Self-adjusting RF repeater arrangements for wireless telephone systems
First Claim
1. An RF repeater arrangement for a broadcasting a transmit signal from a base station to a mobile handset and for supplying a receive signal from the handset to the base station in a wireless telephone system, said RF repeater arrangement comprising:
- a first RF repeater part interfacing with said base station;
at least one second RF repeater part spaced from said first RF repeater part;
said second RF repeater part having an antenna for exchanging the transmit and receive signals with said handset as radio signals; and
a signal conduit connecting said first RF repeater part to said second RF repeater part;
said first RF repeater part including a first level detector for detecting the signal level of the transmit 10 signal at said first RF repeater part, and a modulator for modulating the detected signal level as signal level data onto a carrier for transmission through said signal conduit to said second RF repeater part; and
said second RF repeater part comprising a signal level regulator for amplifying the transmit signal, a second level detector for detecting the level of the transmit signal amplified by said signal level regulator, 15 a demodulator for demodulating the signal data from said first RF repeater part, a control device for comparing the demodulated signal level and the signal level detected by said second level detector to provide a control output to said signal level regulator, and an antenna for broadcasting the transmit signal to the handset; and
said signal level regulator having a gain which is variable in accordance with said control output for 20 increasing the signal level detected by said second level detector in accordance with the level detected by the first level detector to thereby counteract attenuation of said transmit signal by said signal conduit.
12 Assignments
0 Petitions
Accused Products
Abstract
An RF repeater arrangement for exchanging transmit and receive signals between a handset and a base station in a wireless telephone system automatically compensates for attenuation losses. The RF repeater arrangement includes first and second RF repeater parts connected by a signal conduit, the first part interfacing with the base station and having a signal level detector for detecting the level of the transmit signal, a microprocessor controller for quantizing and encoding the signal level detected by the level detector and a modulator for modulating the signal level data and outputting the modulated signal level data to the signal conduit. The second part has a demodulator for demodulating the signal level data, an amplifier for amplifying the transmit signal, a signal level detector for detecting the level of the transmit signal amplified by the amplifier, and a microprocessor controller for comparing the demodulated signal level data and the amplified signal level and correspondingly adjusting the amplifier to counteract attenuation of the transmit signal and the receive signal along the signal conduit.
124 Citations
12 Claims
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1. An RF repeater arrangement for a broadcasting a transmit signal from a base station to a mobile handset and for supplying a receive signal from the handset to the base station in a wireless telephone system, said RF repeater arrangement comprising:
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a first RF repeater part interfacing with said base station; at least one second RF repeater part spaced from said first RF repeater part; said second RF repeater part having an antenna for exchanging the transmit and receive signals with said handset as radio signals; and a signal conduit connecting said first RF repeater part to said second RF repeater part; said first RF repeater part including a first level detector for detecting the signal level of the transmit 10 signal at said first RF repeater part, and a modulator for modulating the detected signal level as signal level data onto a carrier for transmission through said signal conduit to said second RF repeater part; and said second RF repeater part comprising a signal level regulator for amplifying the transmit signal, a second level detector for detecting the level of the transmit signal amplified by said signal level regulator, 15 a demodulator for demodulating the signal data from said first RF repeater part, a control device for comparing the demodulated signal level and the signal level detected by said second level detector to provide a control output to said signal level regulator, and an antenna for broadcasting the transmit signal to the handset; and said signal level regulator having a gain which is variable in accordance with said control output for 20 increasing the signal level detected by said second level detector in accordance with the level detected by the first level detector to thereby counteract attenuation of said transmit signal by said signal conduit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An RF repeater arrangement for exchanging time division duplex transmit and receive signals between a handset and a base station in a wireless telephone system, said RF repeater arrangement comprising:
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a first RF repeater connected to said base station; a second RF repeater part for amplifying the transmit and receive signals; the second RF repeater part having an antenna for exchanging the transmit and receive signals with said handset as radio signals; and a signal conduit connecting said first RF repeater part to said second RF repeater part; said first RF repeater part including a first signal level detector for detecting the level of the transmit signal at said first RF repeater part, a first microprocessor controller for quantizing and encoding signal level data representing the signal level detected by said first signal level detector and a modulator for modulating the signal level data and outputting the modulated signal level data through said signal conduit to said second RF repeater part; and said second RF repeater part comprising a demodulator for demodulating the signal level data, an amplifier for amplifying the transmit and receive signals, a second signal level detector for detecting the level of said transmit signal amplified by said amplifier and the level of said receive signal from said antenna, a variable attenuator connected between said signal conduit and said amplifier and a second microprocessor controller for comparing the demodulated signal level data and the transmit signal level detected by said second signal level detector and correspondingly adjusting said attenuator to counteract attenuation of said transmit and receive signals along said signal conduit, said second microprocessor controller being connected to said amplifier for providing thereto timing derived from said transmit and receive signals. - View Dependent Claims (12)
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Specification