Network Slice Cell Reselection Using UE and Regional Usage Probabilities
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Solution Overview
Problem
Existing cellular telecommunications networks lack efficient methods for UE to select network slices based on region-specific and UE-specific probabilities of usage, leading to suboptimal cell reselection and increased energy consumption.
Innovation Solution
A method for determining UE-specific and region-specific probabilities of network slice usage, modifying cell reselection priorities based on these probabilities, and performing cell reselection procedures to optimize network slice attachment, utilizing network slice management nodes, base stations, and UEs to communicate and adjust priorities dynamically.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If UEs perform cell reselection procedures with detailed network slice evaluation, then network slice selection accuracy is improved, but control signaling overhead and energy consumption increase
Solution Approach 1:
The network determines and provides UE-specific and region-specific probabilities of network slice usage in advance, before the UE performs cell reselection. This preliminary provision of probability information allows the UE to make informed decisions without performing extensive real-time analysis, thereby improving slice selection accuracy while reducing energy consumption during the actual reselection process.
Solution Approach 2:
Probability information acts as an intermediary that mediates between the complex network slice evaluation process and the UE's cell reselection decision. Instead of the UE directly analyzing multiple network slice parameters, it uses the provided probability values as a simplified guide, reducing the computational burden and signaling overhead while maintaining selection accuracy.
2Measurement precision
If UEs perform cell reselection procedures with detailed network slice evaluation, then network slice selection accuracy is improved, but control signaling overhead increases
Solution Approach 1:
The network pre-calculates and provides UE-specific and region-specific probability information before cell reselection occurs. This preliminary action consolidates the information exchange into a single efficient signaling event, avoiding multiple back-and-forth signaling messages that would otherwise be needed for the UE to perform detailed slice evaluation, thus reducing overall signaling overhead while maintaining selection accuracy.
Solution Approach 2:
Probability information serves as an intermediary that encapsulates complex network slice evaluation results into a compact form. This single probability value conveys the essential selection criteria, replacing what would otherwise require extensive signaling exchanges between the network and UE, thereby reducing control signaling overhead while preserving selection accuracy.
3Measurement precision
If the network provides comprehensive network slice information to all UEs, then slice selection accuracy is improved, but network resource utilization decreases
Solution Approach 1:
Instead of providing uniform network slice information to all UEs, the system determines and provides probabilities customized to each UE's specific characteristics and its region. This local customization ensures that each UE receives only the relevant probability information for its context, improving slice selection accuracy for that specific UE while avoiding the waste of broadcasting comprehensive information to all users, thus optimizing network resource utilization.
Data Source
AI summary
A method of operating a User Equipment (UE) in a cellular telecommunications network that implements a plurality of network slices can include determining a UE-specific probability of usage of each network slice of each network slice of the plurality of network slices based on an analysis of uplink data traffic; receiving a region-specific probability of usage of each network slice of the plurality of network slices, the region-specific probability of usage of each network slice being specific to a region in which the UE is positioned; modifying a network slice cell reselection priority for one or more network slices of the plurality of network slices based on the region-specific probability of usage of each network slice and further based on the UE-specific probability of usage of each network slice; and performing a cell reselection procedure based on the modified network slice cell reselection priority.