern indicates a subset of ports on which to measure and report CSI.
  • the antenna ports are ports of a channelstate information resource signal (CSI-RS).
  • CSI-RS channelstate information resource signal
  • a spatial domain adaptation parameter comprises an indication of a codebook subset restriction.
  • a power domain adaptation parameter comprises a physical downlink shared channel, PDSCH, to CSI-RS power offset.
  • a method in a network node configured to communicate with a user equipment, UE includes transmitting at least one channel state information, CSI, reporting subconfiguration within a CSI reporting configuration, each of the at least one CSI reporting subconfigurations having at least one of a spatial domain adaptation parameter setting and a power domain adaptation parameter setting, at least one of the at least one CSI reporting subconfiguration having a power domain adaptation parameter setting, and at least one of the at least one CSI reporting subconfiguration having a spatial domain adaption parameter setting.
  • the method includes transmitting at least one subconfiguration indicator configured within an aperiodic trigger state, each of the at least one subconfiguration indicator indicating at least one of the at least one CSI reporting subconfiguration within the CSI reporting configuration.
  • the method includes transmitting an indication of the aperiodic trigger state and, in response to the indication of the aperiodic trigger state, receiving at least one CSI based on at least of the at least one CSI reporting subconfiguration indicated by the at least one subconfiguration indicator in the aperiodic trigger state.
  • the receiving at least one CSI comprises receiving a CSI based on each of the CSI reporting subconfiguration indicated by the at least one subconfiguration indicator in the aperiodic trigger state.
  • at least one of the at least one CSI reporting subconfiguration comprises both a spatial domain adaptation parameter setting and a power domain adaptation parameter setting.
  • the indication of the aperiodic trigger state comprises a codepoint of a Downlink Control Information, DCI, field.
  • a number of the at least one CSI reporting configuration is within a maximum number of CSI reporting configurations supported by the UE.
  • a network node configured to communicate with a user equipment, UE.
  • the network node is configured to transmit at least one channel state information, CSI, reporting subconfiguration within a CSI reporting configuration, each of the at least one CSI reporting subconfigurations having at least one of a spatial domain adaptation parameter setting and a power domain adaptation parameter setting, at least one of the at least one CSI reporting subconfiguration having a power domain adaptation parameter setting, and at least one of the at least one CSI reporting subconfiguration having a spatial domain adaption parameter setting.
  • the network node is configured to transmit at least one subconfiguration indicator configured within an aperiodic trigger state, each of the at least one subconfiguration indicator indicating at least one of the at least one CSI reporting subconfiguration within the CSI reporting configuration.
  • the network node is further configured to transmit an indication of the aperiodic trigger state and, in response to the indication of the aperiodic trigger state, receive at least one CSI based on at least of the at least one CSI reporting subconfiguration indicated by the at least one subconfiguration indicator in the aperiodic trigger state.
  • the at least one CSI comprises a CSI based on each of the CSI reporting subconfiguration indicated by the at least one subconfiguration indicator in the aperiodic trigger state.
  • at least one of the at least one CSI reporting subconfiguration comprises both a spatial domain adaptation parameter setting and a power domain adaptation parameter setting.
  • the indication of the aperiodic trigger state comprises a codepoint of a Downlink Control Information, DCI, field.
  • a number of the at least one CSI reporting configuration is within a maximum number of CSI reporting configurations supported by the UE.
  • FIG. 1 is an example antenna arrangement
  • FIG. 2 is an example of polarizations connected to separate RX/TC chains;
  • FIG. 3 illustrates different transceiver muting patterns;
  • FIG. 4 shows example mappings of CSI-RS to physical resources
  • FIG. 5 illustrates trigger states for aperiodic CSI reporting
  • FIG. 6 is an example of an A-CSI reporting configuration
  • FIG. 7 is another example of an A-CSI reporting configuration
  • FIG. 8 is a schematic diagram of an example network architecture illustrating a communication system connected via an intermediate network to a host computer according to the principles in the present disclosure
  • FIG. 9 is a block diagram of a host computer communicating via a network node with a wireless device over an at least partially wireless connection according to some embodiments of the present disclosure
  • FIG. 10 is a flowchart illustrating example methods implemented in a communication system including a host computer, a network node and a wireless device for executing a client application at a wireless device according to some embodiments of the present disclosure
  • FIG. 11 is a flowchart illustrating example methods implemented in a communication system including a host computer, a network node and a wireless device for receiving user data at a wireless device according to some embodiments of the present disclosure
  • FIG. 12 is a flowchart illustrating example methods implemented in a communication system including a host computer, a network node and a wireless device for receiving user data from the wireless device at a host computer according to some embodiments of the present disclosure
  • FIG. 13 is a flowchart illustrating example methods implemented in a communication system including a host computer, a network node and a wireless device for receiving user data at a host computer according to some embodiments of the present disclosure
  • FIG. 14 is a flowchart of an example process in a network node for a unified channel state information (CSI) framework for spatial and power domain adaptation for network energy saving;
  • CSI channel state information
  • FIG. 15 is a flowchart of an example process in a wireless device for a unified channel state information (CSI) framework for spatial and power domain adaptation for network energy saving;
  • CSI channel state information
  • FIG. 16 is a flowchart of another example process in a network node for a unified channel state information (CSI) framework for spatial and power domain adaptation for network energy saving;
  • CSI channel state information
  • FIG. 17 is a flowchart of another example process in a wireless device for a unified channel state information (CSI) framework for spatial and power domain adaptation for network energy saving;
  • CSI channel state information
  • FIG. 18 is a first example of a CSI reporting configuration according to methods disclosed herein;
  • FIG. 19 is a second example of a CSI reporting configuration according to methods disclosed herein;
  • FIG. 20 is a third example of a CSI reporting configuration according to methods disclosed herein;
  • FIG. 21 is a fourth example of a CSI reporting configuration according to methods disclosed herein;
  • FIG. 22 is a fifth example of a CSI reporting configuration according to methods disclosed herein.
  • FIG. 23 is a sixth example of a CSI reporting configuration according to methods disclosed herein.
  • relational terms such as “first” and “second,” “top” and “bottom,” and the like, may be used solely to distinguish one entity or element from another entity or element without necessarily requiring or implying any physical or logical relationship or order between such entities or elements.
  • the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the concepts described herein.
  • the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise.
  • the joining term, “in communication with” and the like may be used to indicate electrical or data communication, which may be accomplished by physical contact, induction, electromagnetic radiation, radio signaling, infrared signaling or optical signaling, for example.
  • electrical or data communication may be accomplished by physical contact, induction, electromagnetic radiation, radio signaling, infrared signaling or optical signaling, for example.
  • Coupled may be used herein to indicate a connection, although not necessarily directly, and may include wired and/or wireless connections.
  • network node may be any kind of network node comprised in a radio network which may further comprise any of base station (BS), radio base station, base transceiver station (BTS), base station controller (BSC), radio network controller (RNC), g Node B (gNB), evolved Node B (eNB or eNodeB), Node B, multistandard radio (MSR) radio node such as MSR BS, multi-cell/multicast coordination entity (MCE), integrated access and backhaul (IAB) node, relay node, donor node controlling relay, radio access point (AP), transmission points, transmission nodes, Remote Radio Unit (RRU) Remote Radio Head (RRH), a core network node (e.g., mobile management entity (MME), self-organizing network (SON) node, a coordinating node, positioning node, MDT node, etc.), an external node (e.g., 3rd party node, anode external to the current network), nodes in distributed antenna system (DAS), DAS
  • wireless device or a user equipment (UE) are used interchangeably.
