5G Control Plane Windowing for Beamforming Weight Bandwidth
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Solution Overview
Problem
In massive MIMO networks, the amount of beamforming weight parameters exceeds the allocated bandwidth for control plane data, leading to increased processing demands and latency, which existing solutions fail to adequately address.
Innovation Solution
A dedicated bandwidth slot is allocated at the end of a transmission window for beamforming weights, extending the control plane transmission window to reduce processing power demands and latency by optimizing the relationship between control and user plane windows.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If control data and user data share the same bandwidth allocation, then bandwidth utilization is efficient, but control data transmission latency increases and processing demands increase
Solution Approach 1:
The patent segments the transmission medium into separate control plane and user plane windows within the same timeslot. Control data (including beamforming weights) is transmitted in dedicated control plane windows, while user data is transmitted in user plane windows. This segmentation allows control data to be prioritized and transmitted without being blocked by user data, reducing control data latency while maintaining overall bandwidth utilization.
Solution Approach 2:
The patent introduces a temporal dimension to bandwidth allocation by creating overlapping control and user plane windows in the time domain. Instead of allocating separate frequency bands, the system uses time-division multiplexing with overlapping windows, where control plane data can be transmitted in the gaps between user data transmissions within the same timeslot structure.
2Loss of time
If beamforming weight parameters are transmitted with high priority, then processing latency is reduced, but peak throughput increases requiring additional hardware processing power
Solution Approach 1:
The patent applies local quality by allocating different window sizes and priorities to different types of control data. Beamforming weight parameters are transmitted in larger, dedicated control plane windows with higher priority, while other control data uses standard allocation. This localized optimization ensures that the specific requirement for low-latency beamforming weight transmission is met without applying high priority to all control data, thereby limiting peak throughput increases.
Solution Approach 2:
The patent implements dynamic window sizing where the control plane window size can be adjusted based on the amount of control data to be transmitted. The system dynamically allocates bandwidth within timeslots, expanding control plane windows when beamforming weights need transmission and reducing them when control data volume is low, thereby adapting peak throughput requirements to actual needs.
3Reliability
If dedicated bandwidth slots are allocated for control data, then control data transmission reliability is improved, but overall bandwidth utilization decreases
Solution Approach 1:
The patent makes the control plane windows universal by allowing them to carry different types of control data depending on the transmission requirements. The same control plane window infrastructure is used for beamforming weights, other control parameters, and dynamic control messages, eliminating the need for separate dedicated channels for each control data type while maintaining reliability through the structured window approach.
Data Source
AI summary
Apparatuses, systems, and techniques to transmit control plane data over a radio network. In at least one embodiment, burst control plane data for a future transmission slot is transmitted in a non-overlapping dedicated window at the end of a previous transmission slot.