Radio Reflector Control Coefficients Low Rank Approximation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The transmission of control coefficients for dynamically controllable radio reflectors in wireless communication systems introduces significant signaling overhead, which can impair the performance of the system in terms of capacity and throughput.
Innovation Solution
A method is introduced where the first plurality of control coefficients is represented by a second plurality of approximation coefficients for transmission, with the approximation coefficients being organized into groups representing low rank approximations, thereby reducing the signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If control coefficients are transmitted to control radio reflectors dynamically, then coverage and quality of service are improved, but signaling overhead increases substantially
Solution Approach 1:
The patent segments the control coefficients into multiple groups, where each group corresponds to a subset of reflector elements. This segmentation allows the control information to be structured and transmitted in a more efficient manner, reducing the overall signaling overhead while maintaining the ability to dynamically control each reflector element for improved coverage and quality of service.
Solution Approach 2:
The patent changes the parameters of the control coefficients by applying quantization and compression techniques. This transforms the control information into a more compact representation that conveys the essential control data with reduced bit width, thereby lowering the signaling overhead while preserving the dynamic control capability for quality of service enhancement.
2Adaptability or versatility
If control coefficients are transmitted repeatedly for dynamic control, then adaptability to varying channel conditions is improved, but system performance in terms of capacity and throughput is impaired
Solution Approach 1:
The patent performs preliminary compression and quantization of the control coefficients before transmission. This preliminary action reduces the amount of data that needs to be transmitted repeatedly, thereby maintaining the adaptability to varying channel conditions while reducing the impact on system throughput and capacity.
Solution Approach 2:
The patent creates a compressed representation (copy) of the control coefficients that captures the essential control information in a more efficient format. This compressed copy is transmitted instead of the full control coefficient data, enabling repeated transmissions for dynamic adaptation without significantly impacting system throughput.
3Measurement precision
If full precision control coefficients are transmitted, then control accuracy is maintained, but bandwidth and power usage for transmission increase
Solution Approach 1:
The patent changes the precision parameters of the control coefficients through quantization, reducing the number of bits required to represent each coefficient. This parameter change maintains sufficient control accuracy for effective radio reflector control while significantly reducing the transmission power and bandwidth requirements.
Solution Approach 2:
The patent uses a more compact, less precise representation of the control coefficients that is sufficient for the control function but requires much less transmission energy. This approach trades some precision for significantly reduced transmission power and bandwidth, making the system more energy-efficient.
Data Source
AI summary
A first method is disclosed, which is performed in a first node. The method is for controlling a radio reflector of a second node by using a first plurality, N, of control coefficients. The radio reflector comprises reflector elements, and each reflector element is controllable by a respective one of the control coefficients. The method comprises representing the first plurality of control coefficients by a second plurality of approximation coefficients for transmission to the second node, wherein the second plurality is smaller than the first plurality, and wherein the second plurality of approximation coefficients comprises two or more, P, groups of approximation coefficients, each group representing a low rank approximation (LRA) of the first plurality of control coefficients, and each group comprising a respective third plurality, Rp, of collections of approximation coefficients. A second method is also disclosed, which is performed in the second node. The method comprises receiving the second plurality of approximation coefficients from the first node, and determining an estimation of the first plurality of control coefficients based on the second plurality of approximation coefficients. A third method is also disclosed, which is performed in a third node. The method comprises determining one or more parameters associated with the second plurality of approximation coefficients, and providing the one or more determined parameters to the first node. Corresponding computer program product, apparatuses, nodes, system, and signaling message are also disclosed.