  • the UE herein may be any type of wireless device capable of communicating with a network node or another UE over radio signals, such as wireless device (WD).
  • the UE may also be a radio communication device, target device, device to device (D2D) UE, machine type UE or UE capable of machine to machine communication (M2M), low-cost and/or low-complexity UE, a sensor equipped with UE, Tablet, mobile terminals, smart phone, laptop embedded equipped (LEE), laptop mounted equipment (LME), USB dongles, Customer Premises Equipment (CPE), an Internet of Things (loT) device, or a Narrowband loT (NB-IOT) device, etc.
  • D2D device to device
  • M2M machine to machine communication
  • M2M machine to machine communication
  • Tablet mobile terminals
  • smart phone laptop embedded equipped (LEE), laptop mounted equipment (LME), USB dongles
  • CPE Customer Premises Equipment
  • LME laptop mounted equipment
  • CPE Customer Premises Equipment
  • NB-IOT Narrowband loT
  • radio network node may be any kind of a radio network node which may comprise any of base station, radio base station, base transceiver station, base station controller, network controller, RNC, evolved Node B (eNB), Node B, gNB, Multi-cell/multicast Coordination Entity (MCE), IAB node, relay node, access point, radio access point, Remote Radio Unit (RRU) Remote Radio Head (RRH).
  • RNC evolved Node B
  • MCE Multi-cell/multicast Coordination Entity
  • IAB node IAB node
  • relay node relay node
  • access point radio access point
  • RRU Remote Radio Unit
  • RRH Remote Radio Head
  • WCDMA Wide Band Code Division Multiple Access
  • WiMax Worldwide Interoperability for Microwave Access
  • UMB Ultra Mobile Broadband
  • GSM Global System for Mobile Communications
  • functions described herein as being performed by a wireless device or a network node may be distributed over a plurality of wireless devices and/or network nodes.
  • the functions of the network node and wireless device described herein are not limited to performance by a single physical device and, in fact, may be distributed among several physical devices.
  • Some embodiments provide a unified channel state information (CSI) framework for spatial and power domain adaptation for network energy saving.
  • CSI channel state information
  • FIG. 8 a schematic diagram of a communication system 10, according to an embodiment, such as a 3 GPP-type cellular network that may support standards such as LTE and/or NR (5G), which comprises an access network 12, such as a radio access network, and a core network 14.
  • the access network 12 comprises a plurality of network nodes 16a, 16b, 16c (referred to collectively as network nodes 16), such as NBs, eNBs, gNBs or other types of wireless access points, each defining a corresponding coverage area 18a, 18b, 18c (referred to collectively as coverage areas 18).
  • Each network node 16a, 16b, 16c is connectable to the core network 14 over a wired or wireless connection 20.
  • a first UE 22a located in coverage area 18a is configured to wirelessly connect to, or be paged by, the corresponding network node 16a.
  • a second UE 22b in coverage area 18b is wirelessly connectable to the corresponding network node 16b. While a plurality of UEs 22a, 22b (collectively referred to as wireless devices 22) are illustrated in this example, the disclosed embodiments are equally applicable to a situation where a sole UE is in the coverage area or where a sole UE is connecting to the corresponding network node 16. Note that although only two UEs 22 and three network nodes 16 are shown for convenience, the communication system may include many more UEs 22 and network nodes 16.
  • a UE 22 may be in simultaneous communication and/or configured to separately communicate with more than one network node 16 and more than one type of network node 16.
  • a UE 22 may have dual connectivity with a network node 16 that supports LTE and the same or a different network node 16 that supports NR.
  • UE 22 may be in communication with an eNB for LTE/E-UTRAN and a gNB for NR/NG-RAN.
  • the communication system 10 may itself be connected to a host computer 24, which may be embodied in the hardware and/or software of a standalone server, a cloud- implemented server, a distributed server or as processing resources in a server farm.
  • the host computer 24 may be under the ownership or control of a service provider, or may be operated by the service provider or on behalf of the service provider.
  • the connections 26, 28 between the communication system 10 and the host computer 24 may extend directly from the core network 14 to the host computer 24 or may extend via an optional intermediate network 30.
  • the intermediate network 30 may be one of, or a combination of more than one of, a public, private or hosted network.
  • the intermediate network 30, if any, may be a backbone network or the Internet. In some embodiments, the intermediate network 30 may comprise two or more sub-networks (not shown).
  • the communication system of FIG. 8 as a whole enables connectivity between one of the connected UEs 22a, 22b and the host computer 24.
  • the connectivity may be described as an over-the-top (OTT) connection.
  • the host computer 24 and the connected UEs 22a, 22b are configured to communicate data and/or signaling via the OTT connection, using the access network 12, the core network 14, any intermediate network 30 and possible further infrastructure (not shown) as intermediaries.
  • the OTT connection may be transparent in the sense that at least some of the participating communication devices through which the OTT connection passes are unaware of routing of uplink and downlink communications.
  • a network node 16 may not or need not be informed about the past routing of an incoming downlink communication with data originating from a host computer 24 to be forwarded (e.g., handed over) to a connected UE 22a. Similarly, the network node 16 need not be aware of the future routing of an outgoing uplink communication originating from the UE 22a towards the host computer 24.
  • a network node 16 is configured to include a CSI configuration unit 32 configured to determine at least one channel state information, CSI, sub-configuration.
  • a wireless device 22 is configured to include a CSI reporting unit 34 which is configured to configure CSI reporting according to a CSI sub-configuration indicated by a sub-configuration indicator received from the network node.
  • a host computer 24 comprises hardware (HW) 38 including a communication interface 40 configured to set up and maintain a wired or wireless connection with an interface of a different communication device of the communication system 10.
  • the host computer 24 further comprises processing circuitry 42, which may have storage and/or processing capabilities.
  • the processing circuitry 42 may include a processor 44 and memory 46.
  • the processing circuitry 42 may comprise integrated circuitry for processing and/or control, e.g., one or more processors and/or processor cores and/or FPGAs (Field Programmable Gate Array) and/or ASICs (Application Specific Integrated Circuitry) adapted to execute instructions.
  • processors and/or processor cores and/or FPGAs Field Programmable Gate Array
  • ASICs Application Specific Integrated Circuitry
  • the processor 44 may be configured to access (e.g., write to and/or read from) memory 46, which may comprise any kind of volatile and/or nonvolatile memory, e.g., cache and/or buffer memory and/or RAM (Random Access Memory) and/or ROM (Read-Only Memory) and/or optical memory and/or EPROM (Erasable Programmable Read-Only Memory).
  • memory 46 may comprise any kind of volatile and/or nonvolatile memory, e.g., cache and/or buffer memory and/or RAM (Random Access Memory) and/or ROM (Read-Only Memory) and/or optical memory and/or EPROM (Erasable Programmable Read-Only Memory).
  • Processing circuitry 42 may be configured to control any of the methods and/or processes described herein and/or to cause such methods, and/or processes to be performed, e.g., by host computer 24.
