Base Station Carrier Segmentation for Interference Reduction
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Solution Overview
Problem
Wireless service providers face interference issues when multiple base stations operate on the same narrowband carrier, affecting IoT devices like those in aerial drones, due to the limited bandwidth and battery drain concerns associated with inter-cell interference cancellation methods.
Innovation Solution
Configuring multiple base stations to operate on the same wideband carrier while each operating on a different non-overlapping narrowband carrier within that wideband carrier, with each base station avoiding resource allocation overlaps to minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple base stations operate on the same narrowband carrier, then resource utilization is improved, but inter-cell interference increases
Solution Approach 1:
The patent segments the narrowband carrier into multiple non-overlapping narrowband carriers within a wideband carrier. Each base station is assigned a different narrowband carrier, allowing multiple base stations to operate simultaneously without interfering with each other while still utilizing the same wideband carrier spectrum.
Solution Approach 2:
The patent transitions from a single narrowband carrier dimension to multiple narrowband carriers within a wideband carrier framework. This dimensional expansion allows base stations to be differentiated by their specific narrowband carrier assignments while maintaining overall system coordination through the common wideband carrier.
2Object-affected harmful factors
If inter-cell interference cancellation methods are used, then interference is reduced, but battery drain increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring base stations with different narrowband carrier assignments before operation begins. This preliminary differentiation of carriers eliminates interference at its source, avoiding the need for base stations or user devices to perform energy-intensive interference cancellation procedures during operation.
3Productivity
If base stations operate on the same wideband carrier, then spectrum efficiency is improved, but coordination complexity increases
Solution Approach 1:
The patent segments the wideband carrier into multiple narrowband carriers, each assigned to a different base station. This segmentation simplifies coordination by creating distinct, non-overlapping frequency channels for each base station, eliminating the need for complex real-time coordination while maintaining efficient use of the wideband spectrum.
Data Source
AI summary
In a wireless communication system including a group of base stations, the base stations are all configured to operate on a common wideband carrier, and each base station is further configured to operate on a narrowband carrier defined as a guest carrier within the frequency range of the wideband carrier, with each base station's narrowband carrier being non-overlapping in frequency with each other base station's narrowband carrier. Further, each base station could be configured to avoid allocation of air-interface resources on the common wideband carrier that would overlap in frequency with the narrowband carrier on which any other base station of the group is configured to operate within the wideband carrier.