US Patent No. 11,115,994

TRIGGERING/INITIATING BACKOFF PROCEDURE(S) BASED ON CONGESTION INDICATION(S) TO DEFER SCHEDULING REQUEST TRANSMISSION


Patent No. 11,115,994
Issue Date September 07, 2021
Title Triggering/initiating Backoff Procedure(s) Based On Congestion Indication(s) To Defer Scheduling Request Transmission
Inventorship
Assignee Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)

Claim of US Patent No. 11,115,994


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.