Method for registering a communication device for communication

Details Method for registering a communication device for communication Method for registering a communication device for communication

1999-03-08

2000-11-14

Nguyen, Lee

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

455 62, 4551661, 455435, H04Q 720

Patent

active

06148203&

ABSTRACT:
A communication device (100) contains a plurality of bandmaps in a memory (102). Upon powering up the device, the device first scans frequencies listed in a learned bandmap (104). If no suitable carrier signals are detected, the device scans the frequencies listed in a present regional bandmap (106), and this scan may be repeated several times. Upon failing to detect a suitable carrier at any of the frequencies listed in the present regional bandmap, the device alternates between scanning the present regional bandmap and segments of a world wide bandmap (108), which is a comprehensive list of all possible frequencies at which the device may operate. If a carrier is detected indicating the device is in a new region, the regional bandmap corresponding to the new region is set to be used as the present regional bandmap.

REFERENCES:
patent: 5586338 (1996-12-01), Lynch et al.
patent: 5732349 (1998-03-01), Sanpei et al.
patent: 5734980 (1998-03-01), Hooper et al.
patent: 5937351 (1999-08-01), Seekins et al.

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