Network Slice Paging for Mobile Cell Reselection
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Solution Overview
Problem
In mobile communication systems, user equipment (UE) struggles to connect to an appropriate cell that supports the desired network slice, especially during cell reselection procedures.
Innovation Solution
A communication control method where a base station transmits a first paging message associated with a network slice to the user equipment, enabling the UE to recognize the slice and perform slice-specific cell reselection or RRC connection establishment procedures to connect to an appropriate cell.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If user equipment performs cell reselection procedure without slice-specific information, then the cell reselection process is simple and fast, but the UE cannot connect to an appropriate cell that supports the desired network slice
Solution Approach 1:
The base station transmits slice-specific cell reselection information to the UE in advance before the UE needs to perform cell reselection. This preliminary provision of slice information (including slice identifiers and frequency priorities) enables the UE to make informed cell selection decisions without adding complex real-time processing during the reselection procedure itself.
Solution Approach 2:
The cell reselection information is segmented into slice-specific components, where different network slices are associated with different frequencies or cell groups. Each slice has its own priority information, allowing the UE to selectively apply reselection criteria based on the desired slice rather than treating all cells uniformly.
2Reliability
If the base station transmits slice-specific paging messages, then the UE can perform slice-aware cell reselection, but the paging message transmission becomes more complex
Solution Approach 1:
Different paging messages are transmitted with different qualities or characteristics based on the target network slice. Each paging message contains slice-specific information tailored to the particular slice, allowing the UE to receive customized paging instructions for different slices without requiring a completely different paging mechanism for each slice.
Data Source
AI summary
A communication control method according to one aspect is a communication control method in a mobile communication system. The communication control method includes transmitting, by a base station, a first paging message associated with a network slice to a user equipment.