ATM Cell Reassembly Using Circular Buffer and Parallel Processing
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Solution Overview
Problem
The segmentation and reassembly of ATM data in high-speed networks requires significant processing resources and is difficult to perform in real-time, making it challenging for testing, troubleshooting, and gathering statistics.
Innovation Solution
A system utilizing a circular buffer and parallel processing elements to analyze ATM cells and reassemble AAL2 and AAL5 cells in real-time, implemented using a combination of hardware and software, primarily executed in a field programmable gate array (FPGA).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional segmentation and reassembly methods are used for ATM data, then processing can be performed, but significant processing resources are required and real-time processing becomes difficult
Solution Approach 1:
The patent divides the segmentation and reassembly process into separate functional modules: a segmentation module that operates on incoming ATM cells and a reassembly module that processes segmented data. This modular segmentation allows each module to be optimized independently, improving overall processing speed while reducing the complexity burden on any single component.
Solution Approach 2:
The patent implements preliminary segmentation of ATM cells before the main reassembly process. By pre-segmenting the data into manageable units and storing them in a circular buffer, the system prepares the data in advance, enabling faster real-time reassembly without requiring significant processing resources during the actual reassembly operation.
2Loss of time
If segmentation and reassembly is performed traditionally, then data can be processed, but it is difficult to perform in real-time for testing and troubleshooting
Solution Approach 1:
The patent employs a circular buffer to continuously store segmented ATM data blocks, enabling the reassembly process to continue without interruption. The circular buffer maintains a continuous stream of prepared data blocks, allowing the reassembly module to operate continuously at high speed, thus achieving real-time processing capability for testing and troubleshooting.
Solution Approach 2:
The circular buffer serves as an intermediary between the segmentation module and the reassembly module. It decouples the two processes, allowing segmentation to occur independently in the background while reassembly operates on pre-prepared data. This intermediary mechanism enables real-time processing by eliminating the bottleneck of sequential processing.
Data Source
AI summary
A system for reassembling asynchronous transfer mode (ATM) data in real time is disclosed. In one embodiment, the system for reassembling ATM data in real time comprises a circular buffer for storing ATM data, the ATM data comprising information divided into cells, and a plurality of parallel processing elements configured to analyze the ATM cells and determine a cell type, wherein ATM adaptation layer (AAL) 2 cells and AAL 5 cells are reassembled in real-time.