Multi-Transport Block Decoding for URLLC Latency and Reliability
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Solution Overview
Problem
Current 5G mobile communication systems face challenges in reducing transmission latency while maintaining high reliability, particularly in ultra-reliable low-latency communication (URLLC) scenarios where latency must be within 0.5 milliseconds and reliability reaches 99.999% within 1 millisecond.
Innovation Solution
The method involves a terminal device determining and decoding information using multiple transport blocks, allowing for combined decoding of control and data information, which reduces latency by transmitting information across multiple blocks simultaneously and improves reliability through error correction mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional single transport block transmission is used, then device complexity is low, but transmission reliability is insufficient for URLLC requirements
Solution Approach 1:
The patent segments the single transport block into multiple transport blocks (first transport block and second transport block), each carrying different portions or repetitions of the same information. This segmentation enables diversified transmission paths and combines multiple blocks at the receiver to achieve higher reliability while managing complexity through structured segmentation strategies.
Solution Approach 2:
The patent merges multiple transport blocks (first and second transport blocks) at the receiver side through combining operations such as soft combining or chase combining. This merging process integrates information from multiple blocks to improve transmission reliability, effectively combining the benefits of multiple transmissions while managing the overall system complexity.
2Reliability
If retransmission mechanisms are used to improve reliability, then transmission reliability improves, but transmission latency increases
Solution Approach 1:
The patent performs preliminary actions by transmitting multiple transport blocks in parallel or in rapid succession rather than waiting for retransmission requests. The receiver is pre-configured to combine these blocks, eliminating the need for lengthy HARQ retransmission cycles and reducing overall transmission latency while maintaining high reliability.
Solution Approach 2:
The patent ensures continuity of useful action by having the receiver continuously process and combine multiple transport blocks as they arrive, rather than pausing for retransmission protocols. This continuous processing maintains high data flow and reduces idle time, thereby lowering latency while achieving reliable transmission through combining operations.
3Loss of time
If multiple transport blocks are transmitted simultaneously, then transmission latency is reduced, but decoding complexity increases
Solution Approach 1:
The patent segments the transmission into multiple transport blocks with distinct structures and relationships, allowing the receiver to process them through systematic segmentation strategies. By organizing blocks into identifiable patterns (e.g., different redundancy versions or coded portions), the decoding complexity is managed through structured approaches rather than handling completely independent complex decodings.
Solution Approach 2:
The patent employs universal decoding mechanisms that can handle multiple transport blocks through a single integrated decoding process. The receiver uses multi-functional decoding capabilities that work across different block types and configurations, reducing overall decoding complexity by using a unified approach rather than separate specialized decoders for each block.
Data Source
AI summary
This application provides an information transmission method and apparatus. The solution includes: determining, by a terminal device, at least two transport blocks; and decoding, by the terminal device, first information transmitted by using the at least two transport blocks, where the first information includes at least one of control information and data. This solution is applicable to a scenario in which same information or information with a same information source is transmitted by using a plurality of transport blocks.