US 12,069,562 B2
Apparatus and method for acquisition of on-demand system information in connected state
Atsushi Ishii, Vancouver, WA (US); Tatsushi Aiba, Sakai (JP); and Kazunari Yokomakura, Sakai (JP)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Appl. No. 17/630,364
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP)
PCT Filed Aug. 4, 2020, PCT No. PCT/JP2020/029892
§ 371(c)(1), (2) Date Jan. 26, 2022,
PCT Pub. No. WO2021/029288, PCT Pub. Date Feb. 18, 2021.
Claims priority of provisional application 62/886,042, filed on Aug. 13, 2019.
Prior Publication US 2024/0049117 A1, Feb. 8, 2024
Int. Cl. H04W 48/12 (2009.01); H04L 5/00 (2006.01); H04W 72/232 (2023.01)
CPC H04W 48/12 (2013.01) [H04L 5/0053 (2013.01); H04W 72/232 (2023.01)] 9 Claims
OG exemplary drawing
 
1. A wireless terminal that communicates over a radio interface with a radio access node of a radio access network (RAN), the wireless terminal comprising:
receiver circuitry configured to receive, in a radio resource control (RRC) connected state, one or more configuration messages via dedicated signaling(s), the one or more configuration messages comprising:
a timer configuration for a timer, and;
a configuration for Physical Downlink Control Channel (PDCCH) monitoring;
transmitter circuitry configured to transmit, in the RRC connected state, a system information (SI) request message to request at least one system information block (SIB);
processor circuitry configured to: start the timer based on the timer configuration, and;
perform an SI acquisition process, wherein;
the SI acquisition process comprises:
reception of Downlink Control Information (DCI) on PDCCH based on the configuration for PDCCH monitoring, and reception of Physical Downlink Shared Channel (PDSCH) scheduled by using the DCI, and;
the acquisition process continues until the at least one SIB is successfully received or the timer expires;
wherein a RNTI designated for the acquisition of the requested the at least one SIB is used for scrambling Cyclic Redundancy Check (CRC) parity bits attached to the DCI.