US 12,081,345 B2
Autonomous detection of status of link between initiator device and target device in UFS system
Dipakkumar Prafulkumar Abhani, Bengaluru (IN); Vasudevan Subramaniam, Bengaluru (IN); and Ken Joseph Kannampuzha, Bengaluru (IN)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Dec. 3, 2021, as Appl. No. 17/457,507.
Claims priority of application No. 202141047003 (IN), filed on Oct. 14, 2021.
Prior Publication US 2023/0117858 A1, Apr. 20, 2023
Int. Cl. H04L 1/1867 (2023.01); G06F 13/42 (2006.01)
CPC H04L 1/188 (2013.01) [G06F 13/4286 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method for autonomous detection of a status of a link between an initiator device and a target device in a Universal Flash Storage (UFS) system, comprising:
at the initiator device of the UFS system:
transmitting at least one data frame to the target device through the link;
starting a replay timer with a replay time period;
starting a turn-around timer of the initiator device with a first time period less than the replay time period;
determining whether at least one Acknowledgement and Flow Control frame (AFC) for the at least one data frame is received before expiry of the turn-around timer; and
performing, by the initiator device:
detecting the status of the link as active in response to determining that the at least one AFC frame is received from the target device before expiry of the turn-around timer, and
detecting the status of the link by restarting the turn-around timer with a second time period in response to determining, at least, that the at least one AFC frame was not received before expiry of the turn-around timer.