Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Patent
1995-07-11
1999-05-11
Chin, Wellington
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
455453, 455525, 455561, H04Q7/20
Patent
active
059038438
ABSTRACT:
A radio communication system and a traffic channel assignment method for realizing the assignment of traffic channels capable of improving the efficiency of use of frequency in the case where the traffic density is high and improving a radio link quality in the case where the traffic density is low. A base station judges the traffic density from a carrier to interference power ratio (CIR) on each channel capable of being selected as a traffic channel. In the case where the traffic density is low, a traffic channel assignment mode selecting an available channel having a greater CIR is assigned as a traffic channel to a mobile station. In the case where the traffic density is high, a traffic channel assignment mode selecting an available channel having a smaller CIR is assigned as a traffic channel to the mobile station. Thereby, it is possible to structure a radio communication system which can cope with the condition of the traffic density of the neighborhood.
REFERENCES:
patent: 5257402 (1993-10-01), Crislev
patent: 5448761 (1995-09-01), Ushirokawa
patent: 5519884 (1996-05-01), Duque-Arton et al.
patent: 5561847 (1996-10-01), Kataoka
IEICE Japan National Spring Conference (1989) B-860.
Koya Masahiro
Nakagoshi Arata
Sugiura Noriyuki
Suzuki Hideya
Chin Wellington
Hitachi , Ltd.
Sobutka Philip J.
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