HARQ Feedback Time Separation for Alternate TB Transmission
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Solution Overview
Problem
In machine type communication (MTC), the high failure rate of Hybrid Automatic Repeat reQuest (HARQ) transmissions is caused by the complexity and overlap of processing HARQs due to alternate transmission scheduling of transmission blocks, particularly in devices with weak signal coverage and low processing capacity.
Innovation Solution
The method involves transmitting HARQ feedbacks of different transmission blocks based on distinct time domain resources, reducing overlap and processing complexity by allowing HARQs to be processed sequentially, thereby improving success rates and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If alternate transmission scheduling of multiple TBs is used, then transmission efficiency is improved, but HARQ processing complexity increases and transmission success rate decreases
Solution Approach 1:
The patent segments HARQ processing into separate time domain resources, allocating different time slots for HARQ feedback of different TBs. This segmentation prevents processing overlap and reduces instantaneous complexity while maintaining the benefits of alternate TB transmission scheduling.
Solution Approach 2:
The patent introduces time domain resource separation as an additional dimension for HARQ processing organization. By distributing HARQ feedback across different time slots rather than processing them simultaneously, the system reduces processing complexity while preserving transmission efficiency.
2Productivity
If alternate transmission scheduling of multiple TBs is used, then transmission efficiency is improved, but HARQ transmission success rate decreases
Solution Approach 1:
The patent segments HARQ feedback transmissions into different time domain resources, preventing processing overlaps that cause failures. This segmentation ensures each HARQ can be processed successfully while maintaining the transmission efficiency benefits of alternate TB scheduling.
3Loss of time
If HARQs are transmitted simultaneously for multiple TBs, then processing time is reduced, but transmission success rate decreases due to overlap and complexity
Solution Approach 1:
The patent implements periodic action by scheduling HARQ feedback transmissions in alternating time slots corresponding to the alternate TB transmission pattern. This periodic arrangement in time domain resources prevents overlap while maintaining efficient processing throughput.
Data Source
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AI summary
The embodiments of the present disclosure relate to a method and apparatus for transmitting HARQ feedback, and a storage medium. The method comprises: for a plurality of different transmission blocks (TBs) that are alternately transmitted, using different time domain resources to transmit HARQ feedback of the different TBs, wherein alternately transmitting the plurality of different TBs comprises: cyclically transmitting TB alternate transmission units until the total number of repeated transmissions configured for each of the TBs is met, wherein the TB alternate transmission units comprise N repeated transmissions of the different TBs, and N is greater than zero and less than the configured total number of repeated transmissions.