Coding Scheme Indication for Polar and LDPC Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In 5G mobile communications, particularly in the URLLC scenario, there is a need for aligning channel coding schemes between the transmit and receive ends to meet stringent reliability and latency requirements, which is currently not adequately addressed.
Innovation Solution
A method and device for indicating coding schemes, such as polar or LDPC, by using pilot sequences or physical resource locations, allowing devices to dynamically or semi-statically indicate the coding schemes, ensuring correct decoding and encoding processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple coding schemes (polar code and LDPC code) are introduced to meet different URLLC requirements, then the adaptability and reliability are improved, but the complexity of aligning coding schemes between transmit and receive ends increases
Solution Approach 1:
The patent introduces an intermediary indicator (such as a specific sequence or signal) that mediates between the transmit end and receive end to convey coding scheme information. This intermediary element enables automatic alignment without complex negotiation protocols, resolving the contradiction by providing a simple mechanism to select from multiple coding schemes.
Solution Approach 2:
The patent establishes preliminary agreements on mapping relationships between indicators and coding schemes before actual communication occurs. This preliminary configuration allows both ends to automatically determine the coding scheme without real-time negotiation, reducing alignment complexity while maintaining adaptability.
2Productivity
If coding scheme indication is made dynamic to meet changing URLLC requirements, then the responsiveness and reliability are improved, but the signaling overhead and processing complexity increase
Solution Approach 1:
The patent extracts the coding scheme indication from complex signaling protocols and embeds it in dedicated, simple indicators such as specific sequences or signal fields. This extraction simplifies the indication mechanism while enabling dynamic coding scheme selection, resolving the contradiction between responsiveness and processing complexity.
Solution Approach 2:
The patent changes the parameter representation of coding scheme indications from detailed descriptive signals to compact numerical or sequence-based indicators. This parameter transformation reduces signaling overhead and processing complexity while maintaining the ability to dynamically indicate different coding schemes.
Data Source
Figure 1A~1B
Figure 2
Figure 3
AI summary
Embodiments of this application provide a coding scheme indication method and device. The method includes: obtaining, by a first device, a coding scheme indication, where the coding scheme indication is used to indicate a coding scheme of first data and/or a coding scheme of second data, the first data is data sent by the first device to a second device, the coding scheme of the first data is a polar coding scheme or a low-density parity-check LDPC coding scheme, the second data is data sent by the second device to the first device, and the coding scheme of the second data is a polar coding scheme or an LDPC coding scheme; and sending, by the first device, the coding scheme indication to the second device. The embodiments of this application provide a method for aligning channel coding schemes at a receive end and a transmit end in a hybrid coding case.