Multi-Link Wireless Channel Sounder for MIMO Measurement
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Solution Overview
Problem
Conventional wireless channel sounders are inefficient and costly when measuring multiple links in complex mobile communication networks, requiring repeated measurements across various environments and lacking the precision and reliability needed for next-generation MIMO antenna systems.
Innovation Solution
A multi-link wireless channel sounder with a MIMO antenna unit, transmitter and receiver signal processing units, and a control unit that can switch between TX and RX modes, allowing simultaneous measurement of multiple wireless channels and reducing the time and cost of data collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional channel sounders perform wireless channel measurement for each link separately, then measurement precision can be maintained, but measurement time and cost increase significantly
Solution Approach 1:
The patent combines multiple wireless channel measurements into a single simultaneous operation by measuring multiple links (BS-MS, RS-MS, MS-MS) at the same time using the multi-link channel sounder, thereby reducing total measurement time while maintaining precision through comprehensive data collection
Solution Approach 2:
The channel sounder is designed with multi-functionality to measure different types of wireless channels (downlink, uplink, sidelink) and operate in multiple modes (TX mode, RX mode, full-duplex mode), allowing a single device to perform various measurement tasks that would otherwise require multiple separate measurements
2Reliability
If conventional channel sounders measure each link separately, then measurement reliability is maintained, but the complexity and cost of data collection increase
Solution Approach 1:
The patent merges multiple measurement operations into a single coordinated measurement process where the channel sounder simultaneously measures multiple links and stores comprehensive data, reducing the complexity of managing multiple separate measurement systems while maintaining reliable channel modeling through complete data acquisition
Solution Approach 2:
The channel sounder uses MIMO antennas to create multiple parallel measurement paths that copy the channel characteristics of different links simultaneously, allowing reliable measurement of complex mobile communication networks without requiring separate measurement systems for each link
3Ease of operation
If conventional channel sounders are used in complex mobile communication networks, then ease of operation is maintained, but the ability to measure all links is limited
Solution Approach 1:
The channel sounder is designed with multi-functionality to measure different types of wireless channels (downlink, uplink, sidelink) and operate in multiple modes (TX mode, RX mode, full-duplex mode), allowing a single device to perform various measurement tasks that would otherwise require multiple separate measurements
Solution Approach 2:
The channel sounder dynamically switches between different operation modes (TX mode, RX mode, full-duplex mode) depending on the measurement requirements, enabling flexible adaptation to complex mobile communication network scenarios while maintaining ease of operation through automated mode selection
Data Source
AI summary
A multi-link wireless channel sounder is provided. The multi-link wireless channel sounder includes a multi-input multi-output (MIMO) antenna unit, a transmitter (TX) signal processing unit configured to transmit via the MIMO antennas one or more TX wireless channel signals to be transmitted via a wireless channel, a receiver (RX) signal processing unit configured to receive and process one or more RX wireless channel signals that are received from multiple links via the MIMO antenna unit, and a control unit configured to receive an operation mode selection signal that indicates a TX mode or an RX mode from a user and to control the TX signal processing unit or the RX signal processing unit to operate selectively in accordance with the operation mode selection signal.