Dynamic Cell Reselection Priority for Multi-Carrier Load Balancing
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Solution Overview
Problem
In conventional 3GPP mobile communication systems, there is no efficient method to dynamically distribute user equipment (UE) based on load across multiple carriers, leading to uncontrolled connection attempts to overloaded cells.
Innovation Solution
A method and device that determine a search rate and cell reselection priority for idle UE based on load information, such as carrier distribution, active UE distribution, or cell load averages, and transmit this information to the UE to optimize carrier selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If UE accesses any carrier without load-based distribution, then UE can connect to the network, but connection attempts concentrate on overloaded cells causing network inefficiency
Solution Approach 1:
The patent implements dynamic cell reselection priority adjustment where the eNB continuously monitors carrier load conditions and dynamically updates the cell reselection priority information sent to UEs. This allows the system to adapt to changing load conditions in real-time, directing UEs away from overloaded carriers and toward carriers with available capacity, thereby resolving the contradiction between maintaining network access and preventing overload concentration.
Solution Approach 2:
The system employs feedback mechanisms where the eNB monitors carrier load conditions and uses this information to adjust cell reselection priorities. The load condition information is fed back to UEs through system information blocks or RRC messages, enabling UEs to make informed carrier selection decisions that balance network load, thus improving overall network efficiency while preventing overload on specific cells.
2Productivity
If cell reselection priority is adjusted dynamically based on load, then load balancing improves, but system complexity increases
Solution Approach 1:
The patent changes the parameter of cell reselection priority dynamically based on monitored load conditions. By adjusting this single critical parameter in response to load changes, the system achieves effective load balancing without requiring complex structural modifications. The eNB monitors carrier load and modifies the priority values sent to UEs, providing a relatively simple mechanism that delivers significant load balancing improvements.
Data Source
AI summary
The present invention relates to a method and device for distributing idle UE by a carrier in eNB of a multi-carrier based mobile communication system. The method of distributing idle UE in a multi-carrier based mobile communication system according to the present invention includes a process of determining a search rate by a carrier on the basis of information representing load on the carrier, a step of determining a cell reselection priority on the idle UE on the basis of the determined search rate, and a process of transmitting the determined cell reselection priority to the idle UE.