| 摘要 |
Provided is a method, system and programming product for maintaining a connection between a mobile device and a server over a wireless network in a manner that conserves the power supply of the mobile device. The claimed subject matter addresses the transmission of regular“keep-alive”packets to refresh a network address translation (NAT) server and the scanning for and connecting to faster, higher priority network connections. A configurable parameter, or power timeout, specifies an idle time. When a period of time equal to the parameter has passed with no traffic between the mobile device and the server, in either direction, periodic roaming scans and keep-alive messages are halted. As soon as traffic is resumed through the tunnel, the mobile device roams to the highest priority connection and roaming scans and keep-alive messages are resumed.
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