US 12,368,499 B2
Method of non-terrestrial network assistance information update procedure and related device
Yung-Lan Tseng, Taipei (TW); Chien-Chun Cheng, Taipei (TW); Chia-Hao Yu, Taipei (TW); Hung-Chen Chen, Taipei (TW); and Mei-Ju Shih, Taipei (TW)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Appl. No. 17/791,193
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP)
PCT Filed Jan. 6, 2021, PCT No. PCT/CN2021/070401
§ 371(c)(1), (2) Date Jul. 6, 2022,
PCT Pub. No. WO2021/139665, PCT Pub. Date Jul. 15, 2021.
Claims priority of provisional application 62/957,782, filed on Jan. 6, 2020.
Prior Publication US 2023/0344508 A1, Oct. 26, 2023
Int. Cl. H04B 7/185 (2006.01); H04W 56/00 (2009.01)
CPC H04B 7/18513 (2013.01) [H04W 56/005 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method for performing, by a user equipment (UE), a non-terrestrial network (NTN) assistance information update procedure, the method comprising:
receiving, from a first cell, a handover command comprising first NTN assistance information associated with the first cell, the handover command indicating a second cell as a target cell for a handover procedure;
storing the first NTN assistance information;
performing the NTN assistance information update procedure based on the handover command;
selecting the second cell to camp on according to the handover command that comprises the first NTN assistance information;
receiving, from the second cell, an NTN-specific system information block (SIB) after selecting the second cell to camp on, the NTN-specific SIB indicating a validity time period;
obtaining, from the second cell, second NTN assistance information associated with the validity time period;
replacing the stored first NTN assistance information with the second NTN assistance information; and
counting down an NTN validity timer corresponding to the validity time period to zero.