Multi-RU Joint Encoding with Interleaving and Tone Mapping
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Solution Overview
Problem
Current wireless communication technologies face challenges in implementing efficient joint encoding schemes with interleavers and tone mappers for multi-RU operations, particularly in achieving optimal encoding and tone mapping across multiple Resource Units (RUs) in next-generation wireless local area networks (WLAN) standards like IEEE 802.11be, where existing solutions are either vendor-specific or limited to same-sized RUs.
Innovation Solution
The proposed solution involves joint encoding schemes with interleavers and tone mappers that process encoded bits on either an individual-RU or aggregate-RU basis, using BCC interleavers and LDPC tone mappers, with parameters defined in the IEEE 802.11ax specification, to enable flexible and efficient multi-RU operations across varying RU sizes and configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If joint encoding schemes are implemented for multi-RU operations, then spectrum utilization and link quality are improved, but device complexity and implementation difficulty increase
Solution Approach 1:
The patent segments the multi-RU encoding process into distinct functional blocks: joint encoding module, interleaving module, and tone mapping module. Each module handles specific tasks independently, allowing complex multi-RU operations to be broken down into manageable segments that can be implemented and maintained separately while achieving improved link quality through coordinated operation.
Solution Approach 2:
The patent designs universal encoding schemes that can handle multiple RU configurations (different sizes, different numbers of RUs) using the same fundamental process. The joint encoder, interleaver, and tone mapper are configured to work with various RU allocations, reducing the need for multiple specialized implementations and thereby managing complexity while maintaining reliability across diverse scenarios.
2Adaptability or versatility
If vendor-specific implementations are used for BCC interleaver and LDPC tone mapper, then implementation flexibility is improved, but standardization and interoperability worsen
Solution Approach 1:
The patent establishes a universal framework where BCC interleavers and LDPC tone mappers are defined with standardized interfaces and parameters that work across different vendor implementations. The scheme specifies how these components should function in multi-RU contexts while allowing vendors to implement the actual algorithms, achieving both standardization for interoperability and flexibility for vendor-specific optimizations.
3Ease of manufacture
If separate processing is used for each RU, then implementation simplicity is improved, but spectrum utilization efficiency worsens
Solution Approach 1:
The patent merges the processing of multiple RUs into a joint encoding framework where multiple RU data streams are encoded together rather than separately. This combining of processing operations allows for better resource allocation and spectrum utilization while maintaining implementation feasibility through modular architecture that builds on simpler single-RU processing concepts.
Data Source
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Figure 3(A)~3(B)
AI summary
A method of joint encoding schemes with interleaver and tone mapper for multiple-resource unit (multi-RU) operation involves performing joint encoding of a plurality of information bits to generate a plurality of encoded bit sequences (1410). The method also involves processing the plurality of encoded bit sequences by interleaving and tone mapping the encoded bit sequences with respect to a plurality of resource units, (RUs, on either or both of an aggregate-RU basis and an individual-RU basis to generate a plurality of processed bit sequences (1420). The method further involves transmitting the plurality of processed bit sequences over the plurality of RUs (1430).