  • Processor 44 corresponds to one or more processors 44 for performing host computer 24 functions described herein.
  • the host computer 24 includes memory 46 that is configured to store data, programmatic software code and/or other information described herein.
  • the software 48 and/or the host application 50 may include instructions that, when executed by the processor 44 and/or processing circuitry 42, causes the processor 44 and/or processing circuitry 42 to perform the processes described herein with respect to host computer 24.
  • the instructions may be software associated with the host computer 24.
  • the software 48 may be executable by the processing circuitry 42.
  • the software 48 includes a host application 50.
  • the host application 50 may be operable to provide a service to a remote user, such as a UE 22 connecting via an OTT connection 52 terminating at the UE 22 and the host computer 24.
  • the host application 50 may provide user data which is transmitted using the OTT connection 52.
  • the “user data” may be data and information described herein as implementing the described functionality.
  • the host computer 24 may be configured for providing control and functionality to a service provider and may be operated by the service provider or on behalf of the service provider.
  • the processing circuitry 42 of the host computer 24 may enable the host computer 24 to observe, monitor, control, transmit to and/or receive from the network node 16 and or the wireless device 22.
  • the communication system 10 further includes a network node 16 provided in a communication system 10 and including hardware 58 enabling it to communicate with the host computer 24 and with the UE 22.
  • the hardware 58 may include a communication interface 60 for setting up and maintaining a wired or wireless connection with an interface of a different communication device of the communication system 10, as well as a radio interface 62 for setting up and maintaining at least a wireless connection 64 with a UE 22 located in a coverage area 18 served by the network node 16.
  • the radio interface 62 may be formed as or may include, for example, one or more RF transmitters, one or more RF receivers, and/or one or more RF transceivers.
  • the communication interface 60 may be configured to facilitate a connection 66 to the host computer 24.
  • the connection 66 may be direct or it may pass through a core network 14 of the communication system 10 and/or through one or more intermediate networks 30 outside the communication system 10.
  • the hardware 58 of the network node 16 further includes processing circuitry 68.
  • the processing circuitry 68 may include a processor 70 and a memory 72.
  • the processing circuitry 68 may comprise integrated circuitry for processing and/or control, e.g., one or more processors and/or processor cores and/or FPGAs (Field Programmable Gate Array) and/or ASICs (Application Specific Integrated Circuitry) adapted to execute instructions.
  • FPGAs Field Programmable Gate Array
  • ASICs Application Specific Integrated Circuitry
  • the processor 70 may be configured to access (e.g., write to and/or read from) the memory 72, which may comprise any kind of volatile and/or nonvolatile memory, e.g., cache and/or buffer memory and/or RAM (Random Access Memory) and/or ROM (Read-Only Memory) and/or optical memory and/or EPROM (Erasable Programmable Read-Only Memory).
  • volatile and/or nonvolatile memory e.g., cache and/or buffer memory and/or RAM (Random Access Memory) and/or ROM (Read-Only Memory) and/or optical memory and/or EPROM (Erasable Programmable Read-Only Memory).
  • the network node 16 further has software 74 stored internally in, for example, memory 72, or stored in external memory (e.g., database, storage array, network storage device, etc.) accessible by the network node 16 via an external connection.
  • the software 74 may be executable by the processing circuitry 68.
  • the processing circuitry 68 may be configured to control any of the methods and/or processes described herein and/or to cause such methods, and/or processes to be performed, e.g., by network node 16.
  • Processor 70 corresponds to one or more processors 70 for performing network node 16 functions described herein.
  • the memory 72 is configured to store data, programmatic software code and/or other information described herein.
  • the software 74 may include instructions that, when executed by the processor 70 and/or processing circuitry 68, causes the processor 70 and/or processing circuitry 68 to perform the processes described herein with respect to network node 16.
  • processing circuitry 68 of the network node 16 may include a CSI configuration unit 32 configured to determine at least one channel state information, CSI, sub-configuration.
  • the communication system 10 further includes the UE 22 already referred to.
  • the UE 22 may have hardware 80 that may include a radio interface 82 configured to set up and maintain a wireless connection 64 with a network node 16 serving a coverage area 18 in which the UE 22 is currently located.
  • the radio interface 82 may be formed as or may include, for example, one or more RF transmitters, one or more RF receivers, and/or one or more RF transceivers.
  • the hardware 80 of the UE 22 further includes processing circuitry 84.
  • the processing circuitry 84 may include a processor 86 and memory 88.
  • the processing circuitry 84 may comprise integrated circuitry for processing and/or control, e.g., one or more processors and/or processor cores and/or FPGAs (Field Programmable Gate Array) and/or ASICs (Application Specific Integrated Circuitry) adapted to execute instructions.
  • the processor 86 may be configured to access (e.g., write to and/or read from) memory 88, which may comprise any kind of volatile and/or nonvolatile memory, e.g., cache and/or buffer memory and/or RAM (Random Access Memory) and/or ROM (Read-Only Memory) and/or optical memory and/or EPROM (Erasable Programmable Read-Only Memory).
  • memory 88 may comprise any kind of volatile and/or nonvolatile memory, e.g., cache and/or buffer memory and/or RAM (Random Access Memory) and/or ROM (Read-Only Memory) and/or optical memory and/or EPROM (Erasable Programmable Read-Only Memory).
  • the client application 92 may receive request data from the host application 50 and provide user data in response to the request data.
  • the OTT connection 52 may transfer both the request data and the user data.
  • the client application 92 may interact with the user to generate the user data that it provides.
  • the processing circuitry 84 may be configured to control any of the methods and/or processes described herein and/or to cause such methods, and/or processes to be performed, e.g., by UE 22.
  • the processor 86 corresponds to one or more processors 86 for performing UE 22 functions described herein.
  • the UE 22 includes memory 88 that is configured to store data, programmatic software code and/or other information described herein.
  • the software 90 and/or the client application 92 may include instructions that, when executed by the processor 86 and/or processing circuitry 84, causes the processor 86 and/or processing circuitry 84 to perform the processes described herein with respect to UE 22.
  • the processing circuitry 84 of the wireless device 22 may include a CSI reporting unit 34 which is configured to configure CSI reporting according to a CSI sub-configuration indicated by the sub-configuration indicator.
  • the inner workings of the network node 16, UE 22, and host computer 24 may be as shown in FIG. 9 and independently, the surrounding network topology may be that of FIG. 8.
  • the OTT connection 52 has been drawn abstractly to illustrate the communication between the host computer 24 and the wireless device 22 via the network node 16, without explicit reference to any intermediary devices and the precise routing of messages via these devices.
  • Network infrastructure may determine the routing, which it may be configured to hide from the UE 22 or from the service provider operating the host computer 24, or both. While the OTT connection 52 is active, the network infrastructure may further take decisions by which it dynamically changes the routing (e.g., on the basis of load balancing consideration or reconfiguration of the network).
  • the wireless connection 64 between the UE 22 and the network node 16 is in accordance with the teachings of the embodiments described throughout this disclosure.
