Parallel Data Packet Transceiver Testing Synchronization
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Solution Overview
Problem
Current wireless device test systems face challenges in efficiently establishing readiness of multiple data packet signal transceivers for parallel testing, leading to potential packet leakage and increased testing time, as they struggle to synchronize devices without interrupting signal delivery to non-ready devices.
Innovation Solution
The system employs selective data packet corruption by altering signal characteristics, such as power levels, to differentiate between ready and non-ready devices, ensuring only confirmed devices receive uncorrupted packets while others reject corrupted signals, thereby synchronizing all devices without packet leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If readiness packets are sent to multiple DUTs simultaneously, then testing efficiency is improved through parallel testing, but packet leakage occurs when some DUTs receive packets before they are ready
Solution Approach 1:
The system transmits a readiness packet before the actual test data packets to establish DUT readiness status in advance. This preliminary action allows the system to determine which DUTs are ready to receive test packets, preventing packet leakage while maintaining parallel testing efficiency.
Solution Approach 2:
The system uses acknowledgment packets sent back from DUTs to provide feedback on their readiness status. Based on this feedback, the testing system can control whether to transmit test data packets to each DUT, ensuring reliable packet reception control while maintaining high testing productivity through parallel operation.
2Reliability
If the system waits for all DUTs to be ready before sending test packets, then packet leakage is prevented, but testing time increases significantly
Solution Approach 1:
The readiness packet is sent in advance to all DUTs simultaneously, allowing them to prepare independently at different rates. This eliminates the need to wait for all DUTs to be ready before initiating parallel testing, significantly reducing testing time while maintaining reliable packet reception control through subsequent acknowledgment verification.
Solution Approach 2:
The testing process is segmented into distinct phases: a readiness establishment phase where all DUTs receive readiness packets simultaneously, and a data transmission phase where packets are sent only to ready DUTs based on acknowledgment feedback. This segmentation allows parallel processing of readiness while maintaining controlled data transmission, resolving the time-reliability contradiction.
3Reliability
If readiness packets are halted for some DUTs while continuing to others, then packet leakage is prevented, but system complexity increases due to individual DUT control requirements
Solution Approach 1:
The readiness packet serves multiple functions: it acts as both a readiness inquiry and a synchronization signal for all DUTs. This universal packet type simplifies the control system by eliminating the need for complex individual control mechanisms, while still allowing the system to differentiate between ready and non-ready DUTs through acknowledgment feedback.
Solution Approach 2:
Each DUT autonomously determines its own readiness status and sends acknowledgment packets accordingly. This self-service approach reduces control system complexity by eliminating the need for the testing system to actively manage individual DUT states, while maintaining reliable packet reception control through the distributed acknowledgment mechanism.
Data Source
AI summary
System and method for facilitating testing of multiple data packet signal transceivers involving data-packet-signal replication and one or more status signals indicating successful and unsuccessful receptions of confirmation signals. Based upon the one or more status signals, one or more control signals cause the replicated data packet signals to be distributed to the devices under test (DUTs) such that, following successful and unsuccessful receptions of confirmation signals, corresponding replicated data packet signals are caused to fail to conform in part or to conform, respectively, with a predetermined data packet signal standard.