Pausing keep-alive messages and roaming for virtual private networks on mobile computing devices to save battery power
US8085702B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 2, 2010 |
| Grant date | Dec 27, 2011 |
| Priority date | — |
| Expiry date | Mar 2, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/28
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.