US 12,250,638 B2
Method for efficient rediscovery and medium access for wake-up radios
Xiaofei Wang, North Caldwell, NJ (US); Hanqing Lou, Syosset, NY (US); and Joseph S. Levy, Merrick, NY (US)
Assigned to INTERDIGITAL PATENT HOLDINGS, INC., Wilmington, DE (US)
Filed by INTERDIGITAL PATENT HOLDINGS, INC., Wilmington, DE (US)
Filed on Aug. 29, 2023, as Appl. No. 18/239,706.
Application 18/239,706 is a continuation of application No. 16/961,142, granted, now 11,785,550, previously published as PCT/US2019/012895, filed on Jan. 9, 2019.
Claims priority of provisional application 62/691,799, filed on Jun. 29, 2018.
Claims priority of provisional application 62/616,977, filed on Jan. 12, 2018.
Prior Publication US 2024/0064646 A1, Feb. 22, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 52/02 (2009.01); H04W 84/12 (2009.01); H04W 88/06 (2009.01)
CPC H04W 52/0274 (2013.01) [H04W 52/0219 (2013.01); H04W 52/0222 (2013.01); H04W 52/0229 (2013.01); H04W 52/0216 (2013.01); H04W 84/12 (2013.01); H04W 88/06 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for use in a station (STA), the method comprising:
maintaining a Basic Service Set (BSS) parameter counter having a current counter value;
receiving a first beacon frame or a wake-up radio (WUR) action frame that includes a WUR operation element having a first counter value;
updating the BSS parameter counter from the current counter value to the first counter value received in the WUR operation element;
entering a WUR mode, wherein the STA enters into a doze state;
receiving a WUR frame that includes a second counter value;
determining that the received second counter value is different than the first counter value; and
exiting the doze state, responsive to the determination that the received second counter value is different than the first counter value, to receive a second beacon frame including an update of a plurality of BSS parameters.