Patent ID: 11936476
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 4:
5. The method according to claim 4, further comprising:
when retransmission is required after sending the M second code blocks, mapping the Q information bit subblocks of each information bit block from a binary field to 2w number system field to obtain the M mapped information bit blocks [ā1, ā2, . . . , āQ], wherein each āq is a information bit subblock in the a mapped information bit block, each āq is a sequence whose length is K/wQ, and w is a positive integer greater than 1;
converting Q information bit subblocks of each mapped information bit block, wherein Q information bit subblocks of the each mapped information bit block and the converted corresponding Q information bit subblocks meet the following relationship:

[Ān,1,Ān,2, . . . ,Ān,Q]=[ā1,ā2, . . . ,āQ]*Hn, wherein

each Ān,q is a corresponding information bit subblock after a corresponding āq is converted, Hn is a universal decoding matrix (UDM) of K/w×K/w in the 2w number system field, and n indicates an nth times of transmission;
performing reverse mapping on [Ān,1, Ān,2, . . . , Ān,Q] to obtain a corresponding information bit block [Ān,1, Ān,2, . . . , Ān,Q] after [Ān,1, Ān,2, . . . , Ān,Q] is reversely mapped, wherein each An,Q is a binary sequence whose length is K/Q;
placing Q information bit subblocks of each reversely-mapped information bit block into M nth to-be-encoded blocks according to the first order, wherein n meets n∈[1, 2, . . . , N], N is a total quantity of times of transmission performed by the first communication device, and N is a positive integer greater than 3;
separately performing polar code encoding on the M nth to-be-encoded blocks to obtain M nth code blocks; and
sending the M nth code blocks to the second communication device.