Telecommunications – Transmitter and receiver at separate stations – Plural transmitters or receivers
Patent
1997-03-27
2000-01-18
Bost, Dwayne D.
Telecommunications
Transmitter and receiver at separate stations
Plural transmitters or receivers
455502, 455507, 455561, 370337, 370503, 370350, H04B 7005, H04B 700, H04J 306
Patent
active
060164301
ABSTRACT:
A radio communication system including a plurality of base stations which communicate with a plurality of radio terminals respectively is provided with a capability of avoiding occurrence of radio interference of control channel signals among a plurality of base stations even when a plurality of the base stations are located in the close vicinity of each other. The base station of the radio communication system is provided with a device for receiving, when the power is turned on, a control channel signal which is being transmitted at a certain interval by each of the other base stations in the system, a device for frame synchronizing each of TDMA frames of the control channel signal which is received, a device for extracting base station identification information of each of the other base stations from the TDMA frames which are frame synchronized, and a device for storing in a memory each of the base station identification information which is extracted. The base station further includes a device for determining a cycle of transmitting a superframe signal in accordance with the number of the other base stations using the control channel in the system, which is determined based upon the base station identification information stored in the memory.
REFERENCES:
patent: 5528597 (1996-06-01), Gerszberg et al.
patent: 5678181 (1997-10-01), Kamachi
patent: 5724665 (1998-03-01), Abbasi et al.
patent: 5732073 (1998-03-01), Kusaki et al.
patent: 5825817 (1998-10-01), Tanaka et al.
Bost Dwayne D.
Persino Raymond B.
Ricoh & Company, Ltd.
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