Multi-User Wi-Fi Test Architecture With PCIe Bridge Synchronization
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Solution Overview
Problem
Current Wi-Fi performance test systems face challenges with high implementation costs, limited user capacity, and unreliable multi-user scenarios due to interference conflicts and synchronization failures, which affect throughput measurements.
Innovation Solution
A test apparatus with a multi-user module incorporating a PCIE bridge and terminal interfaces, clock synchronization, and interference modules to manage multiple users, synchronize clocks, and simulate complex interference, enabling robust throughput measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a multi-user module uses 16 Intel ax200 chips combined by a power divider, then the system can support multiple users, but the implementation cost is high and the user capacity is limited
Solution Approach 1:
The system segments the multi-user functionality into multiple independent terminal interfaces (TF0-TF15) that can be individually configured and activated. Each terminal interface represents an independent user channel, allowing the system to support up to 16 users through modular interface segmentation rather than requiring complex chip combinations.
Solution Approach 2:
The test apparatus is designed with universal terminal interfaces that can handle multiple functions including Wi-Fi communication, clock synchronization, and interference simulation. The PCIE bridge and terminal interfaces are configured to support both test mode and normal working mode, providing multi-functional capability that reduces the need for separate dedicated hardware for each function.
2Quantity of substance
If the system increases the number of users in the multi-user module, then user capacity improves, but synchronization failures and interference conflicts increase
Solution Approach 1:
A clock synchronization module is introduced as an intermediary component that mediates timing between multiple terminal interfaces. The synchronization module receives clock signals and distributes synchronized timing information to all terminal interfaces, ensuring that even with 16 users simultaneously active, clock synchronization is maintained and interference conflicts are minimized.
Solution Approach 2:
The system dynamically adjusts the operational state of terminal interfaces based on test requirements. Terminal interfaces can be dynamically enabled or disabled through configuration, allowing the system to optimize performance for different user scenarios. The PCIE bridge dynamically manages resource allocation among active terminals, ensuring stable operation as user capacity scales.
3Device complexity
If terminal interfaces are connected directly to the processing module, then communication is simple, but the system cannot support a large number of users
Solution Approach 1:
The system adds a spatial dimension to the connection architecture by implementing a hierarchical structure. Instead of direct one-to-one connections between processing module and terminals, the PCIE bridge introduces a intermediate layer that organizes terminal interfaces in a structured array (TF0-TF15). This dimensional organization allows multiple terminals to be managed through a unified bridge interface, scaling user capacity without proportionally increasing connection complexity.
Data Source
AI summary
A performance test method and a test apparatus includes a multi-user module, where the multi-user module includes a processing module, a PCIE bridge, and a plurality of terminal interfaces. The PCIE bridge provides for communication between the processing module and each of the plurality of terminal interfaces, one end of the PCIE bridge being connected to the processing module, and the PCIE bridge includes a plurality of branch nodes. Each of the plurality of branch nodes is connected to a corresponding one of the plurality of terminal interfaces in a one-to-one correspondence, and each of the plurality of terminal interfaces may be connected to a corresponding one of the plurality of auxiliary terminals in a one-to-one correspondence.