Patent ID: 7990901
Filing Date: 2011-08-02
Classification: H04W,Y02D

Abstract:
1. A method of reducing power consumption in a mobile communication unit for use in a Wideband Code Division Multiple Access (WCDMA) communication system, comprising: transmitting by a serving base station to the mobile communication unit, at predetermined intervals, signals comprising a paging indicator; transmitting by a remote base station individual identification signals for use by the mobile communication unit for identifying the remote base station having transmitted the individual identification signals, wherein the signals from the serving base station are on the same carrier frequency as the signals from the remote base station; switching by the mobile communication unit from standby mode to active mode periodically to receive the signals comprising the paging indicator from the serving base station and to receive individual identification signals from the remote base station; providing by the mobile communication unit a signal indicator indicating a feature of the signals comprising the paging indicator signal received from the serving base station during a first period of a first duration (τ switching by the mobile communication unit from standby mode to active mode for a second period of a second duration (τ identifying the remote base station having transmitted the individual identification signals for detecting whether a primary synchronization channel (P-SCH) is present using the individual identification signals; detecting whether the primary synchronization channel (P-SCH) is present at different periods with different durations (τ if the primary synchronization channel (P-SCH) is not present based on a measurement during the first period of a least selectable first duration (τ if the primary synchronization channel (P-SCH) is present, performing a repeated step of detecting whether the primary synchronization channel (P-SCH) is present, but based on a measurement during the second period of the second duration (τ using the individual identification signals for detecting whether a secondary synchronization channel (S-SCH) is present; and detecting whether the secondary synchronization channel (S-SCH) is present at different periods with different durations (τ