Multi-Carrier Load Distribution in Wireless Base Stations
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Solution Overview
Problem
The existing LTE system lacks a standardized method for distributing load between multi-carriers in wireless communication systems, particularly in scenarios where load balancing is necessary to manage high-capacity data transmission and handovers between base stations.
Innovation Solution
A method and apparatus for classifying multi-carriers into groups and distributing load within and between these groups based on cell load thresholds, allowing for load equalization, offloading, and intragroup offloading by comparing cell loads and performing handovers to optimize resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If load distribution is implemented between base stations, then system availability and response time are improved, but the complexity of managing multi-carrier load balancing increases
Solution Approach 1:
The patent segments multi-carriers into multiple groups (first group, second group, etc.) based on their load characteristics and operational parameters. This segmentation enables independent load management for each group, simplifying the overall complexity while improving system availability through targeted load balancing within specific carrier groups.
Solution Approach 2:
The patent applies different load distribution strategies to different carrier groups based on their specific characteristics. Each group can have customized load management policies, allowing optimized performance for each carrier group while maintaining manageable complexity through localized control rather than uniform management.
2Productivity
If handover between cells is performed to distribute load, then load balancing is improved, but the complexity of determining optimal handover targets increases
Solution Approach 1:
The patent segments carriers into groups and applies different handover strategies based on group characteristics. This segmentation simplifies handover decision-making by providing structured criteria for selecting target cells within specific groups, reducing the complexity of determining optimal handover targets while maintaining effective load distribution.
Solution Approach 2:
The patent incorporates feedback mechanisms where base stations exchange load information with neighboring base stations. This feedback enables dynamic adjustment of handover decisions based on real-time load conditions, simplifying the determination of optimal handover targets through continuous monitoring and adaptation rather than complex static calculations.
3Ease of operation
If multi-carriers are managed as a single unit, then management simplicity is maintained, but load distribution flexibility and responsiveness decrease
Solution Approach 1:
The patent segments multi-carriers into multiple groups while maintaining a unified management framework. This segmentation provides load distribution flexibility and responsiveness for individual carriers or groups without requiring complete redesign of the management system, thus maintaining ease of operation while improving adaptability.
Solution Approach 2:
The patent creates a universal load management framework that can handle multiple carrier groups with different characteristics using the same overall system architecture. This multi-functional approach maintains management simplicity through a unified system while enabling flexible load distribution across different carrier groups through configurable parameters and policies.
Data Source
AI summary
A method and an apparatus for distributing a load of a base station in a wireless communication system supporting multi-carriers are provided. In the method, carriers are classified into a plurality of groups. A load of each of a plurality of cells corresponding to the plurality of groups, is determined. A cell load of each of the plurality of cells is compared with at least one threshold set in advance. When a cell load of a first cell has a value greater than the at least one threshold set in advance, a cell inside a group of the first cell or a cell inside a group different from the first cell is selected depending on the cell load of the first cell. A terminal of the first cell is allowed to perform a handover to the selected cell.