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US-20260129493-A1 - Beam Management in Event Triggered Reporting

US20260129493A1US 20260129493 A1US20260129493 A1US 20260129493A1US-20260129493-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

  • Ali Cagatay Cirik
  • Esmael Hejazi Dinan

Assignees

  • OFINNO, LLC

Dates

Publication Date
20260507
Application Date
20251031

Claims (20)

  1. 1 . A wireless device comprising: one or more processors; and memory storing instructions that, when executed by the one or more processors, cause the wireless device to: receive 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; receive 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. 2 . The wireless device of claim 1 , wherein the CSI report indicates the at least one reference signal.
  3. 3 . The wireless device of claim 1 , wherein the one or more configuration parameters indicate a list of TCI states comprising the first TCI state and the second TCI state.
  4. 4 . The wireless device of claim 1 , 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. 5 . The wireless device 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. 6 . The wireless device of claim 1 , 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 a quasi co-location reference signal in the TCI state.
  7. 7 . The wireless device of claim 1 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to: transmit a physical uplink control channel (PUCCH) transmission requesting an uplink resource to transmit the CSI report; and receive a downlink control information (DCI) indicating the uplink resource, wherein the transmitting of the CSI report is via the uplink resource; or transmit a physical uplink control channel (PUCCH) transmission notifying transmission of the CSI report via an uplink resource, wherein the transmitting the CSI report is after the PUCCH transmission.
  8. 8 . A base station comprising: one or more processors; and memory storing instructions that, when executed by the one or more processors, cause the base station to: transmit, 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; transmit, to the wireless device, a control command indicating the first TCI state and the second TCI state; and receive, from 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. 9 . The base station of claim 8 , wherein the CSI report indicates the at least one reference signal.
  10. 10 . The base station of claim 8 , wherein the one or more configuration parameters indicate a list of TCI states comprising the first TCI state and the second TCI state.
  11. 11 . The base station of claim 8 , 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. 12 . The base station 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. 13 . The base station of claim 8 , wherein the instructions, when executed by the one or more processors, further cause the base station to: receive, from the wireless device, a physical uplink control channel (PUCCH) transmission requesting an uplink resource to transmit the CSI report; and transmit, to the wireless device, a downlink control information (DCI) indicating the uplink resource; or receive, 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. 14 . A non-transitory computer-readable medium comprising instructions that, when executed by one or more processors of a wireless device, cause the wireless device to: receive 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; receive a control command indicating the first TCI state and the second TCI state; and transmit a CSI report 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.
  15. 15 . The non-transitory computer-readable medium of claim 14 , wherein the CSI report indicates the at least one reference signal.
  16. 16 . A wireless device comprising: one or more processors; and memory storing instructions that, when executed by the one or more processors, cause the wireless device to: receiving, by a wireless device, one or more radio resource control (RRC) messages comprising channel state information (CSI) report configuration parameters for user-equipment (UE)-initiated CSI reporting, wherein the CSI report configuration parameters comprise: a CSI resource parameter indicating a set of reference signals; an even instance count indicating a minimum number of event instances for which the wireless device triggers a UE-initiated CSI report for a reference signal of the set of reference signals; a transmission configuration indication (TCI) parameter indicating a serving cell on which an indicated TCI state is applied, wherein the indicated TCI state is used to determine a first reference signal associated with a current beam; and a threshold for radio link quality; incrementing a counter based on determining an event instance for a second reference signal among the set of reference signals, wherein the event instance is determined based on a second radio link quality of the second reference signal being greater, by at least the threshold, than a first radio link quality of the first reference signal associated with the indicated TCI state of the serving cell; based on a number of event instances determined by the counter for the second reference signal being greater than or equal to the event instance count, transmitting a physical uplink control channel (PUCCH) transmission for the UE-initiated CSI reporting; and transmitting, after the PUCCH transmission, a CSI report in a physical uplink shared channel (PUSCH), wherein the CSI report indicates the second reference signal.
  17. 17 . The wireless device of claim 16 wherein the instructions, when executed by the one or more processors, further cause the wireless device to: receive a downlink control information (DCI) indicating the TCI state for the serving cell; and apply the TCI state to downlink receptions via the serving cell.
  18. 18 . The wireless device of claim 16 , wherein the CSI report configuration parameters indicate an event detection time window length parameter indicating a time window for triggering event determination.
  19. 19 . The wireless device of claim 18 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to start the time window based on determining the event instance.
  20. 20 . The wireless device of claim 18 , wherein a trigger-event is detected based on the number of event instances within the time window being greater than or equal to the event instance count.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application claims the benefit of U.S. Provisional Application No. 63/716,294, filed Nov. 5, 2024, which is hereby incorporated by reference in its entirety. 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. Limitati