Methods of receiving MIMO transmissions and related devices
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsSairamesh Nammi, Cagatay Konuskan, Namir Lidian
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Abstract
A method of operating a terminal in a radio access network may include receiving a transmission of first and second data blocks over respective first and second multiple-input-multiple-output (MIMO) layers during a transmission time interval (TTI). Respective first and second demodulated codewords may be generated corresponding to the transmission of the first and second data blocks, and the first and second demodulated codewords may be decoded. Responsive to failure decoding the first demodulated codeword and success decoding the second demodulated codeword, a negative acknowledgement may be transmitted indicating failure receiving the first and second data blocks. Related terminals are also discussed.
Claims18
A method of operating a terminal in a radio access network:
- receiving a transmission of first and second data blocks over respective first and second multiple-input-multiple-output, MIMO, layers during a first transmission time interval, TTI;
- generating respective first and second demodulated codewords corresponding to the transmission of the first and second data blocks;
- decoding the first and second demodulated codewords;
- responsive to failure decoding the first demodulated codeword and success decoding the second demodulated codeword, transmitting a negative acknowledgement indicating failure receiving the first and second data blocks;
- after transmitting the negative acknowledgment, receiving a retransmission of the first and second data blocks over the respective first and second MIMO layers during a second transmission time interval;
- reducing interference of the retransmission responsive to the second demodulated codeword;
- responsive to reducing the interference of the retransmission, generating a third demodulated codeword corresponding to the retransmission of the first data block;
- and
- decoding the third demodulated codeword.
A terminal operating in a radio access network, the terminal comprising:
- a transceiver configured to transmit and/or receive communications over a channel;
- and
- a processor coupled to the transceiver, wherein the processor is configured to:
- receive a transmission of first and second data blocks over respective first and second multiple-input-multiple-output layers through the transceiver during a first transmission time interval,
- generate respective first and second demodulated codewords corresponding to the transmission of the first and second data blocks,
- decode the first and second demodulated codewords,
- transmit a negative acknowledgement through the transceiver indicating failure receiving the first and second data blocks responsive to failure decoding the first demodulated codeword and success decoding the second demodulated codeword,
- receive a retransmission of the first and second data blocks over the respective first and second MIMO layers during a second transmission time interval after transmitting the negative acknowledgment,
- reduce interference of the retransmission responsive to the second demodulated codeword,
- generate a third demodulated codeword corresponding to the retransmission of the first data block responsive to reducing the interference of the retransmission, and
- decode the third demodulated codeword.
Dependencies are inferred from the claim text.