OFDM Resource Segmentation for Multi-FEC and MIMO Tone Mapping
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Solution Overview
Problem
In wireless communication systems using OFDM, efficient resource segmentation is challenging when multiple FEC blocks are employed, as existing methods fail to effectively distribute resources considering the number of MIMO streams and subframe types, leading to complexity in mapping data tones.
Innovation Solution
A method and apparatus for resource segmentation in wireless communication systems that distribute data information bits to FEC blocks based on their size, determining the number of data tones using control information, and mapping these bits into data tones considering the number of data streams, MIMO streams, and subframe types, using a MAC layer unit and resource mapping unit to optimize resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data is transmitted using multiple FEC blocks in OFDM system, then data transmission capacity is improved, but resource segmentation complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the frequency domain resources into multiple resource blocks, each associated with a specific FEC block. This allows data from multiple FEC blocks to be transmitted simultaneously over different frequency resources, thereby improving data transmission capacity while maintaining manageable resource segmentation through systematic allocation rules.
Solution Approach 2:
The patent implements local quality by assigning different resource block allocations to different FEC blocks based on their specific requirements. Each FEC block can have its own resource allocation pattern, allowing optimized resource usage for each data stream while simplifying the overall segmentation management through localized resource assignment.
2Productivity
If resource allocation considers multiple parameters (MIMO streams, subframe types, FEC blocks), then resource utilization efficiency is improved, but mapping complexity increases
Solution Approach 1:
The patent applies dynamics by creating flexible resource allocation mechanisms that can adapt to different MIMO stream configurations, subframe types, and FEC block requirements. The resource mapping is dynamically adjusted based on the number of data streams and subframe characteristics, allowing efficient resource utilization without requiring complex static allocation tables.
Solution Approach 2:
The patent utilizes parameter changes by varying resource block allocations based on changing system conditions such as the number of MIMO streams, subframe types, and FEC block sizes. This allows the system to optimize resource utilization for different operating scenarios while maintaining a relatively simple mapping framework that adapts to parameter variations.
Data Source
AI summary
An apparatus and a method segment an allocated resource in data transmission in a wireless communication system. When a size of transmission data is large, the data information bit is distributed to one or more forward error correction (FEC) blocks with consideration of a size of the data information bit. A number of data tones is determined based on control information with respect to each of the one or more FEC blocks. The data information bit distributed to the one or more FEC blocks is mapped into a data tone with consideration of the number of data tones determined for each of the one or more FEC blocks.