US 11,991,003 B2
Contention window size updates for code block group based retransmission configurations
Salvatore Talarico, Santa Clara, CA (US); Gang Xiong, Santa Clara, CA (US); Yingyang Li, Santa Clara, CA (US); and Carlos H. Aldana, Santa Clara, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Appl. No. 17/415,845
Filed by Apple Inc., Cupertino, CA (US)
PCT Filed Mar. 20, 2020, PCT No. PCT/US2020/023900
§ 371(c)(1), (2) Date Jun. 18, 2021,
PCT Pub. No. WO2020/191309, PCT Pub. Date Sep. 24, 2020.
Claims priority of provisional application 62/821,847, filed on Mar. 21, 2019.
Prior Publication US 2022/0085924 A1, Mar. 17, 2022
Int. Cl. H04L 1/1829 (2023.01); H04L 1/1812 (2023.01); H04W 74/0816 (2024.01)
CPC H04L 1/1854 (2013.01) [H04L 1/1812 (2013.01); H04L 1/1832 (2013.01); H04W 74/0816 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method, comprising:
performing a code block group (CBG) based uplink transmission;
identifying an uplink (UL) reference burst of the CBG based uplink transmission;
determining, at a first time, a contention window size (CWS) adjustment, wherein the CWS adjustment comprises:
resetting the CWS for all priority classes at the wireless device to a minimum value if:
a UL grant is received and a new data indicator (NDI) bit for at least one of active hybrid automatic request (HARQ) processes is toggled; and
a UL grant is received and the NDI bit is not toggled and at least one or more acknowledgements (ACKs) for Y % of CBGs for at least one of the active HARQ processes are indicated, wherein for individual bits of CBG transmit information (CBGTI) in the UL grant, a value of 1 is considered a negative acknowledgement (NACK) when the NDI is not toggled and values other than 1 are considered as ACKs; or
otherwise, performing one of maintaining the CWS for all priority classes or increasing the CWS for all priority classes at the wireless device to a next higher level.