Granted Patent B2

US 12,581,393 · App. 17/764,517 · Granted Mar 17, 2026

Inventors: Hyung-Nam Choi (Ottobrunn, DE); Joachim Loehr (Wiesbaden, DE); Prateek Basu Mallick (Dreieich, DE)

Assignee: Lenovo (Singapore) Pte. Ltd.

H04W48/14H04W48/10

Abstract

Claims (26)

1 . A method at a user equipment (UE), the method comprising:

receiving, from a base station, configuration information corresponding to on-demand system information (SI), wherein the configuration information is received in a first radio resource control (RRC) configuration message during an RRC connected state, wherein the configuration information comprises a flag that explicitly indicates whether dedicated on-demand SI is enabled during the RRC connected state, wherein the on-demand SI comprises one or more system information blocks (SIBs);

transmitting, to the base station, a dedicated message requesting one or more on-demand SIBs based on the dedicated on-demand SI being enabled; and

receiving, from the base station, the requested one or more on-demand SIBs in a second RRC configuration message.

2 . The method of claim 1 , wherein the second RRC configuration message comprises a transmission flag that indicates whether all or part of the system information blocks requested in the request message for on-demand system information blocks are to be transmitted in a broadcast manner.

3 . The method of claim 1 , wherein the second RRC configuration message comprises a change flag that indicates whether system information scheduling information has changed.

4 . The method of claim 1 , wherein the second RRC configuration message comprises scheduling information for system information blocks requested in the request message for on-demand system information blocks.

5 . The method of claim 1 , wherein the second RRC configuration message comprises a status flag indicating whether system information blocks requested in the request message for on-demand system information blocks are transmitted in a plurality of response messages.

6 . The method of claim 1 , further comprising retransmitting the request message for on-demand system information blocks as a result of not receiving at least one requested system information block in the second RRC configuration message or in a broadcast manner.

7 . A user equipment (UE), 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 base station, configuration information corresponding to on-demand system information (SI), wherein the configuration information is received in a first radio resource control (RRC) configuration message during an RRC connected state, wherein the configuration information comprises a flag that explicitly indicates whether dedicated on-demand SI is enabled during the RRC connected state, wherein the on-demand SI comprises one or more system information blocks (SIBs);

transmit, to the base station, a dedicated message requesting one or more on-demand SIBs based on the dedicated on-demand SI being enabled; and

receive, from the base station, the requested one or more on-demand SIBs in a second RRC configuration message.

8 . The UE of claim 7 , wherein the second RRC configuration message comprises a transmission flag that indicates whether all or part of the system information blocks requested in the request message for on-demand system information blocks are to be transmitted in a broadcast manner.

9 . The UE of claim 7 , wherein the second RRC configuration message comprises a change flag that indicates whether system information scheduling information has changed.

10 . The UE of claim 7 , wherein the second RRC configuration message comprises scheduling information for system information blocks requested in the request message for on-demand system information blocks.

11 . The UE of claim 7 , wherein the second RRC configuration message comprises a status flag indicating whether system information blocks requested in the request message for on-demand system information blocks are transmitted in a plurality of response messages.

12 . The UE of claim 7 , wherein the at least one processor is configured to cause the UE to retransmit the request message for on-demand system information blocks as a result of not receiving at least one requested system information block in the second RRC configuration message or in a broadcast manner.

13 . A base station, comprising:

at least one memory; and

at least one processor coupled with the at least one memory and configured to cause the base station to:

transmit, to a user equipment (UE), configuration information corresponding to on-demand system information (SI), wherein the configuration information is transmitted in a first radio resource control (RRC) configuration message during an RRC connected state, wherein the configuration information comprises a flat that explicitly indicates whether dedicated on-demand SI is enabled during the RRC connected state, wherein the on-demand SI comprises one or more system information blocks (SIBs); and

receive, from the UE, a dedicated message requesting one or more on-demand SIBs based on the dedicated on-demand SI being enabled; and

transmit, to the UE, the requested one or more on-demand SIBs in a second RRC configuration message.

Assignments (2)

Continuity (2)

References Cited (24)