US 12,126,451 B2
Method of enabling HARQ, network entity and computer program
Charlie Pettersson, Solna (SE); Miguel Lopez, Solna (SE); Leif Wilhelmsson, Lund (SE); Dennis Sundman, Sollentuna (SE); and Sebastian Max, Cologne (DE)
Assigned to Telefonaktiebolaget LM Ericsson (Publ), Stockholm (SE)
Appl. No. 17/437,603
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Mar. 12, 2020, PCT No. PCT/EP2020/056640
§ 371(c)(1), (2) Date Sep. 9, 2021,
PCT Pub. No. WO2020/182942, PCT Pub. Date Sep. 17, 2020.
Claims priority of provisional application 62/817,011, filed on Mar. 12, 2019.
Prior Publication US 2022/0158771 A1, May 19, 2022
Int. Cl. H04L 1/1812 (2023.01); H04L 1/1829 (2023.01); H04L 1/1867 (2023.01)
CPC H04L 1/1816 (2013.01) [H04L 1/1864 (2013.01); H04L 1/1896 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method of enabling Hybrid Automatic Request, HARQ, in an IEEE 802.11 communication, the method comprising:
transmitting, in an element in a Block Acknowledgement, BA, setup of a Medium Access Control, MAC, message, which element indicates a request to use HARQ;
receiving a response to the request;
starting to apply HARQ; and
bits of a BA bitmap in a NACK during application of HARQ indicating which codewords are erroneously received, and a fragment subfield in the BA being remapped to a codeword identifier subfield, the BA bitmap having a 1-to-N mapping, each bit of the BA bitmap corresponding to a segment of N codewords, where N is an integer corresponding to a minimum number of codewords of a retransmission.