Patent ID: 8099091
Filing Date: 2012-01-17
Classification: H04W

Abstract:
1. A method, comprising: at a mobile wireless communication device, wherein when the mobile wireless communication device is connected in a first configuration mode to a wireless network, receiving a control message at a local receive time from a radio network subsystem in the wireless network; extracting from the received control message a time indication for when to start a configuration mode change; reconfiguring the mobile wireless communication device to a second configuration mode at a local start time based on the extracted time indication and the local receive time, wherein the mobile wireless communication device transmits and receives messages as a series of consecutive frames, and the second configuration mode includes transmitting or receiving at least one compressed frame having a transmission gap and at least one uncompressed frame having no transmission gaps; maintaining a local frame counter based on a system frame counter provided by the radio network subsystem in the wireless network, wherein the extracted time indication to start the configuration mode change indicates a value for the local frame counter, and the value for the local frame counter is calculated modulo an integer N; determining a first extended local frame counter value based on the system frame counter for a first received frame in the received control message; determining a second extended local frame counter value based on the system frame counter for a last received frame in the received control message; determining a third extended local frame counter value based on the extracted time indication, the third extended local frame counter value being greater than the second extended local frame counter value; and configuring the mobile wireless communication device to the second configuration mode at a time earlier than indicated by the third extended local frame counter value when the difference between the third and first extended local frame counter values is at least equal to the integer value N.