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US-20260129685-A1 - ON-DEMAND SYSTEM INFORMATION REQUEST

US20260129685A1US 20260129685 A1US20260129685 A1US 20260129685A1US-20260129685-A1

Abstract

Various aspects of the present disclosure relate to on-demand system information request. An apparatus, such as a UE, receives, from a serving cell, a configuration that indicates first configuration information for requesting system information block 1 (SIB1) and second configuration information that indicates one or more physical random access channel (PRACH) resources for requesting SIB1 of at least one network energy saving (NES) cell. The UE receives, from the serving cell, information that indicates a synchronization signal block (SSB) subcarrier offset and a physical downlink control channel (PDCCH) configuration for SIB1 acquisition from the at least one NES cell. The UE transmits, to the at least one NES cell, a SIB1 request based at least in part on the first configuration information and a failed SIB1 acquisition.

Inventors

  • Prateek Basu Mallick
  • Alexander Golitschek Edler Von Elbwart
  • Joachim Löhr

Assignees

  • LENOVO (UNITED STATES) INC.

Dates

Publication Date
20260507
Application Date
20241107

Claims (20)

  1. 1 . A user equipment (UE) for wireless communication, comprising: at least one memory; and at least one processor coupled with the at least one memory and configured to cause the UE to: receive, from a serving cell, a configuration that indicates first configuration information for requesting system information block 1 (SIB1) and second configuration information that indicates one or more physical random access channel (PRACH) resources for requesting SIB1 of at least one network energy saving (NES) cell; receive, from the serving cell, information that indicates a synchronization signal block (SSB) subcarrier offset and a physical downlink control channel (PDCCH) configuration for SIB1 acquisition from the at least one NES cell; and transmit, to the at least one NES cell, a SIB1 request based at least in part on the first configuration information and a failed SIB1 acquisition.
  2. 2 . The UE of claim 1 , wherein the at least one processor is configured to cause the UE to camp on the at least one NES cell for service based at least in part on a successful SIB1 acquisition, wherein the NES cell is a subsequent serving cell for the UE.
  3. 3 . The UE of claim 1 , wherein the at least one processor is configured to cause the UE to receive, from the at least one NES cell, an SSB that includes a master information block (MIB) and a physical broadcast channel (PBCH).
  4. 4 . The UE of claim 3 , wherein the SSB subcarrier offset is an integer value that equals a frequency domain offset between an SSB and a resource block grid (RBG) for a number of subcarriers.
  5. 5 . The UE of claim 3 , wherein: based at least in part on the received information that indicates the SSB subcarrier offset and the PDCCH configuration for SIB1 acquisition, and based at least in part on the received SSB from the at least one NES cell indicating the SSB subcarrier offset and the PDCCH configuration for SIB1 acquisition, the at least one processor is configured to cause the UE to: process the information received from the serving cell for SIB1 acquisition from the at least one NES cell.
  6. 6 . The UE of claim 5 , wherein the at least one processor is configured to cause the UE to: monitor for a broadcast SIB1 transmission based at least in part on one or more of the SSB subcarrier offset or the PDCCH configuration for SIB1 acquisition from the at least one NES cell; and determine a failed attempt for SIB1 acquisition based at least in part on the monitoring, wherein the SIB1 request is transmitted based at least in part on the determined failed attempt for SIB1 acquisition.
  7. 7 . The UE of claim 1 , wherein the PDCCH configuration includes at least one or more of a common control resource set (CORESET), a common search space (CSS), or other PDCCH parameters.
  8. 8 . A processor for wireless communication, comprising: at least one controller coupled with at least one memory and configured to cause the processor to: receive, from a serving cell, a configuration that indicates first configuration information for requesting system information block 1 (SIB1) and second configuration information that indicates one or more physical random access channel (PRACH) resources for requesting SIB1 of at least one network energy saving (NES) cell; receive, from the serving cell, information that indicates a synchronization signal block (SSB) subcarrier offset and a physical downlink control channel (PDCCH) configuration for SIB1 acquisition from the at least one NES cell; and transmit, to the at least one NES cell, a SIB1 request based at least in part on the first configuration information and a failed SIB1 acquisition.
