Base Station Frequency Band Selection for Interference Management
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Solution Overview
Problem
In wireless communication systems, there is a need to efficiently manage frequency bands for signal transmission and reception between base stations to prevent interference and optimize communication capacity, especially when legacy LTE systems coexist with new wireless communication systems using different numerologies.
Innovation Solution
A method and apparatus for transmitting and receiving signals between user equipment and multiple base stations, where a base station receives information about another base station's frequency band usage and adjusts its communication with user equipment to use either the same frequency band or an adjacent band, including details on configurations such as small cell ON/OFF, reference signal settings, timing synchronization, and resource allocations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If base stations use the same frequency band for communication, then communication capacity is improved, but interference between base stations increases
Solution Approach 1:
The base station dynamically adjusts its frequency band selection based on real-time information about other base stations' frequency usage. The BS can switch between using the same frequency band (when no interference is detected) and using an adjacent frequency band (when interference is detected), making the frequency allocation dynamic rather than static.
Solution Approach 2:
The system implements a feedback mechanism where base stations exchange information about their frequency band usage with neighboring base stations. This feedback loop allows each BS to make informed decisions about frequency band selection, adjusting its communication parameters based on the operational status of other BSs to optimize capacity while minimizing interference.
2Object-generated harmful factors
If base stations use adjacent frequency bands to avoid interference, then interference is reduced, but communication capacity is limited
Solution Approach 1:
The frequency band allocation is made dynamic through continuous monitoring and adjustment. Base stations can transition between using the same frequency band and adjacent frequency bands based on real-time conditions, allowing the system to maximize capacity when possible while having interference avoidance as a fallback option.
Solution Approach 2:
The system changes the frequency band parameter dynamically based on operational conditions. By adjusting the frequency band selection parameter according to feedback from other base stations, the system can optimize between capacity and interference reduction rather than being fixed to a single frequency allocation strategy.
3Productivity
If base stations exchange frequency band information, then frequency band usage is optimized, but system complexity increases
Solution Approach 1:
The system uses an intermediary feedback mechanism where base stations exchange essential frequency band information through a standardized interface. This intermediary information exchange allows for optimized frequency band usage without requiring complex direct coordination between all base stations, simplifying the overall system architecture while maintaining efficiency.
Data Source
AI summary
A method, according to one embodiment of the present invention, may comprise a configuration whereby a base station, which has received, from another base station, a message including information associated with the another base station, communicates with a terminal on a specific frequency band on the basis of the information associated with the another base station. Here, the specific frequency band may be: a frequency band included in a frequency band used by the another base station; or a frequency band adjacent to the frequency band used by the another base station.