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

The control hold mode from cdma2000 1x systems has been adapted to the 1xEV-DV (evolution data and voice) systems because it has a lot of benefits such as power saving, reducing of overload and channel interferences, etc. However d1xEV-DV system does not fully capture the benefits from 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 mode 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 paper 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.