Method for link transition in universal serial bus and system thereof

A method for link transition in a Universal Serial Bus (USB) device, the method comprising:

• transmitting a plurality of first RS-FEC (Reed Solomon Forward Error Correction) blocks by a first transmitter;
• receiving an activating signal by a receiver;
• activating a second transmitter according to a lane adapter state machine (LASM) when the receiver receives the activating signal;
• transmitting a training sequence by the second transmitter;
• transmitting a specific pattern sequence by the second transmitter after finishing transmitting the training sequence;
• determining whether a current RS-FEC block to be transmitted by the first transmitter is a DESKEW block;
• stopping transmitting the specific pattern sequence if the current RS-FEC block is determined to be the DESKEW block;
• and
• transmitting a plurality of second RS-FEC blocks by the first transmitter and the second transmitter.