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US-12621760-B2 - Network controlled repeater

US12621760B2US 12621760 B2US12621760 B2US 12621760B2US-12621760-B2

Abstract

An NCR may receive, from a base station, a SIB message comprising an IE indicating that a cell supports an NCR. An NCR may be an RF repeater for amplifying and forwarding of signals between a wireless device and a base station based on side control information received by the NCR from the base station. The NCR may select the cell based on the SIB message comprising the IE indicating that the cell supports an NCR.

Inventors

  • Alireza Babaei

Assignees

  • Alireza Babaei

Dates

Publication Date
20260505
Application Date
20230704

Claims (20)

  1. 1 . A method comprising: receiving, by a network controlled repeater (NCR) from a base station, a system information block (SIB) message comprising: an information element (IE) indicating that a cell supports an NCR; first random access parameters associated with NCRs; and second random access parameters associated with wireless devices that are not NCRs; wherein: an NCR is a radio frequency (RF) repeater comprising a first entity and a first function; the first entity of the NCR is associated with receiving side control information from the base station via a control link between the first entity and the base station; and the first function of the NCR is associated with amplifying and forwarding of signals between a wireless device and the base station based on the side control information; selecting the cell based on the IE indicating that the cell supports an NCR; and initiating a random access process via the cell based on the first random access parameters and in response to the cell supporting the NCR.
  2. 2 . The method of claim 1 , wherein the forwarding is based on: an access link between the wireless device and the first function of the NCR; and a backhaul link between the first function of the NCR and the base station.
  3. 3 . The method of claim 1 , wherein the random access process is based on the first random access parameters based on being initiated by an NCR.
  4. 4 . The method of claim 1 , wherein the behavior of the first function is controlled according to the side control information.
  5. 5 . The method of claim 1 , wherein the NCR is in a radio resource control (RRC) idle state.
  6. 6 . The method of claim 1 , wherein the NCR is in a radio resource control (RRC) inactive state.
  7. 7 . The method of claim 1 , further comprising performing measurements associated with the cell.
  8. 8 . A network controlled repeater (NCR) comprising: one or more processors; and memory storing instructions that, when executed by the one or more processors, cause the NCR to: receive, from a base station, a system information block (SIB) message comprising: an information element (IE) indicating that that a cell supports an NCR; first random access parameters associated with NCRs; and second random access parameters associated with wireless devices that are not NCRs; wherein: an NCR is a radio frequency (RF) repeater comprising a first entity and a first function; the first entity of the NCR is associated with receiving side control information from the base station via a control link between the first entity and the base station; and the first function of the NCR is associated with amplifying and forwarding of signals between a wireless device and the base station based on the side control information; select the cell based on the IE indicating that the cell supports an NCR and initiate a random access process via the cell based on the first random access parameters and in response to the cell supporting the NCR.
  9. 9 . The NCR of claim 8 , wherein the forwarding is based on: an access link between the wireless device and the first function of the NCR; and a backhaul link between the first function of the NCR and the base station.
  10. 10 . The NCR of claim 8 , wherein the random access process is based on the first random access parameters based on being initiated by an NCR.
  11. 11 . The NCR of claim 8 , wherein the behavior of the first function is controlled according to the side control information.
  12. 12 . The NCR of claim 8 , wherein the NCR is in a radio resource control (RRC) idle state.
  13. 13 . The NCR of claim 8 , wherein the NCR is in a radio resource control (RRC) inactive state.
  14. 14 . The NCR of claim 8 , wherein the instructions, when executed by the one or more processors, cause the NCR to perform measurements associated with the cell.
  15. 15 . A system comprising: a base station; and a network controlled repeater (NCR) comprising: one or more processors; and memory storing instructions that, when executed by the one or more processors, cause the NCR to: receive, from the base station, a system information block (SIB) message comprising: an information element (IE) indicating that a cell supports an NCR; first random access parameters associated with NCRs; and second random access parameters associated with wireless devices that are not NCRs; wherein: an NCR is a radio frequency (RF) repeater comprising a first entity and a first function; the first entity of the NCR is associated with receiving side control information from the base station via a control link between the first entity and the base station; and; and the first function of the NCR is associated with amplifying and forwarding of signals between a wireless device and the base station based on the side control information; select the cell based on the IE indicating that the cell supports an NCR and initiate a random access process via the cell based on the first random access parameters and in response to the cell supporting the NCR.
