MIMO Codeword-to-Layer Mapping for Balanced Code Block Distribution
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Solution Overview
Problem
Current MIMO systems face challenges in efficiently decoding data streams in wireless communication networks, particularly in determining the optimal decoding order for data streams, which affects performance.
Innovation Solution
A mobile station equipped with a controller that maps codewords to multiple layers, allowing for the generation of a specific number of code blocks equal to an integer multiple of layers, enabling efficient codeword-to-layer mapping and improved decoding performance through optimized data stream distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If code blocks are generated without ensuring integer multiple relationship with number of layers, then the mapping process is simpler, but decoding performance deteriorates due to unequal distribution of code blocks across layers
Solution Approach 1:
The transport block is segmented into a specific number of code blocks determined by the formula Ncb = k × NL, where NL is the number of layers and k is a positive integer. This segmentation ensures that the total number of code blocks is an integer multiple of the number of layers, enabling equal distribution of code blocks across all layers during the mapping process, which improves decoding performance while maintaining structured organization
Solution Approach 2:
The patent changes the parameter of code block quantity from an arbitrary value to a specific mathematical relationship (integer multiple of layer count). By defining Ncb = k × NL, the system transforms the code block generation into a parameter-controlled process where the number of code blocks adapts to the number of layers, ensuring optimal distribution and decoding performance across different MIMO configurations
2Productivity
If data streams are distributed unevenly across layers, then the mapping process is faster, but overall transmission efficiency deteriorates due to suboptimal decoding order
Solution Approach 1:
The patent applies equipotentiality by ensuring that each layer receives an equal number of code blocks. The code blocks are distributed uniformly across NL layers, creating an equipotential distribution where no layer has a disadvantageous position. This equal distribution optimizes the decoding order and improves overall transmission efficiency by preventing bottlenecks at any specific layer
Data Source
AI summary
A mobile station capable of communicating via an uplink transmission to at least one base station in a Multiple Input Multiple Output wireless network can map codewords to a plurality of layers. The mobile station includes a plurality of transmit antenna and a controller coupled to the plurality of transmit antenna. The controller is configured to map at least one codeword to a plurality of layers. The codeword includes a plurality of code blocks. The controller is configured to generate the plurality of code blocks from a transport block such that the number of code blocks generated correspond to an integer multiple of a number the plurality of layers.