Methods and apparatus for detecting ACK/NACK bits with dual list-RM decoder and symbol regeneration for LTE PUCCH format 3
OwnerYuanbin Guoinventor
Life of this patent
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Abstract
Methods and apparatus for detecting ACK/NACK bits with dual list-RM decoder and symbol regeneration for PUCCH format 3. In an exemplary embodiment, a method is provided for detected ACK/NACK bits received in a long-term evolution (LTE) physical uplink control channel (PUCCH) Format 3 uplink transmission. The method includes generating Top-M ACK candidates from a descrambled bit stream, regenerating Top-M candidate symbols from the Top-M ACK candidates, calculating channel estimates for the Top-M candidate symbols, combining to the channel estimates generate a combined metric; and searching the combined metric to determine detected ACK bits.
Claims30
A method for identifying network control information during data transmission via a communication network, the method comprising:
- receiving a bit stream from a physical uplink control channel (“PUCCH”) via a communication network;
- descrambling the bit stream to generate a descrambled bit stream containing control information relating to acknowledgement (“ACK”);
- identifying and extracting a first set of bits from the descrambled bit stream when a number of ACK bits is in a first range of bit numbers;
- and
- generating ACK candidates in response to the first set of bits of the descrambled bit stream via a first Reed Muller decoder capable of decoding the first set of bits.
A method for identifying network control information during data transmission via a communication network, the method comprising:
- receiving a bit stream from a physical uplink control channel (“PUCCH”) via a communication network;
- descrambling the bit stream to generate a descrambled bit stream containing control information relating to negative acknowledgement (“NACK”);
- deinterleaving the descrambled bit stream to generate first and second sets of deinterleaved bits when a number of NACK bits is in a range of 12 to 22;
- performing a Reed Muller 24-bit decode on each of the first and second sets of deinterleaved bits to generate first and second sets of decoded bits;
- and
- demapping the first and second sets of decoded bits to generate NACK candidates.
A method for identifying network control information during data transmission via a communication network, the method comprising:
- receiving a bit stream from a physical uplink control channel (“PUCCH”) via a communication network;
- descrambling the bit stream to generate a descrambled bit stream containing control information relating to acknowledgement (“ACK”);
- deinterleaving the descrambled bit stream to generate first and second sets of deinterleaved bits when a number of ACK bits is in a range of 12 to 22;
- performing a Reed Muller 24-bit decode on each of the first and second sets of deinterleaved bits to generate first and second sets of decoded bits;
- and
- demapping the first and second sets of decoded bits to generate ACK candidates.
An apparatus for identifying network control information during data transmission via a communication network, the apparatus comprising:
- means for receiving a bit stream from a physical uplink control channel (“PUCCH”) via a communication network;
- means for descrambling the bit stream to generate a descrambled bit stream containing control information relating to acknowledgement (“ACK”);
- means for identifying and extracting a first set of bits from the descrambled bit stream when a number of ACK bits is in a first range of bit numbers;
- and
- means for generating ACK candidates in response to the first set of bits of the descrambled bit stream via a first Reed Muller decoder capable of decoding the first set of bits.
Dependencies are inferred from the claim text.