  • One or more of the various embodiments improve the performance of OTT services provided to the UE 22 using the OTT connection 52, in which the wireless connection 64 may form the last segment. More precisely, the teachings of some of these embodiments may improve the data rate, latency, and/or power consumption and thereby provide benefits such as reduced user waiting time, relaxed restriction on file size, better responsiveness, extended battery lifetime, etc.
  • a measurement procedure may be provided for the purpose of monitoring data rate, latency and other factors on which the one or more embodiments improve.
  • the measurement procedure and/or the network functionality for reconfiguring the OTT connection 52 may be implemented in the software 48 of the host computer 24 or in the software 90 of the UE 22, or both.
  • sensors (not shown) may be deployed in or in association with communication devices through which the OTT connection 52 passes; the sensors may participate in the measurement procedure by supplying values of the monitored quantities exemplified above, or supplying values of other physical quantities from which software 48, 90 may compute or estimate the monitored quantities.
  • the reconfiguring of the OTT connection 52 may include message format, retransmission settings, preferred routing etc.; the reconfiguring need not affect the network node 16, and it may be unknown or imperceptible to the network node 16. Some such procedures and functionalities may be known and practiced in the art.
  • measurements may involve proprietary UE signaling facilitating the host computer’s 24 measurements of throughput, propagation times, latency and the like.
  • the measurements may be implemented in that the software 48, 90 causes messages to be transmitted, in particular empty or ‘dummy’ messages, using the OTT connection 52 while it monitors propagation times, errors, etc.
  • the host computer 24 includes processing circuitry 42 configured to provide user data and a communication interface 40 that is configured to forward the user data to a cellular network for transmission to the UE 22.
  • the cellular network also includes the network node 16 with a radio interface 62.
  • the network node 16 is configured to, and/or the network node’s 16 processing circuitry 68 is configured to perform the functions and/or methods described herein for preparing/initiating/maintaining/supporting/ending a transmission to the UE 22, and/or preparing/terminating/maintaining/ supporting/ending in receipt of a transmission from the UE 22.
  • the host computer 24 includes processing circuitry 42 and a communication interface 40 that is configured to a communication interface 40 configured to receive user data originating from a transmission from a UE 22 to a network node 16.
  • the UE 22 is configured to, and/or comprises a radio interface 82 and/or processing circuitry 84 configured to perform the functions and/or methods described herein for preparing/initiating/maintaining/supporting/ending a transmission to the network node 16, and/or preparing/terminating/maintaining/ supporting/ending in receipt of a transmission from the network node 16.
  • FIGS. 8 and 9 show various “units” such as CSI configuration unit 32, and CSI reporting unit 34 as being within a respective processor, it is contemplated that these units may be implemented such that a portion of the unit is stored in a corresponding memory within the processing circuitry. In other words, the units may be implemented in hardware or in a combination of hardware and software within the processing circuitry.
  • FIG. 10 is a flowchart illustrating an example method implemented in a communication system, such as, for example, the communication system of FIGS. 8 and 2, in accordance with one embodiment.
  • the communication system may include a host computer 24, a network node 16 and a UE 22, which may be those described with reference to FIG. 9.
  • the host computer 24 provides user data (Block S100).
  • the host computer 24 provides the user data by executing a host application, such as, for example, the host application 50 (Block S102).
  • the host computer 24 initiates a transmission carrying the user data to the UE 22 (Block SI 04).
  • the network node 16 transmits to the UE 22 the user data which was carried in the transmission that the host computer 24 initiated, in accordance with the teachings of the embodiments described throughout this disclosure (Block SI 06).
  • the UE 22 executes a client application, such as, for example, the client application 92, associated with the host application 50 executed by the host computer 24 (Block S108).
  • FIG. 11 is a flowchart illustrating an example method implemented in a communication system, such as, for example, the communication system of FIG. 8, in accordance with one embodiment.
  • the communication system may include a host computer 24, a network node 16 and a UE 22, which may be those described with reference to FIGS. 8 and 9.
  • the host computer 24 provides user data (Block SI 10).
  • the host computer 24 provides the user data by executing a host application, such as, for example, the host application 50.
  • the host computer 24 initiates a transmission carrying the user data to the UE 22 (Block SI 12).
  • the transmission may pass via the network node 16, in accordance with the teachings of the embodiments described throughout this disclosure.
  • the UE 22 receives the user data carried in the transmission (Block SI 14).
  • FIG. 12 is a flowchart illustrating an example method implemented in a communication system, such as, for example, the communication system of FIG. 8, in accordance with one embodiment.
  • the communication system may include a host computer 24, a network node 16 and a UE 22, which may be those described with reference to FIGS. 8 and 9.
  • the UE 22 receives input data provided by the host computer 24 (Block SI 16).
  • the UE 22 executes the client application 92, which provides the user data in reaction to the received input data provided by the host computer 24 (Block SI 18).
  • the UE 22 provides user data (Block S120).
  • the UE provides the user data by executing a client application, such as, for example, client application 92 (Block SI 22).
  • client application 92 may further consider user input received from the user.
  • the UE 22 may initiate, in an optional third substep, transmission of the user data to the host computer 24 (Block SI 24).
  • the host computer 24 receives the user data transmitted from the UE 22, in accordance with the teachings of the embodiments described throughout this disclosure (Block SI 26).
  • FIG. 13 is a flowchart illustrating an example method implemented in a communication system, such as, for example, the communication system of FIG. 8, in accordance with one embodiment.
  • the communication system may include a host computer 24, a network node 16 and a UE 22, which may be those described with reference to FIGS. 8 and 9.
  • the network node 16 receives user data from the UE 22 (Block SI 28).
  • the network node 16 initiates transmission of the received user data to the host computer 24 (Block SI 30).
  • the host computer 24 receives the user data carried in the transmission initiated by the network node 16 (Block SI 32).
  • FIG. 14 is a flowchart of an example process in a network node 16 for a unified channel state information (CSI) framework for spatial and power domain adaptation for network energy saving.
  • One or more blocks described herein may be performed by one or more elements of network node 16 such as by one or more of processing circuitry 68 (including the CSI configuration unit 32), processor 70, radio interface 62 and/or communication interface 60.
  • Network node 16 such as via processing circuitry 68 and/or processor 70 and/or radio interface 62 and/or communication interface 60 is configured to determine at least one channel state information, CSI, sub-configuration (Block SI 34).
  • the process also includes transmitting a sub-configuration indicator to configure the UE 22 with at least one of the at least one CSI sub-configuration within a CSI reporting configuration, the CSI sub-configuration including an adaptation parameter setting for at least one of a spatial domain and a power domain (Block S136).
  • the CSI reporting configuration is associated with at least one CSI resource configuration that contain at least one resource set on which the UE 22, when triggered, is configured to measure CSI based on the adaptation parameter setting.
  • a sub-configuration includes at least one of a power parameter, a number of antenna ports, a number of antenna elements, an adaptation delay, quasicollocation, QCL, source information, a number of CSI reports and a codebook subset restriction indication.
  • the method also includes indicating a trigger state to the UE 22 based on at least one of the at least one CSI sub-configuration.
  • the trigger state points to a CSI reference signal resource set.
  • FIG. 15 is a flowchart of an example process in a UE 22 according to some embodiments of the present disclosure.
  • One or more blocks described herein may be performed by one or more elements of UE 22 such as by one or more of processing circuitry 84 (including the CSI reporting unit 34), processor 86, radio interface 82 and/or communication interface 60.
