Hybrid automatic repeat request with feedback dependent bit selection
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsChunlong Bai, Bo Göransson
Life of this patent
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Abstract
A multi-bit HARQ feedback is transmitted by a receiver to a transmitter. The multi-bit feedback is a function of a level of convergence reached by a decoder when the previously transmitted coded data bits were decoded. The transmitter is configured to select a set of coded data bits for a retransmission as a function of the multi-bit feedback. In some embodiments, different redundancy versions of the coded data bits may be selected as a function of the multi-bit feedback. In other embodiments, a bit puncturing or bit repetition pattern may be selected as a function of the multi-bit feedback.
Claims18
A data retransmission method implemented at a receiver, the method comprising:
- receiving, from a transmitter, a first set of coded data bits during a first data transmission;
- decoding the first set of the coded data bits;
- transmitting, to the transmitter, a multi-bit feedback responsive to the first data transmission, wherein the multi-bit feedback indicates a level of convergence reached when decoding the first set of the coded data bits;
- in response to the multi-bit feedback, receiving, from the transmitter, a second set of the coded data bits during a second data transmission;
- combining the first and second sets of the coded data bits;
- and
- decoding the combined first and second sets of the coded data bits.
A receiver for operation in a wireless communication network, the receiver comprising:
- a transceiver configured to receive, from a transmitter, a first set of coded data bits during a first data transmission and a second set of the coded data bits during a second data transmission;
- a decoder configured to decode the first set of coded data bits;
- a controller configured to:
- transmit, to the transmitter via the transceiver, a multi-bit feedback responsive to the first data transmission, wherein the multi-bit feedback indicates a level of convergence reached by the decoder when decoding the first set of the coded data bits;
- and
- combine the first and second sets of the coded data bits;
- and
- wherein the decoder is further configured to decode the combined first and second sets of the coded data bits.
Dependencies are inferred from the claim text.