Opcode-Programmed Hardware for Deterministic Network Physical-Layer Simulation

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Solution Overview

Problem

Existing software-based modeling tools for communication hardware development are limited by high data rate requirements and nondeterministic behavior, leading to expensive and time-consuming iterations in hardware development.

Innovation Solution

A hardware system using configurable processors, including an opcode processing unit and programmable state machine, programmed with a low-level hardware programming language to model network physical layers and communication channels, enabling deterministic simulation of high-speed data streams.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If software-based modeling tools are used, then ease of operation and programming simplicity are improved, but data rate handling capability and simulation accuracy deteriorate

Engineering Contradiction:
Improveprogramming simplicityVSAvoiddata rate handling capability
Core Design Contradiction:
Ease of operationVSSpeed

Solution Approach 1:

The patent replaces software-based simulation with hardware-based simulation using FPGA (Field-Programmable Gate Array) technology. The hardware simulator directly processes high-speed data streams at the physical layer, eliminating the data rate limitations inherent in software processing while maintaining configurability through hardware description languages.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the fundamental operating parameter from software execution speed (limited by CPU clock rates and processing overhead) to hardware signal processing speed (limited only by the FPGA's parallel processing capability and data path width), enabling simulation of high-speed communication channels that were previously unachievable.

Inventive Principle:
Principle #35Parameter changes

2Adaptability or versatility

If software-based modeling tools are used, then adaptability and flexibility are improved, but simulation determinism and reliability deteriorate

Engineering Contradiction:
ImproveflexibilityVSAvoidsimulation determinism
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The patent substitutes software execution with hardware logic implementation. Hardware circuits execute deterministically without the non-deterministic behaviors of software (such as context switching, memory allocation randomness, and CPU scheduling), providing reliable and repeatable simulation results while maintaining flexibility through configurable hardware architectures.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent segments the simulation system into modular hardware components that can be independently configured and assembled. This modular hardware architecture provides both determinism (each component executes its function deterministically) and flexibility (components can be reconfigured for different simulation scenarios).

Inventive Principle:
Principle #1Segmentation

3Speed

If hardware-based modeling systems are implemented, then data rate handling and simulation speed are improved, but programming complexity and system configuration difficulty worsen

Engineering Contradiction:
Improvesimulation speedVSAvoidprogramming complexity
Core Design Contradiction:
SpeedVSDevice complexity

Solution Approach 1:

The patent replaces conventional software programming with hardware description languages (such as Verilog or VHDL) that are specifically designed for describing hardware logic. These languages provide a more direct mapping between the desired simulation behavior and the actual hardware implementation, reducing the complexity of configuring high-performance hardware systems.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent creates a universal hardware simulation platform that can be configured to simulate various communication channels and physical layer characteristics through a single programmable architecture. This multi-functional hardware system eliminates the need for multiple specialized simulation devices, reducing overall system complexity despite the advanced hardware requirements.

Inventive Principle:
Principle #6Universality (Multi-functionality)

4Manufacturing precision

If multiple hardware iterations are performed, then design optimization and manufacturing precision are improved, but development time and cost worsen

Engineering Contradiction:
Improvedesign optimizationVSAvoiddevelopment time
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The patent enables preliminary action by allowing multiple design iterations and optimizations to be performed on the hardware simulation platform before final hardware fabrication. The reconfigurable nature of the FPGA allows rapid prototyping of different channel models and physical layer characteristics, enabling design optimization without requiring physical hardware fabrication for each iteration.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent creates a virtual copy of the physical layer communication channel through hardware simulation. This virtual model can be rapidly reconfigured to represent different channel conditions and tested extensively before actual hardware is fabricated, eliminating the need for expensive and time-consuming physical hardware iterations while maintaining design optimization precision.

Inventive Principle:
Principle #26Copying

Data Source

PatentUS20250265387A1Configuring custom hardware to operate in configurable operational modes using a scripting language
Publication Date: 2025.08.21 L3HARRIS TECH INC
  • US20250265387A1 patent drawing
  • US20250265387A1 patent drawing
  • US20250265387A1 patent drawing

AI summary

One embodiment illustrated herein includes a hardware system for simulating a network physical layer for communication channels. The hardware system includes a plurality of hardware processors configurable to model a network physical layer and communication channels. The hardware processors include an opcode processing unit. The hardware processors further include a programmable state machine coupled to the opcode processing unit. The programmable state machine is configured to be programmed by the opcode processing unit using a low-level hardware programming language comprising opcodes having waveform processing specific semantics so as to configure the state machine for specific waveforms or specific network physical layer characteristics.