Polarization Coding for 5G DCI Transmission
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Solution Overview
Problem
The existing coding and decoding methods for 5G communications, particularly in LTE systems, suffer from poor performance when separately coding group common DCI and UE-specific DCI, leading to inefficient data transmission and reception.
Innovation Solution
A method that involves performing polarization coding on first and second to-be-coded information, where the second coded information includes the first coded information with specific bit sequence number differences, allowing for combined decoding and improved performance by utilizing the same information bits across different channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If group common DCI and UE-specific DCI are separately coded, then coding flexibility is maintained, but coding and decoding performance deteriorates
Solution Approach 1:
The patent merges the coding processes of group common DCI and UE-specific DCI by constructing the second coded information to include the first coded information. Specifically, the second coded information has a bit sequence length of 2M where the first M bits correspond to the first coded information and the remaining M bits correspond to the second coded information, enabling combined decoding that improves performance while maintaining flexibility
2Reliability
If the same information bits are used across different channels, then decoding performance improves, but bit sequence number consistency becomes critical
Solution Approach 1:
The patent applies preliminary action by pre-establishing the bit sequence number mapping relationships before decoding. The second coded information is constructed with a specific structure where the first M bits are the first coded information and the remaining M bits are the second coded information, with bit sequence numbers arranged in ascending order, enabling consistent decoding without requiring complex real-time alignment
Data Source
AI summary
This application provides a coding and decoding method and apparatus. The method includes: performing polarization coding on first to-be-coded information, to obtain first coded information with a bit sequence length of M, where M is a positive integer; sending the first coded information on a first channel corresponding to the first to-be-coded information; performing polarization coding on second to-be-coded information, to obtain second coded information with a bit sequence length of 2M, where the second to-be-coded information includes the first to-be-coded information, and differences between sequence numbers of information bits corresponding to the first to-be-coded information and sequence numbers of information bits at (M+1)th to 2Mth bit positions in information bits corresponding to the second to-be-coded information are sequentially M in ascending order of sequence numbers.