  • UE 22 such as via processing circuitry 84 and/or processor 86 and/or radio interface 82 is configured to receive a sub-configuration indicator indicating at least one channel state information, CSI, sub-configuration within a CSI reporting configuration, the CSI sub-configuration including an adaptation parameter setting for at least one of a spatial domain and a power domain (Block SI 38).
  • the process also includes configuring CSI reporting according to a CSI sub-configuration indicated by the sub-configuration indicator (Block S140).
  • the CSI reporting configuration is associated with at least one CSI resource configuration that contain at least one resource set on which the UE 22, when triggered, is configured to measure CSI based on the adaptation parameter setting.
  • a sub-configuration includes at least one of a power parameter, a number of antenna ports, a number of antenna elements, an adaptation delay, quasicollocation, QCL, source information, a number of CSI reports and a codebook subset restriction indication.
  • the method further includes receiving a trigger state indication indicating at least one of the at least one CSI sub-configuration.
  • the trigger state points to a CSI reference signal resource set.
  • FIG. 16 is a flowchart of an example process in a network node 16 for a unified channel state information (CSI) framework for spatial and power domain adaptation for network energy saving.
  • One or more blocks described herein may be performed by one or more elements of network node 16 such as by one or more of processing circuitry 68 (including the CSI configuration unit 32), processor 70, radio interface 62 and/or communication interface 60.
  • Network node 16 such as via processing circuitry 68 and/or processor 70 and/or radio interface 62 and/or communication interface 60 is configured to transmit at least one channel state information, CSI, reporting subconfiguration within a CSI reporting configuration, each of the at least one CSI reporting subconfigurations having at least one of a spatial domain adaptation parameter setting and a power domain adaptation parameter setting, at least one of the at least one CSI reporting subconfiguration having a power domain adaptation parameter setting, and at least one of the at least one CSI reporting subconfiguration having a spatial domain adaption parameter setting (Block SI 42).
  • the method includes transmitting at least one subconfiguration indicator configured within an aperiodic trigger state, each of the at least one subconfiguration indicator indicating at least one of the at least one CSI reporting subconfiguration within the CSI reporting configuration (Block S144).
  • the method further includes transmitting an indication of the aperiodic trigger state and, in response to the indication of the aperiodic trigger state, receiving at least one CSI based on at least one of the at least one CSI reporting subconfiguration indicated by the at least one subconfiguration indicator in the aperiodic trigger state (Block SI 46).
  • the receiving at least one CSI comprises receiving a CSI based on each of the CSI reporting subconfiguration indicated by the at least one subconfiguration indicator in the aperiodic trigger state.
  • at least one of the at least one CSI reporting subconfiguration comprises both a spatial domain adaptation parameter setting and a power domain adaptation parameter setting.
  • the indication of the aperiodic trigger state comprises a codepoint of a Downlink Control Information, DCI, field.
  • a number of the at least one CSI reporting configuration is within a maximum number of CSI reporting configurations supported by the UE.
  • FIG. 17 is a flowchart of an example process in a UE 22 according to some embodiments of the present disclosure.
  • One or more blocks described herein may be performed by one or more elements of UE 22 such as by one or more of processing circuitry 84 (including the CSI reporting unit 34), processor 86, radio interface 82 and/or communication interface 60.
  • UE 22 such as via processing circuitry 84 and/or processor 86 and/or radio interface 82 is configured to receive at least one channel state information, CSI, reporting subconfiguration configured within a CSI reporting configuration, each of the at least one CSI reporting subconfigurations having at least one of a spatial domain adaptation parameter setting and a power domain adaptation parameter setting, at least one of the at least one CSI reporting subconfiguration having a power domain adaptation parameter setting, and at least one of the at least one CSI reporting subconfiguration having a spatial domain adaption parameter setting (Block S148).
  • the method also includes receiving at least one subconfiguration indicator configured within an aperiodic trigger state, each of the at least one subconfiguration indicator indicating at least one of the at least one CSI reporting subconfiguration within the CSI reporting configuration (Block S150).
  • the method also includes receiving an indication of the aperiodic trigger state (Block SI 52).
  • the method further includes, in response to the indication of the aperiodic trigger state, measuring and reporting at least one CSI based on at least one of the at least one CSI reporting subconfiguration indicated by the at least one subconfiguration indicator in the aperiodic trigger state (Block SI 54).
  • the at least one of the CSI reporting subconfiguration having a power domain adaption parameter setting and the at least one of the at least on CSI reporting subconfiguration having a spatial domain adaption parameter setting may be the same CSI reporting subconfiguration or different CSI reporting subconfigurations.
  • the measuring and reporting at least one CSI comprises measuring and reporting a CSI based on each of the CSI reporting subconfiguration indicated by the at least one subconfiguration indicator in the aperiodic trigger state.
  • at least one of the at least one CSI reporting subconfiguration comprises both a spatial domain adaptation parameter setting and a power domain adaptation parameter setting.
  • the measuring and reporting of at least one CSI includes measuring and reporting CSI according to both the spatial domain adaptation parameter setting and the power domain adaptation parameter setting for the at least one of the at least one CSI reporting subconfiguration comprising both the spatial domain adaption parameter setting and the power domain adaption parameter setting.
  • the measuring and reporting CSI comprises measuring CSI on at least one channel state information reference signal, CSI-RS, resource configured within a set of CSI-RS resources.
  • the indication of the aperiodic trigger state comprises a codepoint of a Downlink Control Information, DCI, field.
  • reporting the at least one CSI comprises reporting CSI on Physical Uplink Shared Control Channel, PUSCH.
  • the method includes reporting a capability of a maximum number of CSI reporting subconfigurations supported by the UE.
  • the spatial domain adaptation parameter setting comprises an antenna port muting pattern.
  • the antenna port muting pattern indicates a subset of ports on which to measure and report CSI.
  • the antenna ports are ports of a CSI-RS.
  • a spatial domain adaptation parameter comprises an indication of a codebook subset restriction.
  • a power domain adaptation parameter comprises a physical downlink shared channel, PDSCH, to CSI-RS power offset.
  • a UE 22 is configured and dynamically triggered to measure and report CSI on an UL channel corresponding to one or more spatial domain adaptation settings and/or one or more power domain adaptation settings in a unified CSI framework applicable to both adaptation types, used in isolation or in combination.
  • the UE 22 may be configured with the following:
  • One or more sub-configurations configured within a CSI reporting configuration (e.g., within the information element CSI-ReportConfig) where a subconfiguration contains a particular combination of spatial and/or power domain adaptation parameter settings;
  • One or more sub-configuration indicators configured within an aperiodic trigger state (e.g., within the information element CSI-AperiodicTriggerStateList) that each point to a sub-configuration within a CSI reporting configuration; and/or
  • One or more CSI resource configurations (e.g., the information element CSI-ResourceConfig) associated with the CSI reporting configuration which contains one or more CSI-RS resource sets on which the UE 22, when triggered, measures CSI based on the spatial and/or power domain adaptation parameter settings in a sub-configuration.
  • Each CSI-RS resource set contains one or more CSI-RS resources or indicators (ID) of one or more CSI-RS resources.
