Spectrum Allocation Controller for Dynamic LTE and 5G-NR Bandwidth Sharing
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Solution Overview
Problem
Current wireless networks face inefficiencies in spectrum utilization due to fixed allocation of bandwidth between air-interface technologies like LTE and 5G-NR, which fails to adapt to real-time network traffic demands, leading to potential congestion and suboptimal Quality of Service (QoS).
Innovation Solution
A spectrum allocation controller dynamically provisions bandwidth within a base station node using a combination of time-division and frequency-division techniques, leveraging Bandwidth Parts (BWP) technology and machine learning algorithms to allocate spectrum based on real-time traffic analysis, ensuring efficient sharing between LTE and 5G-NR air-interface technologies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fixed spectrum allocation is used between air-interface technologies, then transmission interference is avoided, but spectrum utilization efficiency deteriorates due to inability to adapt to real-time traffic demands
Solution Approach 1:
The patent implements dynamic spectrum allocation by allowing air-interface technologies to flexibly share spectrum resources based on real-time traffic conditions. The system transitions from fixed allocation to dynamic sharing, where the spectrum allocation ratio is adjusted according to network traffic demands, thereby resolving the contradiction between reliable interference avoidance and efficient spectrum utilization.
Solution Approach 2:
The system changes the spectrum allocation parameter dynamically by introducing an allocation ratio that can be adjusted in real-time. This parameter modification enables the network to adapt spectrum distribution to varying traffic conditions, improving spectrum utilization while maintaining acceptable interference levels through controlled parameter adjustment.
2Reliability
If individual cells support individual air-interface technologies, then transmission interference is mitigated, but network adaptability deteriorates due to fixed bandwidth allocation
Solution Approach 1:
The patent makes individual cells multi-functional by enabling them to support multiple air-interface technologies simultaneously through dynamic spectrum sharing. Instead of dedicating cells to single technologies, the system allows flexible allocation of spectrum resources within cells, making them adaptable to different technology requirements while maintaining interference mitigation through controlled sharing.
Solution Approach 2:
The system introduces dynamic adaptability to cells by enabling real-time adjustment of spectrum allocation ratios for different air-interface technologies. This dynamic capability allows cells to adapt their functionality based on network conditions, traffic demands, and technology requirements, thereby improving network versatility while maintaining reliable operation.
3Reliability
If fixed bandwidth ranges are assigned to air-interface technologies, then transmission reliability is maintained, but network performance deteriorates due to inability to respond to real-time traffic variations
Solution Approach 1:
The patent modifies the fixed bandwidth range parameter into a dynamic allocation ratio parameter. This parameter change allows the system to maintain transmission reliability through controlled spectrum sharing while improving network performance by adapting bandwidth allocation to real-time traffic conditions, thereby resolving the contradiction between reliability and performance.
Data Source
AI summary
This disclosure describes techniques that enable a telecommunications network to share available bandwidth within a cell of base station node between different air-interface technologies, such as Long-Term Evolution (LTE) and 5G-New Radio (5G-NR). This disclosure further enables spectrum allocation to service segments of a base station node. A spectrum allocation controller is described that is configured to identify, within a service area of a base station node, available spectrum, and in doing so, allocate available spectrum to non-overlapping service segments.