WO2020061840A1 - Signalement de csi sans introduction complète de présence de csi-rs - Google Patents

Signalement de csi sans introduction complète de présence de csi-rs Download PDF

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Publication number
WO2020061840A1
WO2020061840A1 PCT/CN2018/107701 CN2018107701W WO2020061840A1 WO 2020061840 A1 WO2020061840 A1 WO 2020061840A1 CN 2018107701 W CN2018107701 W CN 2018107701W WO 2020061840 A1 WO2020061840 A1 WO 2020061840A1
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WO
WIPO (PCT)
Prior art keywords
csi
threshold
resources
threshold value
nzp
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PCT/CN2018/107701
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English (en)
Inventor
Chenxi HAO
Yu Zhang
Peter Gaal
Wanshi Chen
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Qualcomm Incorporated
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Application filed by Qualcomm Incorporated filed Critical Qualcomm Incorporated
Priority to PCT/CN2018/107701 priority Critical patent/WO2020061840A1/fr
Priority to PCT/CN2019/106600 priority patent/WO2020063434A1/fr
Publication of WO2020061840A1 publication Critical patent/WO2020061840A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • 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

  • a wireless multiple-access communication system may include a number of base stations (BSs) , which are each capable of simultaneously supporting communication for multiple communication devices, otherwise known as user equipments (UEs) .
  • BSs base stations
  • UEs user equipments
  • a set of one or more base stations may define an eNodeB (eNB) .
  • eNB eNodeB
  • a wireless multiple access communication system may include a number of distributed units (DUs) (e.g., edge units (EUs) , edge nodes (ENs) , radio heads (RHs) , smart radio heads (SRHs) , transmission reception points (TRPs) , etc.
  • DUs distributed units
  • EUs edge units
  • ENs edge nodes
  • RHs radio heads
  • SSRHs smart radio heads
  • TRPs transmission reception points
  • the apparatus generally includes at least one processor configured to determine channel state information (CSI) reporting configuration information configuring a user equipment to perform CSI measurement and reporting, based on one or more CSI reference signals (CSI-RSs) , in one or more subbands (SBs) of a bandwidth part (BWP) of a system bandwidth wherein the CSI reporting configuration includes an SB size configuration, determine a CSI-RS resource configuration associated with the CSI reporting configuration, transmit the CSI reporting configuration and the CSI-RS resource configuration to the UE, and receive a CSI report corresponding to a first SB if the first SB includes a valid CSI presence based on whether one or more threshold conditions, involving CSI-RS resources included in the first SB, are satisfied.
  • the apparatus also generally includes a memory coupled with the at least one processor.
  • the one or more aspects comprise the features hereinafter fully described and particularly pointed out in the claims.
  • the following description and the appended drawings set forth in detail certain illustrative features of the one or more aspects. These features are indicative, however, of but a few of the various ways in which the principles of various aspects may be employed.
  • FIG. 1 is a block diagram conceptually illustrating an example telecommunications system, in accordance with certain aspects of the present disclosure.
  • FIGs. 11A-11C illustrate example scenarios for determining whether a subband includes a valid channel state information reference signal resource presence, in accordance with certain aspects of the present disclosure
  • FIGs. 12A-12C illustrate example scenarios for determining whether a subband includes a valid channel state information reference signal resource presence, in accordance with certain aspects of the present disclosure
  • FIG. 13 illustrates a communications device that may include various components configured to perform operations for the techniques disclosed herein in accordance with aspects of the present disclosure.
  • New radio (NR) access may support various wireless communication services, such as enhanced mobile broadband (eMBB) targeting wide bandwidth (e.g., 80 MHz or beyond) , millimeter wave (mmW) targeting high carrier frequency (e.g., 25 GHz or beyond) , massive machine type communications MTC (mMTC) targeting non-backward compatible MTC techniques, and/or mission critical targeting ultra-reliable low-latency communications (URLLC) .
  • eMBB enhanced mobile broadband
  • mmW millimeter wave
  • mMTC massive machine type communications MTC
  • URLLC ultra-reliable low-latency communications
  • These services may include latency and reliability requirements.
