Patent ID: 7984314
Filing Date: 2011-07-19
Classification: G06F,Y02D

Abstract:
1. A method comprising: transitioning a link of an electronic device to an active power state when a transaction is pending for the device; transitioning the link from the active power state to a standby power state if there is no transaction pending for the device and if a link power management engine for the device determines that transaction activity on the link is anticipated for the device, transitioning the link from the active power state to an idle power state if there is no transaction pending for the device and if the link power management engine determines that transaction activity on the link is not anticipated for the device; and transitioning the link of the electronic device from the standby power state to the idle power state if there is no transaction pending for the device and if the device is not active; wherein the determination that there is no activity is anticipated for the device is based on the link power management engine's knowledge of upcoming traffic patterns.