Method for performing harq using polar code
AssigneeLG Electronics Inc.
InventorsIl-Min KIM, Joonkui AHN, Byounghoon KIM
Life of this patent
Estimating the term…
Abstract
Provided are a method and an apparatus for performing a HARQ based on a polar code in a wireless communication system. The apparatus transmits multiple first output bits, which are generated from multiple first input bits, to a receiver. Upon receiving a retransmission request, the apparatus generates multiple second output bits from multiple second input bits. The apparatus selects multiple third output bits from among the multiple second output bits, and transmits the selected multiple third output bits to the receiver. Bits, which are encoded differently from the multiple first output bits among the multiple second output bits, are preferentially selected as the multiple third output bits.
Claims15
A method for performing a Hybrid Automatic Repeat reQuest (HARQ) based on a polar code, comprising:
- acquiring, by a transmitter, a plurality of first input bits being inputted to a first encoder from a plurality of mother bits having at least one information bit and at least one frozen bit;
- transmitting, by the transmitter to a receiver, a plurality of first output bits being generated from the first input bits by the first encoder;
- receiving, by the transmitter, a re-transmission request for the plurality of mother bits from the receiver;
- acquiring, by the transmitter, a plurality of second input bits being inputted to a second encoder from the plurality of mother bits;
- generating, by the transmitter, a plurality of second output bits being generated from the second input bits by the second encoder;
- selecting, by the transmitter, a plurality of third output bits from the plurality of second output bits;
- and
- transmitting, by the transmitter, the plurality of third output bits to the receiver,
- wherein the plurality of second input bits include at least one information bit being included in the plurality of first input bits, and
- wherein, among the plurality of second output bits, bits being encoded differently from the plurality of first input bits are preferentially selected as the third output bits.
A device for performing a Hybrid Automatic Repeat request (HARQ) based on a polar code, comprising:
- a radio frequency (RF) unit transmitting and receiving radio signals;
- and
- a processor controlling the RF unit and including a first encoder and a second encoder,
- wherein the processor is configured to:
- acquire a plurality of first input bits being inputted to a first encoder from a plurality of mother bits having at least one information bit and at least one frozen bit,
- transmit a plurality of first output bits being generated from the first input bits by the first encoder to a receiver,
- receive a re-transmission request for the plurality of mother bits from the receiver,
- acquire a plurality of second input bits being inputted to a second encoder from the plurality of mother bits,
- generate a plurality of second output bits being generated from the second input bits by the second encoder,
- select a plurality of third output bits from the plurality of second output bits, and
- transmit the plurality of third output bits to the receiver,
- wherein the plurality of second input bits include at least one information bit being included in the plurality of first input bits, and
- wherein, among the plurality of second output bits, bits being encoded differently from the plurality of first input bits are preferentially selected as the third output bits.
Dependencies are inferred from the claim text.