Method to sustain TCP connection

Details Method to sustain TCP connection Method to sustain TCP connection

2008-07-29

2008-07-29

Chan, Wing F. (Department: 2619)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S401000, C455S450000

Reexamination Certificate

active

11459593

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.

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