Sequence Number Update Mechanism for Deadlock-Free Packet Transmission

The patent introduces a feedback mechanism where the receiving end sends acknowledgment signals to the transmitting end to confirm successful packet reception. This feedback loop allows the transmitting end to verify whether packets were correctly received and to retransmit only when necessary, preventing both unnecessary retransmissions and deadlocks caused by noise-induced errors in acknowledgment signals.

The patent uses an intermediary approach by introducing a specific protocol structure with sequence numbers and acknowledgment signals that mediate between the transmitting and receiving ends. This intermediary mechanism ensures that even when noise causes signal errors, the system can detect and correct them through the structured exchange of sequence numbers and acknowledgments, preventing deadlock while maintaining protocol simplicity.

The feedback mechanism ensures that retransmissions occur only when genuinely needed. The receiving end sends acknowledgment signals confirming successful reception, and the transmitting end uses these acknowledgments to determine whether retransmission is necessary. This prevents repeated unnecessary retransmissions caused by noise while maintaining high error detection accuracy through the structured acknowledgment process.

The protocol uses partial action by transmitting only the necessary information (sequence numbers and acknowledgment signals) rather than retransmitting entire packets unnecessarily. When noise causes false error detection, the system performs partial retransmission of only the affected packets with updated sequence numbers, rather than excessive retransmission of all packets, thereby maintaining transmission efficiency while ensuring error correction.