Security techniques for device assisted services
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United States of America Patent
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Jul 17, 2018
Grant Date -
Jul 21, 2016
app pub date -
Nov 20, 2015
filing date -
Jan 28, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
A wireless end-user device has a wireless wide-area network (WWAN) modem and multiple execution environments. Applications execute in an application execution partition. A kernel execution partition executes processes for classifying, by application, traffic passing between the WWAN modem and the applications, measuring per-application traffic, and applying per-application traffic policies to the traffic. A separate protected execution partition contains agents to receive the traffic measurements, configure the traffic policies, and securely communicate with a network service controller. Low-level traffic measurement and control is advantageously and efficiently performed in the kernel, while the traffic-management processes that interface with the kernel are separately secured to resist hacking.
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