  9. 9 . The processor of claim 8 , wherein the at least one controller is configured to cause the processor to camp on the at least one NES cell for service based at least in part on a successful SIB1 acquisition, wherein the NES cell is a subsequent serving cell.
  10. 10 . The processor of claim 8 , wherein the at least one controller is configured to cause the processor to receive, from the at least one NES cell, an SSB that includes a master information block (MIB) and a physical broadcast channel (PBCH).
  11. 11 . The processor of claim 10 , wherein the SSB subcarrier offset is an integer value that equals a frequency domain offset between an SSB and a resource block grid (RBG) for a number of subcarriers.
  12. 12 . The processor of claim 10 , wherein: based at least in part on the received information that indicates the SSB subcarrier offset and the PDCCH configuration for SIB1 acquisition, and based at least in part on the received SSB from the at least one NES cell indicating the SSB subcarrier offset and the PDCCH configuration for SIB1 acquisition, the at least one controller is configured to cause the processor to: process the information received from the serving cell for SIB1 acquisition from the at least one NES cell.
  13. 13 . The processor of claim 12 , wherein the at least one controller is configured to cause the processor to: monitor for a broadcast SIB1 transmission based at least in part on one or more of the SSB subcarrier offset or the PDCCH configuration for SIB1 acquisition from the at least one NES cell; and determine a failed attempt for SIB1 acquisition based at least in part on the monitoring, wherein the SIB1 request is transmitted based at least in part on the determined failed attempt for SIB1 acquisition.
  14. 14 . The processor of claim 8 , wherein the PDCCH configuration includes at least one or more of a common control resource set (CORESET), a common search space (CSS), or other PDCCH parameters.
  15. 15 . A method performed by a user equipment (UE), the method comprising: receiving, from a serving cell, a configuration that indicates first configuration information for requesting system information block 1 (SIB1) and second configuration information that indicates one or more physical random access channel (PRACH) resources for requesting SIB1 of at least one network energy saving (NES) cell; receiving, from the serving cell, information that indicates a synchronization signal block (SSB) subcarrier offset and a physical downlink control channel (PDCCH) configuration for SIB1 acquisition from the at least one NES cell; and transmitting, to the at least one NES cell, a SIB1 request based at least in part on the first configuration information and a failed SIB1 acquisition.
  16. 16 . The method of claim 15 , further comprising camping on the at least one NES cell for service based at least in part on a successful SIB1 acquisition, wherein the NES cell is a subsequent serving cell for the UE.
  17. 17 . The method of claim 15 , further comprising receiving, from the at least one NES cell, an SSB that includes a master information block (MIB) and a physical broadcast channel (PBCH).
  18. 18 . The method of claim 17 , wherein: based at least in part on the received information that indicates the SSB subcarrier offset and the PDCCH configuration for SIB1 acquisition, and based at least in part on the received SSB from the at least one NES cell indicating the SSB subcarrier offset and the PDCCH configuration for SIB1 acquisition, the method further comprising: processing the information received from the serving cell for SIB1 acquisition from the at least one NES cell.
  19. 19 . The method of claim 18 , further comprising: monitoring for a broadcast SIB1 transmission based at least in part on one or more of the SSB subcarrier offset or the PDCCH configuration for SIB1 acquisition from the at least one NES cell; and determining a failed attempt for SIB1 acquisition based at least in part on the monitoring, wherein the SIB1 request is transmitted based at least in part on the determined failed attempt for SIB1 acquisition.
  20. 20 . A network equipment (NE) for wireless communication, comprising: at least one memory; and at least one processor coupled with the at least one memory and configured to cause the NE to: transmit, to a user equipment (UE), a configuration that indicates first configuration information for requesting system information block 1 (SIB1) and second configuration information that indicates one or more physical random access channel (PRACH) resources for requesting a SIB1 of at least one network energy saving (NES) cell; and transmit, to the UE, information that indicates a synchronization signal block (SSB) subcarrier offset and a physical downlink control channel (PDCCH) configuration for SIB1 acquisition from the at least one NES cell, wherein a SIB1 request from the UE to the at least one NES cell is based at least in part on the first configuration information and a failed SIB1 acquisition.

