Method for facilitating data link layer initialization and electronic device

An electronic device configured to communicate with another electronic device, the electronic device comprising:

• a controller including:
• a physical layer circuit for signal transmission;
• and
• a link controller, coupled to the physical layer circuit,
• wherein the controller is configured to perform a plurality of operations during data link layer initialization of the link controller, the plurality of operations including:
• a) transmitting a first acknowledgment and flow control (AFC) frame for a traffic class to the other electronic device, the first AFC frame including a first indicator to notify the other electronic device that the electronic device does not receive any AFC frame for the traffic class from the other electronic device;
• b) determining that an AFC frame for the traffic class is received from the other electronic device within a first time interval after the first AFC frame is transmitted, the first time interval being less than an expiration value of a protection timer for the traffic class;
• and
• c) in response to the AFC frame for the traffic class received from the other electronic device within the first time interval, transmitting a second AFC frame for the traffic class to the other electronic device, the second AFC frame including a second indicator to notify the other electronic device that the electronic device receives an AFC frame for the traffic class from the other electronic device.