Optical Data Communication System Eliminating Protocol Overhead
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Solution Overview
Problem
Current data communication systems using RDMA technology face challenges in achieving high reliability and low latency due to signal loss and processing latency caused by encapsulating data signals with protocols like IP, Ethernet, or InfiniBand.
Innovation Solution
A data communication system that directly connects computing apparatuses via a dedicated optical path with error correction, eliminating upper protocols and using direct memory access or remote direct memory access to transfer data through an optical path, thereby reducing packet loss and latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data signals are encapsulated by IP, Ethernet, or InfiniBand protocols to suppress signal loss, then reliability is improved, but processing latency increases
Solution Approach 1:
The patent extracts and removes the upper protocol layers (IP, Ethernet, InfiniBand) from the data communication path, keeping only the essential error correction functions. This eliminates the protocol overhead and processing latency while maintaining the necessary reliability through targeted error correction mechanisms in the optical path.
Solution Approach 2:
The patent changes the communication parameter from protocol-encapsulated packets to raw optical signals with embedded error correction. By transitioning from layered protocol processing to direct optical transmission with FEC, the system achieves lower latency while maintaining reliability through parameter optimization in the optical domain.
2Reliability
If upper protocols are used for data communication, then signal loss is reduced, but device complexity increases
Solution Approach 1:
The patent extracts the essential error correction functionality from the complex protocol stack and implements it directly in the optical communication path. This removes the need for multiple protocol processing layers while maintaining signal loss protection through streamlined error correction mechanisms.
3Loss of time
If dedicated optical path with error correction is used directly, then processing latency is reduced, but reliability may be compromised without proper error correction
Solution Approach 1:
The patent implements error correction codes (FEC) in advance within the optical path to cushion against potential signal errors. This proactive error correction mechanism protects data integrity before errors can occur, maintaining reliability without requiring retransmission protocols that would increase latency.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables highly reliable and low-latency data transfer between computing apparatuses by eliminating protocol overhead and using error correction to minimize packet loss, resulting in improved bit error rates and reduced processing latency.
Implementation Method 1
directly connects two computing apparatuses via a dedicated optical path for optical communication
Implementation Method 2
optical path for optical communication having an error correction function
Data Source
AI summary
An object of the present disclosure is to provide a data communication system, a computing apparatus, a data communication method, and a program, which are capable of highly reliable data transfer with low latency between computing apparatuses. The present disclosure achieves a highly reliable communication path by directly connecting computing apparatuses via an optical path and transmitting data through the optical path. Further, the present disclosure uses the optical path to achieve RDAM over wavelength transmission in which existing RDMA-enabled protocol stacks such as InfiniBand and TCP/IP/Ether are eliminated. The present disclosure eliminates the protocol stacks, enabling transfer with lower latency than in a case of “simply performing RDMA transmission over the wavelength path”.