MIMO Capability Reporting for Spatio-Temporal Dispersion Handling
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Solution Overview
Problem
Existing multiple-input multiple-output (MIMO) and beamforming transceiver architectures face challenges in efficiently managing spatio-temporal dispersion and channel knowledge, leading to varying performance based on radio channel characteristics, and there is a need for improved methods to inform transceiver nodes about their capabilities.
Innovation Solution
A method for a wireless device or transceiver node with a multi-antenna transmitter and receiver arrangement that dynamically adjusts capability reporting based on spatio-temporal dispersion, including conditions such as overheating and overloading events, to optimize communication performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If digital beamforming is used to handle complex radio channels, then channel handling capability is improved, but processing complexity and power consumption increase
Solution Approach 1:
The patent applies dynamics by making the beamforming architecture configurable and adaptable based on channel conditions. The system can dynamically switch between digital beamforming for complex channels and analog beamforming for simpler channels, optimizing the balance between capability and complexity.
Solution Approach 2:
The patent changes the parameter of beamforming architecture type (analog vs. digital) based on channel characteristics. By adjusting this parameter according to channel complexity, the system achieves high adaptability while controlling processing complexity through selective use of digital beamforming capabilities.
2Productivity
If the number of antennas is increased to improve capacity, then communication capacity is improved, but processing complexity and power consumption increase
Solution Approach 1:
The patent segments the beamforming processing into analog and digital domains. By dividing the processing tasks between analog beamforming (for directional control) and digital beamforming (for channel adaptation), the system can handle multiple antennas with reduced processing complexity compared to full digital beamforming.
Solution Approach 2:
The patent introduces hybrid beamforming as an intermediary architecture between pure analog and pure digital beamforming. This intermediate approach allows the system to manage large numbers of antennas by using analog processing for coarse beam control and digital processing for fine channel adaptation, reducing overall processing complexity.
3Productivity
If capability reporting is made detailed and frequent to optimize performance, then communication performance is improved, but signaling overhead increases
Solution Approach 1:
The patent applies local quality by providing different levels of capability reporting detail based on the specific transceiver architecture and channel conditions. Instead of uniform detailed reporting, the system reports capability information locally adapted to the actual beamforming architecture being used, reducing unnecessary signaling overhead.
Data Source
AI summary
A method for a wireless device, WD, or a transceiver node, TNode, comprising a multi-antenna transmitter and receiver arrangement, the method comprising: receiving a request to transmit a capability report comprising a capability of the multi-antenna transmitter and receiver arrangement; obtaining the requested capability, the requested capability indicative of a first or second spatio-temporal dispersion the WD or TNode is able to manage, the first spatio-temporal dispersion being smaller than the second spatio-temporal dispersion; and transmitting the capability report comprising the obtained capability. Corresponding computer program product, wireless device, and transceiver node are also disclosed.