  • a sub-configuration may include one or more of the following power and/or spatial domain adaptation parameter settings for which the UE 22 may measure and report CSI.
  • Non-limiting examples include:
  • a PDSCH-to-CSI-RS power offset e.g., parameter powerControlOffset
  • a CSI-RS to SSB power offset e.g., parameter powerControlOffsetSS
  • Indicator of a potential spatial or power adaptation delay e.g., ⁇ 0,0,5,l,1.5,..,3 ⁇ ms or in terms of slots and so on;
  • QCL Quasi co-location
  • the UE 22 may be indicated a trigger state, and based on all, or a subset, of the indicated sub-configuration(s), the UE 22 may measure and report one or more CSIs, in some embodiments.
  • the trigger state maps 1:1 to a codepoint (bit sequence) of a DCI field, e.g., DCI 0 1, DCI 0 2.
  • the CSI is reported on PUSCH.
  • This embodiment is illustrated by way of an example shown in FIG. 16.
  • Trigger State 1 is configured with a list of 3 sub-configuration indicators ⁇ 1,2,3 ⁇ , hence if the UE 22 is indicated with this trigger state, it measures and reports 3 CSIs according to the spatial and/or power domain adaptation settings in sub-configurations 1, 2, and 3, respectively.
  • This trigger state may be used, for example, for the network node 16 to obtain CSIs for multiple spatial/power domain adaptation parameter settings. These may be considered as hypotheses, and the network node 16 may use them along with other power saving criteria to decide which settings it prefers to adapt.
  • the trigger state may be the one that indicates the sub-configuration with the spatial/power domain adaptation parameter setting that the network node 16 selected. For example, if the network node 16 decides on the spatial/power domain parameter settings in subconfiguration 2, it may indicate Trigger State 3 to the UE 22 for future CSI requests. The UE 22 would then report CSI based on the power/spatial domain adaptation parameter settings in sub-configuration 2.
  • This example configuration may be used at least for the following adaptation types (see above definition of Type 1 spatial domain adaptation):
  • sub-configurations 1, 2, 3 each contain only a value of the PDSCH-to-CSI-RS power offset powerControlOffset, e.g., 0, - 3, -6 dB, respectively;
  • sub-configurations 1, 2, 3 each contain only configuration information for 3 different antenna port muting patterns.
  • the information for each pattern could be as simple as a subset of ports on which to measure and report CSI;
  • one or more sub-configurations contain both a value of the PDSCH-to-CSI-RS power offset powerControlOffset as well as configuration information for an antenna port muting pattern.
  • Embodiment # 1 is a variation of Embodiment # 1 in which:
  • At least one trigger state points to a CSI-RS resource set within a CSI resource configuration (CSI-ResourceConfig) that contains N CSI-RS resources, where N > 1;
  • CSI-ResourceConfig CSI resource configuration
  • the trigger state may be configured according to one of the following example methods: o Sub-configuration indicator is absent (not configured):
  • the CSI reporting configuration (CSI- ReportConfig) linked to this trigger state may or may not contain subconfigurations; o Sub-configuration indicator is present;
  • the UE 22 reports N CSIs, one per CSI-RS resource in said CSI-RS resource set.
  • the UE 22 is indicated either explicitly or implicitly to report multiple CSIs:
  • the UE 22 is configured with an RRC parameter indicating that multiple CSIs are requested as well as the reporting type: o
  • RRC parameter reportQuantity indicates that multiple CSIs are requested as well as the reporting type: o
  • RI rank indicator
  • PMI precoder matrix indicator
  • CQI channel quality indicator
  • Implicit method o
  • the UE 22 reports N CSIs if one or more sub-configuration indicators are present in the trigger state.
  • the presence of a sub-configuration indicator in the trigger state may be used as an implicit indicator that the UE 22 should report multiple CSIs.
  • the UE 22 reports K CSIs where 2 ⁇ K ⁇ N where K is a parameter configured within the CSI reporting configuration or within a sub-configuration.
  • the UE 22 reports M*N CSIs where M is the number of sub-configuration indicators configured in said trigger state, if present.
  • the UE 22 reports M*K CSIs where M is the number of sub-configuration indicators configured in said trigger state, if present.
  • FIG. 17 This embodiment is illustrated by way of an example shown in FIG. 17 In this example, there are:
  • a trigger state indicator is absent in all trigger states
  • each trigger state points to a single one amongst 4 different NZP CSI-RS resource sets configured within CSI-ResourceConfig.
  • Trigger State 1 points to a CSI-RS resource set configured with 3 CSI-RS resources.
  • the UE 22 measures and reports ⁇ RI, PMI, CQI ⁇ for each of the 3 CSI-RS resources in the set.
  • This trigger state may be used, for example, for the network node 16 to obtain CSIs for multiple Type 2 antenna muting patterns (see above for definition of Type2 antenna muting).
  • the 3 CSI-RS resources may be configured with three different values of the CSI-RS to SSB power offset parameter powerControlOffsetSS, e.g., 0, -3, -6 dB, respectively. These may be considered as hypotheses, and the network node 16 may use them along with other power saving criteria to decide which settings it prefers to adapt.
  • the network node 16 may indicate to the UE 22 one of the other trigger states that point to a CSI-RS resource set with only a single CSI-RS resource for future CSI requests.
  • Embodiment # 1 and/or 2 This embodiment is a variation of Embodiment # 1 and/or 2 in which:
  • At least one sub-configuration within a CSI reporting configuration contains a parameter that points to a CSI-RS resource set configured within a CSI resource configuration (CSI-ResourceConfig): o
  • the indicator may be a new RRC parameter, e.g., resourceSet2;
  • At least one trigger state contains a sub-configuration indicator that indicates said sub-configuration; and/or • For said trigger state, the UE 22 ignores the legacy parameter resourceSet configured within said trigger state. Instead, the UE 22 measures and reports CSI(s) based on the CSI-RS resource indicated by said parameter within the said sub-configuration.
  • This embodiment is illustrated by way of an example shown in FIG. 18.
  • Each trigger state contains a sub-configuration indicator: o
  • the UE 22 ignores the parameter resourceSet (marked with ‘X’);
  • the report configuration contains 4 sub-configurations: o Each sub-configuration contains a new parameter resourceSet2 that indicates a CSI-RS resource set configured in the CSI resource configuration (CSI- ResourceConfig).
  • the resourceSet parameter value was ignored and the CSI- ReportConfig sub-configurations were used to indicate the CSI resource sets to be used for each sub-configuration.
  • the parameter resourceSet may then be excluded from the trigger state IE for UEs supporting this enhanced CSI reporting mechanism.
  • the resourceSet parameter in the trigger state definitions may be used, similar to legacy approaches, to identify the NZP-CSI-RS-ResourceSet to be used, while the CSI-ReportConfig sub-configurations indicate sub-configuration-specific reporting parameters, according to some embodiments. This may reduce the size of the sub-config IES in CSI-ReportConfig information and utilize the parameter resourceSet for useful signaling. See FIG. 19.
  • the existing IE CSI-ReportConfig or IE CodebookConfig or both may be extended to enable network to configure aperiodic CSI, semipersistent CSI or periodic CSI. This enables UE 22 to derive and report CSI based on one or more of the following power and/or spatial domain adaptation parameter settings for which the UE 22 will measure and report CSI.