  • These services may also have different transmission time intervals (TTI) to meet respective quality of service (QoS) requirements.
  • TTI transmission time intervals
  • QoS quality of service
  • these services may co-exist in the same subframe.
  • the wireless network 100 may include a number of base stations (BSs) 110 and other network entities.
  • a BS may be a station that communicates with user equipments (UEs) .
  • Each BS 110 may provide communication coverage for a particular geographic area.
  • the term “cell” can refer to a coverage area of a Node B (NB) and/or a Node B subsystem serving this coverage area, depending on the context in which the term is used.
  • gNB next generation NodeB
  • NR BS new radio base station
  • 5G NB access point
  • AP access point
  • TRP transmission reception point
  • any number of wireless networks may be deployed in a given geographic area.
  • Each wireless network may support a particular radio access technology (RAT) and may operate on one or more frequencies.
  • a RAT may also be referred to as a radio technology, an air interface, etc.
  • a frequency may also be referred to as a carrier, a subcarrier, a frequency channel, a tone, a subband, etc.
  • Each frequency may support a single RAT in a given geographic area in order to avoid interference between wireless networks of different RATs.
  • NR or 5G RAT networks may be deployed.
  • a base station may provide communication coverage for a macro cell, a pico cell, a femto cell, and/or other types of cells.
  • a macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs with service subscription.
  • a pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscription.
  • a femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by UEs having an association with the femto cell (e.g., UEs in a Closed Subscriber Group (CSG) , UEs for users in the home, etc. ) .
  • CSG Closed Subscriber Group
  • a BS for a macro cell may be referred to as a macro BS.
  • a BS for a pico cell may be referred to as a pico BS.
  • a BS for a femto cell may be referred to as a femto BS or a home BS.
  • the BSs 110a, 110b and 110c may be macro BSs for the macro cells 102a, 102b and 102c, respectively.
  • the BS 110x may be a pico BS for a pico cell 102x.
  • the BSs 110y and 110z may be femto BSs for the femto cells 102y and 102z, respectively.
  • a BS may support one or multiple (e.g., three) cells.
  • Wireless network 100 may be a heterogeneous network that includes BSs of different types, e.g., macro BS, pico BS, femto BS, relays, etc. These different types of BSs may have different transmit power levels, different coverage areas, and different impact on interference in the wireless network 100.
  • macro BS may have a high transmit power level (e.g., 20 Watts) whereas pico BS, femto BS, and relays may have a lower transmit power level (e.g., 1 Watt) .
  • a network controller 130 may couple to a set of BSs and provide coordination and control for these BSs.
  • the network controller 130 may communicate with the BSs 110 via a backhaul.
  • the BSs 110 may also communicate with one another (e.g., directly or indirectly) via wireless or wireline backhaul.
  • MTC machine-type communication
  • eMTC evolved MTC
  • MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., that may communicate with a BS, another device (e.g., remote device) , or some other entity.
  • Certain wireless networks utilize orthogonal frequency division multiplexing (OFDM) on the downlink and single-carrier frequency division multiplexing (SC-FDM) on the uplink.
  • OFDM and SC-FDM partition the system bandwidth into multiple (K) orthogonal subcarriers, which are also commonly referred to as tones, bins, etc.
  • K orthogonal subcarriers
  • Each subcarrier may be modulated with data.
  • modulation symbols are sent in the frequency domain with OFDM and in the time domain with SC-FDM.
  • the spacing between adjacent subcarriers may be fixed, and the total number of subcarriers (K) may be dependent on the system bandwidth.
  • the spacing of the subcarriers may be 15 kHz and the minimum resource allocation (called a “resource block” (RB) ) may be 12 subcarriers (or 180 kHz) . Consequently, the nominal Fast Fourier Transfer (FFT) size may be equal to 128, 256, 512, 1024 or 2048 for system bandwidth of 1.25, 2.5, 5, 10, or 20 megahertz (MHz) , respectively.
