Method of effciently automatic repeating requirements using variable length sequence numbers

Application Number: 00108291
Application Date: 2000.05.10
Publication Number: 1274217
Publication Date: 2000.11.22
Priority Information: 1999/5/14 US 09/312167
International: H04L1/12
Applicant(s) Name: Lucent Technologies Inc.
Inventor(s) Name: Faruc Wuraho Kohan;Dauglas N. Konisiri;Saras Kumar
Patent Agency Code: 11038
Patent Agent: jiang shixun
Abstract A variable length sequence number is used to identify data units in a communication channel. The sequence number associated with the most recent data that has been received successfully and the sequence number expected with the next new data message to be received are examined to determine the minimum size sequence number necessary to unambiguously identify to the transmitter incorrectly received data that must be retransmitted in a later message. The receiver provides the transmitter with the sequence number associated with the last successfully received byte of data and the sequence number associated with the next expected byte of data. The receiver communicates this information to the transmitter using a NAK control message.