Base Station Bandwidth Part Sharing for QoS and Interference Control
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Solution Overview
Problem
Existing methods for managing frequency bands in overlapping general and specialized networks in 5G communication systems suffer from inefficiency and interference, leading to poor quality of service (QoS) and unnecessary signaling when terminals move between coverages.
Innovation Solution
A method and apparatus for sharing frequencies between base stations, where a specialized base station shares bandwidth part information with a mobile edge core network, allowing real-time adjustments and optimizing frequency use by measuring signal levels and propagation paths to avoid interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If frequency bands are divided into separate general purpose and specialized frequency bands, then interference between base stations is reduced, but frequency use efficiency deteriorates due to idle frequency bands
Solution Approach 1:
The patent implements dynamic frequency band allocation where bandwidth parts are not fixed but can be reallocated based on real-time service requirements. The mobile edge core network continuously monitors service demands and adjusts bandwidth part assignments, allowing frequency bands to transition between general purpose and specialized use dynamically, thus eliminating idle frequency bands while maintaining interference avoidance
Solution Approach 2:
The system changes the configuration parameters of bandwidth parts dynamically. When service requirements change, the mobile edge core network modifies bandwidth part parameters such as frequency location, bandwidth size, and subcarrier spacing through RRC reconfiguration, enabling the same frequency band to serve different purposes at different times, thereby improving frequency use efficiency without causing interference
2Object-affected harmful factors
If bandwidth parts are fixed for general purpose and specialized coverages, then interference is avoided, but adaptability deteriorates when terminals move between coverages
Solution Approach 1:
The patent makes bandwidth part allocation dynamic rather than static. When a terminal moves between general purpose and specialized coverages, the mobile edge core network detects the movement and dynamically reallocates bandwidth parts through continuous RRC reconfiguration, ensuring the terminal receives appropriate frequency resources for its current location without causing interference to other cells
Solution Approach 2:
The system implements feedback mechanisms where the mobile edge core network continuously monitors terminal positions, service requirements, and interference levels. Based on this feedback, the network dynamically adjusts bandwidth part allocations to maintain both interference avoidance and terminal adaptability as terminals move between different coverage areas
3Productivity
If frequency bands are dynamically reallocated based on service requirements, then frequency use efficiency is improved, but device complexity increases due to continuous monitoring and adjustment
Solution Approach 1:
The patent introduces a mobile edge core network as an intermediary that centralizes the complex task of dynamic frequency management. Instead of each base station independently managing frequency allocation, the mobile edge core network coordinates bandwidth part allocations across multiple base stations, simplifying individual device complexity while achieving system-wide frequency efficiency through centralized control
Data Source
AI summary
A method of sharing a frequency between base stations, which is performed by a specialized base station having at least some specialized coverages inside a general purpose coverage of a general purpose base station, may comprise: receiving information about adjacent base stations including the general base station from a mobile edge core network configured to manage the specialized base station; requesting, by the specialized base station, necessary bandwidth parts from the mobile edge core network; receiving allocation information for the bandwidth parts from the mobile edge core network; and setting the bandwidth parts based on the allocation information, wherein the specialized base station provides a specialized service to a specialized terminal in the specialized coverage according to the set bandwidth parts.