  • the system bandwidth may also be partitioned into subbands. For example, a subband may cover 1.08 MHz (i.e., 6 resource blocks) , and there may be 1, 2, 4, 8, or 16 subbands for system bandwidth of 1.25, 2.5, 5, 10 or 20 MHz, respectively.
  • NR may utilize OFDM with a CP on the uplink and downlink and include support for half-duplex operation using TDD. Beamforming may be supported and beam direction may be dynamically configured. MIMO transmissions with precoding may also be supported. MIMO configurations in the DL may support up to 8 transmit antennas with multi-layer DL transmissions up to 8 streams and up to 2 streams per UE. Multi-layer transmissions with up to 2 streams per UE may be supported. Aggregation of multiple cells may be supported with up to 8 serving cells.
  • a scheduling entity e.g., a base station
  • the scheduling entity may be responsible for scheduling, assigning, reconfiguring, and releasing resources for one or more subordinate entities. That is, for scheduled communication, subordinate entities utilize resources allocated by the scheduling entity.
  • Base stations are not the only entities that may function as a scheduling entity.
  • a UE may function as a scheduling entity and may schedule resources for one or more subordinate entities (e.g., one or more other UEs) , and the other UEs may utilize the resources scheduled by the UE for wireless communication.
  • a solid line with double arrows indicates desired transmissions between a UE and a serving BS, which is a BS designated to serve the UE on the downlink and/or uplink.
  • a finely dashed line with double arrows indicates interfering transmissions between a UE and a BS.
  • the TRPs 208 may be a distributed unit (DU) .
  • TRPs 208 may be connected to a single ANC (e.g., ANC 202) or more than one ANC (not illustrated) .
  • a single ANC e.g., ANC 202
  • ANC e.g., ANC 202
  • RaaS radio as a service
  • TRPs 208 may be connected to more than one ANC.
  • TRPs 208 may each include one or more antenna ports.
  • TRPs 208 may be configured to individually (e.g., dynamic selection) or jointly (e.g., joint transmission) serve traffic to a UE.
  • next generation access node (NG-AN) 210 may support dual connectivity with NR and may share a common fronthaul for LTE and NR.
  • NG-AN next generation access node
  • the processor 420 may also generate reference symbols, e.g., for the primary synchronization signal (PSS) , secondary synchronization signal (SSS) , and cell-specific reference signal (CRS) .
  • a transmit (TX) multiple-input multiple-output (MIMO) processor 430 may perform spatial processing (e.g., precoding) on the data symbols, the control symbols, and/or the reference symbols, if applicable, and may provide output symbol streams to the modulators (MODs) 432a through 432t. Each modulator 432 may process a respective output symbol stream (e.g., for OFDM, etc. ) to obtain an output sample stream.
  • Each modulator may further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal.
  • Downlink signals from modulators 432a through 432t may be transmitted via the antennas 434a through 434t, respectively.
  • a transmit processor 464 may receive and process data (e.g., for the physical uplink shared channel (PUSCH) ) from a data source 462 and control information (e.g., for the physical uplink control channel (PUCCH) from the controller/processor 480.
  • the transmit processor 464 may also generate reference symbols for a reference signal (e.g., for the sounding reference signal (SRS) ) .
  • the symbols from the transmit processor 464 may be precoded by a TX MIMO processor 466 if applicable, further processed by the demodulators in transceivers 454a through 454r (e.g., for SC-FDM, etc. ) , and transmitted to the base station 110.
  • data e.g., for the physical uplink shared channel (PUSCH)
  • control information e.g., for the physical uplink control channel (PUCCH) from the controller/processor 480.
  • the transmit processor 464 may also generate reference symbols for a reference signal (e.g., for the
  • FIG. 5 illustrates a diagram 500 showing examples for implementing a communications protocol stack, according to aspects of the present disclosure.
  • the illustrated communications protocol stacks may be implemented by devices operating in a wireless communication system, such as a 5G system (e.g., a system that supports uplink-based mobility) .
  • Diagram 500 illustrates a communications protocol stack including a Radio Resource Control (RRC) layer 510, a Packet Data Convergence Protocol (PDCP) layer 515, a Radio Link Control (RLC) layer 520, a Medium Access Control (MAC) layer 525, and a Physical (PHY) layer 530.