Description

TECHNICAL FIELD The present disclosure relates to wireless communications, and more specifically to an on-demand system information block (SIB) request. BACKGROUND A wireless communications system may include one or multiple network communication devices, which may be otherwise known as a network equipment (NE), supporting wireless communications for one or multiple user communication devices, which may be otherwise known as user equipment (UE), or other suitable terminology. The wireless communications system may support wireless communications with one or multiple user communication devices by utilizing resources of the wireless communication system (e.g., time resources (e.g., symbols, slots, subframes, frames, or the like) or frequency resources (e.g., subcarriers, carriers, or the like). Additionally, the wireless communications system may support wireless communications across various radio access technologies including third generation (3G) radio access technology, fourth generation (4G) radio access technology, fifth generation (5G) radio access technology, among other suitable radio access technologies beyond 5G (e.g., sixth generation (6G)). SUMMARY An article “a” before an element is unrestricted and understood to refer to “at least one” of those elements or “one or more” of those elements. The terms “a,” “at least one,” “one or more,” and “at least one of one or more” may be interchangeable. As used herein, including in the claims, “or” as used in a list of items (e.g., a list of items prefaced by a phrase such as “at least one of” or “one or more of” or “one or both of”) indicates an inclusive list such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Also, as used herein, the phrase “based on” shall not be construed as a reference to a closed set of conditions. For example, an example step that is described as “based on condition A” may be based on both a condition A and a condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase “based on” shall be construed in the same manner as the phrase “based at least in part on”. Further, as used herein, including in the claims, a “set” may include one or more elements. A UE for wireless communication is described. The UE may be configured to, capable of, or operable to perform one or more operations as described herein. For example, the UE may be configured to, capable of, or operable to receive, from a serving cell, a configuration that indicates first configuration information for requesting SIB1 and second configuration information that indicates one or more physical random access channel (PRACH) resources for requesting SIB1 of at least one network energy saving (NES) cell; receive, from the serving cell, information that indicates a synchronization signal block (SSB) subcarrier offset and a physical downlink control channel (PDCCH) configuration for SIB1 acquisition from the at least one NES cell; and transmit, to the at least one NES cell, a SIB1 request based on the first configuration information and a failed SIB1 acquisition. A processor (e.g., a standalone processor chipset, or a component of a UE) for wireless communication is described. The processor may be configured to, capable of, or operable to perform one or more operations as described herein. For example, the processor may be configured to, capable of, or operable to receive, from a serving cell, a configuration that indicates first configuration information for requesting SIB1 and second configuration information that indicates one or more PRACH resources for requesting SIB1 of at least one NES cell; receive, from the serving cell, information that indicates a SSB subcarrier offset and a PDCCH configuration for SIB1 acquisition from the at least one NES cell; and transmit, to the at least one NES cell, a SIB1 request based on the first configuration information and a failed SIB1 acquisition. A method performed or performable by a UE for wireless communication is described. The method may include receiving, from a serving cell, a configuration that indicates first configuration information for requesting SIB1 and second configuration information that indicates one or more PRACH resources for requesting SIB1 of at least one NES cell; receiving, from the serving cell, information that indicates a SSB subcarrier offset and a PDCCH configuration for SIB1 acquisition from the at least one NES cell; and transmitting, to the at least one NES cell, a SIB1 request based on the first configuration information and a failed SIB1 acquisition. Some implementations of the UE, the processor, and the method described herein, the UE, the processor, and the method may further be configured to, capable of, operable to camp on the at least one NES cell for service based on a successful SIB1 acquisition. In some implementations of the UE, the processor, and the method described