Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Patent
1997-09-04
2000-04-04
Bost, Dwayne D.
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
455434, 455464, H04Q 720
Patent
active
060471883
ABSTRACT:
When an interference signals is detected by a base station, the base station issues a report to a switching apparatus. The switching apparatus checks self to see whether it is in a standby mode waiting for a frequency change completion report from another base station which is in the process of changing the control channel frequency. If the switching apparatus is satisfied that the station should be given a new control channel frequency, it issues a frequency change command to the requesting base station, and the base station receiving the command revises the current control channel frequency. In the meantime, all other requests from other stations are denied by the switching apparatus until the requesting base station has successfully completed the process of changing the control channel frequency. The base station acknowledges the completion of frequency change process by sending a frequency change completion report to the switching apparatus.
REFERENCES:
patent: 3764915 (1973-10-01), Cox et al.
patent: 5732353 (1998-03-01), Haartsen
patent: 5845209 (1998-12-01), Iwata
Iwano Shigeki
Noda Osamu
Bost Dwayne D.
NEC Corporation
Persino Raymond B.
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