  • RRC Radio Resource Control
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC Medium Access Control
  • PHY Physical
  • Each symbol in a slot may indicate a link direction (e.g., DL, UL, or flexible) for data transmission and the link direction for each subframe may be dynamically switched.
  • the link directions may be based on the slot format.
  • Each slot may include DL/UL data as well as DL/UL control information.
  • channel state information (CSI) reporting may be configured to be performed on a bandwidth portion (BWP) of a larger system bandwidth associated with a non-zero power (NZP) channel state information reference signal (CSI-RS) resource for channel measurement, for example, as illustrated in FIG. 7 and Table 1, below.
  • BWP bandwidth portion
  • NZP non-zero power
  • CSI-RS channel state information reference signal
  • the BWP may range from a size of 24 RBs to 275 RBs.
  • each BWP size range may correspond to two candidate SB sizes (e.g., 4, 8, 16, or 32) .
  • the BWP may start from any RB of the entire system bandwidth and end at any RB of the entire system bandwidth.
  • a first SB only has one RB, (e.g., the RB 3)
  • each of the 2nd to the 18th SBs has 4RBs
  • the last SB i.e., 19th SB
  • the first and last SBs may be considered edge SBs with a number of RBs less than the configured SB size.
  • FIG. 9A illustrates example operations 900A for wireless communications in a network by a user equipment, for example, for channel state information (CSI) reporting without full channel state information reference signal (CSI-RS) presence in a subband.
  • CSI channel state information
  • CSI-RS channel state information reference signal
  • Operations 900A begin at 902A by receiving channel state information (CSI) reporting configuration information configuring the UE to perform CSI measurement and reporting, based on one or more CSI reference signals (CSI-RSs) , in one or more subbands (SBs) of a bandwidth part (BWP) of a system bandwidth.
  • CSI-RSs channel state information
  • SBs subbands
  • BWP bandwidth part
  • the CSI reporting configuration includes an SB size configuration.
  • the UE may receive a CSI-RS resource configuration associated with the CSI reporting configuration.
  • the UE transmits a CSI report corresponding to the first SB if it is determined that the first SB includes a valid CSI-RS presence.
  • FIG. 9B illustrates example operations 900B for wireless communications in a network by a user equipment, for example, for channel state information (CSI) reporting without full channel state information reference signal (CSI-RS) presence in a subband.
  • CSI channel state information
  • CSI-RS channel state information reference signal
  • the number of RBs with CSI-RS with full CSI-RS presence may be equal to a number of RBs in the first SB multiplied by a configured CSI-RS density for the first SB.
  • the first subband may be deemed to have only a partial CSI-RS presence when a gap between a starting RB of CSI-RS resources in the first SB and a starting of the first SB is greater than a gap in a second SB with full CSI-RS presence.
  • the threshold condition may comprise an effective density of CSI-RS resources in the first SB being greater than or equal to a threshold effective density.
  • the threshold effective density may comprise a first threshold value (e.g., . 6) for a first configured CSI-RS density (e.g., 1) and a second threshold value (e.g., .
  • determination of whether the first SB includes a valid CS-RS resource presence may also depend on an RB size of the first SB and a threshold size (e.g., especially for edge SBs as described above) . For example, even if the effective density for the first SB is greater than or equal to the threshold effective density, the UE may determine that the first SB does not include a valid CSI-RS resource presence if the RB size of the first SB is not greater than or equal to the threshold size. For example, assuming the effective density of the first threshold meets or exceeds the threshold effective density, if the RB size of the first SB is equal to 3RBs and the threshold size is equal to 5RBs, the UE may determine that the first SB does not include a valid CSI-RS resource presence.
  • a threshold size e.g., especially for edge SBs as described above
  • the threshold condition may comprise a number RBs without CSI-RS resources in the first SB being less than or equal to a first RB threshold or a number of RBs with CSI-RS resources in the first SB being greater than or equal to a second SB threshold.
