Relay System Wavelength Conversion for Optical Latency Reduction
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Solution Overview
Problem
In optical communication networks using time division multiplexing, the transmission time for data with different destinations is prolonged due to the cumulative transmission times, leading to increased latency and potential congestion.
Innovation Solution
A relay system that converts data into optical signals with varying wavelengths based on transmission destinations, allowing for simultaneous transmission on the same optical transmission line without the need for time division multiplexing, thereby reducing overall transmission time and latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If time division multiplexing is used to transmit multiple data pieces with different destinations, then data can be transmitted through the optical transmission line, but the transmission time becomes long due to cumulative transmission times
Solution Approach 1:
The patent segments data transmission by destination address, creating separate wavelength channels for different transmission destinations. Each data piece is assigned a specific wavelength based on its destination, allowing parallel transmission without time division multiplexing. This resolves the contradiction by enabling multiple data pieces to be transmitted simultaneously (reducing total transmission time) while maintaining proper routing through wavelength-based segmentation.
Solution Approach 2:
The patent transitions from time-domain multiplexing to wavelength-domain multiplexing. Instead of transmitting multiple data pieces sequentially in time, the system uses different wavelengths (frequency dimension) to carry multiple data pieces simultaneously through the same optical transmission line. This dimensional change from time to wavelength enables parallel transmission, directly reducing the cumulative transmission time while handling multiple data pieces.
2Productivity
If time division multiplexing is used for data transmission, then transmission can be managed through a single optical transmission line, but latency increases due to sequential transmission
Solution Approach 1:
The patent changes the transmission parameter from time sequencing to wavelength assignment. By assigning different wavelengths to data pieces destined for different destinations, the system enables simultaneous transmission on the same optical line without the sequential delays inherent in time division multiplexing. This parameter change maintains high throughput while dramatically reducing latency by eliminating the wait times between sequential transmissions.
3Loss of time
If wavelength conversion is implemented based on transmission destination, then simultaneous transmission of multiple data pieces is enabled, but device complexity increases due to conversion requirements
Solution Approach 1:
The conversion unit is designed as a multi-functional device that performs wavelength conversion based on destination addressing. Rather than requiring separate conversion devices for each wavelength pair, the universal conversion unit can dynamically convert between any required wavelength combinations based on the destination of each data piece. This universality reduces overall system complexity while enabling the wavelength-division multiplexing functionality needed to shorten transmission time.
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 shortens the transmission time for multiple data sets with different destinations, reduces latency, and avoids congestion by enabling simultaneous transmission, while also eliminating the need for negotiation between devices, thus enhancing data transmission efficiency in optical communication networks.
Implementation Method 1
a conversion unit that converts the data received by the reception unit into an optical signal having a wavelength varying according to a transmission destination
Data Source
AI summary
A relay system relays data transmitted to any one of a plurality of transmission destinations, and includes a reception unit that receives the data, a conversion unit that converts the data received by the reception unit into an optical signal having a wavelength varying according to a transmission destination to which the data is to be transmitted among the plurality of transmission destinations, and an output unit that outputs the optical signal converted by the conversion unit to an optical transmission line.