US 12,034,660 B2
Coexistence of reference signals in wireless communication networks
Mattias Frenne, Uppsala (SE); and Lars Lindbom, Karlstad (SE)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Appl. No. 17/279,983
Filed by TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
PCT Filed Sep. 25, 2019, PCT No. PCT/IB2019/058131
§ 371(c)(1), (2) Date Mar. 25, 2021,
PCT Pub. No. WO2020/065553, PCT Pub. Date Apr. 2, 2020.
Claims priority of provisional application 62/738,434, filed on Sep. 28, 2018.
Prior Publication US 2022/0038234 A1, Feb. 3, 2022
Int. Cl. H04L 5/00 (2006.01)
CPC H04L 5/0048 (2013.01) 20 Claims
OG exemplary drawing
 
1. A method in a radio network node, the radio network node operating according to a first radio access technology and a second radio access technology, the first and second radio access technologies using a same subcarrier spacing, the method comprising:
transmitting an indication to a wireless device indicating that the first radio access technology and the second radio access technology are coexisting on a same carrier, the indication being a parameter in an information element of a Radio Resource Control, RRC, message;
transmitting a downlink transmission to the wireless device operating according to the first radio access technology, the downlink transmission including reference signals of the first radio access technology, the reference signals of the first radio access technology being located at a first symbol location within the downlink transmission when the reference signals of the first radio access technology are determined not to collide with reference signals of the second radio access technology, and the reference signals of the first radio access technology being located at a second symbol location within the downlink transmission when the reference signals of the first radio access technology are determined to collide with the reference signals of the second radio access technology, the second symbol location being either before the first symbol location or after the first symbol location.