MLC-MSD HARQ Resource Allocation for 5G Power Efficiency
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G NR, face challenges in optimizing spectral efficiency and reducing power consumption, especially in scenarios like sub-Terahertz systems and millimeter wave communications, where encoding and decoding processes consume significant power and are power-limited.
Innovation Solution
Implementing a multi-level coding (MLC) scheme with multi-stage decoding (MSD), where the highest level is either uncoded or coded with a high-rate low complexity code, allowing dedicated HARQ resources for the lowest level and employing simple ARQ retransmissions for the second level, thereby reducing retransmissions and enhancing link efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If MLC scheme with MSD is implemented, then spectral efficiency is improved, but power consumption increases due to encoding and decoding processes
Solution Approach 1:
The patent segments the MLC scheme into multiple levels (first level and second level) with different coding schemes. The first level uses a first coding scheme while the second level uses a second coding scheme, allowing selective application of complex encoding/decoding operations only where necessary to maintain spectral efficiency while reducing overall power consumption in power-limited scenarios
Solution Approach 2:
Different coding schemes are applied to different levels of the MLC structure based on their specific requirements. The first level and second level can use appropriately tailored coding schemes, applying higher complexity only where it provides the most benefit to spectral efficiency while conserving power in other areas
2Productivity
If dedicated HARQ resources are allocated for lowest level, then link efficiency is improved, but device complexity increases
Solution Approach 1:
The HARQ process is segmented into level-specific operations. Dedicated HARQ resources are allocated for the lowest level (first level) while the second level uses a different approach, reducing overall complexity by avoiding uniform complex HARQ processing across all levels
Solution Approach 2:
Full HARQ resources are applied selectively only to the lowest level where they provide the most benefit to link efficiency, rather than applying equally complex HARQ processing to all levels, thereby reducing overall device complexity while maintaining necessary link efficiency
Data Source
AI summary
The apparatus, which may be a receiving device, is disclosed. The apparatus may receive at least one HARQ retransmission of at least one first bit. The HARQ retransmission may be associated with an MLC scheme including MSD. The MLC scheme may include a plurality of bits with the at least one first bit and at least one second bit. The apparatus may decode the at least one first bit of the MLC scheme based on the at least one HARQ retransmission. The apparatus may determine whether the at least one first bit of the MLC scheme is decoded successfully. The apparatus may decode, upon determining that the at least one first bit of the MLC scheme is decoded successfully, the at least one second bit of the MLC scheme based on at least one ARQ retransmission of the at least one second bit.