Dynamic Power Allocation for LTE and NR Antenna Arrays
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Solution Overview
Problem
Existing wireless base station antenna arrays using both New Radio (NR) and Long Term Evolution (LTE) technologies have not been optimized for power distribution across NR and LTE antenna elements, nor have they been optimized for Multi-User Multiple Input Multiple Output (MU-MIMO) or efficiently handling varying load conditions and antenna element configurations.
Innovation Solution
The implementation of a baseband circuitry that dynamically determines and adjusts power levels for NR and LTE antenna elements based on loading conditions, reallocates antenna elements between NR and LTE portions, and separately implements MU-MIMO on both NR and LTE portions to optimize power distribution and handle varying load conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If antenna arrays use both NR and LTE with fixed power distribution, then system compatibility is maintained, but power distribution efficiency deteriorates
Solution Approach 1:
The patent implements dynamic power distribution by allowing the baseband unit to adjust power levels for NR and LTE antenna elements in real-time based on current UE loading conditions. The system transitions from fixed to dynamic power allocation, where power levels are continuously optimized according to traffic demands on each technology type.
Solution Approach 2:
The system changes the power level parameter dynamically based on UE loading conditions. The baseband unit monitors loading and adjusts power distribution parameters between NR and LTE antenna elements, transforming the static power distribution into an adaptive parameter that responds to network conditions.
2Productivity
If antenna arrays are designed for single technology optimization, then performance on that technology is improved, but multi-technology compatibility deteriorates
Solution Approach 1:
The antenna array is segmented into distinct NR antenna elements and LTE antenna elements, with independent power control for each segment. This segmentation allows the baseband unit to optimize power distribution separately for each technology while maintaining overall system integration and multi-technology compatibility.
Solution Approach 2:
The antenna array is designed with universal functionality to support both NR and LTE technologies. By incorporating antenna elements that can serve multiple purposes and implementing a unified baseband unit that manages both technologies, the system achieves multi-technology compatibility without sacrificing performance on either platform.
3Productivity
If MU-MIMO is implemented across the entire antenna array, then throughput is improved, but interference management complexity deteriorates
Solution Approach 1:
MU-MIMO operations are segmented and implemented separately on NR and LTE portions of the antenna array. This segmentation isolates interference management to individual technology domains, reducing the overall complexity compared to managing MU-MIMO across the entire mixed-technology array simultaneously.
Solution Approach 2:
The system applies local quality optimization by implementing MU-MIMO with technology-specific parameters and configurations. Each technology portion (NR and LTE) can optimize its MU-MIMO operations independently with appropriate beamforming and spatial multiplexing parameters, improving throughput while managing interference locally rather than globally.
4Adaptability or versatility
If antenna elements are statically allocated between NR and LTE, then system stability is maintained, but adaptability to varying load conditions deteriorates
Solution Approach 1:
The antenna element allocation between NR and LTE is made dynamic rather than static. The baseband unit can reconfigure and reallocate antenna elements based on varying load conditions, allowing the system to adapt to changing traffic demands while maintaining operational stability through controlled, incremental reconfigurations.
Data Source
AI summary
An antenna array in a wireless base station has a New Radio (NR) portion and a Long Term Evolution (LTE) portion. Baseband circuitry determines NR User Equipment (UE) loading and LTE UE loading on the antenna array. The baseband circuitry determines an NR power level and an LTE power level based on the NR UE loading and the LTE UE loading. Radio circuitry drives the NR portion of the antenna array at the NR power level and drives the LTE portion of the antenna array at the LTE power level. The baseband circuitry may also re-allocate antenna elements between the NR elements and the LTE elements in the antenna array based on antenna element loss, UE loading, and control channel usage. The baseband circuitry may also separately implement Multi-User Multiple Input Multiple Output (MU-MIMO) on the NR and LTE portions of the antenna array.