  • a PDSCH-to-CSI-RS power offset e.g., parameter powerControlOffset
  • a CSI-RS to SSB power offset e.g., parameter powerControlOffsetSS
  • the resourceForChannel configured for aperiodic CSI in the CSI-AssociatedReportConfiglnfo an element of list associatedReportConfiglnfoList in IE CSI-AperiodicTriggerState, points to a CSI-RS resource set within a CSI resource configuration (CSI-ResourceConfig) that contains N CSI-RS resources, where N > 1.
  • CSI-ResourceConfig CSI resource configuration
  • the UE 22 reports based on X best channel RS hypothesis together with the index of the CSI- RS. In some embodiments, how the UE 22 performs the reports may be specified. In some embodiments, it is network configured and may involve a threshold e.g., on rank, or CQI. Or it may include a rule specifying how to define “best”, it may be higher rank, or sum of CQIs. In some embodiments, a similar change is made to channel resources associated in the periodic or semipersistent reporting.
  • a group common DCI or a group common control signal may be used in order to ask multiple UEs to measure CSI-RS resources related to nonexclusive examples of spatial or power adaptation, and report, e.g., on physical uplink control channel (PUCCH) or physical uplink shared channel (PUSCH).
  • PUCCH physical uplink control channel
  • PUSCH physical uplink shared channel
  • each UE 22 is configured with a dedicated adaptation configuration as disclosed herein.
  • a first UE 22 may be configured with a first set of configurations, and a second UE 22 with a second set of configurations e.g., through RRC signaling.
  • the first and second configurations differ at least in one configuration parameter, e.g., based on the received UE 22 capabilities.
  • the UEs may be configured with similar configurations, e.g., if they report the same capabilities, or based on the previous measurements, the UEs experience similar channel conditions, e.g., same rank, reference signal received power (RSRP), reference signal received quality (RSRQ), or other parameters.
  • RSRP reference signal received power
  • RSRQ reference signal received quality
  • the UE 22 may receive a configuration regarding a DCI, e.g., and existing DCI associated with a group common radio network temporary identifier (RNTI) or a new DCI format, and additionally may receive a configuration of a bitfield that asks the UE 22 to measure and report CSI based on a set of CSI-RS resources.
  • RNTI group common radio network temporary identifier
  • the UE 22 receives the size of the DCI as well as the starting and end of its associated bitfield through higher layer signaling.
  • the resources over which the UE 22 should report the measurements is configured through higher layer signaling, while in some embodiments, the resources are indicated in the triggering DCI.
  • the bitfield associated with a first UE 22 is the same as the bitfield associated with a second UE 22. This is particularly useful if both UEs is able to measure e.g., the same CSI-RS resources or report over the same resources, or based on pre-configured resources.
  • Embodiment #6 is particularly useful if both UEs is able to measure e.g., the same CSI-RS resources or report over the same resources, or based on pre-configured resources.
  • one single trigger state may point out multiple subconfigurations.
  • the network node 16 cannot or does not want to configure the UE 22 with multiple trigger states.
  • the UE 22 may not be capable of handling more than certain number of trigger states.
  • the UE 22 capability maxNumberAperiodicCSI-triggeringStatePerCC is only set to n3 (i.e., three trigger states maximum per CC) and the network node 16 already needs those trigger states as regular (without sub-configuration) trigger states.
  • the various trigger states may have the same configuration parameters except for the subconfigurations and the network node 16 does not wish to maintain or repeat the very same configuration parameter in multiple trigger state configurations.
  • the trigger states are extended with sub-configurations which are “latent’ ’/’’inactive” until explicitly triggered/activated by a DCI or an indicator in the DCI.
  • a DCI such a structure is shown in FIG. 20, in which Trigger State 1 is used both as a regular trigger state and as a trigger state with sub configurations.
  • the behavior of the UE 22 with respect to this trigger state may be controlled via an indicator in the DCI (called SubConfigTriggerlndicator in the figure).
  • a binary indicator may be used in the DCI. If the Indicator is not present, or set to 0, the UE 22 acts as if the trigger state is a regular trigger state. If on the other hand, the SubConfigTriggerlndicator is present and set to 1, then the UE 22 treats the trigger state as one with sub-configuration indicator ( ⁇ 1,2,3 ⁇ in this case).
  • Some embodiments may be extended to point out more than a single subconfiguration in the trigger state. For example, more bits may be used in the DCI to point out various sub-configurations of a certain trigger state. This is exemplified in FIG. 21, where 2 bits in the DCI are used to point out various sub-configurations of Trigger State 1. As an example, if the SubConfigTriggerlndicator of DCI is set to 00 or not present, then the UE 22 treats the Trigger State as a regular trigger state, whereas if the DCI is set to e.g., 01, it means that the first subConfigindicator of Trigger State 1 is activated.
  • a UE 22 supporting the enhanced CSI reporting mechanism described in the above embodiments may indicate via UE 22 capability the maximum number of subconfigurations that it may support for the enhanced CSI calculation.
  • the total sub-configuration budget may be part of the total configuration budget, i.e., each sub-configuration may be counted as equivalent to a configuration in legacy signaling.
  • the configuration and sub-configuration budgets may be separate, e.g., if CSI estimates for multiple sub-configurations may be obtained with reduced measurement and/or computation effort compared to individual legacy configurations.
  • a UE 22 supporting the enhanced CSI reporting mechanism in the above embodiments may indicate via UE 22, capability the maximum number of simultaneous CSI reports indicated by a sub-configuration indicator in a trigger state that it may support for the enhanced CSI reporting when one or more secondary cells (Scells) are deactivated or in a dormant bandwidth part (BWP). This may enable a UE 22 to borrow the CSI computation resources from another carrier when the other carrier is not in use (e.g., deactivated or in dormant bandwidth part (BWP)). The UE 22 may also indicate the Scells/ carriers from which CSI computation resources may be borrowed for the purposes of enhanced CSI reporting on a given cell/carrier.
  • Embodiment Al Embodiment Al .
  • a network node configured to communicate with a wireless device (WD), the network node configured to, and/or comprising a radio interface and/or comprising processing circuitry configured to: determine at least one channel state information, CSI, sub-configuration; and transmit a sub-configuration indicator to configure the WD with at least one of the at least one CSI sub-configuration within a CSI reporting configuration, the CSI subconfiguration including an adaptation parameter setting for at least one of a spatial domain and a power domain.
  • a wireless device WD
  • the network node configured to, and/or comprising a radio interface and/or comprising processing circuitry configured to: determine at least one channel state information, CSI, sub-configuration; and transmit a sub-configuration indicator to configure the WD with at least one of the at least one CSI sub-configuration within a CSI reporting configuration, the CSI subconfiguration including an adaptation parameter setting for at least one of a spatial domain and a power domain.
  • Embodiment A2 The network node of Embodiment Al , wherein the CSI reporting configuration is associated with at least one CSI resource configuration that contain at least one resource set on which the WD, when triggered, is configured to measure CSI based at least in part on the adaptation parameter setting.
  • Embodiment A3 The network node of any of Embodiments Al and A2, wherein a sub-configuration includes at least one of a power parameter, a number of antenna ports, a number of antenna elements, an adaptation delay, quasi-collocation, QCL, source information, a number of CSI reports and a codebook subset restriction indication.
