Method and apparatus for power control in an ultra wideband radio system

• US 20060178163A1
• Filed: 04/06/2006
• Published: 08/10/2006
• Est. Priority Date: 06/14/1999
• Status: Active Grant

• Current Assignee: Alereon Incorporated (PNG Telecommunications, Inc.)
• Original Assignee: Alereon Incorporated (PNG Telecommunications, Inc.)
• Inventors: Richards, James L., Fullerton, Larry W., Cowie, Ivan A.
• Granted Patent: US 7,209,724 B2
• Time in Patent Office: Days
• US Class Current: 455/522
• CPC Class Codes: H04B 1/7163 using impulse radio
• CPC Class Codes: H04B 1/7183 Synchronisation
• CPC Class Codes: H04B 2001/6908 using time hopping
• CPC Class Codes: H04W 52/20 using error rate
• CPC Class Codes: H04W 52/24 using SIR [Signal to Interference Ratio] or other wireless path parameters
• CPC Class Codes: H04W 52/241 taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
• CPC Class Codes: H04W 52/362 Aspects of the step size
• CPC Class Codes: H04W 52/367 Power values between minimum and maximum limits, e.g. dynamic range

Abstract

A method for power control in an ultra wideband impulse radio system includes: (a) transmitting an impulse radio signal from a first transceiver; (b) receiving the impulse radio signal at a second transceiver; (c) determining at least one performance measurement of the received impulse radio signal; and (d) controlling output power of at least one of the first transceiver and the second transceiver in accordance with the at least one performance measurement.

Claims

1-15. -15. (canceled)

16. A method for power control in an ultra wideband radio system comprising:

(a) transmitting an ultra wideband radio signal from a first transceiver;

(b) receiving said ultra wideband radio signal at a second transceiver;

(c) determining at least one performance measurement associated with said received ultra wideband radio signal; and

(d) controlling output power of at least one of said first transceiver or said second transceiver in accordance with said at least one performance measurement.

17. A method for power control in an ultra wideband radio system as recited in claim 16, wherein said at least one performance measurement is selected from a group of performance measurements consisting of bit error rate, signal-to-noise ratio and received signal strength.

18. A method for power control in an ultra wideband radio system as recited in claim 16, wherein said controlling said output power comprises controlling integration gain.

19. A method for power control in an ultra wideband radio system as recited in claim 16, wherein said controlling said output power comprises controlling pulse peak power of a further ultra wideband radio signal.

20. A method for power control in an ultra wideband radio system as recited in claim 16, wherein said controlling said output power comprises controlling pulse height of a further ultra wideband radio signal.

21. A method for power control in an ultra wideband radio system as recited in claim 16, wherein said controlling said output power comprises controlling a quantity of pulses per bit of information.

22. A method for power control in an ultra wideband radio system as recited in claim 16, wherein said controlling said output power comprises controlling a quantity of pulses per period of time.

23. An ultra wideband radio transceiver for communicating with a second ultra wideband radio transceiver;

the ultra wideband radio transceiver comprising;

(a) an ultra wideband radio transmitter;

(b) an ultra wideband radio receiver;

said ultra wideband radio receiver receiving an ultra wideband radio signal from said second ultra wideband radio transceiver; and

(c) a power controller;

said power controller controlling output power of said ultra wideband radio transmitter according to at least one performance measurement.

24. An ultra wideband radio transceiver as recited in claim 23, wherein the ultra wideband radio transceiver further comprises:

(d) a signal evaluator;

said signal evaluator determining said at least one performance measurement of said received ultra wideband radio signal.

25. An ultra wideband radio transceiver as recited in claim 23, wherein said at least one performance measurement is selected from a group consisting of bit error rate, signal-to-noise ratio and received signal power.

26. An ultra wideband radio transceiver as recited in claim 23, wherein said power controller controls the output power by controlling integration gain of said ultra wideband radio receiver.

27. An ultra wideband radio transceiver as recited in claim 23, wherein said power controller controls the output power by controlling pulse peak power of ultra wideband signals transmitted by said ultra wideband radio transmitter.

28. An ultra wideband radio transceiver as recited in claim 23, wherein said power controller controls the output power by controlling pulse height of ultra wideband signals transmitted by said ultra wideband radio transmitter.

29. An ultra wideband radio transceiver as recited in claim 23, wherein said power controller controls the output power by controlling quantity of pulses per bit of information of ultra wideband signals transmitted by said ultra wideband radio transmitter.

30. An ultra wideband radio transceiver as recited in claim 23, wherein said power controller controls the output power by controlling quantity of pulses transmitted by said ultra wideband radio transmitter within a time period.

31. A method for power control in an ultra wideband radio system comprising:

transmitting an ultra wideband radio signal from a first transceiver;

receiving said ultra wideband radio signal at a second transceiver;

determining at least one performance measurement associated with the received ultra wideband radio signal;

determining a power control update based on the at least one performance measurement;

forming a signal from a data stream and the power control update;

transmitting the signal to the first transceiver;

obtaining the power control update from the signal at the first transceiver; and

controlling output power of said first transceiver based on the power control update.

32. The method of claim 31, wherein the power control update comprises data relating to the at least one performance measurement.

33. An ultra wideband radio communication system, comprising:

a first ultra wideband radio transceiver operable to;

receive an ultra wideband radio signal;

determine at least one performance measurement of said received ultra wideband radio signal;

determine a power control update based on the at least one performance measurement;

form a signal from a data stream and the power control update; and

transmit the signal; and

a second ultra wideband radio transceiver comprising a power controller, wherein the second ultra wideband radio transceiver is operable to receive the signal and obtain the power control update from the signal at the second transceiver and the power controller is operable to control output power of said ultra wideband radio transmitter based on the power control update.

34. The system of claim 33, wherein the power control update comprises data relating to the at least one performance measurement.