  • the first RB threshold (and/or the second RB threshold) may comprise a first threshold value (e.g., 3RBs for a configured SB size of 8RBs) for a first configured CSI-RS density (e.g., 1) and a second threshold value (e.g., 5RBs for a configured SB size of 8RBs) for a second configured CSI-RS density (e.g., . 5) .
  • a first threshold value e.g., 3RBs for a configured SB size of 8RBs
  • a second threshold value e.g., 5RBs for a configured SB size of 8RBs
  • the UE may determine that the first SB includes a valid CSI-RS resource presence.
  • the first threshold value and the second threshold value may be configured by the network or fixed in a standards document.
  • the first threshold value and the second threshold value may be dependent upon the configured SB size (e.g., in RBs) .
  • the first and second threshold values may be lower for a configured SB size of 4RBs as compared to a configured SB size of 8RBs.
  • the first and second threshold values for a configured SB size of 8RBs may be 3RBs and 5RBs, respectively, while the first and second threshold values for a configured SB size of 4RBs may be 1RB and 2RBs, respectively.
  • FIG. 11A illustrates various examples of determining a valid CSI-RS resource presence (e.g., for non-edge SBs) based on a number RBs without CSI-RS resources in the first SB being less than or equal to a first RB threshold, for example, assuming a network-configured SB size of 8RBs.
  • a similar process may be used to determine whether the first SB includes a valid CSI-RS resource presence based on a number of RBs with CSI-RS resources in the first SB being greater than or equal to a second SB threshold.
  • FIG. 11B illustrates various examples of determining a valid CSI-RS resource presence (e.g., for non-edge SBs) based on a number RBs without CSI-RS resources in the first SB being less than or equal to a first RB threshold, for example, assuming a network-configured SB size of 4RBs.
  • a similar process may be used to determine whether the first SB includes a valid CSI-RS resource presence based on a number of RBs with CSI-RS resources in the first SB being greater than or equal to a second SB threshold.
  • determination of whether the first SB includes a valid CS-RS resource presence may also depend on an RB size of the first SB and a threshold size (e.g., especially for edge SBs as described above) . For example, even if the number RBs without CSI-RS resources in the first SB is less than or equal to a first RB threshold or a number of RBs with CSI-RS resources in the first SB is greater than or equal to a second SB threshold, the UE may determine that the first SB does not include a valid CSI-RS resource presence if the RB size of the first SB is not greater than or equal to the threshold size.
  • a threshold size e.g., especially for edge SBs as described above
  • FIG. 11C illustrates examples of determining a valid CSI-RS resource presence (e.g., for edge SBs) based on a number RBs without CSI-RS resources in the first SB being less than or equal to a first RB threshold, for example, assuming a network-configured SB size of 8RBs.
  • a similar process may be used when the network-configured SB size is 4RBs.
  • the threshold condition may comprise a gap between a starting RB of a CSI-RS resource in the first SB and a starting RB of the first SB being less than or equal to a first threshold RB gap or a gap between an ending RB of a CSI-RS resource in the first SB and an ending RB of the first SB being less than or equal to the first threshold RB gap.
  • the first threshold RB gap may be dependent upon the configured SB size (e.g., in RBs) .
  • the threshold RB gaps may be lower for a configured SB size of 4RBs as compared to a configured SB size of 8RBs.
  • the threshold RB gaps for a configured SB size of 8RBs may be 3RBs, while the threshold RB gaps for a configured SB size of 4RBs may be 1RB.
  • FIG. 12A illustrates various examples of determining a valid CSI-RS resource presence (e.g., for non-edge SBs) based on a gap between a starting RB of a CSI-RS resource in the first SB and a starting RB of the first SB being less than or equal to a first threshold RB gap, for example, assuming a network-configured SB size of 8RBs.
  • a similar process may be used to determine whether the first SB includes a valid CSI-RS resource presence based on a gap between an ending RB of a CSI-RS resource in the first SB and an ending RB of the first SB being less than or equal to a second threshold RB gap.
  • FIG. 12B illustrates various examples of determining a valid CSI-RS resource presence (e.g., for non-edge SBs) based on a gap between a starting RB of a CSI-RS resource in the first SB and a starting RB of the first SB being less than or equal to a first threshold RB gap, for example, assuming a network-configured SB size of 4RBs.
