US 12,451,996 B2
RLC AM selective retransmission and window movement
Christian Hofmann, Munich (DE); Amr Abdelrahman Yousef Abdelrahman Mostafa, Munich (DE); Panagiotis Botsinis, Munich (DE); Sameh M. Eldessoki, Munich (DE); and Tarik Tabet, Carlsbad, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Sep. 19, 2023, as Appl. No. 18/370,384.
Claims priority of application No. 20220100781 (GR), filed on Sep. 23, 2022.
Prior Publication US 2024/0106571 A1, Mar. 28, 2024
Int. Cl. H04L 1/1607 (2023.01); H04L 1/1812 (2023.01); H04L 5/00 (2006.01)
CPC H04L 1/1642 (2013.01) [H04L 1/1816 (2013.01); H04L 5/0055 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method comprising:
determining that transmission of a radio link channel (RLC) service data unit (SDU) having a first sequence number was not successful; and
based on a determination that the RLC SDU is not to be re-transmitted:
moving a start location of an RLC transmission window to an RLC SDU that (i) has a sequence number greater than the first sequence number and (ii) has not been acknowledged;
generating an RLC protocol data unit (PDU) with (i) a sequence number that corresponds to the first sequence number and (ii) a payload size of zero; and
sending the generated RLC PDU to another device to indicate that the RLC SDU having the first sequence number is to be skipped.