Dynamic Spectrum Sharing Between 4G LTE and 5G NR Base Stations
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Solution Overview
Problem
Existing 5G communication systems face challenges in efficiently sharing spectrum resources with 4G LTE systems, especially when they coexist in the same frequency band, leading to inefficient resource utilization and performance issues due to varying network conditions and traffic demands.
Innovation Solution
A method where a first base station dynamically allocates resources with a second base station based on predefined schemes, considering the number of connected terminals, data buffer occupancy, and resource usage, allowing for adaptive resource allocation ratios to optimize resource utilization according to different network states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple wireless communication systems (4G LTE and 5G NR) coexist in the same frequency band, then spectrum utilization is improved, but interference between systems increases and resource allocation becomes complex
Solution Approach 1:
The patent implements dynamic resource allocation where the base station continuously monitors network conditions (traffic load, channel quality, buffer status) and adjusts the resource allocation ratio between 4G LTE and 5G NR systems in real-time. This allows the system to adapt to varying conditions and optimize spectrum utilization while managing interference dynamically rather than using static allocation schemes
Solution Approach 2:
The patent changes key parameters such as the resource allocation ratio, time slot configuration, and frequency resource distribution between 4G and 5G systems based on monitored network conditions. By adjusting these parameters dynamically, the system resolves the contradiction between improved spectrum utilization and reduced allocation complexity
2Productivity
If dynamic resource allocation is implemented between 4G LTE and 5G NR systems, then resource utilization efficiency is improved, but system complexity and signaling overhead increase
Solution Approach 1:
The patent applies different resource allocation strategies to different resource types and different network conditions. Specifically, it divides resources into time domains and frequency domains, applying localized optimization rules to each domain based on specific traffic patterns and channel conditions, thereby improving efficiency without uniformly increasing system complexity across all operations
Solution Approach 2:
The patent segments the resource allocation process into distinct components: time domain scheduling, frequency domain allocation, and priority-based scheduling. By dividing the complex allocation task into manageable segments with specific rules for each, the system achieves high resource utilization while keeping individual complexity components manageable
3Reliability
If resource allocation is adjusted based on network conditions, then system performance is improved, but measurement and detection difficulty increases
Solution Approach 1:
The patent implements a feedback mechanism where the base station continuously monitors network conditions including traffic load, channel quality indicators, and buffer status reports from user equipment. This feedback information is used to automatically adjust resource allocation decisions, improving system performance while the standardized feedback channels keep monitoring complexity manageable
Solution Approach 2:
The patent performs preliminary measurements and evaluations of network conditions before making resource allocation decisions. By proactively monitoring and predicting network state trends, the system can prepare allocation strategies in advance, improving performance while reducing the complexity of real-time decision-making
Data Source
AI summary
A method performed by a first Base Station (BS) in a wireless communication system, includes: receiving second network information of a second BS from the second BS of the wireless communication system, wherein the first BS supports a wireless access scheme that is different from a wireless access scheme of the second BS and shares a same frequency band with the second BS; determining a resource allocation ratio between the first BS and the second BS according to a predefined resource allocation scheme based on first network information of the first BS and the second network information of the second BS; and transmitting information on the resource allocation ratio to the second BS.