Patent ID: 8000842
Filing Date: 2011-08-16
Classification: H04L,H04W,Y02D

Abstract:
1. A method for flexible discontinuous receive management in a telematics unit in a vehicle comprising the steps of: entering an On State at a network access device of the telematics unit when the vehicle ignition is turned from off to on and entering the Standby State at the network access device when the vehicle ignition is off; when in the Standby State, resetting a Standby Counter to an initial value, determining availability of a communications service from a wireless network and if the communication service is not available, operating the telematics unit in a first mode of the Standby State wherein a sleep cycle value of the telematics unit is above a first predetermined threshold and deducting a number of units periodically from the Standby Counter, wherein the number of units is a ratio of the average current drain from a vehicle battery while attempting to access a wireless network when communication service is not available, to the average current drain from the vehicle battery while attempting to access a wireless network when communication service is available; if the communication service is available, operating the telematics unit in a second mode of the Standby State wherein the sleep cycle value is in a range from zero to the first predetermined threshold, and deducting one unit periodically from the Standby Counter; and determining whether the Standby Counter is greater than zero and entering an Off State if the Standby Counter is not greater than zero.