BWP Load Balancing via Broadcast System Message Factors
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Solution Overview
Problem
Current load balancing techniques in mobile communication systems, particularly at the cell level, fail to effectively distribute bandwidth, leading to congestion as multiple User Equipments (UEs) select the same Bandwidth Part (BWP) for initial connection, resulting in inefficient resource utilization.
Innovation Solution
A method and device for transmitting load balancing factors are introduced, where a base station generates and broadcasts system messages containing load balancing factors for each BWP, allowing UEs to select target BWPs based on these factors during reselection, thereby achieving BWP-level load balancing and reducing congestion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If cell-level load balancing is implemented, then resource distribution is improved, but congestion cannot be effectively reduced due to multiple UEs selecting the same BWP
Solution Approach 1:
The patent segments the load balancing mechanism from cell-level to BWP-level by introducing separate load balancing factors for each Bandwidth Part. This allows independent control and distribution of UEs across different BWPs within a cell, preventing congestion on individual BWPs while maintaining overall cell-level resource management.
Solution Approach 2:
The patent applies local quality by assigning different load balancing factors to different BWPs based on their specific congestion conditions. Each BWP can have customized load balancing parameters (qoffset, qhyst, qoffsetTemp) that are tailored to its local traffic patterns and resource availability, enabling precise congestion control at the BWP level rather than applying uniform cell-level parameters.
2Object-affected harmful factors
If BWP-level load balancing is implemented, then congestion is reduced, but system complexity increases due to multiple load balancing factors
Solution Approach 1:
The patent implements dynamic load balancing factors that can be adjusted independently for each BWP based on real-time congestion conditions. The network can dynamically modify qoffset, qhyst, and qoffsetTemp parameters for specific BWPs without affecting other BWPs, allowing flexible and adaptive congestion management that responds to changing traffic patterns.
Solution Approach 2:
The patent changes the parameters of the load balancing mechanism by introducing BWP-specific parameters (qoffset-BWP, qhyst-BWP, qoffsetTemp-BWP) that extend the existing cell-level parameters. This parameter expansion enables fine-grained control over BWP selection behavior, allowing the system to manage congestion through parameter adjustment rather than structural redesign.
3Loss of information
If multiple load balancing factors are broadcast, then information completeness is improved, but message size increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring and broadcasting load balancing factors for multiple BWPs in advance through system information messages. This allows UEs to have complete information about all available BWPs and their respective load balancing parameters before making selection decisions, eliminating the need for additional on-demand information exchange and reducing overall signaling overhead.
Data Source
AI summary
Provided are a method and device for transmitting load balancing factors. The method includes generating a system message, the system message including load balancing factors of each Bandwidth Part (BWP); and sending the system message by broadcasting.