US 11,751,254 B2
System information requesting method, corresponding user equipment, and computer-readable medium
Chongming Zhang, Shanghai (CN); Shohei Yamada, Sakai (JP); and Renmao Liu, Shanghai (CN)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP); and FG INNOVATION COMPANY LIMITED, Tuen Mun (HK)
Filed by Sharp Kabushiki Kaisha, Sakai (JP); and FG Innovation Company Limited, Tuen Mun (HK)
Filed on Apr. 21, 2022, as Appl. No. 17/726,379.
Application 17/726,379 is a continuation of application No. 16/632,490, granted, now 11,337,252, previously published as PCT/CN2018/096629, filed on Jul. 23, 2018.
Claims priority of application No. 201710627134.X (CN), filed on Jul. 27, 2017.
Prior Publication US 2022/0248472 A1, Aug. 4, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 74/08 (2009.01); H04W 76/27 (2018.01); H04L 5/00 (2006.01); H04W 74/00 (2009.01)
CPC H04W 74/0833 (2013.01) [H04L 5/0055 (2013.01); H04W 74/008 (2013.01); H04W 76/27 (2018.02)] 17 Claims
OG exemplary drawing
 
15. A user equipment (UE), comprising:
a memory storing instructions; and
a processor configured to execute the instructions to cause the UE to:
trigger a medium access control (MAC) layer to initiate a random access procedure for transmitting a preamble, wherein the preamble corresponds to a piece of system information (SI), wherein the piece of SI is required by a radio resource control (RRC) layer of the UE;
receive, in the RRC layer, an indication from the MAC layer;
acquire, in the RRC layer, the piece of SI required by the RRC layer of the UE when the indication is received from the MAC layer;
receive information about a plurality of preamble sequences, a plurality of pieces of SI, and a plurality of system information blocks (SIBs), wherein:
a first one of the pieces of SI is required by the UE,
a second one of the pieces of SI is associated with two of the SIBs, and
the two of the SIBs have a same scheduling period;
select one of the preamble sequences based on the information and the first one of the pieces of SI required by the UE; and
transmit the selected one of the preamble sequences as the preamble to a base station.