QSFP to 10GBase-T Cable Assembly Pin Reassignment
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Solution Overview
Problem
QSFP transceiver modules cannot effectively interface with copper 10GBase-T ports having RJ45 connectors due to physical, power, and thermal constraints, limiting high-density data communications.
Innovation Solution
A cable assembly comprising a QSFP transceiver module, 10GBase-T ports with RJ45 connectors, and cables that enable data channels for 10 G and 40 G communications, with enhanced power delivery through reassignment of transceiver signal pins to support power-intensive components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If QSFP transceiver modules use standard MPO parallel optical connectors for high-density applications, then data communication density and speed are improved, but physical constraints and thermal challenges prevent interface with copper 10GBase-T ports
Solution Approach 1:
The patent divides the QSFP transceiver module into separate functional components: the QSFP module itself and the RJ45 connector assembly. This segmentation allows each component to be optimized for its specific function while maintaining overall system compatibility. The QSFP module handles high-density optical connections, while the RJ45 connector provides copper interface capability, resolving the contradiction between density and adaptability.
Solution Approach 2:
The patent introduces an intermediary cable assembly that bridges the QSFP transceiver module and the 10GBase-T port. This cable assembly contains the necessary conversion logic and physical interfaces to enable communication between the optical QSFP connector and copper RJ45 connector, allowing the system to achieve both high-density optical performance and copper interface compatibility.
2Speed
If QSFP transceiver modules operate at 40 G data rates, then communication speed is improved, but power and thermal challenges arise that limit copper port interface capability
Solution Approach 1:
The patent replaces the direct electrical connection mechanism with an optical transmission system. By using optical fibers instead of copper conductors for the high-speed data paths, the system achieves 40 G data rates with significantly reduced power consumption and thermal generation, as optical signals do not suffer from electrical resistance and associated heating.
Solution Approach 2:
The patent changes the fundamental transmission parameter from electrical signals in copper to optical signals in fiber. This parameter change enables higher data rates with lower power consumption, as optical transmission is more efficient at high speeds and generates less heat compared to electrical transmission through copper conductors.
Data Source
AI summary
A Quad Small Form-Factor Pluggable (QSFP) transceiver module is provided that is configured to interface with a QSFP host and to send and receive a plurality of data signals at a data rate of up to forty gigabits per second (40 G). A plurality of 10GBase-T ports with Registered Jack (RJ) 45 connectors is also provided, wherein each of the 10GBase-T ports is configured to interface with a 10GBase-T device to send and receive a plurality of data signals at a data rate of ten gigabits per second (10 G). Cables are configured to interface with the QSFP transceiver module and with corresponding ones of the 10GBase-T ports with the RJ45 connectors. Each of the plurality of cables operates as a data channel for data flow between the QSFP transceiver module and the corresponding ones of the 10GBase-T ports with the RJ45 connectors.