Method of assigning idle channels

Telecommunications – Radiotelephone system – Zoned or cellular telephone system

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455462, H04B 720

Patent

active

061013897

ABSTRACT:
In a method of assigning an idle channel in which a base station assigns an idle channel in response to a link channel establishment request from a mobile terminal, a criterion level for judging whether an idle channel is to be used or not is set to an appropriate level which is higher than a limit level of a ratio of an interference level to a detectable signal receiving level (a DU ratio). In response to a link channel establishment request from a mobile terminal, the base station performs carrier sensing operation to obtain all idle channels and signal receiving levels of the idle channels, selects an idle channel having a level which exceeds the set criterion level and is closest to the criterion level, and assigns the selected idle channel as a link channel.

REFERENCES:
patent: 5203008 (1993-04-01), Yasuda et al.
patent: 5420863 (1995-05-01), Taketsugu
patent: 5475864 (1995-12-01), Hamabe
patent: 5566227 (1996-10-01), DeVaney
patent: 5606727 (1997-02-01), Ueda
patent: 5625672 (1997-04-01), Yamada
patent: 5793842 (1998-08-01), Schloemer et al.

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