Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Patent
1997-12-16
2000-08-08
Eisenzopf, Reinhard J.
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
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.
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patent: 5475864 (1995-12-01), Hamabe
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patent: 5625672 (1997-04-01), Yamada
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Kimura Shigeru
Koizumi Manabu
Eisenzopf Reinhard J.
Kyocera Corporation
Mehrpour N.
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