Cell Camping Method Prioritizing Service Types in 5G Networks
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Solution Overview
Problem
In 5G networks, user equipment (UE) may inadvertently camp on suitable cells that do not provide normal services due to high cell density and lack of effective service area restriction support in existing technologies.
Innovation Solution
A cell camping method that prioritizes cells based on service types, where camping priorities are set higher for suitable cells providing normal services compared to restricted services, and acceptable cells, ensuring UE camps on cells with higher signal quality and appropriate service types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If UE selects cells based on signal quality alone in high density 5G networks, then connection speed is improved, but service reliability deteriorates as UE may camp on cells providing only restricted services
Solution Approach 1:
The patent changes the cell selection parameter from signal quality alone to a composite parameter that includes both signal quality and service type priority. The access stratum is enhanced to determine cell priority based on service types (normal service vs. restricted service), and the UE uses this priority information alongside signal quality measurements to select camping cells, ensuring both fast connection and reliable service access.
2Device complexity
If existing cell selection mechanisms are used without service type consideration, then device complexity is kept low, but service area restriction effectiveness deteriorates
Solution Approach 1:
The patent implements preliminary action by having the access stratum determine cell priority based on service types before the UE performs cell selection. The network provides service type information to the access stratum in advance, which then pre-calculates cell priorities. This allows the UE to efficiently select appropriate cells without complex real-time analysis, maintaining low device complexity while ensuring service area restrictions are effectively enforced.
Data Source
AI summary
A cell camping method includes: when selecting a cell for camping, controlling an access stratum to determine, based on camping priorities of cells, a cell to be camped on, the camping priorities being related to service types that the cells provide; and performing a camping operation in the cell to be camped on.