US 12,096,439 B2
Method and device for buffer status reporting
Milos Tesanovic, Middlesex (GB); Soenghun Kim, Suwon-si (KR); and Jaehyuk Jang, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Appl. No. 17/266,789
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
PCT Filed Aug. 8, 2019, PCT No. PCT/KR2019/010014
§ 371(c)(1), (2) Date Feb. 8, 2021,
PCT Pub. No. WO2020/032648, PCT Pub. Date Feb. 13, 2020.
Claims priority of application No. 1812926 (GB), filed on Aug. 8, 2018; and application No. 1812970 (GB), filed on Aug. 9, 2018.
Prior Publication US 2021/0345383 A1, Nov. 4, 2021
Int. Cl. H04W 72/21 (2023.01); H04W 28/02 (2009.01); H04W 76/10 (2018.01)
CPC H04W 72/21 (2023.01) [H04W 28/0278 (2013.01); H04W 76/10 (2018.02)] 13 Claims
OG exemplary drawing
 
1. A method of reporting a buffer status of a terminal, the method comprising:
triggering a buffer status report (BSR) in a media access control (MAC) layer, based on a BSR triggering condition;
transmitting, to a base station, a scheduling request (SR) for transmitting uplink data;
receiving an uplink resource allocation grant (UL grant) from the base station, in response to the SR;
assembling a media access control protocol data unit (MAC PDU) including a BSR MAC control element (BSR MAC CE); and
cancelling all BSRs triggered prior to the MAC PDU assembly, at a time of transmitting the MAC PDU, in case that the BSR MAC CE includes buffer status information up to a last event that triggered the BSR prior to the MAC PDU assembly and the buffer status information covers all of more than one logical channel group (LCG) having data for transmission.