公开(公告)号：BR0110962A

公开(公告)日：2003-06-03

申请号：BR0110962

申请日：2001-05-03

Applicant: MOTOROLA INC

Inventor： PECEN MARK EDWARD ,  OTTING MARCIA ,  DORSEY DON

IPC: H04L1/16 ,  H04L12/28 ,  H04L12/56 ,  H04L29/08 ,  H04W28/04 ,  H04W84/04 ,  G08C15/00 ,  H04J3/24 ,  G09G1/14 ,  G09G5/00 ,  H04B7/212

Abstract: A method for sending acknowledged transport data between a mobile station (202) and a base station system (208) in a GPRS system (200) in which a protocol control unit (214) counts the number of data blocks in an acknowledgement message sent by the mobile station in response to a data packet transmission. A heuristic is then defined, based on the number of data blocks counted, and the number of corresponding data blocks corresponding to a subsequent data packet transmission is compared with the heuristic to determine that a virtual acknowledgement channel is being requested when the number of corresponding data blocks in the subsequent packet data transmission is less than the heuristic.