Centralized Uplink Controller for Dynamic Waveform Selection
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Solution Overview
Problem
Current wireless networks do not efficiently leverage available uplink technologies to maximize throughput and spectral efficiency for wireless devices, particularly due to variations in RF conditions and device capabilities, leading to suboptimal quality of service and reliability.
Innovation Solution
A centralized uplink technology controller dynamically selects the most suitable uplink technology for wireless devices based on their capabilities, RF parameters, and network conditions, enabling the switching between technologies such as 2×2 MIMO, waveform switching, carrier aggregation, and SRS antenna switching to optimize performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If CP-OFDM uplink waveform is used to maximize spectral efficiency, then throughput is improved, but power amplifier spikes occur at cell-edge wireless devices causing reliability degradation
Solution Approach 1:
The system dynamically switches between CP-OFDM and DFT-s-OFDM waveforms based on device location and RF conditions. Cell-center devices use CP-OFDM for maximum throughput, while cell-edge devices automatically switch to DFT-s-OFDM to avoid power amplifier spikes, achieving both high throughput and reliable service across different locations
Solution Approach 2:
Different uplink waveforms are assigned to different geographical locations within the cell. The network identifies device location and applies the appropriate waveform locally: CP-OFDM in cell-center regions where spectral efficiency is prioritized, and DFT-s-OFDM in cell-edge regions where signal stability is prioritized
2Adaptability or versatility
If multiple uplink technologies are made available to support diverse use cases, then adaptability is improved, but device complexity and network configuration complexity increase
Solution Approach 1:
The system enables devices to automatically select and configure the appropriate uplink technology based on their own capabilities and current RF conditions. The device self-evaluates its power class, antenna configuration, and channel conditions to determine the optimal uplink mode without requiring complex manual configuration or extensive processing
Solution Approach 2:
The uplink technology selection framework is designed to universally support multiple uplink technologies (CP-OFDM, DFT-s-OFDM, 2×2 MIMO, LTL CA, antenna switching) through a single unified decision-making process. The system evaluates all available technologies and selects the most appropriate one, making the framework itself multi-functional while keeping individual device implementations relatively simple
Data Source
AI summary
Systems and methods are provided for centralized uplink technology control. A method includes receiving, over a network, from at least one wireless device, a capability report identifying wireless device uplink capabilities and determining uplink capabilities for the network. The method includes identifying matching network and wireless device uplink capabilities identifying radio frequency (RF) parameters for the wireless device and selecting an uplink technology for the wireless device from the matched network and wireless device uplink capabilities based on the RF parameters in order to optimize functionality of the wireless device.