Measuring Unit for WLAN Throughput Testing
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Solution Overview
Problem
Existing methods for measuring data throughput in WLAN base stations are influenced by the quality of the return channel, making it difficult to obtain accurate transmission parameter measurements, especially since acknowledgement packets are necessary for calculations, which can interfere with the downlink or uplink path.
Innovation Solution
A measuring unit with a control unit, transmitter, and receiver unit that transmits control-data packets and test-data packets separately, allowing the test-data packets' transmission channel to be disturbed, enabling high-precision throughput measurements independent of control-data packets and simulating various operational scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If acknowledgement packets are transmitted through the same channel as test-data packets to enable throughput calculation, then throughput measurement can be performed, but the measurement accuracy deteriorates because the return channel quality influences the downlink/uplink throughput measurement
Solution Approach 1:
The patent divides the transmission channel into two separate channels: a first transmission channel for control-data packets (including acknowledgements) and a second transmission channel for test-data packets. This segmentation allows the test channel to be disturbed independently to simulate radio conditions without affecting control packet transmission, thereby enabling accurate throughput measurement of the device under test independent of return channel quality.
Solution Approach 2:
The patent introduces a measuring unit as an intermediary system that includes a control unit, transmitter/receiver unit, and evaluation unit. This intermediary handles the separation and management of control and test data streams, allowing independent channel disturbance while maintaining measurement capability through the controlled environment provided by the measuring unit.
2Adaptability or versatility
If the transmission channel is disturbed to simulate operational scenarios, then measurement versatility improves, but the ability to maintain reliable control-data transmission deteriorates
Solution Approach 1:
By segmenting the transmission into separate control and test channels, the patent allows the test channel to be disturbed for scenario simulation while the control channel remains undisturbed, ensuring reliable control-data transmission even under simulated adverse conditions.
Solution Approach 2:
The patent applies different transmission qualities to different channels: the control channel maintains high reliability with minimal disturbance, while the test channel undergoes targeted disturbance to simulate specific operational scenarios. This local differentiation of transmission quality allows versatile testing without compromising control communication.
Data Source
AI summary
A measuring unit for measuring transmission parameters of a device under test, comprising a control unit, a transmitter and receiver unit and an evaluation unit. The transmitter and receiver unit is connected via a first connection to the control unit and via at least one transmission channel to the device under test. The device under test is connected via a second connection to the evaluation unit, wherein, for the measurement of the transmission parameters of the device under test, control-data packets and test-data packets are transmitted separately between the control unit and the evaluation unit, and wherein a transmission channel for the test-data packets can be disturbed in a targeted manner.