Base Station UE Location and Frequency Band Assignment
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Solution Overview
Problem
Conventional massive MIMO communication systems face inefficiencies in interference management, particularly at the cell edge, due to high overhead and power consumption in coordinating frequency spectrum usage across multiple cells.
Innovation Solution
A base station determines the location of user equipment (UE) within its coverage area and dynamically assigns a frequency band, adjusting from full to partial bands based on the UE's location to minimize interference, using a combination of location and signal quality information to optimize frequency spectrum usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional interference management methods are used to coordinate transmissions of UEs at the cell edge, then interference between cells is managed, but overhead and power consumption increase significantly
Solution Approach 1:
The patent divides the coverage area into multiple regions with different interference characteristics. UEs in different regions are assigned different frequency bands based on their local interference environment. This localized approach allows frequency reuse in regions with low interference while avoiding interference in regions where it occurs, reducing the need for network-wide coordination and lowering overhead and power consumption.
Solution Approach 2:
The frequency spectrum is segmented into multiple bands, and different segments are assigned to different geographic regions. This segmentation enables simultaneous frequency reuse across the network by assigning appropriate frequency bands to UEs based on their location, thereby managing interference without requiring centralized coordination of the entire spectrum for all UEs.
2Object-affected harmful factors
If frequency bands are assigned to UEs at the cell edge, then interference management is achieved, but network overhead increases due to distribution of management information
Solution Approach 1:
The patent pre-divides the coverage area into multiple regions with defined interference characteristics before UEs need service. Frequency band assignments are predetermined for each region based on interference analysis. When a UE connects, its location determines its frequency band assignment without requiring complex real-time coordination or distribution of management information across the network.
Solution Approach 2:
Different frequency bands are assigned to different geographic regions based on their local interference characteristics. This localized frequency assignment strategy allows UEs to be served with appropriate frequency bands without requiring network-wide information distribution, as each region's frequency assignments are determined by local conditions.
Data Source
AI summary
A method and a device for performing massive multiple-input and multiple-output (“MIMO”) operations with a user equipment (UE). The method and device receive signals from a UE within a coverage area of the device, determine a location of the UE within the coverage area and assign an operating frequency band to the UE for communication with the device, wherein the coverage area includes a plurality of regions and the operating frequency band assigned to the UE is based on the one of the regions corresponding to the location and transmit the operating frequency band assignment to the UE.