US 12,273,289 B2
Synchronization signal / physical broadcast channel block method detection and management
Peter Alriksson, Hörby (SE); Emma Wittenmark, Lund (SE); and Stephen Grant, Pleasanton, CA (US)
Assigned to Telefonaktiebolaget LM Ericsson (Publ), Stockholm (SE)
Appl. No. 17/761,004
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Sep. 23, 2020, PCT No. PCT/EP2020/076611
§ 371(c)(1), (2) Date Mar. 16, 2022,
PCT Pub. No. WO2021/063774, PCT Pub. Date Apr. 8, 2021.
Claims priority of provisional application 62/909,507, filed on Oct. 2, 2019.
Prior Publication US 2022/0345269 A1, Oct. 27, 2022
Int. Cl. H04W 74/08 (2024.01); H04L 5/00 (2006.01); H04W 74/0808 (2024.01)
CPC H04L 5/0048 (2013.01) [H04W 74/0808 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method, of a network node operating in a communication network, for Synchronization Signal/Physical Broadcast Channel, SS/PBCH, block management, the method comprising:
determining whether a network condition is met;
signalling to a communication terminal to apply a first SS/PBCH block detection method for SS/PBCH block detection when the network condition is determined to be met, the signalling being comprised in a master information block, MIB;
signalling to the communication terminal to apply a second SS/PBCH block detection method for SS/PBCH block detection when the network condition is determined not be met, the signalling being comprised in a master information block, MIB;
transmitting SS/PBCH blocks according to the second SS/PBCH block detection method or according to the first SS/PBCH block detection method, based on whether the network condition is met, transmitting the SS/PBCH blocks according to the first SS/PBCH block detection method including transmitting the SS/PBCH blocks at fixed time positions, transmitting the SS/PBCH blocks according to the second SS/PBCH block detection method including transmitting the SS/PBCH at a variable position within the length of a transmission window; and
determining a modulo parameter Q for determination of quasi co-location, QCL, of the SS/PBCH blocks, the variable position being a position i that is to be quasi co-located with an SS/PBCH block transmitted in position i+k*Q, where k=0, 1, 2 . . . and where available positions in the transmission window are determined by sub-carrier spacing for the transmission.