Patent Number: 7,715,334

Title: Method to sustain TCP connection

Abstract: The present invention relates to network communication systems for managing client/server connections in a wireless environment. In accordance with the invention, a mobile communication unit (i.e., client), deploys keepalive packets at selected times in order to reset a keepidle timer of a server (e.g., host computer). By periodically resetting the keepidle timer a current connection between the mobile communication unit and server can be maintained as long as desired even when the mobile communication unit is in a power suspend mode. When in a power suspend mode, the mobile communication unit can briefly awake long enough to activate its transmitter and send a keepalive packet to the server to maintain the current connection. In this manner, the mobile communication unit can obtain the power savings of being in primarily a power suspend mode, but still prevent the current connection from timing out.

Inventors: Harsch; Thomas B. (Stow, OH)

Assignee: Symbol Technologies, Inc.

International Classification: G08C 17/00 (20060101); H04L 12/28 (20060101)

Expiration Date: 5/11/12018