US 11,757,552 B2
Network node, wireless device and methods therein for performing and handling superposed transmissions in a wireless communications network
Shiwei Gao, Nepean (CA); Mattias Frenne, Uppsala (SE); Robert Mark Harrison, Grapevine, TX (US); Bo Lincoln, Lund (SE); Siva Muruganathan, Stittsville (CA); and Zhang Zhang, Beijing (CN)
Assigned to Telefonaktiebolaget LM Ericsson (Publ), Stockholm (SE)
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed on Jun. 15, 2020, as Appl. No. 16/901,822.
Application 16/901,822 is a continuation of application No. 15/750,416, granted, now 10,727,967, previously published as PCT/SE2016/050769, filed on Aug. 18, 2016.
Claims priority of provisional application 62/207,510, filed on Aug. 20, 2015.
Prior Publication US 2020/0328833 A1, Oct. 15, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. H04J 11/00 (2006.01); H04J 7/00 (2006.01); H04L 5/00 (2006.01); H04L 27/26 (2006.01); H04W 52/34 (2009.01); H04J 13/00 (2011.01); H04W 72/23 (2023.01)
CPC H04J 11/004 (2013.01) [H04J 7/00 (2013.01); H04J 13/0003 (2013.01); H04L 5/0014 (2013.01); H04L 5/0037 (2013.01); H04L 5/0044 (2013.01); H04L 5/0069 (2013.01); H04L 27/2604 (2013.01); H04W 52/346 (2013.01); H04L 27/2601 (2013.01); H04W 72/23 (2023.01)] 20 Claims
OG exemplary drawing
 
1. A method performed by a network node for performing a superposed transmission in a wireless communications network, the superposed transmission comprising a first signal intended for a first wireless device from the network node and a second signal intended for a second wireless device from the network node that are superposed and transmitted simultaneously by the network node on the same transmission resources in the wireless communications network, the method comprising:
transmitting first information indicating at least one of a first and a second ratio of a total transmission power, P, allocated for the superposed transmission to at least the first wireless device in the wireless communications network, the first ratio to be used for the first signal in the superposed transmission, the second ratio to be used for the second signal in the superposed transmission;
when the network node is configured to perform the superposed transmission using a transmission mode comprising Cell-specific Reference Signals, CRS, transmitting second information indicating a third ratio between an average transmission power allocated for the superposed transmission per Resource Element, RE, in the Orthogonal Frequency Division Multiplexing, OFDM, grid not comprising CRS, and an average CRS transmission power allocated per RE; and
performing the superposed transmission to the first and second wireless device simultaneously on the same transmission resources by transmitting the first signal using a transmission power according to the first ratio and by transmitting the second signal using a transmission power according to the second ratio, and by allocating the total transmission power, P, of the first and second signals according to the third ratio.