  • a similar process may be used to determine whether the first SB includes a valid CSI-RS resource presence based on a gap between an ending RB of a CSI-RS resource in the first SB and an ending RB of the first SB being less than or equal to a second threshold RB gap.
  • determination of whether the first SB includes a valid CS-RS resource presence may also depend on an RB size of the first SB and a threshold size (e.g., especially for edge SBs as described above) . For example, even if the gap between a starting RB of a CSI-RS resource in the first SB and a starting RB of the first SB is less than or equal to a first threshold RB gap or the gap between an ending RB of a CSI-RS resource in the first SB and an ending RB of the first SB is less than or equal to a second threshold RB gap, the UE may determine that the first SB does not include a valid CSI-RS resource presence if the RB size of the first SB is not greater than or equal to the threshold size.
  • a threshold size e.g., especially for edge SBs as described above
  • the UE may determine that the first SB does not include a valid CSI-RS resource presence.
  • the determination of whether the first SB includes a valid CSI-RS resource presence may depend on a type of CSI-RS resource configured in the CSI reporting configuration and a type of CSI-RS resource included in the first SB.
  • the CSI reporting configuration may include one or more non-zero power CSI-RS resources for channel measurement (NZP CMR) .
  • the UE may determine that the first SB includes a valid CSI-RS presence only if the one or more NZP CMR for channel measurement satisfy the one or more threshold conditions described above.
  • the CSI reporting configuration may include one or more NZP CSI-RS resources for channel measurement and one or more CSI-interference measurement (CSI-IM) resources for interference measurement.
  • the UE may determine that the first SB includes a valid CSI-RS presence only if the one or more NZP CMR resources for channel measurement and the one or more CSI-IM resources for interference measurement satisfy the one or more threshold conditions described above.
  • the CSI reporting configuration may include one or more NZP CSI-RS resources for channel measurement (NZP CMR) , one or more CSI-interference measurement (CSI-IM) resources for interference measurement, and one or more NZP CSI-RS resources for interference measurement (NZP IMR) .
  • NZP CMR channel measurement
  • CSI-IM CSI-interference measurement
  • NZP IMR NZP CSI-RS resources for interference measurement
  • the UE may determine that the first SB includes a valid CSI-RS presence if, for when the first SB does not include an NZP CSI-RS for interference measurement, the one or more NZP CMR resources for channel measurement and the one or more CSI-IM resources for interference measurement satisfy the one or more threshold conditions, as described above. Otherwise, if the first SB includes an NZP CSI-RS for interference measurement, the UE may determine that the first SB comprises a valid CSI-RS presence if the one or more NZP CMR resources for channel measurement, the one or more CSI-IM resources for interference measurement, and the one or more NZP CSI-RS resources for interference measurement satisfy the one or more threshold conditions, as described above.
  • taking one or more actions may comprise one of (1) not transmitting the subband CSI for the first SB, (2) transmitting a subband CSI report of the first SB with information that the network would interpret as meaningless (e.g., a “garbage” CSI report) , or (3) treating the determination of a non-valid CSI-RS presence in the first SB as an error case.
  • taking one or more actions comprises one of (1) transmitting a wideband CSI report with only information corresponding to aggregation of one or more SBs with valid CSI-RS presence or (2) transmitting a wideband CSI report with information corresponding to frequency resources spanned by a CSI-RS.
  • FIG. 13 illustrates a communications device 1300 that may include various components (e.g., corresponding to means-plus-function components) configured to perform operations for the techniques disclosed herein, such as the operations illustrated in FIG. 9A.
  • the communications device 1300 includes a processing system 1302 coupled to a transceiver 1308.
  • the transceiver 1308 is configured to transmit and receive signals for the communications device 1300 via an antenna 1310, such as the various signal described herein.
  • the processing system 1302 may be configured to perform processing functions for the communications device 1300, including processing signals received and/or to be transmitted by the communications device 1300.
