Wireless Device Testing Proxy for Reproducible Network Failures
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Solution Overview
Problem
Existing wireless device testing platforms cannot simulate multiple kinds of network failures in a reproducible way and recreate those errors for multiple wireless devices while connected to a working wireless communication network.
Innovation Solution
A communications protocol proxy system is used to simulate error conditions between a wireless device and a wireless telecommunications network by intercepting and modifying data packets between the wireless device and the network through a proxy system, such as a WebSocket protocol proxy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If standalone testing platforms are used to test wireless devices, then device software modules can be tested in isolation, but network failures cannot be simulated in a working wireless communication network
Solution Approach 1:
A proxy server is introduced as an intermediary component between the wireless device and the network. The proxy server intercepts, modifies, and forwards data packets to simulate various network failure conditions while maintaining the device's connection to the actual network, enabling both realistic network testing and controlled failure simulation simultaneously
Solution Approach 2:
The testing system is segmented into multiple independent components: the standalone testing platform for device control, the proxy server for network simulation, and the wireless device under test. This segmentation allows each component to perform its specialized function while working together to achieve comprehensive testing capabilities
2Manufacturing precision
If a proxy system intercepts and modifies data packets to simulate network failures, then reproducible error conditions can be created, but additional system complexity is introduced
Solution Approach 1:
The proxy server creates copies of actual network data packets and modifies them to introduce error conditions. By working with packet copies rather than altering the original network communication, the system achieves precise error reproduction without permanently affecting network operations or requiring complex modifications to the wireless device
Solution Approach 2:
The proxy server acts as a transparent intermediary that sits between the device and network, handling all packet interception, analysis, modification, and forwarding operations. This centralizes the complexity within the proxy server rather than requiring modifications to the device or network infrastructure
3Adaptability or versatility
If multiple kinds of network failures are simulated in a reproducible way, then comprehensive device testing is enabled, but the testing platform requires advanced packet processing capabilities
Solution Approach 1:
The proxy server implements selective packet processing by analyzing only the necessary portions of data packets to determine applicable test scenarios. Rather than processing every byte of every packet, the system performs partial analysis focused on identifying packet types and applying relevant failure simulations, reducing overall processing demands while maintaining comprehensive testing capability
Data Source
AI summary
Systems and methods are provided for simulating error conditions between a wireless device and a live cellular network. A communications protocol proxy system intercepts, monitors, and modifies the two-way interactive TCP notification traffic between the wireless device and live cellular network without modifications to the live cellular network. Data packets being communicated between the wireless device and the live cellular wireless communication network are analyzed at the communications protocol proxy to determine if a test scenario is applicable to the data packets. The data packets are modified according to the test scenario to simulate an error in communication between the wireless device and live cellular network.