# US 12,764,822 B2 · Method for controlling system information delivery > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,764,822 B2 - Document ID: US12764822B2 - Status: Granted - Kind: B2 - Application number: 18/703,306 - Filed: 2022-10-14 - Published: 2024-12-19 - Granted: 2026-10-13 - Earliest claimed: 2021-10-20 - Assignees: Nokia Technologies Oy - Applicants: Nokia Technologies Oy - Inventors: Mads Lauridsen; Jussi-Pekka Koskinen; Jorma Johannes Kaikkonen - Web page: https://patentgrep.com/patent/US12764822B2 ## CPC - H04W 76/27: Transitions between radio resource control [RRC] states - H04W 64/003: {locating network equipment} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A method comprising: providing a user equipment (UE) with one or more restrictions, in addition to a timer, for limiting the UE to send on-demand System Information Block (SIB) requests regarding reference signal configurations for Radio Resource Control (RRC) Idle/Inactive UE mode; receiving an on-demand SIB request regarding reference signal configurations for RRC Idle/Inactive UE from the user equipment; and sending a reference signal configuration SIB to the user equipment. ## Claims ### Claim 1 An apparatus comprising: a processor; a non-transitory computer-readable medium comprising computer-executable instructions that, when executed by the processor, cause the processor to perform the following operations: receiving restrictions limiting the apparatus to send on-demand system information block (SIB) requests regarding tracking reference signal and channel state information reference signal (TRS/CSI-RS) configurations for radio resource control (RRC) Idle or Inactive mode, wherein if all of the restrictions are not fulfilled, the apparatus is prohibited from sending the request for on-demand SIBs regarding TRS/CSI-RS configurations for RRC Idle or Inactive mode, and wherein the restrictions comprise the following: a threshold time for the apparatus to be associated with at least one cell or beam before allowing to send an on-demand SIB request, the threshold time for the apparatus comprising a dynamically changing group of beams to be attached to, the group of beams being used for cell measurement operations, and wherein the threshold time is associated with at least one unchanged beam; a maximum number of cell reselections or beam switches within a predetermined period for being allowed to send the on-demand SIB request; a minimum time for the apparatus estimated to remain associated with the at least one cell or beam; a maximum threshold value for a mobility of the apparatus, wherein the maximum threshold value for the mobility of the apparatus being defined based on a mobility state of the apparatus; a maximum variation in reference signal received power (RSRP) value; receiving a timer that prohibits the apparatus from sending the SIB requests regarding the TRS/CSI-RS configurations for RRC Idle or Inactive mode while the timer is running; storing the restrictions and the timer in the non-transitory computer-readable medium; determining that all of the restrictions are satisfied; based on determining that all of the restrictions are satisfied, sending an on-demand SIB request regarding TRS/CSI-RS configurations for RRC Idle or Inactive mode to a network element; upon sending the SIB request regarding TRS/CSI-RS configurations for RRC Idle or Inactive mode to the network element, starting the timer, upon receiving, from the network element, a reference signal configuration SIB, stopping the timer; and upon stopping the timer, transferring the apparatus from RRC Idle or inactive mode to RRC connected mode. ### Claim 2 (depends on 1) The apparatus according to claim 1, wherein the restrictions further comprise a predetermined location information for the apparatus. ### Claim 3 (depends on 2) The apparatus according to claim 2, wherein the restrictions further comprise a threshold value for a probability of the apparatus being paged. ### Claim 4 (depends on 3) The apparatus according to claim 3, wherein the restrictions further comprise a minimum time for the apparatus having been in RRC Idle or Inactive state or an estimate to remain in RRC Idle or Inactive state. ### Claim 5 (depends on 4) The apparatus according to claim 4, wherein the apparatus is a user equipment. ### Claim 6 (depends on 5) The apparatus according to claim 5, wherein the network element is a base station. ### Claim 7 (depends on 1) The apparatus according to claim 1, wherein the apparatus returns to the RRC idle or inactive mode, and wherein the computer-readable medium further cause the processor to perform the following: determining that all of the restrictions are satisfied; based on determining that