Base Station Testing System With Merged Channel Emulator

The patent merges multiple channel emulators into a single integrated channel emulator that can handle multiple mobile terminals simultaneously. This is achieved by implementing a unified architecture where multiple virtual channels are created within a single emulator instance, allowing accurate emulation of multiple terminals without requiring separate physical emulators for each terminal, thus reducing system complexity while maintaining emulation accuracy.

The channel emulator is designed with multi-functionality to serve multiple mobile terminals through a single device. The emulator implements universal channel modeling capabilities that can dynamically configure and switch between different channel conditions for multiple terminals, enabling one emulator to perform the work of multiple separate emulators while maintaining the accuracy needed for testing base stations under various propagation conditions.

Multiple channel emulation functions are merged into a single calculation engine that processes all mobile terminals concurrently. The patent implements a unified mathematical model that computes channel responses for multiple terminals using shared computational resources, avoiding the redundant calculations that would occur if separate emulators were used for each terminal.

The patent transitions from individual terminal processing to a multi-dimensional approach where channel emulations are performed in the frequency domain using FFT-based methods. By moving calculations to the frequency domain and utilizing efficient transform algorithms, the system can handle multiple terminals with reduced computational complexity compared to time-domain processing of each terminal separately.

The channel emulator implements continuous processing of multiple mobile terminals simultaneously rather than sequentially processing each terminal. The unified emulator maintains continuous channel state information for all terminals and updates channel responses in real-time for all users in parallel, ensuring that testing can proceed efficiently without interruptions or sequential delays while preserving accurate channel simulation for each terminal.

The patent employs frequency-domain processing using Fast Fourier Transform techniques to accelerate channel emulation calculations. By transforming the channel impulse responses to the frequency domain, the system can perform efficient element-wise multiplications for multiple terminals and then transform back to time domain, significantly reducing the computational burden and improving testing efficiency while maintaining accurate channel simulation.