Dynamic error rate target for link adaptation
AssigneeNokia Solutions and Networks Oy
InventorsSuresh Kalyanasundaram, Shalini Gulati
Life of this patent
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Abstract
Various example embodiments may relate to link adaptation. An apparatus may determine a first signal quality estimate for a signal. The apparatus may further determine a BLER estimate based on acknowledgements or decoding results for data blocks of the signal. The apparatus may further determine a second signal quality estimate for the signal based on the BLER estimate. The apparatus may further determine a signal quality offset based on a difference between the first signal quality estimate and the second signal quality estimate. The apparatus may further determine transmission parameter(s) for at least one subsequent data block based on the first signal quality estimate and the signal quality offset.
Claims13
An apparatus, comprising:
- at least one processor;
- and
- at least one non-transitory memory including computer program code;
- the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to:
- determine a first signal quality estimate for a signal;
- determine a block error rate estimate based on acknowledgements or decoding results for a plurality of data blocks of the signal;
- determine a second signal quality estimate for the signal based on the block error rate estimate;
- recursively determine the block error rate based on a weighted sum of a previous block error rate estimate and an output of an indicator function,
- wherein the indicator function is configured to output a positive value for a negative acknowledgement or unsuccessful decoding of a current data block and a substantially zero value for a positive acknowledgement or successful decoding of the current data block;
- determine a signal quality offset based on a difference between the first signal quality estimate and the second signal quality estimate;
- and
- determine at least one transmission parameter for at least one subsequent data block based on the first signal quality estimate and the signal quality offset.
A method, comprising:
- determining a first signal quality estimate for a signal;
- determining a block error rate estimate based on acknowledgements or decoding results for a plurality of data blocks of the signal;
- determining a second signal quality estimate for the signal based on the block error rate estimate;
- recursively determining the block error rate based on a weighted sum of a previous block error rate estimate and an output of an indicator function,
- wherein the indicator function is configured to output a positive value for a negative acknowledgement or unsuccessful decoding of a current data block and a substantially zero value for a positive acknowledgement or successful decoding of the current data block;
- determining a signal quality offset based on a difference between the first signal quality estimate and the second signal quality estimate;
- and
- determining at least one transmission parameter for at least one subsequent data block based on the first signal quality estimate and the signal quality offset.
A computer program comprising a non-transitory program storage device comprising instructions for causing an apparatus to perform at least the following:
- determining a first signal quality estimate for a signal;
- determining a block error rate estimate based on acknowledgements or decoding results for a plurality of data blocks of the signal;
- determining a second signal quality estimate for the signal based on the block error rate estimate;
- recursively determining the block error rate based on a weighted sum of a previous block error rate estimate and an output of an indicator function,
- wherein the indicator function is configured to output a positive value for a negative acknowledgement or unsuccessful decoding of a current data block and a substantially zero value for a positive acknowledgement or successful decoding of the current data block;
- determining a signal quality offset based on a difference between the first signal quality estimate and the second signal quality estimate;
- and
- determining at least one transmission parameter for at least one subsequent data block based on the first signal quality estimate and the signal quality offset.
Dependencies are inferred from the claim text.