Modular Wireless Test System Architecture
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Solution Overview
Problem
Traditional wireless data communication test systems face high costs due to low utilization of elements, limited processing power, and inflexibility in supporting evolving protocols, as each line card is designed to handle all necessary functions and must be replaced when new protocols arise, leading to inefficient resource usage and increased complexity.
Innovation Solution
A network equipment test device with modular components, including DUT interface components, hardware and software traffic generation/analysis components, and packet switch interfaces, allows for logical binding and flexible resource allocation, enabling the decoupling of interface and processing capacities, allowing for upgrades without replacing entire line cards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional self-contained line cards are used for testing each DUT interface, then each interface can be tested with dedicated processing capabilities, but the system cost increases and resource utilization decreases due to the need for separate line cards for each interface
Solution Approach 1:
The patent implements a universal line card architecture where a single line card can be configured to test multiple different DUT interfaces through dynamic protocol stack loading. The line card contains a generic processing platform that can load different protocol stacks (e.g., 802.11n, 802.11ac, Ethernet) as needed, allowing one line card to replace multiple specialized line cards and thereby reducing system complexity while maintaining comprehensive testing capability
Solution Approach 2:
The line card employs dynamic reconfiguration capabilities where protocol stacks can be loaded, unloaded, and switched during operation. The processing platform can dynamically adapt its functionality based on the specific DUT interface being tested, enabling flexible resource allocation and improving utilization rates without sacrificing testing reliability
2Reliability
If each line card contains all necessary processing capabilities for its intended interface, then the line card is self-contained and reliable, but upgrading to support new protocols requires replacing the entire line card, increasing cost and reducing flexibility
Solution Approach 1:
The line card architecture segments processing capabilities into modular protocol stacks that can be independently loaded and unloaded. Instead of having fixed hardware for each protocol, the system uses separate software-based protocol stack modules that can be dynamically instantiated based on testing requirements, enabling easy adaptation to new protocols without hardware replacement
Solution Approach 2:
The line card uses software-based protocol stacks that can be configured and loaded with different parameters to support various protocols. By changing the loaded protocol stack software rather than hardware parameters, the system can adapt to new protocols while maintaining the same physical line card infrastructure, thereby improving versatility without compromising processing reliability
3Manufacturing precision
If multiple specialized line cards are deployed to support different protocols, then each protocol can be tested with optimized processing, but resource utilization decreases and system cost increases
Solution Approach 1:
A single universal line card can be configured to test multiple different protocols by loading the appropriate protocol stack software. This universal approach maintains protocol testing accuracy through dedicated software implementations while dramatically improving resource utilization by allowing the same physical hardware resources to be shared across multiple protocol testing scenarios
Solution Approach 2:
The line card maintains protocol stack software in memory and can switch between different protocol configurations without requiring physical reconfiguration or downtime. This continuous readiness allows the system to rapidly switch between testing different protocols, maximizing resource utilization while maintaining testing precision for each protocol
Data Source
AI summary
Systems and methods are disclosed herein to provide improved data communication test systems for the testing of wireless data communication devices and systems. A flexible arrangement of physical layer interfaces, hardware traffic generator/analyzers and software traffic generator/analyzers is disclosed that partitions the data communication test system into interfacing and processing modules. Such a system may offer improved capabilities such as a lower-cost and more efficient test system, a reduction in redundant processing capabilities, and a dynamic balancing of interfaces and processing power.