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EP-4738722-A1 - BEAM MANAGEMENT IN EVENT TRIGGERED REPORTING

EP4738722A1EP 4738722 A1EP4738722 A1EP 4738722A1EP-4738722-A1

Abstract

A wireless device receives one or more radio resource control (RRC) messages comprising one or more configuration parameters of a cell, where the one or more configuration parameters comprise a first parameter indicating a TCI state, among a first TCI state and a second TCI state, to apply to a first set of reference signals for channel state information (CSI) reporting triggered by the wireless device. The wireless device receives a control command indicating the first TCI state and the second TCI state. The wireless device triggers a CSI report based on a first radio link quality of at least one reference signal in the first set of reference signals being higher, by a threshold value, than a second radio link quality of a reference signal indicated by the TCI state indicated by the first parameter.

Inventors

  • CIRIK, Ali Cagatay
  • Dinan, Esmael Hejazi

Assignees

  • Ofinno, LLC
  • Cirik, Ali Cagatay
  • Dinan, Esmael Hejazi

Dates

Publication Date
20260506
Application Date
20251103

Claims (15)

  1. A method comprising: receiving, by a wireless device, one or more radio resource control (RRC) messages comprising one or more configuration parameters, wherein the one or more configuration parameters comprise a first parameter indicating a transmission configuration indicator (TCI) state, among a first TCI state and a second TCI state, to use for channel state information (CSI) reporting initiated by the wireless device; receiving a control command indicating the first TCI state and the second TCI state; and transmitting a CSI report based on a first radio link quality of at least one reference signal in a first set of reference signals being greater, by a threshold value, than a second radio link quality of a reference signal indicated by the TCI state indicated by the first parameter.
  2. The method of claim 1, wherein the CSI report indicates the at least one reference signal.
  3. The method of any of claims 1-2, wherein the one or more configuration parameters indicate a list of TCI states comprising the first TCI state and the second TCI state.
  4. The method of any of claims 1-3, wherein the one or more configuration parameters comprise one or more first CSI reporting configuration parameters, of a first CSI report configuration, the one or more first CSI reporting configuration parameters comprising: a first CSI resource parameter indicating the first set of reference signals; and the first parameter.
  5. The method of claim 4, wherein the one or more first CSI reporting configuration parameters further comprise: an event type parameter indicating an event type for the CSI reporting initiated by the wireless device; and a threshold parameter indicating the threshold value.
  6. The method of any of claims 1-5, wherein the reference signal indicated by the TCI state indicated by the first parameter comprises: a CSI reference signal (CSI-RS), wherein the CSI-RS indicated by the TCI state is a quasi co-location reference signal in the TCI state; or a synchronization signal block (SSB), wherein the SSB indicated by the TCI state is quasi co-located with a quasi co-location reference signal in the TCI state.
  7. The method of any of claims 1-6, further comprising: transmitting a physical uplink control channel (PUCCH) transmission requesting an uplink resource to transmit the CSI report; and receiving a downlink control information (DCI) indicating the uplink resource, wherein the transmitting of the CSI report is via the uplink resource; or transmitting a PUCCH transmission notifying transmission of the CSI report via an uplink resource, wherein the transmitting the CSI report is after the PUCCH transmission.
  8. A method comprising: transmitting, by a base station to a wireless device, one or more radio resource control (RRC) messages comprising one or more configuration parameters, wherein the one or more configuration parameters comprise a first parameter indicating a transmission configuration indicator (TCI state), among a first TCI state and a second TCI state, for the wireless device to use for channel state information (CSI) reporting initiated by the wireless device; transmitting, to the wireless device, a control command indicating the first TCI state and the second TCI state; and receiving, by the wireless device, a CSI report, wherein the CSI report is initiated by the wireless device based on a first radio link quality of at least one reference signal in a first set of reference signals being higher, by a threshold value, than a second radio link quality of a reference signal indicated by the TCI state indicated by the first parameter.
  9. The method of claim 8, wherein the CSI report indicates the at least one reference signal.
  10. The method of any of claims 8-9, wherein the one or more configuration parameters indicate a list of TCI states comprising the first TCI state and the second TCI state.
  11. The method of any of claims 8-10, wherein the one or more configuration parameters comprise one or more first CSI reporting configuration parameters, of a first CSI report configuration, the one or more first CSI reporting configuration parameters comprising: a first CSI resource parameter indicating the first set of reference signals; and the first parameter.
  12. The method of claim 11, wherein the one or more first CSI reporting configuration parameters further comprise: an event type parameter indicating an event type for the CSI reporting initiated by the wireless device; and a threshold parameter indicating the threshold value.
  13. The method of any of claims 8-12, further comprising: receiving, from the wireless device, a physical uplink control channel (PUCCH) transmission requesting an uplink resource to transmit the CSI report; and transmitting, to the wireless device, a downlink control information (DCI) indicating the uplink resource, wherein the receiving of the CSI report is via the uplink resource; or receiving, from the wireless device, a physical uplink control channel (PUCCH) transmission notifying transmission of the CSI report via an uplink resource, wherein the receiving the CSI report is after the PUCCH transmission.
  14. An apparatus comprising: one or more processors; and memory storing instructions that, when executed by the one or more processors, cause the apparatus to perform the method of any one of claims 1 to 13.
  15. A non-transitory computer-readable medium comprising instructions that, when executed by one or more processors of an apparatus, cause the apparatus to perform the method of any one of claims 1 to 13.

