Oki Telecom, Inc.

Robert C Witter

Clifton J Barber

Anthony B Waldroup

Michael A Wise

Jerry Richard Carr

A call forwarding automation feature in a wireless telephone provides automated activation and deactivation of conventional carrier system call forwarding. The wireless telephone provides for storing multiple call forwarding telephone numbers, selecting a call forwarding telephone number based upon location information, automatically activating call forwarding to the selected telephone number during a wireless telephone power down sequence, and automatically deactivating the call forwarding during a wireless telephone power up sequence. Programming is also provided for configuring and enabling the call forwarding feature. In another embodiment, the wireless telephone automatically prompts the user for activation of call forwarding each time the user powers down the wireless telephone. The process also provides the user an ability to select from a list of stored call forwarding telephone numbers to use, as well as providing the user an ability to manually input a new telephone number. In this embodiment, the location information is used only to provide a suggested forwarding telephone number, rather than automatically activating call forwarding without user input during the power down sequence. If user input is not received during a defined time period in response to the prompt, the wireless telephone automatically activates call forwarding only if an automatic call forwarding time-out default option is enabled. The user is also automatically prompted each time the user powers up the wireless telephone to deactivate call forwarding if call forwarding is activated, and real-time idle mode automated call forwarding activation and deactivation are also provided.

One number service using mobile assisted call forwarding facilities

The present invention includes a method and an apparatus for reducing power consumption in a wireless telephone. The wireless telephone is programmed to enter a reduced power mode for a sleep interval of time upon failing to access a base station. Additionally, the overall base station accessing process is considerably shortened by only searching once through the sequence of available carrier spectrums (e.g., digital and analog carriers for multi-mode mobile stations) before entering the reduced power mode. Also, when searching through a code division multiple access (CDMA) channel, the present invention includes searching only once through all pseudo-random number (PN) code timing locations when searching for a base station.

System unavailablity power reduction method with early failure and no

A method and an apparatus for searching code division multiple access pilot signal energies includes limiting a pilot signal window size above a lower limit and only analyzing search result data corresponding to an instructed pilot signal window size. A central processing unit instructs a searcher receiver within a mobile station modem application specific integrated circuit to search for pilot signal energies within an instructed pilot signal search window unless the instructed pilot signal window size is smaller than a pilot signal window size lower limit. In such a case, the pilot signal search window size is artificially designated as the pilot signal window size lower limit to prevent excessive search completion interrupts from over utilizing central processing unit resources. The central processing unit analyzes only the middle search results corresponding to the pilot signal window size as instructed from the base station to maintain the ability of effectively searching pilot signal window sizes smaller than the pilot signal window size lower limit.

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Lawrenceville, GA, United States of America

Robert C Witter