  • the processing system 1302 includes a processor 1304 coupled to a computer-readable medium/memory 1312 via a bus 1306.
  • the computer-readable medium/memory 1312 is configured to store instructions that when executed by processor 1304, cause the processor 1304 to perform the operations illustrated in FIG. 9A, or other operations for performing the various techniques discussed herein.
  • the processor system 1302 further includes a receiver component 1314 for performing the operations illustrated in FIG. 9A at 902A. Additionally, the processing system 1302 includes a determination component 1316 for performing the operations illustrated in FIG. 9A at 904A. Additionally, the processing system 1302 includes a transmitter component 1318 for performing the operations illustrated in FIG. 9A at 906A.
  • the receiver component 1314, determination component 1316, and the transmitter component 1322 may be coupled to the processor 1304 via bus 1306.
  • the receiver component 1314, determination component 1316, and the transmitter component 1322 may be hardware circuits. In certain aspects, the receiver component 1314, determination component 1316, and the transmitter component 1322 may be software components that are executed and run on processor 1304.
  • FIG. 14 illustrates a communications device 1400 that may include various components (e.g., corresponding to means-plus-function components) configured to perform operations for the techniques disclosed herein, such as the operations illustrated in FIG. 9B.
  • the communications device 1400 includes a processing system 1302 coupled to a transceiver 1408.
  • the transceiver 1408 is configured to transmit and receive signals for the communications device 1400 via an antenna 1410, such as the various signal described herein.
  • the processing system 1402 may be configured to perform processing functions for the communications device 1400, including processing signals received and/or to be transmitted by the communications device 1400.
  • the processing system 1402 includes a processor 1404 coupled to a computer-readable medium/memory 1412 via a bus 1406.
  • the computer-readable medium/memory 1412 is configured to store instructions that when executed by processor 1404, cause the processor 1404 to perform the operations illustrated in FIG. 9B, or other operations for performing the various techniques discussed herein.
  • the processor system 1402 further includes a receiver component 1414 for performing the operations illustrated in FIG. 9B at 908B. Additionally, the processing system 1402 includes a determination component 1416 for performing the operations illustrated in FIG. 9B at 902B and 904B. Additionally, the processing system 1402 includes a transmitter component 1418 for performing the operations illustrated in FIG. 9B at 906B.
  • the receiver component 1414, determination component 1416, and the transmitter component 1422 may be coupled to the processor 1404 via bus 1406.
  • the receiver component 1414, determination component 1416, and the transmitter component 1422 may be hardware circuits. In certain aspects, the receiver component 1414, determination component 1416, and the transmitter component 1422 may be software components that are executed and run on processor 1404.
  • the methods disclosed herein comprise one or more steps or actions for achieving the methods.
  • the method steps and/or actions may be interchanged with one another without departing from the scope of the claims.
  • the order and/or use of specific steps and/or actions may be modified without departing from the scope of the claims.
  • a phrase referring to “at least one of” a list of items refers to any combination of those items, including single members.
  • “at least one of: a, b, or c” is intended to cover a, b, c, a-b, a-c, b-c, and a-b-c, as well as any combination with multiples of the same element (e.g., a-a, a-a-a, a-a-b, a-a-c, a-b-b, a-c-c, b-b, b-b-b, b-b-c, c-c, and c-c-c or any other ordering of a, b, and c) .
  • determining encompasses a wide variety of actions. For example, “determining” may include calculating, computing, processing, deriving, investigating, looking up (e.g., looking up in a table, a database or another data structure) , ascertaining and the like. Also, “determining” may include receiving (e.g., receiving information) , accessing (e.g., accessing data in a memory) and the like. Also, “determining” may include resolving, selecting, choosing, establishing and the like.
  • the various operations of methods described above may be performed by any suitable means capable of performing the corresponding functions.
  • the means may include various hardware and/or software component (s) and/or module (s) , including, but not limited to a circuit, an application specific integrated circuit (ASIC) , or processor.
  • ASIC application specific integrated circuit
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • PLD programmable logic device
  • a general-purpose processor may be a microprocessor, but in the alternative, the processor may be any commercially available processor, controller, microcontroller, or state machine.
