US 7,321,567 B2
Method and apparatus for preventing a spurious retransmission after a planned interruption of communications
Kamran A. Qazi, Arlington Heights, Ill. (US); Vijay Kolli, Schaumburg, Ill. (US); and Peter J. Wilhelm, Chicago, Ill. (US)
Assigned to Motorola, Inc., Schaumburg, Ill. (US)
Filed on Sep. 30, 2003, as Appl. No. 10/675,739.
Prior Publication US 2005/0070246 A1, Mar. 31, 2005
Int. Cl. H04B 1/06 (2006.01)
U.S. Cl. 370—278  [370/338; 370/328] 20 Claims
OG exemplary drawing
 
1. A method in a wireless communication system employing a communication protocol in which a retransmission timeout value is calculated by a sender from a round-trip time, the method for preventing a spurious retransmission during a planned interruption of communications, the method comprising:
determining whether the planned interruption is about to occur; and
in response to determining that the planned interruption is about to occur, progressively increasing the round-trip time for each data segment in a plurality of successive data segments sent before the planned interruption occurs, such that the retransmission timeout value calculated from the progressively increasing round-trip time becomes larger than a time required to complete the planned interruption, thereby preventing the spurious retransmission.