Method and system for dynamic ACK/NACK repetition for robust downlink MAC PDU transmission in LTE
First Claim
Patent Images
1. A method performed by a user equipment to provide acknowledgement (ACK) or negative acknowledgement (NACK) feedback regarding a downlink transmission, the method comprising:
- upon receipt of the downlink transmission;
transmitting, by the user equipment, a first ACK/NACK feedback response corresponding to the downlink transmission in a first subframe using a first cyclic shift, andtransmitting, by the user equipment, a plurality of additional ACK/NACK feedback responses corresponding to the same downlink transmission, each of the plurality of additional ACK/NACK feedback responses corresponding to the same downlink transmission being transmitted in a respective subframe using a respective cyclic shift different from the first cyclic shift used by the first ACK/NACK response corresponding to the same downlink transmission.
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Abstract
A method and apparatus for dynamic acknowledgement repetition for a downlink medium access control packet data unit transmission ‘MAC PDU’ requiring multiple acknowledgements, the method having the steps of: receiving the downlink MAC PDU requiring multiple acknowledgements; and utilizing a differentiating factor and acknowledgement scheme, sending the multiple acknowledgements.
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Citations
14 Claims
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1. A method performed by a user equipment to provide acknowledgement (ACK) or negative acknowledgement (NACK) feedback regarding a downlink transmission, the method comprising:
upon receipt of the downlink transmission; transmitting, by the user equipment, a first ACK/NACK feedback response corresponding to the downlink transmission in a first subframe using a first cyclic shift, and transmitting, by the user equipment, a plurality of additional ACK/NACK feedback responses corresponding to the same downlink transmission, each of the plurality of additional ACK/NACK feedback responses corresponding to the same downlink transmission being transmitted in a respective subframe using a respective cyclic shift different from the first cyclic shift used by the first ACK/NACK response corresponding to the same downlink transmission. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A user equipment comprising:
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a receiver configured to receive a downlink transmission; and a transmitter configured to provide acknowledgement (ACK) or negative acknowledgement (NACK) feedback upon receipt of the downlink transmission by transmitting a first ACK/NACK feedback response corresponding to the downlink transmission in a first subframe using a first cyclic shift, and transmitting a plurality of additional ACK/NACK feedback responses corresponding to the same downlink transmission, each of the plurality of additional ACK responses corresponding to the same downlink transmission being transmitted in a respective subframe using a respective cyclic shift different from the first cyclic shift used by the first ACK/NACK response corresponding to the same downlink transmission. - View Dependent Claims (8, 9, 10)
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11. A method performed by a user equipment for providing acknowledgement (ACK) or a negative acknowledgement (NACK) feedback, the method comprising:
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transmitting, by a transmitter of the user equipment, a first ACK/NACK response corresponding to a downlink transmission, the first ACK/NACK response transmitted in a first subframe using a first cyclic shift; and repeating transmission, by the transmitter of the user equipment, of additional ACK/NACK responses corresponding to the same downlink transmission, each of the plurality of additional ACK/NACK responses corresponding to the same downlink transmission being transmitted in a respective subframe using a respective cyclic shift different from the first cyclic shift used by the first ACK/NACK response corresponding to the same downlink transmission.
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12. A user equipment for providing acknowledgement (ACK) or a negative acknowledgement (NACK) feedback, the user equipment comprising:
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a receiver configured to receive a downlink transmission; and a transmitter configured to transmit a first ACK/NACK response corresponding to the downlink transmission, the first ACK/NACK response transmitted in a first subframe using a first cyclic shift, and repeat transmission of additional ACK/NACK responses corresponding to the same downlink transmission, each of the plurality of additional ACK/NACK responses corresponding to the same downlink transmission being transmitted in a respective subframe using a respective cyclic shift different from the first cyclic shift used by the first ACK/NACK response corresponding to the same downlink transmission.
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13. A method performed by a user equipment to provide acknowledgement (ACK) or negative acknowledgement (NACK) feedback regarding a downlink transmission, the method comprising:
upon receipt of the downlink transmission; transmitting, by the user equipment, a first ACK/NACK feedback response corresponding to the downlink transmission in a first subframe using a first cyclic shift; transmitting, by the user equipment, a second ACK/NACK feedback response corresponding to the same downlink transmission in a second subframe using a second cyclic shift different from the first cyclic shift; and transmitting, by the user equipment, a third ACK/NACK feedback response corresponding to the same downlink transmission in a third subframe using the second cyclic shift, wherein the second ACK/NACK feedback response and third ACK/NACK feedback response are repetitions of the first ACK/NACK response.
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14. A user equipment, comprising:
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a receiver configured to receive a downlink transmission; and a transmitter configured to provide acknowledgement (ACK) or negative acknowledgement (NACK) feedback upon receipt of the downlink transmission by transmitting a first ACK/NACK feedback response corresponding to the downlink transmission in a first subframe using a first cyclic shift, transmitting a second ACK/NACK feedback response corresponding to the same downlink transmission in a second subframe using a second cyclic shift different from the first cyclic shift, and transmitting a third ACK/NACK feedback response corresponding to the same downlink transmission in a third subframe using the second cyclic shift, wherein the second ACK/NACK feedback response and third ACK/NACK feedback response are repetitions of the first ACK/NACK response.
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Specification