Method and Communications Device for Transmitting Information

Abstract

The disclosure provides a method and a communications device for transmitting information. The method includes: determining a quantity N of padding bits according to a quantity M of effective information bits included in a code block and a quantity L of effective input ports of a polar code encoder, where M and L are positive integers, and N is a difference between L and M; determining input bits that are to be input into the polar code encoder, where the input bits include the M effective information bits and the N padding bits; inputting, according to a mapping relationship between the L effective input ports and the input bits, the input bits into the polar code encoder through the L effective input ports to perform coding, so as to obtain coded bits; and transmitting the coded bits.

What is claimed is: 
     
         1 . A method for transmitting information, comprising:
 obtaining M effective information bits;   determining a quantity N of padding bits according to M comprised in a code block and a quantity L of effective input ports of a polar code encoder, wherein M and L are positive integers, and N is a difference between L and M;   determining a first group of effective input ports used to transmit the M effective information bits and a second group of effective input ports used to transmit the N padding bits according to a mapping relationship where quality of a compound channel corresponding to an effective input port in the first group of effective input ports is better than quality of a compound channel corresponding to an effective input port in the second group of effective input ports;   inputting the M effective information bits to the first group of effective input ports and the N padding bits to the second group of effective input ports to perform polar encoding to obtain coded bits, wherein an order of inputting the M effective information bits is same as an ascending order of port numbers of the first group of effective input ports; and   outputting the coded bits.   
     
     
         2 . The method according to  claim 1 , wherein the quality of the compound channel corresponding to an effective input port in the L effective input ports is represented by at least one of a channel capacity, channel confidence, a bit error rate, or a block error rate. 
     
     
         3 . The method according to  claim 1 , wherein values of the padding bits are 0. 
     
     
         4 . The method according to  claim 1 , wherein before outputting the coded bits, the coded bits are rate matched. 
     
     
         5 . A communications device for transmitting information, comprising:
 at least one processor; and   a non-transitory computer-readable storage medium coupled to the at least one processor and storing programming instructions for execution by the at least one processor, wherein the programming instructions instruct the at least one processor to perform operations comprising:   obtaining M effective information bits;   determining a quantity N of padding bits according to M comprised in a code block and a quantity L of effective input ports of a polar code encoder, wherein M and L are positive integers, and N is a difference between L and M;   determining a first group of effective input ports used to transmit the M effective information bits and a second group of effective input ports used to transmit the N padding bits according to a mapping relationship where quality of a compound channel corresponding to an effective input port in the first group of effective input ports is better than quality of a compound channel corresponding to an effective input port in the second group of effective input ports;   inputting the M effective information bits to the first group of effective input ports and the N padding bits to the second group of effective input ports to perform polar encoding, so as to obtain coded bits, wherein an order of inputting the M effective information bits is same as an ascending order of port numbers of the first group of effective input ports; and   outputting the coded bits.   
     
     
         6 . The communications device according to  claim 5 , wherein the quality of the compound channel corresponding to an effective input port in the L effective input ports is represented by at least one of a channel capacity, channel confidence, a bit error rate, or a block error rate. 
     
     
         7 . The communications device according to  claim 5 , wherein values of the padding bits are 0. 
     
     
         8 . The communications device according to  claim 5 , wherein before outputting the coded bits, the coded bits are rate matched. 
     
     
         9 . A non-transitory storage medium storing computer-executable instructions which, when executed by at least one processor of a communication device, the instructions cause the communication device to:
 obtain M effective information bits;   determine a quantity N of padding bits according to M comprised in a code block and a quantity L of effective input ports of a polar code encoder, wherein M and L are positive integers, and N is a difference between L and M;   determine a first group of effective input ports used to transmit the M effective information bits and a second group of effective input ports used to transmit the N padding bits according to a mapping relationship where quality of a compound channel corresponding to an effective input port in the first group of effective input ports is better than quality of a compound channel corresponding to an effective input port in the second group of effective input ports;   input the M effective information bits to the first group of effective input ports and the N padding bits to the second group of effective input ports to perform polar encoding, so as to obtain coded bits, wherein an order of inputting the M effective information bits is same as an ascending order of port numbers of the first group of effective input ports; and   output the coded bits.   
     
     
         10 . The storage medium according to  claim 9 , wherein the quality of the compound channel corresponding to an effective input port in the L effective input ports is represented by at least one of a channel capacity, channel confidence, a bit error rate, or a block error rate. 
     
     
         11 . The storage medium according to  claim 9 , wherein values of the padding bits are 0. 
     
     
         12 . The storage medium according to  claim 9 , wherein before outputting the coded bits, the coded bits are rate matched.