all of the restrictions are satisfied, sending a second on-demand SIB request regarding TRS/CSI-RS configurations for RRC Idle or Inactive mode to the network element; upon sending the second SIB request regarding TRS/CSI-RS configurations for RRC Idle or Inactive mode to the network element, starting the timer; determining that the timer has expired; based on the timer expiring, determining that all of the restrictions are satisfied; based on all of the restrictions being satisfied, re-sending the second SIB request regarding TRS/CSI-RS configurations for RRC Idle or Inactive mode to the network element, and re-starting the timer upon receiving, from the network element, a reference signal configuration SIB, stopping the timer; and upon stopping the timer, transferring the apparatus from RRC Idle or inactive mode to RRC connected mode. ### Claim 8 A system comprising: a network element; a user equipment comprising: a processor; and a non-transitory computer-readable medium comprising computer-executable instructions that, when executed by the processor, cause the processor to perform the following operations: receiving restrictions limiting the user equipment to send on-demand system information block (SIB) requests regarding tracking reference signal and channel state information reference signal (TRS/CSI-RS) configurations for radio resource control (RRC) Idle or Inactive mode, wherein if all of the restrictions are not fulfilled, the user equipment is prohibited from sending the request for on-demand SIBs regarding TRS/CSI-RS configurations for RRC Idle or Inactive mode, and wherein the restrictions comprise the following: a threshold time for the user equipment to be associated with at least one cell or beam before allowing to send an on-demand SIB request, the threshold time for the user equipment comprising a dynamically changing group of beams to be attached to, the group of beams being used for cell measurement operations, and wherein the threshold time is associated with at least one unchanged beam; a maximum number of cell reselections or beam switches within a predetermined period for being allowed to send the on-demand SIB request; a minimum time for the user equipment estimated to remain associated with the at least one cell or beam; a maximum threshold value for a mobility of the user equipment, wherein the maximum threshold value for the mobility of the user equipment being defined based on a mobility state of the user equipment; a maximum variation in reference signal received power (RSRP) value; receiving a timer that prohibits the user equipment from sending the SIB requests regarding the TRS/CSI-RS configurations for RRC Idle or Inactive mode while the timer is running; storing the restrictions and the timer in the non-transitory computer-readable medium; determining that all of the restrictions are satisfied; based on determining that all of the restrictions are satisfied, sending an on-demand SIB request regarding TRS/CSI-RS configurations for RRC Idle or Inactive mode to a network element; upon sending the SIB request regarding TRS/CSI-RS configurations for RRC Idle or Inactive mode to the network element, starting the timer, upon receiving, from the network element, a reference signal configuration SIB, stopping the timer; and upon stopping the timer, transferring the user equipment from RRC Idle or inactive mode to RRC connected mode. ### Claim 9 (depends on 8) The system according to claim 8, wherein the restrictions further comprise a predetermined location information for the user equipment. ### Claim 10 (depends on 9) The system according to claim 9, wherein the restrictions further comprise a threshold value for a probability of the user equipment being paged. ### Claim 11 (depends on 10) The system according to claim 10, wherein the restrictions further comprise a minimum time for the user equipment having been in RRC Idle or Inactive state or an estimate to remain in RRC Idle or Inactive state. ### Claim 12 (depends on 11) The system according to claim 11, wherein the user equipment is a user equipment. ### Claim 13 (depends on 12) The system according to claim 12, wherein the network element is a base station. ### Claim 14 (depends on 13) The system according to claim 13, wherein the user equipment returns to the RRC idle or inactive mode, and wherein the computer-readable medium further cause the processor to perform the following: determining that all of the restrictions are satisfied; based on determining that all of the restrictions are satisfied, sending a second on-demand SIB request regarding TRS/CSI-RS configurations for RRC Idle or Inactive mode to the network element; upon sending the second SIB request regarding TRS/CSI-RS