Description

BRIEF DESCRIPTION OF THE DRAWINGS Examples of several of the various embodiments of the present disclosure are described herein with reference to the drawings. FIG. 1A and FIG. 1B illustrate example mobile communication networks in which embodiments of the present disclosure may be implemented.FIG. 2A and FIG. 2B respectively illustrate a New Radio (NR) user plane and control plane protocol stack.FIG. 3 illustrates an example of services provided between protocol layers of the NR user plane protocol stack of FIG. 2A.FIG. 4A illustrates an example downlink data flow through the NR user plane protocol stack of FIG. 2A.FIG. 4B illustrates an example format of a MAC subheader in a MAC PDU.FIG. 5A and FIG. 5B respectively illustrate a mapping between logical channels, transport channels, and physical channels for the downlink and uplink.FIG. 6 is an example diagram showing RRC state transitions of a UE.FIG. 7 illustrates an example configuration of an NR frame into which OFDM symbols are grouped.FIG. 8 illustrates an example configuration of a slot in the time and frequency domain for an NR carrier.FIG. 9 illustrates an example of bandwidth adaptation using three configured BWPs for an NR carrier.FIG. 10A illustrates three carrier aggregation configurations with two component carriers.FIG. 10B illustrates an example of how aggregated cells may be configured into one or more PUCCH groups.FIG. 11A illustrates an example of an SS/PBCH block structure and location.FIG. 11B illustrates an example of CSI-RSs that are mapped in the time and frequency domains.FIG. 12A and FIG. 12B respectively illustrate examples of three downlink and uplink beam management procedures.FIG. 13A, FIG. 13B, and FIG. 13C respectively illustrate a four-step contention-based random-access procedure, a two-step contention-free random-access procedure, and another two-step random-access procedure.FIG. 14A illustrates an example of CORESET configurations for a bandwidth part.FIG. 14B illustrates an example of a CCE-to-REG mapping for DCI transmission on a CORESET and PDCCH processing.FIG. 15 illustrates an example of a wireless device in communication with a base station.FIG. 16A, FIG. 16B, FIG. 16C, and FIG. 16D illustrate example structures for uplink and downlink transmission.FIG. 17 illustrates a procedure that may be used to enable uplink transmission using a TCI state.FIGs. 18A and 18B are signal flow diagrams illustrating aspects of transmission configuration indicator (TCI) state indication according to the present disclosure.FIGs. 19A, 19B, and 19C are signal flow diagrams illustrating aspects of channel state information (CSI) reporting, triggered by the network, according to the present disclosure.FIGs. 20A, 20B, and 20C are signal flow diagrams illustrating aspects of CSI reporting, triggered by a wireless device, according to the present disclosure.FIG. 21 shows an example that illustrates a procedure according to the first mode/option for user equipment (UE)-initiated beam reporting (UEIBR).FIG. 22 shows an example that illustrates a procedure according to a second mode/option for UEIBR.FIG. 23 illustrates an example procedure which may be used by a wireless device to trigger a UE-initiated beam report.FIG. 24 illustrates an example medium access control (MAC) control element (CE).FIG. 25 illustrates activation of transmission configuration indicator (TCI) states via a MAC CE and indication of TCI states via downlink control information (DCI).FIG. 26 illustrates an example procedure which may be used by a wireless device to trigger a UE-initiated beam report.FIG. 27 illustrates an example procedure which may be used by a wireless device to trigger a UE-initiated beam report according to an embodiment.FIG. 28 illustrates an existing UE-initiated beam/CSI report.FIG. 29 illustrates an example UE-initiated beam/CSI report format according to an embodiment.FIG. 30 illustrates an example process according to an embodiment.FIG. 31 illustrates another example process according to an embodiment. DETAILED DESCRIPTION In the present disclosure, various embodiments are presented as examples of how the disclosed techniques may be implemented and/or how the disclosed techniques may be practiced in environments and scenarios. It will be apparent to persons skilled in the relevant art that various changes in form and detail can be made therein without departing from the scope. In fact, after reading the description, it will be apparent to one skilled in the relevant art how to implement alternative embodiments. The present embodiments should not be limited by any of the described exemplary embodiments. The embodiments of the present disclosure will be described with reference to the accompanying drawings. Limitations, features, and/or elements from the disclosed example embodiments may be combined to create further embodiments within the scope of the disclosure. Any figures which highlight the functionality and advantages are presented for exampl