Effective MAC state transition for the mobile station power saving in 3G mobile communication systems

Abstract

The Control Hold mode from cdma2000 Ix systems has been adapted to the IxEV-D V(Evo1ution Data and Voice) systems because it has a lot of benefits such as power saving, reducing of overload and channel interferences, etc. However IxEV-DV system does not fully capture the bene$ts @om Control Hold mode, because the MS has to do continuous monitoring the F-PDCCH indicating whether the BS sends packet data or not. That is, the MS has to do monitoring the F-PDCCH (Forward Packet Data Control Channel) continuously to capture the MAC-ID while in Control Hold mod like as an operation in Active mode. This continuous monitoring of the F-PDCCH causes higher power consumption and gives an overload to the decoder block at the MS side. In this papel; to resolve these problems, we propose a new channel, F-WUCH (Forward Wake-Up Channel), to maximize the power saving of the MS, to minimize the interferences and to reduce the overhead from the continuous monitoring of the F-PDCCH in the Control Hold Mode.