US 12,302,440 B2
Transmission, retransmission, and hybrid automatic repeat request process using preconfigured uplink resources in idle mode
Bharat Shrestha, Cupertino, CA (US); Seau S. Lim, Cupertino, CA (US); and Marta Martinez Tarradell, Cupertino, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Appl. No. 17/427,167
Filed by Apple Inc., Cupertino, CA (US)
PCT Filed Feb. 10, 2020, PCT No. PCT/US2020/017492
§ 371(c)(1), (2) Date Jul. 30, 2021,
PCT Pub. No. WO2020/167657, PCT Pub. Date Aug. 20, 2020.
Claims priority of provisional application 62/805,162, filed on Feb. 13, 2019.
Prior Publication US 2022/0104306 A1, Mar. 31, 2022
Int. Cl. H04W 76/27 (2018.01); H04L 1/1812 (2023.01); H04L 1/1867 (2023.01); H04L 5/00 (2006.01); H04W 76/34 (2018.01)
CPC H04W 76/27 (2018.02) [H04L 1/1812 (2013.01); H04L 1/188 (2013.01); H04L 5/0055 (2013.01); H04W 76/34 (2018.02)] 20 Claims
OG exemplary drawing
 
1. A method, comprising:
establishing a first preconfigured uplink resource (PUR) and a second PUR for use by a user equipment (UE) in IDLE mode, wherein the first PUR uses a first hybrid automatic repeat request (HARQ) process;
transmitting uplink data using the first PUR while in IDLE mode using the first HARQ process;
starting a PUR retransmission timer;
monitoring a control channel for an acknowledgement message prior to an expiration of the PUR retransmission timer;
identifying the expiration of the PUR retransmission timer prior to receiving the acknowledgement message;
in response to the identifying, determining that the first HARQ process has failed; and
in response to the determining, starting a second HARQ process to retransmit the uplink data using the second PUR, wherein the second HARQ process is different from the first HARQ process.