NSA Anchor Cell Reselection Priority for Stable Idle Camping
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Solution Overview
Problem
Terminals supporting Non-Standalone (NSA) networking may easily reselect LTE-only cells when camping on an NSA anchor cell due to lower configured reselection priorities, leading to suboptimal network experience.
Innovation Solution
A method and device that raise the reselection priority of NSA anchor cells for terminals supporting NSA functionality, either through network device indications or terminal-initiated modifications, to ensure preferential camping on NSA anchor cells, and include congestion management and signal quality-based redirection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the reselection priority of NSA anchor cells is configured lower than LTE-only cells, then terminals can easily reselect to LTE-only cells, but this causes terminals to leave NSA anchor cells and results in suboptimal network experience
Solution Approach 1:
The patent dynamically adjusts the reselection priority of NSA anchor cells based on terminal camping state and network conditions. When a terminal is camping on an NSA anchor cell in idle state, the network device sends an indication to raise the reselection priority of the NSA anchor cell to be higher than or equal to that of LTE-only cells, preventing unnecessary reselection and improving network experience
Solution Approach 2:
The patent changes the reselection priority parameter of NSA anchor cells conditionally. The network device monitors terminal camping state and modifies the reselection priority parameter dynamically: raising it when terminal is on NSA anchor cell in idle state, and adjusting it based on signal quality and congestion conditions to optimize network performance
2Reliability
If the reselection priority of NSA anchor cells is raised to prevent reselection, then network experience is improved, but this requires additional network device indications and increases signaling overhead
Solution Approach 1:
The patent applies local quality by sending the reselection priority indication only to terminals that are camping on NSA anchor cells in idle state, rather than broadcasting to all terminals. This targeted approach raises the reselection priority only where needed, improving network experience while minimizing unnecessary signaling overhead to other terminals
3Productivity
If terminals are redirected based on congestion conditions, then congestion management is improved, but this requires monitoring and redirecting operations that increase network device complexity
Solution Approach 1:
The patent implements feedback mechanisms where the network device monitors terminal camping state, signal quality, and congestion conditions continuously. Based on this feedback, the network device dynamically adjusts reselection priorities and redirects terminals: sending indications to raise priority when terminal is on NSA anchor cell, or redirecting to LTE-only cells when signal quality deteriorates or congestion occurs, optimizing network resource utilization
Data Source
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AI summary
The present disclosure provides a cell camping method, a related device, and a storage medium. The cell camping method includes: determining, by a network device, a cell where a terminal is camping and a corresponding camping state, the terminal being a terminal that supports a Non-Standalone networking (NSA) function; and transmitting a first indication to the terminal when the terminal is camping on a first cell and is in an idle state, the first indication indicating to the terminal that a reselection priority of the first cell is a first priority. The first priority is higher than or equal to a second priority, the second priority is a reselection priority of a second cell, and the first cell is an NSA anchor cell.