Optical Interconnection System with Electrical Control Packets
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Solution Overview
Problem
Traditional optical interconnection systems face inefficiencies due to the need for frequent optical-to-electrical and electrical-to-optical conversions at each switching node, leading to increased delay and power consumption.
Innovation Solution
The system converts data into optical signal packets with accompanying control packets in electrical form, allowing switching nodes to determine next hops and open optical paths directly, eliminating the need for conversions during transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If optical-to-electrical and electrical-to-optical conversions are performed at each switching node, then routing information can be obtained and routing can be performed, but transmission delay increases and power consumption increases
Solution Approach 1:
The patent segments the data transmission process into control plane and data plane. Control packets (containing routing information) are handled separately from data packets. Control packets are converted to electrical signals for routing information extraction at switching nodes, while data packets remain in optical form and are forwarded without conversion. This segmentation allows routing functionality to be maintained while eliminating unnecessary conversions for data transmission.
Solution Approach 2:
The patent implements preliminary action by extracting routing information from control packets before data packets arrive at switching nodes. Control packets are converted to electrical signals, processed to obtain routing information, and used to set up optical paths in advance. This allows data packets to be forwarded directly over pre-established optical paths without requiring conversion at each node.
2Measurement precision
If optical-to-electrical and electrical-to-optical conversions are performed at each switching node, then routing information can be obtained and routing can be performed, but power consumption increases
Solution Approach 1:
The patent segments the data transmission process into control plane and data plane. Control packets (containing routing information) are handled separately from data packets. Control packets are converted to electrical signals for routing information extraction at switching nodes, while data packets remain in optical form and are forwarded without conversion. This segmentation allows routing functionality to be maintained while eliminating unnecessary conversions for data transmission.
Solution Approach 2:
The patent replaces the mechanical/optical conversion system with a purely optical forwarding system for data packets. Instead of converting data packets to electrical signals for processing and then back to optical signals, the system uses optical switching based on routing information extracted from control packets. This substitution eliminates the energy-consuming conversion processes while maintaining routing capability.
3Productivity
If data is transmitted in optical signal form through multiple switching nodes, then bandwidth is large and power consumption is low, but routing control becomes difficult without electrical signal conversion
Solution Approach 1:
The patent segments the data transmission process into control plane and data plane. Control packets (containing routing information) are handled separately from data packets. Control packets are converted to electrical signals for routing information extraction at switching nodes, while data packets remain in optical form and are forwarded without conversion. This segmentation allows routing functionality to be maintained while eliminating unnecessary conversions for data transmission.
Solution Approach 2:
The patent introduces control packets as intermediaries that carry routing information. These control packets are converted to electrical signals at switching nodes to extract routing information, which is then used to set up optical paths for data packet transmission. The control packets serve as a mediator between the electrical control plane and optical data plane, enabling routing control without requiring conversion of data packets themselves.
Data Source
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Figure 2b~3
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AI summary
Embodiments of the present invention disclose an interconnection system, an apparatus, and a data transmission method. In the interconnection system, to-be-transmitted data is converted into a data packet in an optical signal form for transmission, and a control packet corresponding to the data packet is transmitted in an electrical signal form and includes routing information of the data packet. When the control packet passes through a switching node, the switching node directly determines, according to the routing information in the control packet, a neighboring node that serves as a next hop, and opens, in the switching node, an optical path used to transmit the data packet for transmitting the data packet. Because no optical-to-electrical or electrical-to-optical conversion needs to be performed on the control packet and the data packet during an entire transmission procedure, problems of an extra delay and power consumption caused by electrical-optical-electrical conversion can be reduced, thereby improving data transmission efficiency.