Cell Reselection Using Cell-Specific Priority for Load Distribution
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Solution Overview
Problem
In heterogeneous wireless communication networks, cell reselection based on frequency-specific priority can lead to load concentration on certain cells, making it difficult to consider cell quality and distribute loads effectively.
Innovation Solution
A method for cell reselection that considers cell-specific priority, where user equipment (UE) receives cell-specific priorities and thresholds from the network, selects N cells with high ranking and quality, and reselects one among them, allowing for improved load distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If cell reselection is performed based on frequency-specific priority, then cell reselection can be simplified, but load concentration on particular cells occurs and cell quality cannot be considered
Solution Approach 1:
The patent applies local quality by introducing cell-specific priorities that differ from frequency-specific priorities. Each cell can be assigned a unique priority value, allowing the system to treat individual cells differently rather than uniformly across frequencies. This enables load distribution to specific cells based on their individual characteristics and current load conditions, resolving the contradiction between simple frequency-based reselection and effective load distribution.
2Reliability
If cell reselection is performed based on cell-specific priority, then cell quality can be considered, but load distribution becomes difficult
Solution Approach 1:
The patent implements dynamics by making cell priorities adjustable and configurable. The network can dynamically assign different priorities to different cells based on load conditions, traffic patterns, and quality requirements. This dynamic priority assignment allows the system to optimize both cell quality consideration and load distribution efficiency by adapting priorities to current network conditions rather than using static frequency-specific priorities.
3Reliability
If N cells are selected based on high ranking and quality threshold, then load distribution is improved, but device complexity increases
Solution Approach 1:
The patent applies copying by having the network provide pre-calculated priority information and quality thresholds to UEs. Instead of requiring UEs to perform complex real-time analysis of all cell parameters, the network creates simplified priority lists and threshold values that UEs can directly use for cell selection. This copying of processed information to the UE reduces the computational burden on the device while maintaining effective load distribution.
Data Source
AI summary
Provided are a method by which a terminal reselects a cell having the same priority in a wireless communication system, and a device for supporting the method. The terminal receives a cell-specific priority and a threshold value from a network, selects N number of cells of which the cell quality is the threshold value or more among cells having the same cell-specific priority, and can reselect a certain cell among the selected N number of cells.