US 11,115,994 B2
Triggering/initiating backoff procedure(s) based on congestion indication(s) to defer scheduling request transmission
Jonas Pettersson, Luleå (SE)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Appl. No. 16/75,273
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Feb. 17, 2016, PCT No. PCT/SE2016/050120
§ 371(c)(1), (2) Date Aug. 3, 2018,
PCT Pub. No. WO2017/142446, PCT Pub. Date Aug. 24, 2017.
Prior Publication US 2019/0045524 A1, Feb. 7, 2019
Int. Cl. H04W 72/12 (2009.01); H04W 74/08 (2009.01); H04W 28/02 (2009.01); H04W 56/00 (2009.01); H04W 72/14 (2009.01); H04W 74/02 (2009.01); H04W 48/12 (2009.01); H04W 48/06 (2009.01); H04L 12/841 (2013.01); H04L 12/851 (2013.01); H04W 80/02 (2009.01)
CPC H04W 72/1252 (2013.01) [H04W 28/0278 (2013.01); H04W 28/0284 (2013.01); H04W 48/06 (2013.01); H04W 48/12 (2013.01); H04W 56/001 (2013.01); H04W 72/1242 (2013.01); H04W 72/1247 (2013.01); H04W 72/14 (2013.01); H04W 74/02 (2013.01); H04W 74/0816 (2013.01); H04W 74/0833 (2013.01); H04W 74/0891 (2013.01); H04L 47/24 (2013.01); H04L 47/28 (2013.01); H04W 80/02 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A method for enabling load control related to scheduling requests for uplink grants in a wireless communication system, the method comprising:
transmitting a congestion indication to a group of wireless communication devices for synchronized triggering of backoff procedures that enables deferring, in each of the wireless communication devices, transmission of scheduling requests until one or more backoff procedures in the wireless communication devices are completed, wherein the synchronized triggering is achieved by simultaneously transmitting the congestion indication to the group of wireless communication devices; and
determining a priority level of an event triggered a scheduling request based on a time between a most recently transmitted congestion indication and reception of the scheduling request for determining when to grant access to a shared uplink channel;
wherein congestion indications are transmitted with a shorter length of a time interval between repeated transmissions of congestion indications when a level of congestion is higher compared to when the level of congestion is lower.