US 11,751,138 B2
Electronic shelf tag system with standardized radio communication protocol
Andreas Rössl, Fernitz-Mellach (AT)
Assigned to SES-IMAGOTAG GmbH, Fernitz-Mellach (AT)
Appl. No. 17/617,698
Filed by SES-IMAGOTAG GMBH, Fernitz-Mellach (AT)
PCT Filed Jun. 17, 2019, PCT No. PCT/EP2019/065894
§ 371(c)(1), (2) Date Dec. 9, 2021,
PCT Pub. No. WO2020/253940, PCT Pub. Date Dec. 24, 2020.
Prior Publication US 2022/0240184 A1, Jul. 28, 2022
Int. Cl. H04W 52/02 (2009.01); H04W 84/18 (2009.01); H04W 76/27 (2018.01)
CPC H04W 52/0229 (2013.01) [H04W 52/0206 (2013.01); H04W 52/0216 (2013.01); H04W 52/0219 (2013.01); H04W 52/0274 (2013.01); H04W 76/27 (2018.02)] 13 Claims
OG exemplary drawing
 
1. An electronic shelf label system (1), which comprises:
at least one battery operated shelf label client (2), which comprises an energy-saving sleep mode without wireless communication readiness according to a wireless standard and an active mode with wireless communication readiness according to the wireless standard, and which comprises a wireless wake-up receiver (137), which is designed to cause the quitting of the sleep mode and the adoption of the active mode when a wake-up (WUS) signal is received and which has a current consumption of less than 3 μA for a supply voltage of 1.8 volts and a data rate of 1 kbit/s, and
an access point (6) which is designed for wireless communication according to the wireless standard, with the at least one shelf label client (2), and which comprises a wireless wake-up transmitter (21) for transmitting the wake-up signal (WUS), wherein the wireless wake-up transmitter (21) is designed to be controllable by the access point (6) with regards to the time of transmission of the wake-up signal (WUS) and the access point (6) defines the time as the initiation of a wireless connection set-up according to the wireless standard for the at least one shelf label client (2), particularly with wait time for the change from the sleep mode to the active mode.