Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Patent
1998-05-11
2000-10-03
Hunter, Daniel S.
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
455447, 455448, 455449, 455450, 455 62, 455 63, H04Q 736, H04Q 730, H04Q 734
Patent
active
061284998
ABSTRACT:
In two superimposing communication systems using the same frequencies, where the second communication system was not considered in the frequency planning of the first cellular communication system, frequencies are to be allocated to the second communication system in a way that they do not interfere with the first communication system. Accordingly, a medium field strength of each frequency is calculated after a time interval has expired. A number of frequencies are selected in correspondence with the value of the medium field strength. A medium value is formed with the field strengths of the selected number of frequencies. The time interval of the calculation of the medium field strength of each frequency is changed in response to the medium value.
REFERENCES:
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patent: 5828963 (1998-10-01), Grandhi et al.
patent: 5884145 (1999-03-01), Haartsen
patent: 5898928 (1999-04-01), Karlsson et al.
patent: 5901357 (1999-05-01), D'Avello et al.
patent: 5920819 (1999-07-01), Asanuma
Stahl Wolfgang
Zimmermann Gerd
Gantt Alan T.
Hunter Daniel S.
Telefonaktibolaget LM Ericsson
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