发明名称 Method and system for maintaining a wireless data connection
摘要 A system and method for establishing and maintaining an “always-on” data connection to a wireless network through the use of a back off timer and a service check timer is disclosed. The back off timer is initialized to a determined value when a connection is not established. When the timer expires, a connection attempt is made. As further connection attempts are made, the back off timer is set to ever-increasing values. When the data connection is established, the service check timer is initialized. The data connection status is determined at the expiry of the service check timer. When, at the expiry of the service check timer, the data connection is determined to be lost, the connection method is employed.
申请公布号 US7715868(B2) 申请公布日期 2010.05.11
申请号 US20070928848 申请日期 2007.10.30
申请人 RESEARCH IN MOTION LIMITED 发明人 ZHAO WEN;CHAUDRY SHAHID R.;PLESTID T. L. TREVOR;XUE HAO;YEUNG GRACE T. Y.;YANOSHEWSKI CLIFFORD W.
分类号 H04M1/00;H04L12/56;H04L29/06;H04W74/08;H04W76/02;H04W76/06 主分类号 H04M1/00
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