Patent ID: 11956151
Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
Field: Digital communication (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 1:
2. The TCP flow control method according to claim 1, wherein generating the current substitute ACK packet comprises:
when the current packet number is identified as smaller than the last substitute number, setting a sum of the last substitute number and a difference between the current packet number and the last packet number as the current substitute number by the input ACK filter, with the current substitute number serving as a packet number of the current substitute ACK packet;
when the current packet number is determined as identical to the last packet number and the last substitute ACK packet exists, determining whether a maximum value of selective acknowledgement (SACK) data of the current ACK packet equals the last substitute number by the input ACK filter;
when the maximum value of SACK data of the current ACK packet is different from the last substitute number or when the current packet number is determined as identical to the last packet number and there is no last substitute ACK packet, setting the maximum value of SACK data of the current ACK packet as the current substitute number by the input ACK filter; and
when the maximum value of SACK data of the current ACK packet equals the last substitute number, setting the sum of a predetermined value and the last substitute number as the current substitute number by the input ACK filter.