  • an example hardware configuration may comprise a processing system in a wireless node.
  • the processing system may be implemented with a bus architecture.
  • the bus may include any number of interconnecting buses and bridges depending on the specific application of the processing system and the overall design constraints.
  • the bus may link together various circuits including a processor, machine-readable media, and a bus interface.
  • the bus interface may be used to connect a network adapter, among other things, to the processing system via the bus.
  • the network adapter may be used to implement the signal processing functions of the PHY layer.
  • a user interface e.g., keypad, display, mouse, joystick, etc.
  • a user interface e.g., keypad, display, mouse, joystick, etc.
  • the functions may be stored or transmitted over as one or more instructions or code on a computer readable medium.
  • Software shall be construed broadly to mean instructions, data, or any combination thereof, whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.
  • Computer-readable media include both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another.
  • the processor may be responsible for managing the bus and general processing, including the execution of software modules stored on the machine-readable storage media.
  • a computer-readable storage medium may be coupled to a processor such that the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor.
  • the machine-readable media may include a transmission line, a carrier wave modulated by data, and/or a computer readable storage medium with instructions stored thereon separate from the wireless node, all of which may be accessed by the processor through the bus interface.
  • the machine-readable media, or any portion thereof may be integrated into the processor, such as the case may be with cache and/or general register files.
  • computer-readable media may comprise non-transitory computer-readable media (e.g., tangible media) .
  • computer-readable media may comprise transitory computer-readable media (e.g., a signal) . Combinations of the above should also be included within the scope of computer-readable media.
  • certain aspects may comprise a computer program product for performing the operations presented herein.
  • a computer program product may comprise a computer-readable medium having instructions stored (and/or encoded) thereon, the instructions being executable by one or more processors to perform the operations described herein.
  • instructions for performing the operations described herein and illustrated in FIGs. 9A-9B may comprise a computer-readable medium having instructions stored (and/or encoded) thereon, the instructions being executable by one or more processors to perform the operations described herein.
  • FIGs. 9A-9B instructions for performing the operations described herein and illustrated in FIGs. 9A-9B.
  • modules and/or other appropriate means for performing the methods and techniques described herein can be downloaded and/or otherwise obtained by a user terminal and/or base station as applicable.
  • a user terminal and/or base station can be coupled to a server to facilitate the transfer of means for performing the methods described herein.
  • various methods described herein can be provided via storage means (e.g., RAM, ROM, a physical storage medium such as a compact disc (CD) or floppy disk, etc. ) , such that a user terminal and/or base station can obtain the various methods upon coupling or providing the storage means to the device.
  • storage means e.g., RAM, ROM, a physical storage medium such as a compact disc (CD) or floppy disk, etc.
  • CD compact disc
  • floppy disk etc.
  • any other suitable technique for providing the methods and techniques described herein to a device can be utilized.

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

Abstract

Selon certains aspects, la présente invention concerne des techniques de signalement de CSI en l'absence d'une présence complète de signaux de référence d'informations d'état de canal (CSI-RS) dans une sous-bande. Un procédé consiste généralement à recevoir des informations de configuration de signalement d'informations d'état de canal (CSI) configurant l'UE de manière à effectuer une mesure et un signalement de CSI, en fonction d'au moins un signal de référence de CSI (CSI-RS), dans au moins une sous-bande (SB) d'une partie de bande passante (BWP) d'une bande passante de système, à déterminer si une première SB de la ou des SB comprend une présence valide de CSI-RS en fonction de si au moins une condition de seuil, impliquant des ressources de CSI-RS comprises dans la première SB, est vérifiée ou non, et à transmettre un signalement de CSI correspondant à la première SB s'il est déterminé que la première SB comprend une présence valide de CSI-RS.
PCT/CN2018/107701 2018-09-26 2018-09-26 Signalement de csi sans introduction complète de présence de csi-rs WO2020061840A1 (fr)

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PCT/CN2019/106600 WO2020063434A1 (fr) 2018-09-26 2019-09-19 Rapport de csi sans présence de csi-rs complète

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