Communication techniques applying low-density parity-check code base graph selection
First Claim
1. A method for wireless communications by a user equipment (UE) comprising a processor in electrical communication with a memory, the processor configured to obtain data from the memory in preparation for wireless communications, the method comprising:
- receiving, by a transceiver circuit using one or more antenna elements in electrical communication with the transceiver circuit, control information indicating a modulation and coding scheme (MCS) and resource allocation (RA) for transmission of a codeword;
selecting, by the processor and based on the MCS and the RA, a base graph (BG), from which to derive a low density parity check (LDPC) code for use in decoding the codeword;
receiving, by the transceiver circuit using the one or more antenna elements, the codeword via resources of the RA; and
decoding, by a decoder circuit, the codeword using the LDPC code derived from the selected BG.
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Abstract
Wireless communication methods, systems, and devices capable of utilizing base graphs for error correction techniques. A base graph can be used to derive a low-density parity-check (LDPC) code used for encoding a retransmission of an original transmission in a wireless communication system. An exemplary method generally includes selecting, based on a modulation and coding scheme (MCS) and a resource allocation (RA) for transmitting a codeword, a base graph (BG), from which to derive a low density parity check (LDPC) code for use in encoding data bits in the codeword (e.g., encoding data bits of a bitstream such that some redundant bits are included in the codeword), encoding the data bits to generate the codeword using the LDPC code derived from the selected BG, and transmitting the codeword using the MCS via resources of the RA.
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Citations
20 Claims
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1. A method for wireless communications by a user equipment (UE) comprising a processor in electrical communication with a memory, the processor configured to obtain data from the memory in preparation for wireless communications, the method comprising:
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receiving, by a transceiver circuit using one or more antenna elements in electrical communication with the transceiver circuit, control information indicating a modulation and coding scheme (MCS) and resource allocation (RA) for transmission of a codeword; selecting, by the processor and based on the MCS and the RA, a base graph (BG), from which to derive a low density parity check (LDPC) code for use in decoding the codeword; receiving, by the transceiver circuit using the one or more antenna elements, the codeword via resources of the RA; and decoding, by a decoder circuit, the codeword using the LDPC code derived from the selected BG. - View Dependent Claims (2, 3, 4)
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5. A method for wireless communications by a base station (BS) comprising a processor in electrical communication with a memory, the processor configured to obtain data from the memory in preparation for wireless communications, the method comprising:
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selecting, by the processor and based on a modulation and coding scheme (MCS) and a resource allocation (RA) for transmitting a codeword, a base graph (BG) stored in said memory, from which to derive a low density parity check (LDPC) code for use in encoding data bits; encoding, by an encoder circuit, the data bits to generate the codeword using the LDPC code derived from the selected BG; and transmitting, by a transceiver circuit, the codeword using the MCS via resources of the RA using one or more antenna elements in electrical communication with the transceiver circuit. - View Dependent Claims (6, 7, 8, 9, 10)
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11. An apparatus for wireless communications, comprising:
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a processor configured to; cause the apparatus to receive control information indicating a modulation and coding scheme (MCS) and resource allocation (RA) for transmission of a codeword; select a base graph (BG), from which to derive a low density parity check (LDPC) code for use in decoding the codeword, based on the MCS and the RA; cause the apparatus to receive the codeword via resources of the RA; and decode the codeword using the LDPC code derived from the selected BG; and a memory coupled with the processor. - View Dependent Claims (12, 13, 14)
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15. An apparatus for wireless communications, comprising:
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a processor configured to; select, based on a modulation and coding scheme (MCS) and a resource allocation (RA) for transmitting a codeword, a base graph (BG) from which to derive a low density parity check (LDPC) code for use in encoding data bits in the codeword; encode the data bits to generate the codeword using the LDPC code derived from the selected BG; and cause the apparatus to transmit the codeword using the MCS via resources of the RA; and a memory coupled with the processor. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification