US 11,838,866 B2
Wake-up signal management
Leif Wilhelmsson, Lund (SE); Miguel Lopez, Solna (SE); Sven Mattisson, Lomma (SE); and Dennis Sundman, Sollentuna (SE)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed on Nov. 30, 2022, as Appl. No. 18/071,948.
Application 18/071,948 is a continuation of application No. 16/625,638, granted, now 11,546,850, previously published as PCT/EP2018/063058, filed on May 18, 2018.
Claims priority of provisional application 62/524,940, filed on Jun. 26, 2017.
Prior Publication US 2023/0089473 A1, Mar. 23, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 52/02 (2009.01)
CPC H04W 52/0229 (2013.01) [H04W 52/0206 (2013.01); H04W 52/0238 (2013.01); H04W 52/0245 (2013.01); H04W 52/0274 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for a wireless communication device comprising a main receiver and a wake-up receiver (WUR) having a channel selective filter, the method comprising:
determining a correlation metric for the WUR, based on the following:
a signal received via the WUR using the channel selective filter configured according to a first one of a plurality of available bandwidths, and
a reference signal that is representative of a wake-up signal (WUS) transmitted by an access point node;
detecting a WUS included in the received signal, based on the correlation metric in relation to a first threshold; and
in response to detecting the WUS, selecting a second one of the plurality of available bandwidths for the channel selective filter, based on the correlation metric in relation to a second threshold different than the first threshold.