US 12,192,899 B2
Transmission of wakeup signal through millimeter wave and sub-6 GHz bands
Muhammad Nazmul Islam, Edison, NJ (US); Juergen Cezanne, Ocean Township, NJ (US); Ashwin Sampath, Skillman, NJ (US); and Vasanthan Raghavan, West Windsor Township, NJ (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Aug. 16, 2018, as Appl. No. 16/104,014.
Claims priority of provisional application 62/547,616, filed on Aug. 18, 2017.
Prior Publication US 2019/0059056 A1, Feb. 21, 2019
Int. Cl. H04L 27/26 (2006.01); H04B 7/06 (2006.01); H04L 1/00 (2006.01); H04L 5/00 (2006.01); H04L 5/14 (2006.01); H04W 52/02 (2009.01); H04W 68/00 (2009.01); H04W 72/044 (2023.01); H04W 76/28 (2018.01)
CPC H04W 52/0229 (2013.01) [H04B 7/0695 (2013.01); H04L 1/00 (2013.01); H04L 5/001 (2013.01); H04L 5/0048 (2013.01); H04L 5/008 (2013.01); H04L 5/0092 (2013.01); H04L 27/26 (2013.01); H04W 52/0216 (2013.01); H04W 68/005 (2013.01); H04W 76/28 (2018.02); H04L 5/0023 (2013.01); H04L 5/0035 (2013.01); H04L 5/0055 (2013.01); H04L 5/14 (2013.01); H04W 72/046 (2013.01)] 26 Claims
OG exemplary drawing
 
1. A method for wireless communication, comprising:
identifying that data is available to be transmitted to a user equipment (UE) that is operating in a discontinuous reception (DRX) mode;
transmitting, via a directional beam to the UE based at least in part on the data being available, a first wakeup message using a first band supported for reception by the UE according to a beamformed configuration;
determining whether a response to the first wakeup message is received on the first band based at least in part on transmitting the first wakeup message;
transmitting, via an omni-directional configuration to the UE based at least in part on determining that the response failed to be received, a second wakeup message using a second band supported for reception by the UE according to the omni-directional configuration, the second band associated with the second wakeup message being different from the first band associated with the first wakeup message;
receiving a response message from the UE using the second band, the response message indicating that the UE received the second wakeup message using the second band but did not receive the first wakeup message using the first band;
transmitting a set of reference signals using the first band and according to a beam sweeping configuration based at least in part on the receiving of the response message using the second band;
receiving a beam recovery signal in response to the set of reference signals, the beam recovery signal comprising a beam index associated with a transmit beam from the set of reference signals; and
transmitting the data that is available to the UE using the first band and according to the beam index received in the beam recovery signal.