Macro Cell Header Compression for IMA+ Bonding
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Solution Overview
Problem
Existing data compression methods for headers in cell-based or packet-based data transmission are inefficient, particularly in scenarios like IMA+ bonding, where the overhead of numbering information is high and difficult to compress effectively.
Innovation Solution
Combining multiple cells into a macro cell, where the full numbering information of the first cell and deviation information for subsequent cells are stored in a macro header, allowing for efficient compression and easy reconstruction without altering the numbering assignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional header compression methods are used for each cell individually, then implementation is simple, but compression efficiency is poor especially for numbering information in IMA+ bonding scenarios
Solution Approach 1:
The patent combines multiple individual cell headers into a single macro cell header structure. Instead of compressing each cell header separately, the macro header contains a base numbering information field and multiple offset fields that together represent the numbering information for multiple cells. This merging approach achieves better compression efficiency by eliminating redundant numbering information while maintaining the ability to represent sequential cell numbers across multiple cells.
2Loss of substance
If full numbering information is stored for each cell, then numbering integrity is preserved, but transmission overhead increases
Solution Approach 1:
The patent extracts the common base numbering information from multiple cell headers and stores it only once in the macro header. The individual cell-specific numbering information is represented as offsets from this base value. This extraction approach significantly reduces transmission overhead by eliminating redundant numbering information while preserving the complete numbering sequence through the combination of base information and offsets.
3Productivity
If deviation information is used for compression, then bandwidth utilization improves, but reconstruction complexity increases
Solution Approach 1:
The patent segments the numbering information representation into two distinct parts: a base numbering information field that contains the common prefix for multiple cells, and offset fields that contain only the varying portions for each cell. This segmentation allows the receiver to efficiently reconstruct the complete numbering information by combining the base value with each offset, reducing reconstruction complexity compared to storing full numbering information while maintaining high compression efficiency.
Data Source
AI summary
A plurality of cells are combined into a macro cell. In a macro header of the macro cell a full numbering information of a first cell of the plurality of cells is stored. For further cells of the plurality of cells other than the first cell, a deviation information indicating a deviation of a numbering information of the respective further cell from the full numbering information of the first cell or one of the further cells is stored. In some embodiments, additionally the headers of the individual cells are incorporated in the macro header.