Packet encoding and decoding method and apparatus

An electronic device comprising:

• a transceiver;
• and
• at least one processor coupled to the transceiver and configured to control the electronic device to:
• segment information data into a plurality of first packets,
• generate a second packet by adding a packet among the plurality of first packets to bits of cyclic redundancy check (CRC) code for the packet,
• fragment the second packet into a plurality of data blocks,
• generate a plurality of third packets by adding the plurality of data blocks to bits of CRC code for the plurality of data blocks,
• polar code encode each of the plurality of third packets, and
• transmit the plurality of encoded third packets,
• wherein a data block of the plurality of data blocks includes a portion of the information data and the bits of CRC code for the packet, and remaining data blocks of the plurality of data blocks only include the information data.

A system for encoding and decoding information data, the system comprising:

• a transmitter device configured to encode the information data;
• and
• a receiver device configured to decode the encoded information data,
• wherein the transmitter device is further configured to:
• segment the information data into a plurality of first packets,
• generate a second packet by adding a packet among the plurality of first packets to bits of cyclic redundancy check (CRC) code for the packet,
• fragment the second packet into a plurality of data blocks,
• generate a plurality of third packets by adding the plurality of data blocks to bits of CRC code for the plurality of data blocks,
• polar code encode each of the plurality of third packets, and
• transmit the plurality of encoded third packets,
• wherein a data block of the plurality of data blocks includes a portion of the information data and the bits of CRC code for the packet, and remaining data blocks of the plurality of data blocks only include the information data, and
• wherein the receiver device is further configured to:
• receive the plurality of encoded third packets,
• acquire the plurality of data blocks constituting each of the plurality of second packets,
• extract a plurality of codeword candidates corresponding to each of the plurality of data blocks,
• select some of the plurality of codeword candidates in a descending order based on a posterior probability among the plurality of codeword candidates, that a corresponding codeword is a correct codeword for decoding a corresponding data block of the plurality of data blocks,
• combine the selected codeword candidates into a plurality of codeword combinations,
• select a codeword combination having a highest posterior probability and having passed a CRC test without error, among the plurality of codeword combinations, and
• decode the selected codeword combination.