  • Embodiment A4 The network node of any of Embodiments Al -A3, wherein the network node, radio interface and/or processing circuitry are configured to indicate a trigger state to the WD based at least in part on at least one of the at least one CSI subconfiguration.
  • Embodiment Bl A method implemented in a network node, the method comprising: determining at least one channel state information, CSI, sub-configuration; and transmitting a sub-configuration indicator to configure the WD with at least one of the at least one CSI sub-configuration within a CSI reporting configuration, the CSI subconfiguration including an adaptation parameter setting for at least one of a spatial domain and a power domain.
  • Embodiment B2 The method of Embodiment Bl, wherein the CSI reporting configuration is associated with at least one CSI resource configuration that contain at least one resource set on which the WD, when triggered, is configured to measure CSI based at least in part on the adaptation parameter setting.
  • Embodiment B3 The method of any of Embodiments Bl and B2, wherein a sub-configuration includes at least one of a power parameter, a number of antenna ports, a number of antenna elements, an adaptation delay, quasi-collocation, QCL, source information, a number of CSI reports and a codebook subset restriction indication.
  • Embodiment B4 The method of any of Embodiments B1-B3, further comprising indicating a trigger state to the WD based at least in part on at least one of the at least one CSI sub-configuration.
  • Embodiment B5. The method of Embodiment B4, wherein the trigger state points to a CSI reference signal resource set.
  • a wireless device configured to communicate with a network node, the WD configured to, and/or comprising a radio interface and/or processing circuitry configured to: receive a sub-configuration indicator indicating at least one channel state information, CSI, sub-configuration within a CSI reporting configuration, the CSI subconfiguration including an adaptation parameter setting for at least one of a spatial domain and a power domain; and configure CSI reporting according to a CSI sub-configuration indicated by the subconfiguration indicator.
  • Embodiment C2 The WD of Embodiment Cl, wherein the CSI reporting configuration is associated with at least one CSI resource configuration that contain at least one resource set on which the WD, when triggered, is configured to measure CSI based at least in part on the adaptation parameter setting.
  • Embodiment C3 The WD of any of Embodiments Cl and C2, wherein a subconfiguration includes at least one of a power parameter, a number of antenna ports, a number of antenna elements, an adaptation delay, quasi-collocation, QCL, source information, a number of CSI reports and a codebook subset restriction indication.
  • Embodiment C5 The WD of Embodiment C4, wherein the trigger state points to a CSI reference signal resource set.
  • Embodiment DI A method implemented in a wireless device (WD), the method comprising: receiving a sub-configuration indicator indicating at least one channel state information, CSI, sub-configuration within a CSI reporting configuration, the CSI sub- configuration including an adaptation parameter setting for at least one of a spatial domain and a power domain; and configuring CSI reporting according to a CSI sub-configuration indicated by the sub-configuration indicator.
  • a sub-configuration indicator indicating at least one channel state information, CSI, sub-configuration within a CSI reporting configuration, the CSI sub- configuration including an adaptation parameter setting for at least one of a spatial domain and a power domain.
  • Embodiment D2 The method of Embodiment DI, wherein the CSI reporting configuration is associated with at least one CSI resource configuration that contain at least one resource set on which the WD, when triggered, is configured to measure CSI based at least in part on the adaptation parameter setting.
  • Embodiment D4 The method of any of Embodiments D1-D3, further comprising receiving a trigger state indication indicating at least one of the at least one CSI sub-configuration.
  • Embodiment D5 The method of Embodiment D4, wherein the trigger state points to a CSI reference signal resource set.
  • the concepts described herein may be embodied as a method, data processing system, computer program product and/or computer storage media storing an executable computer program. Accordingly, the concepts described herein may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects all generally referred to herein as a “circuit” or “module.” Any process, step, action and/or functionality described herein may be performed by, and/or associated to, a corresponding module, which may be implemented in software and/or firmware and/or hardware. Furthermore, the disclosure may take the form of a computer program product on a tangible computer usable storage medium having computer program code embodied in the medium that may be executed by a computer. Any suitable tangible computer readable medium may be utilized including hard disks, CD-ROMs, electronic storage devices, optical storage devices, or magnetic storage devices.
  • the computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks.
  • Computer program code for carrying out operations of the concepts described herein may be written in an object oriented programming language such as Python, Java® or C++.
  • the computer program code for carrying out operations of the disclosure may also be written in conventional procedural programming languages, such as the “C” programming language.
  • the program code may execute entirely on the user’s computer, partly on the user’s computer, as a stand-alone software package, partly on the user’s computer and partly on a remote computer or entirely on the remote computer.
  • the remote computer may be connected to the user’s computer through a local area network (LAN) or a wide area network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet Service Provider).
  • LAN local area network
  • WAN wide area network
  • Internet Service Provider for example, AT&T, MCI, Sprint, EarthLink, MSN, GTE, etc.

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Abstract

Sont divulgués un procédé, un nœud de réseau et un équipement utilisateur (UE) pour un cadre d'informations d'état de canal (CSI) unifié permettant une adaptation de domaine spatial et de puissance en vue d'économomiser l'énergie du réseau. Selon un aspect, un procédé dans un UE consiste à recevoir au moins une sous-configuration de rapport d'informations d'état de canal (CSI) configurée dans une configuration de rapport de CSI, chacune de la ou des sous-configurations de rapport de CSI ayant un paramétrage d'adaptation de domaine spatial et/ou un paramétrage d'adaptation de domaine de puissance. Le procédé consiste également à : recevoir au moins un indicateur de sous-configuration configuré dans un état de déclenchement apériodique, chaque indicateur, parmi l'indicateur ou les indicateurs de sous-configuration, indiquant au moins une configuration parmi la ou les sous-configurations de rapport de CSI dans la configuration de rapport de CSI; et recevoir une indication de l'état de déclenchement apériodique. Le procédé consiste, en réponse à l'indication de l'état de déclenchement apériodique, à mesurer et rapporter au moins une CSI d'après au moins une sous-configuration parmi la ou les sous-configurations de rapport de CSI indiquées par l'indicateur ou les indicateurs de sous-configuration dans l'état de déclenchement apériodique.
PCT/EP2024/059206 2023-04-04 2024-04-04 Cadre d'informations d'état de canal (csi) unifié pour une adaptation de domaine spatial et de puissance en vue d'économiser l'énergie du réseau WO2024208978A1 (fr)

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Publication number Priority date Publication date Assignee Title
WO2022152925A1 (fr) * 2021-01-18 2022-07-21 Telefonaktiebolaget Lm Ericsson (Publ) Dispositif sans fil, premier nœud et procédés mis en œuvre par celui-ci, pour gérer une première indication

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022152925A1 (fr) * 2021-01-18 2022-07-21 Telefonaktiebolaget Lm Ericsson (Publ) Dispositif sans fil, premier nœud et procédés mis en œuvre par celui-ci, pour gérer une première indication

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Title
ERICSSON: "CSI-MeasConfig signalling structure", 2 March 2018, 3GPP DRAFT; R2-1803961 CSI-MEASCONFIG SIGNALLING STRUCTURE, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, XP051401000 *

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