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US 6,212,397 B1Granted
Method and system for controlling remote multipoint stations
AssigneeTexas Instruments Incorporated
InventorsJames L. Langston, Michael F. Black, William K. Myers, James S. Marin, Douglas B. Weiner
Life of this patent
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Abstract
Multipoint Stations are controlled by one or more pilot tones broadcasted by a base station. The pilot tones are used to control the local oscillators of the remote stations both for receive and for transmit. The pilot tone is also used to control the input gain and the transmit gain of the remote station.
Claims4
A point-to-multipoint communications system comprising:
- a nodal transmitter transmitting alternating polarization payload signals at the same frequency band about a node;
- said nodal transmitter transmitting over each sector a pilot signal of the same polarization as the payload signals;
- a plurality of transceivers located at multipoints about each sector each adapted to receive said pilot signal;
- and
- said transceivers responsive to said pilot signal for controlling the amplitude level of the incoming signal received at the multipoint transceiver and for controlling the amplitude level of the transmitted signal from the multipoint transceivers back to the nodal transmitter.
2 more elements
A point-to-multipoint communications system comprising:
- a nodal transmitter transmitting alternating polarization payload signals at the same frequency band about a node;
- said nodal transmitter transmitting over each sector a pair of pilot signals of the same polarization as the payload signals, said pilot signals separated by a fixed frequency;
- a plurality of transceivers located at multipoints about each sector each adapted to receive said pilot signals;
- and
- said transceivers responsive to one of said pair of pilot signals for controlling the amplitude level of the incoming signal received at the multipoint transceiver and for controlling the amplitude level of the transmitted signal from the multipoint transceivers back to the nodal transmitter.
2 more elements
Dependencies are inferred from the claim text.