System and method to increase link adaptation performance with multi-level feedback
First Claim
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1. A method of explicit adaptive modulation and coding scheme selection comprising:
- receiving, at a mobile device, a first transport block containing data for the mobile device encoded with a first coding and modulating scheme;
evaluating a quality of the received transport block;
if the quality of the received transport block exceeds a threshold, providing an acknowledgment or negative acknowledgment to a network element; and
if the quality of the received transport block is below the threshold, suppressing the acknowledgment or negative acknowledgement, wherein the quality is determined to be below the threshold based on a Yamamato bit that provides a binary indication of quality of the transport block;
in response to the suppressing, receiving, at the mobile device a second transport block containing the data for the mobile device encoded with a second coding and modulating scheme, the second coding and modulating scheme being distinct from the first coding and modulating scheme;
wherein the second coding and modulating scheme is selected to increase the likelihood of successful reception of the second transport block.
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Abstract
A method and apparatus for explicit adaptive modulation and coding scheme selection, the method receiving, at a mobile device, a transport block targeted to the mobile device, and if a quality of the received transport block exceeds a threshold, providing an acknowledgment or negative acknowledgment to a network element; and if the quality of the received transport block is below the threshold, suppressing the acknowledgment or negative acknowledgement.
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Citations
12 Claims
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1. A method of explicit adaptive modulation and coding scheme selection comprising:
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receiving, at a mobile device, a first transport block containing data for the mobile device encoded with a first coding and modulating scheme; evaluating a quality of the received transport block; if the quality of the received transport block exceeds a threshold, providing an acknowledgment or negative acknowledgment to a network element; and if the quality of the received transport block is below the threshold, suppressing the acknowledgment or negative acknowledgement, wherein the quality is determined to be below the threshold based on a Yamamato bit that provides a binary indication of quality of the transport block; in response to the suppressing, receiving, at the mobile device a second transport block containing the data for the mobile device encoded with a second coding and modulating scheme, the second coding and modulating scheme being distinct from the first coding and modulating scheme; wherein the second coding and modulating scheme is selected to increase the likelihood of successful reception of the second transport block. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A mobile device comprising:
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a processor; a communications subsystem; and memory, wherein the processor, communications subsystem and memory cooperate to; receive a first transport block containing data for the mobile device encoded with a first coding and modulating scheme; evaluate a quality of the received transport block; if the quality of the received transport block exceeds a threshold, providing an acknowledgment or negative acknowledgment to a network element; and if the quality of the received transport block is below the threshold, suppressing the acknowledgment or negative acknowledgement, wherein the quality is determined to be below the threshold based on a Yamamato bit that provides a binary indication of quality of the transport block; in response to the suppressing, receive a second transport block containing the data for the mobile device encoded with a second coding and modulating scheme, the second coding and modulating scheme being distinct from the first coding and modulating scheme; wherein the second coding and modulating scheme is selected to increase the likelihood of successful reception of the second transport block. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification