Method and an apparatus for a quick retransmission of signals in a communication system
First Claim
1. An apparatus for retransmitting signals, comprising:
- means for decoding contents of a unit of received signal;
means for generating a feedback signal;
means for determining a quality metric of said unit of received signal;
means for instructing said means for generating said feedback signal to generate said feedback signal in accordance with said quality metric; and
means for preventing decoding of said unit of received signal if an indication received on a control channel indicates that said unit of received signal is not to be decoded.
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Abstract
A method and an apparatus for quick retransmission of signals in a communication system are disclosed. A transmitting terminal, e.g., a base station, transmits signals in a form of packets to a receiving terminal, e.g., a subscriber station. The receiving terminal determines if the packet was intended for the receiving terminal, and if so, the receiving terminal demodulates the packet. The receiving terminal then computes a quality metric of the packet, and compares the computed quality metric with a quality metric contained in the packet. If the quality metrics match, the packet is declared correctly received, and is forwarded for further processing. If the quality metrics fail to match, the receiving terminal sends a request for retransmission of the packet. The transmitting terminal determines which packet needs to be retransmitted based on the request for retransmission. The transmitting terminal then schedules the packet for retransmission.
58 Citations
16 Claims
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1. An apparatus for retransmitting signals, comprising:
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means for decoding contents of a unit of received signal; means for generating a feedback signal;
means for determining a quality metric of said unit of received signal;
means for instructing said means for generating said feedback signal to generate said feedback signal in accordance with said quality metric; and
means for preventing decoding of said unit of received signal if an indication received on a control channel indicates that said unit of received signal is not to be decoded. - View Dependent Claims (2, 3)
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4. An apparatus configured to retransmit signals, comprising:
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means for decoding contents of a unit of received signal; means for generating a feedback signal; means for determining a quality metric of said unit of received signal; means for instructing said means for generating said feedback signal to generate said feedback signal in accordance with said quality metric; means for detecting a preamble of said unit of received signal; and means for preventing decoding of said unit of received signal if said preamble indicates that said unit of received signal is not to be decoded. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11)
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12. An apparatus configured to retransmit signals, comprising:
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means for decoding contents of a unit of received signal; means for generating a first feedback signal; means for determining a quality metric of said unit of received signal; means for instructing said means for generating said first feedback signal to generate said first feedback signal in accordance with said quality metric; means for generating a second feedback signal; and means for instructing said means for generating said second feedback signal to generate said second feedback signal in accordance with a sequence number of said unit of received signal when a retransmission of said signal in accordance with said quality metric is declared a failure. - View Dependent Claims (13)
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14. A method for retransmitting signals, comprising:
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decoding contents of a unit of received signal; generating a feedback signal; determining a quality metric of said unit of received signal; generating said feedback signal in accordance with said quality metric; and preventing decoding of said unit of received signal if an indication received on a control channel indicates that said unit of received signal is not to be decoded.
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15. A method for retransmitting signals, comprising:
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decoding contents of a unit of received signal; generating a feedback signal; determining a quality metric of said unit of received signal; generating said feedback signal in accordance with said quality metric; detecting a preamble of said unit of received signal; and preventing decoding of said unit of received signal if said preamble indicates that said unit of received signal is not to be decoded.
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16. A method for retransmitting signals, comprising:
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decoding contents of a unit of received signal; generating a first feedback signal; determining a quality metric of said unit of received signal; generating said first feedback signal in accordance with said quality metric; generating a second feedback signal; and generating said second feedback signal in accordance with a sequence number of said unit of received signal when a retransmission of said signal in accordance with said quality metric is declared a failure.
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Specification