  16. 16 . The system of claim 15 , wherein the forwarding is based on: an access link between the wireless device and the first function of the NCR; and a backhaul link between the first function of the NCR and the base station.
  17. 17 . The system of claim 15 , wherein the random access process is based on the first random access parameters based on being initiated by an NCR.
  18. 18 . The system of claim 15 , wherein the behavior of the first function is controlled according to the side control information.
  19. 19 . The system of claim 15 , wherein the NCR is in a radio resource control (RRC) idle state.
  20. 20 . The system of claim 15 , wherein the NCR is in a radio resource control (RRC) inactive state.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application claims the benefit of U.S. Provisional Application No. 63/358,201, filed Jul. 4, 2022, which is hereby incorporated by reference in its entirety. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1A and FIG. 1B show examples of mobile communications systems in accordance with several of various embodiments of the present disclosure. FIG. 2A and FIG. 2B show examples of user plane and control plane protocol layers in accordance with several of various embodiments of the present disclosure. FIG. 3 shows example functions and services offered by protocol layers in a user plane protocol stack in accordance with several of various embodiments of the present disclosure. FIG. 4 shows example flow of packets through the protocol layers in accordance with several of various embodiments of the present disclosure. FIG. 5A shows example mapping of channels between layers of the protocol stack and different physical signals in downlink in accordance with several of various embodiments of the present disclosure. FIG. 5B shows example mapping of channels between layers of the protocol stack and different physical signals in uplink in accordance with several of various embodiments of the present disclosure. FIG. 6 shows example physical layer processes for signal transmission in accordance with several of various embodiments of the present disclosure. FIG. 7 shows examples of RRC states and RRC state transitions in accordance with several of various embodiments of the present disclosure. FIG. 8 shows an example time domain transmission structure in NR by grouping OFDM symbols into slots, subframes and frames in accordance with several of various embodiments of the present disclosure. FIG. 9 shows an example of time-frequency resource grid in accordance with several of various embodiments of the present disclosure. FIG. 10 shows example adaptation and switching of bandwidth parts in accordance with several of various embodiments of the present disclosure. FIG. 11A shows example arrangements of carriers in carrier aggregation in accordance with several of various embodiments of the present disclosure. FIG. 11B shows examples of uplink control channel groups in accordance with several of various embodiments of the present disclosure. FIG. 12A, FIG. 12B and FIG. 12C show example random access processes in accordance with several of various embodiments of the present disclosure. FIG. 13A shows example time and frequency structure of SSBs and their associations with beams in accordance with several of various embodiments of the present disclosure. FIG. 13B shows example time and frequency structure of CSI-RSs and their association with beams in accordance with several of various embodiments of the present disclosure. FIG. 14A, FIG. 14B and FIG. 14C show example beam management processes in accordance with several of various embodiments of the present disclosure. FIG. 15 shows example components of a wireless device and a base station that are in communication via an air interface in accordance with several of various embodiments of the present disclosure. FIG. 16A shows an example user plane protocol stack on the Xn interface in accordance with several of various embodiments of the present disclosure. FIG. 16B shows an example control plane protocol stack of the Xn interface in accordance with several of various embodiments of the present disclosure. FIG. 17 shows example components of an inter-gNB handover procedure in accordance with several of various embodiments of the present disclosure. FIG. 18 shows an example Handover scenario in accordance with several of various embodiments of the present disclosure. FIG. 19 shows an example measurement process in accordance with several of various embodiments of the present disclosure. FIG. 20 shows a Handover preparation procedure in accordance with several of various embodiments of the present disclosure. FIG. 21 shows example signaling for unsuccessful Handover preparation in accordance with several of various embodiments of the present disclosure. FIG. 22 shows an example Handover cancel procedure in accordance with several of various embodiments of the present disclosure. FIG. 23 shows an example S-NG-RAN node addition preparation procedure in accordance with several of various embodiments of the present disclosure. FIG. 24 shows example signaling for unsuccessful S-NG-RAN node addition in accordance with several of various embodiments of the present disclosure. FIG. 25 shows an example Xn Setup procedure in accordance with several of various embodiments of the present disclosure. FIG. 26 shows an example model of a network controlled repeater (NCR) in accordance with several of various embodiments of the present disclosure. FIG. 27 shows an example process in accordance with several of various embodiments of the present disclosure. FIG. 28 shows an example process in accordance with several of various embodiments of the present discl