Adaptive Modulation for 10GBase-T Transceivers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High-speed Ethernet networks face inefficiencies due to the need for extensive circuitry to support multiple protocols and automatic switching to lower data rate protocols when signal quality is below threshold, resulting in slower data transmission than capable.
Innovation Solution
Adaptive modulation method that adjusts the number of un-coded bits in the transmission signal based on signal quality, maintaining a constant transmission symbol rate and reusing circuitry across different data rates without switching protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single transceiver supports all different Ethernet protocols (10GBase-T, 1000Base-T, 100Base-T) with complete processing circuitry for each, then protocol compatibility is improved, but device complexity and circuitry requirements increase significantly
Solution Approach 1:
The patent implements a universal transceiver design where a single transceiver supports multiple Ethernet protocols (10GBase-T, 1000Base-T, 100Base-T) through adaptive modulation techniques. The transceiver uses a common signal processing architecture that can dynamically adjust modulation orders and coding schemes to accommodate different protocols, eliminating the need for separate dedicated circuitry for each protocol while maintaining full protocol compatibility
Solution Approach 2:
The patent changes operational parameters (modulation order, coding rate, symbol rate) to support different Ethernet protocols within a single transceiver. By dynamically adjusting these parameters based on signal quality and protocol requirements, the system achieves multi-protocol support without requiring separate hardware circuits for each protocol, thus reducing device complexity while maintaining versatility
2Reliability
If the system automatically switches to 1000Base-T protocol when signal quality is below 10GBase-T threshold, then transmission reliability is improved, but data transmission rate decreases to one-tenth of the channel capability
Solution Approach 1:
The patent implements dynamic modulation where the transceiver continuously monitors signal quality and adapts the modulation order and coding scheme in real-time. Instead of switching to a completely different protocol with fixed parameters, the system dynamically adjusts the modulation depth and coding rate to maintain optimal data transmission rates while ensuring reliable operation under varying signal conditions
Solution Approach 2:
The patent applies partial modulation schemes where the full 10GBase-T modulation is reduced to lower modulation orders (such as QAM16, QAM64, or PSK8) when signal quality deteriorates, rather than switching to the much slower 1000Base-T protocol. This partial action maintains a significant portion of the original data transmission rate while still ensuring reliable operation, achieving a balance between reliability and productivity
3Reliability
If extensive processing circuitry is implemented to support protocol switching, then transmission reliability under varying signal conditions is improved, but loss of time due to protocol switching and setup increases
Solution Approach 1:
The patent maintains continuous data transmission by implementing adaptive modulation that adjusts parameters on-the-fly without interrupting the data flow. The transceiver continuously monitors signal quality and adjusts modulation/coding schemes in real-time, eliminating the need to stop transmission for protocol switching and re-initialization, thus maintaining continuity of useful action while ensuring reliable transmission under varying conditions
Data Source
AI summary
A device and method of high-speed transmission is disclosed. The method includes computing a signal quality of a received signal, the received signal being transmitted with a modulation order required by a default transmission modulation format. The signal quality is compared with a signal quality threshold required of the default transmission modulation format. If the signal quality is below the signal quality threshold, an indication of a level of signal quality failure is provided to a transmitter. The transmitter sets a number of un-coded bits within the transmission signal based upon the level of signal quality failure.