configurations for RRC Idle or Inactive mode to the network element, starting the timer; determining that the timer has expired; based on the timer expiring, determining that all of the restrictions are satisfied; based on all of the restrictions being satisfied, re-sending the second SIB request regarding TRS/CSI-RS configurations for RRC Idle or Inactive mode to the network element, and re-starting the timer upon receiving, from the network element, a reference signal configuration SIB, stopping the timer; and upon stopping the timer, transferring the user equipment from RRC Idle or inactive mode to RRC connected mode. ### Claim 15 A method comprising: receiving restrictions limiting a user equipment to send on-demand system information block (SIB) requests regarding tracking reference signal and channel state information reference signal (TRS/CSI-RS) configurations for radio resource control (RRC) Idle or Inactive mode, wherein if all of the restrictions are not fulfilled, the user equipment is prohibited from sending the request for on-demand SIBs regarding TRS/CSI-RS configurations for RRC Idle or Inactive mode, and wherein the restrictions comprise the following: a threshold time for the user equipment to be associated with at least one cell or beam before allowing to send an on-demand SIB request, the threshold time for the user equipment comprising a dynamically changing group of beams to be attached to, the group of beams being used for cell measurement operations, and wherein the threshold time is associated with at least one unchanged beam; a maximum number of cell reselections or beam switches within a predetermined period for being allowed to send the on-demand SIB request; a minimum time for the user equipment estimated to remain associated with the at least one cell or beam; a maximum threshold value for a mobility of the user equipment, wherein the maximum threshold value for the mobility of the user equipment being defined based on a mobility state of the user equipment; a maximum variation in reference signal received power (RSRP) value; receiving a timer that prohibits the user equipment from sending the SIB requests regarding the TRS/CSI-RS configurations for RRC Idle or Inactive mode while the timer is running; storing the restrictions and the timer; determining that all of the restrictions are satisfied; based on determining that all of the restrictions are satisfied, sending an on-demand SIB request regarding TRS/CSI-RS configurations for RRC Idle or Inactive mode to a network element; upon sending the SIB request regarding TRS/CSI-RS configurations for RRC Idle or Inactive mode to the network element, starting the timer, upon receiving, from the network element, a reference signal configuration SIB, stopping the timer; and upon stopping the timer, transferring the user equipment from RRC Idle or inactive mode to RRC connected mode. ### Claim 16 (depends on 15) The method according to claim 15, wherein the restrictions further comprise a predetermined location information for the user equipment. ### Claim 17 (depends on 16) The method according to claim 16, wherein the restrictions further comprise a threshold value for a probability of the user equipment being paged. ### Claim 18 (depends on 17) The method according to claim 17, wherein the restrictions further comprise a minimum time for the user equipment having been in RRC Idle or Inactive state or an estimate to remain in RRC Idle or Inactive state. ### Claim 19 (depends on 18) The method according to claim 18, wherein the user equipment is a user equipment, and wherein the network element is a base station. ### Claim 20 (depends on 19) The method according to claim 19, wherein the user equipment returns to the RRC idle or inactive mode, and wherein the method further comprises: determining that all of the restrictions are satisfied; based on determining that all of the restrictions are satisfied, sending a second on-demand SIB request regarding TRS/CSI-RS configurations for RRC Idle or Inactive mode to the network element; upon sending the second SIB request regarding TRS/CSI-RS configurations for RRC Idle or Inactive mode to the network element, starting the timer; determining that the timer has expired; based on the timer expiring, determining that all of the restrictions are satisfied; based on all of the restrictions being satisfied, re-sending the second SIB request regarding TRS/CSI-RS configurations for RRC Idle or Inactive mode to the network element, and re-starting the timer upon receiving, from the network element, a reference signal configuration SIB, stopping the timer; and upon stopping the timer, transferring the user equipment from RRC Idle or inactive mode to RRC connected mode.