US 12,335,967 B2
Termination of small data transmission
Hyoungsuk Jeon, Centreville, VA (US); Taehun Kim, Fairfax, VA (US); Esmael Hejazi Dinan, McLean, VA (US); Yunjung Yi, Vienna, VA (US); Kyungmin Park, Vienna, VA (US); and Hua Zhou, Vienna, VA (US)
Assigned to Comcast Cable Communications, LLC, Philadelphia, PA (US)
Filed by Comcast Cable Communications, LLC, Philadelphia, PA (US)
Filed on Mar. 31, 2022, as Appl. No. 17/710,229.
Claims priority of provisional application 63/168,376, filed on Mar. 31, 2021.
Prior Publication US 2022/0322419 A1, Oct. 6, 2022
Int. Cl. H04W 72/21 (2023.01); H04W 72/0446 (2023.01); H04W 72/23 (2023.01); H04W 74/0833 (2024.01); H04W 76/20 (2018.01); H04W 76/30 (2018.01)
CPC H04W 72/23 (2023.01) [H04W 72/0446 (2013.01); H04W 72/21 (2023.01); H04W 74/0833 (2013.01); H04W 76/20 (2018.02); H04W 76/30 (2018.02)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
receiving, by a wireless device, a first radio resource control (RRC) message indicating an uplink grant for a small data transmission (SDT) procedure in a state other than an RRC connected state;
based on no data being available for a medium access control (MAC) packet data unit (PDU) during the SDT procedure, sending, via the uplink grant, the MAC PDU comprising a buffer status report (BSR);
receiving, prior to expiration of a time window and after sending the BSR, a downlink control information (DCI) message comprising a downlink assignment; and
receiving, based on the downlink assignment, a second RRC message for the SDT procedure.
 
10. A method comprising:
receiving, by a wireless device, a radio resource control (RRC) message indicating one or more uplink grants for transmission; and
sending, via a first uplink resource of the one or more uplink grants and based on an RRC state of the wireless device being a state other than an RRC connected state and further based on no data being available for a medium access control (MAC) packet data unit (PDU), the MAC PDU comprising a buffer status report (BSR);
receiving, prior to expiration of a time window and after sending the BSR, a downlink control information (DCI) message comprising a downlink assignment; and
receiving, based on the downlink assignment, a second RRC message.
 
16. A method comprising:
sending, by a base station, a first radio resource control (RRC) message indicating an uplink grant for a small data transmission (SDT) procedure with a wireless device in a state other than an RRC connected state;
receiving, via the uplink grant, a medium access control (MAC) packet data unit (PDU) comprising a buffer status report (BSR) and not comprising any data;
sending, prior to expiration of a time window and after receiving the BSR, a downlink control information (DCI) message comprising a downlink assignment; and
sending, based on the downlink assignment, a second RRC message indicating completion of the SDT procedure.