Method and apparatus for performing HARQ on basis of polar code
AssigneeLG Electronics Inc.
InventorsJoonkui Ahn, Bonghoe Kim, Kijun Kim, Byounghoon Kim, Seunggye Hwang
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Abstract
Provided are a method and an apparatus for performing a HARQ on the basis of a polar code. The apparatus generates a response bit to a transport block received by a receiver. The apparatus generates a codeword by encoding predefined information bits with a polar code. The apparatus transmits all or some bits of the codeword to the receiver over a physical channel. The response bit is located at a bit having a higher reliability among the predefined information bits. The size of the codeword is determined by a value which supports the minimum coding rate on the basis of the number of the predefined information bits.
Claims7
A method of performing hybrid automatic repeat request (HARQ) based on a polar code, the method comprising:
- generating, by a transmitter, response bits for a transport block received from a receiver;
- generating, by the transmitter, a codeword by encoding a predefined information bit with the polar code;
- and
- transmitting, by the transmitter, all or some bits of the codeword to the receiver through a physical channel,
- wherein the response bits are located at bits having high reliability among the predefined information bits,
- wherein a size of the codeword is determined to a value which supports a minimum code rate based on a number of the predefined information bits, and
- wherein, based on an amount of a radio resource used in transmission of the physical channel being variable, a number of all or some bits of the codeword is determined as below:
- (a number of the response bits)/(a code rate of the physical channel).
A transmitter performing hybrid automatic repeat request (HARQ) based on a polar code, the transmitter comprising:
- a radio frequency (RF) unit that transmits and receives a radio signal;
- and
- a processor controlling the RF unit, wherein the processor is configured to:
- generate response bits for a transport block received from a receiver;
- generate a codeword by encoding a predefined information bit with the polar code;
- and
- transmit all or some bits of the codeword to the receiver through a physical channel,
- wherein the response bits are located at bits having high reliability among the predefined information bits,
- wherein a size of the codeword is determined to a value which supports a minimum code rate based on a number of the predefined information bits, and
- wherein, based on an amount of a radio resource used in transmission of the physical channel being variable, a number of all or some bits of the codeword is determined as below:
- (a number of the response bits)/(a code rate of the physical channel).
Dependencies are inferred from the claim text.