Wireless local area network repeater with automatic gain control for extending network coverage
First Claim
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1. A frequency translating repeater for use in a time division duplexing (TDD) radio protocol system, the frequency translating repeater comprising:
- a detector circuit configured to detect if a signal is present on one of two frequency channels associated with the frequency translating repeater;
a frequency translator configured to change a frequency channel associated with the signal from the one of the two frequency channels to an other of the two frequency channels;
a gain control circuit configured to adjust a gain of the signal; and
a delay circuit configured to add a delay to the signal to compensate for a signal detection interval, a gain adjustment interval and a transmitter configuration interval.
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Abstract
A frequency translating repeater (200) for use in a time division duplex radio protocol communications system includes an automatic gain control feature. Specifically, a received signal (330) is split to provide signal detection paths (331, 332) wherein detection is performed by amplifiers (301, 302) filters (311, 312), converters (313, 314) and a processor (315). Delay is added using analog circuits such as SAW filters (307, 308, 309, 310) and gain adjustment provided by gain control elements (303, 304, 305, 306).
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Citations
50 Claims
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1. A frequency translating repeater for use in a time division duplexing (TDD) radio protocol system, the frequency translating repeater comprising:
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a detector circuit configured to detect if a signal is present on one of two frequency channels associated with the frequency translating repeater; a frequency translator configured to change a frequency channel associated with the signal from the one of the two frequency channels to an other of the two frequency channels; a gain control circuit configured to adjust a gain of the signal; and a delay circuit configured to add a delay to the signal to compensate for a signal detection interval, a gain adjustment interval and a transmitter configuration interval. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 50)
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11. A frequency translating repeater for use in a time division duplexing (TDD) radio protocol system, the frequency translating repeater comprising:
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a detector circuit configured to detect if a signal is present on one of two frequency channels associated with the frequency translating repeater and to detect a received detected signal power of the signal; a frequency translator configured to change a frequency channel associated with the signal from the one of the two frequency channels to an other of the two frequency channels; a delay circuit configured to add a delay to the signal to compensate for a signal detection interval and a transmitter configuration interval; and a gain control circuit configured to adjust a gain value of the signal at least in part based on the received detected signal power detected by the detector circuit. - View Dependent Claims (12, 13, 14)
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15. A frequency translating repeater for use in a time division duplexing (TDD) radio protocol system, the frequency translating repeater comprising:
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a detector circuit configured to detect if a signal is present on one of two frequency channels associated with the frequency translating repeater; a frequency converter configured to convert the signal from a radio frequency (RF) signal to an intermediate frequency (IF) signal; a frequency translator configured to change a frequency channel associated with the IF signal from the one of the two frequency channels to an other of the two frequency channels; a delay circuit configured to add a delay to the IF signal to compensate for a signal detection interval and a transmitter configuration interval; and a gain control circuit configured to adjust a gain value of the IF signal. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A method for frequency translation in a frequency translating repeater for use in a time division duplexing (TDD) radio protocol system, the method comprising:
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detecting if a signal is present on one of two frequency channels associated with the frequency translating repeater; changing a frequency channel associated with the signal from the one of the two frequency channels to an other of the two frequency channels; and adding a delay to the signal to equivalent to a signal detection interval and a transmitter configuration interval. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29)
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30. A method for frequency translation in a frequency translating repeater for use in a time division duplexing (TDD) radio protocol system, the method comprising:
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detecting if a signal is present on one of two frequency channels associated with the frequency translating repeater; changing a frequency channel associated with the signal from the one of the two frequency channels to an other of the two frequency channels; adding a delay to the signal to compensate for a signal detection interval and a transmitter configuration interval; and adjusting a gain value of the signal in part based on a detected receive power level of the signal. - View Dependent Claims (31, 32, 33, 41)
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34. A method for frequency translation in a frequency translating repeater for use in a time division duplexing (TDD) radio protocol system, the method comprising:
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detecting if a signal is present on one of two frequency channels associated with the frequency translating repeater and, if so, a receive power level of the signal; converting the signal from a radio frequency (RF) signal to an intermediate frequency (IF) signal; changing a frequency channel associated with the IF signal from the one of the two frequency channels to an other of the two frequency channels; adding a delay to the IF signal to compensate for a signal detection interval and a transmitter configuration interval; and adjusting a gain value of the IF signal based at least in part on the detected receive power level of the signal. - View Dependent Claims (35, 36, 37, 38, 40)
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39. A frequency translating repeater for use in a time division duplexing communication system, the frequency translating repeater comprising:
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at least two receivers capable of receiving transmissions on at least first and second frequency channels; at least one transmitter capable of transmitting on the first frequency channel; at least one transmitter capable of transmitting on the second frequency channel; a detector circuit configured to detect if a signal is present on one of two frequency channels associated with the frequency translating repeater and for detecting a receive power level of the signal; a frequency translator configured to change a frequency channel associated with the signal from an initial one of the first and second frequency channels to a subsequent one of the first and second frequency channels; a gain control circuit for adjusting a gain of the signal; a delay circuit configured to add a delay to the signal to compensate for a signal detection interval, a gain adjustment interval and a transmitter configuration interval; and a microprocessor capable of configuring the first and second frequency channels based on pre-determined parameters stored therein, wherein configuration of a specific frequency for the first frequency channel or the second frequency channel or both is based on the pre-determined parameters, and the pre-determined parameters include at least one parameter selected from the group consisting of;
regulatory transmitter power limitations, regulatory out-of-band emissions limitations, and frequency separation between the first and second frequency channels.
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42. A frequency translating repeater for use in a time division duplexing (TDD) radio protocol system, the repeater comprising:
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means for detecting if a signal is present on one of two frequency channels associated with the frequency translating repeater; means for changing a frequency channel associated with the signal from the one of the two frequency channels to an other of the two frequency channels; and means for adding a delay to the signal to equivalent to a signal detection interval and a transmitter configuration interval. - View Dependent Claims (43, 44, 45, 46, 47, 48, 49)
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Specification