Apparatus and method for transmit power control in a wireless network
First Claim
1. A method comprising:
- repeatedly transmitting messages from a first wireless node at a transmit power;
receiving feedback from a second wireless node, the feedback based on a quality of reception of at least some of the messages at the second wireless node; and
adjusting the transmit power of the first wireless node based on the feedback to maintain the quality of reception proximate to a setpoint;
wherein the feedback comprises quantized values; and
wherein adjusting the transmit power comprises;
identifying numerical values associated with at least some of the quantized values, including a numerical value associated with a most recently transmitted message;
integrating the numerical values associated with multiple messages; and
adjusting the transmit power based on the numerical value associated with the most recently transmitted message and the integrated numerical values.
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Accused Products
Abstract
A method includes repeatedly transmitting messages from a first wireless node at a transmit power. The method also includes receiving feedback from a second wireless node, where the feedback is based on a quality of reception of at least some of the messages at the second wireless node. The method further includes adjusting the transmit power of the first wireless node based on the feedback to maintain the quality of reception proximate to a setpoint. The feedback could be received from multiple second wireless nodes. The feedback could include quantized values. The quality of reception could include a bit error rate, a packet error rate, and/or a receive signal strength. The quality of reception can be determined for a sliding window associated with a subset of the transmitted messages.
61 Citations
21 Claims
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1. A method comprising:
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repeatedly transmitting messages from a first wireless node at a transmit power; receiving feedback from a second wireless node, the feedback based on a quality of reception of at least some of the messages at the second wireless node; and adjusting the transmit power of the first wireless node based on the feedback to maintain the quality of reception proximate to a setpoint; wherein the feedback comprises quantized values; and wherein adjusting the transmit power comprises; identifying numerical values associated with at least some of the quantized values, including a numerical value associated with a most recently transmitted message; integrating the numerical values associated with multiple messages; and adjusting the transmit power based on the numerical value associated with the most recently transmitted message and the integrated numerical values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An apparatus comprising:
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a wireless radio configured to repeatedly transmit messages at a transmit power, the wireless radio also configured to receive feedback from a receiving node, the feedback based on a quality of reception of at least some of the messages at the receiving node; and a controller configured to adjust the transmit power of the wireless radio based on the feedback to maintain the quality of reception proximate to a setpoint; wherein the feedback comprises quantized values; and wherein the controller is configured to adjust the transmit power by; identifying numerical values associated with at least some of the quantized values, including a numerical value associated with a most recently transmitted message; integrating the numerical values associated with multiple messages; and adjusting the transmit power based on the numerical value associated with the most recently transmitted message and the integrated numerical values. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A tangible computer readable storage medium embodying a computer program, the computer program comprising:
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computer readable program code for initiating repeated transmission of messages from a first wireless node at a transmit power; computer readable program code for obtaining feedback from a second wireless node, the feedback based on a quality of reception of at least some of the messages at the second wireless node; and computer readable program code for adjusting the transmit power of the first wireless node based on the feedback to maintain the quality of reception proximate to a setpoint; wherein the feedback comprises quantized values; and wherein the computer readable program code for adjusting the transmit power comprises; computer readable program code for identifying numerical values associated with at least some of the quantized values, including a numerical value associated with a most recently transmitted message; computer readable program code for integrating the numerical values associated with multiple messages; and computer readable program code for adjusting the transmit power based on the numerical value associated with the most recently transmitted message and the integrated numerical values. - View Dependent Claims (20, 21)
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Specification