US 12,301,519 B2
Aperiodic scheduling request
Per Löfving, Mölndal (SE); Pär Ankel, Nödinge (SE); Jan Lindskog, Pixbo (SE); Robert Baldemair, Solna (SE); and Claes Tidestav, Bålsta (SE)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Appl. No. 17/777,480
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Nov. 18, 2020, PCT No. PCT/EP2020/082518
§ 371(c)(1), (2) Date May 17, 2022,
PCT Pub. No. WO2021/099376, PCT Pub. Date May 27, 2021.
Claims priority of provisional application 62/937,050, filed on Nov. 18, 2019.
Prior Publication US 2022/0407673 A1, Dec. 22, 2022
Int. Cl. H04L 5/14 (2006.01); H04L 1/1812 (2023.01); H04L 5/00 (2006.01); H04W 72/1268 (2023.01)
CPC H04L 5/1469 (2013.01) [H04L 1/1812 (2013.01); H04L 5/0053 (2013.01); H04W 72/1268 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method performed by a user entity (UE), the UE being adapted to transmit uplink data according to a New Radio (NR) Time Division Duplex (TDD) scheme, with a NR base station (gNB), the UE being further adapted to transmit a Hybrid Automatic Repeat Request Acknowledgement (HARQ-ACK) information, being an acknowledge (ACK) or a not-acknowledge (NACK) for received data on a downlink channel and being adapted for transmitting a Scheduling Request (SR) comprising an indication of data or no data to be pending for transmittal, the method comprising:
establishing if Physical Downlink Control Channel for Downlink (PDCCH) is successfully decoded;
establishing if HARQ-ACK information on HARQ-ACK Physical Uplink Control Channel (PUCCH) is available in a slot;
establishing if an SR-Physical Uplink Control Channel (SR-PUCCH) is present in the slot, the SR-PUCCH being a periodical resource configured for sending SRs;
if it is established that no SR-PUCCH is present in the slot, generating an SR;
appending the SR to the HARQ-ACK information; and
transmitting the SR appended to the HARQ-ACK information in HARQ-ACK PUCCH, wherein the appended SR appears as an aperiodic SR (AP SR) in the TDD scheme.