US 11,658,783 B2
SSB transmissions in unlicensed spectrum
Peter Alriksson, Hörby (SE); Stephen Grant, Pleasanton, CA (US); and Gen Li, Beijing (CN)
Assigned to Telefonaktiebolaget LM Ericsson (Publ), Stockholm (SE)
Appl. No. 17/267,358
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Aug. 7, 2019, PCT No. PCT/EP2019/071180
§ 371(c)(1), (2) Date Feb. 9, 2021,
PCT Pub. No. WO2020/030675, PCT Pub. Date Feb. 13, 2020.
Claims priority of provisional application 62/717,090, filed on Aug. 10, 2018.
Prior Publication US 2021/0297968 A1, Sep. 23, 2021
Int. Cl. H04L 5/00 (2006.01); H04L 27/26 (2006.01); H04W 56/00 (2009.01); H04W 72/00 (2023.01); H04W 74/08 (2009.01)
CPC H04L 5/0048 (2013.01) [H04W 56/001 (2013.01); H04W 72/005 (2013.01); H04W 74/0816 (2013.01); H04L 27/2613 (2013.01)] 21 Claims
OG exemplary drawing
1. A method implemented in a wireless transceiver device arranged to operate in a cellular wireless communication network and capable of operating in an unlicensed spectrum where listen-before-talk is employed, the method comprising:
determining a first parameter, for the operation in the unlicensed spectrum, indicative on provision of synchronisation signal blocks; and
determining quasi-co-location (QCL) relationship between one or more synchronisation signal and physical broadcast channel (SS/PBCH) blocks each having a first index, by determining a second index for each one of the one or more SS/PBCH blocks by applying a modulo operation on the first index, respectively, based on the first parameter, where the QCL relationship is determined to occur if the second indices for two or more SS/PBCH blocks of the one or more SS/PBCH blocks coincide.