UE Cell Selection via Speed Matching for Railway Network Congestion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High-speed railway dedicated networks experience congestion due to non-high-speed train users accessing them, leading to poor communication quality for high-speed train passengers, as existing solutions fail to effectively manage cell camping and re-selection based on user equipment (UE) movement speeds.
Innovation Solution
A method and apparatus for UE to select a suitable cell to camp on by determining its movement speed and matching it with expected speed information broadcast by cells, allowing for optimal cell selection based on movement speed and signal quality, thereby avoiding network congestion and ensuring communication needs are met.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UE automatically selects high-speed railway dedicated network based on better network coverage, then network coverage quality is improved, but network congestion occurs and communication quality for high-speed train passengers deteriorates
Solution Approach 1:
The patent introduces speed-based parameter changes to the cell selection process. Base stations broadcast expected speed information for different cell types, and UE determines its own movement speed to match with appropriate cell categories. This parameter-based differentiation allows the system to guide low-speed UE away from high-speed railway dedicated networks while maintaining coverage quality for high-speed users, thereby preventing network congestion without sacrificing coverage reliability.
2Ease of operation
If UE uses traditional cell selection based on signal strength alone, then cell selection simplicity is maintained, but inappropriate cell selection occurs leading to network congestion and poor communication quality
Solution Approach 1:
The patent implements preliminary action by having base stations pre-broadcast expected speed information for different cells before UE makes selection decisions. This advance provision of speed-based cell categorization information allows UE to perform speed-matched cell selection without complex real-time analysis, maintaining operational simplicity while significantly improving communication quality through appropriate cell matching.
3Productivity
If high-speed railway dedicated network is deployed with same frequency resources as public mobile networks, then resource utilization efficiency is improved, but network congestion and interference occur affecting both networks
Solution Approach 1:
The patent applies local quality by differentiating cell selection based on local speed characteristics. Different cells (high-speed railway dedicated vs. public mobile networks) are assigned different expected speed profiles, and UE selects cells matching its local speed condition. This creates speed-based virtual resource partitioning where low-speed UE accesses public networks and high-speed UE accesses dedicated networks, improving resource utilization while minimizing interference through spatial-speed separation.
Data Source
AI summary
A method of camping on a cell includes: for selecting a cell to camp, determining a movement speed of user equipment (UE); determining a cell to be camped on based on movement speed of the UE and respective expected speed information of UE to be served by one or more cells capable of being camped on; and camping on the cell to be camped on. The UE can therefore be enabled to select a cell to be camped on suitable for the UE's current movement speed according to the expected speed of UE to be served by a network.