Network Slice Admission Control Based on Registered UE Thresholds
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Solution Overview
Problem
In wireless communication networks, the network slice admission control function is often overloaded with signaling transmissions, particularly during new registration or protocol data unit session establishment procedures, leading to inefficiencies.
Innovation Solution
Implementing a method and apparatus that dynamically activate or deactivate admission control modes based on the number of user equipments (UEs) registered with a network slice, sending requests to activate admission control when the number exceeds a threshold and deactivate when it falls below, to optimize signaling and reduce overload.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If admission control is continuously activated for network slice, then reliability of admission control is improved, but signaling overhead increases and network function gets overloaded
Solution Approach 1:
The patent implements dynamic admission control by transitioning between two operational modes: a first mode where admission control is activated and a second mode where it is deactivated. The network function dynamically switches between these modes based on threshold conditions of registered UE counts, thereby adapting the admission control reliability and signaling overhead to current network conditions rather than maintaining constant activation.
Solution Approach 2:
The patent changes the operational parameter of admission control activation/deactivation based on the count of registered UEs. When the UE count exceeds a predefined threshold, the system transitions to activated mode; when it falls below the threshold, it transitions to deactivated mode. This parameter-based switching resolves the contradiction by adjusting admission control intensity according to actual network load.
2Measurement precision
If admission control is activated for each new registration or PDU session establishment, then admission control precision is improved, but the network slice admission control function becomes overloaded with signaling transmissions
Solution Approach 1:
The patent implements periodic activation of admission control based on threshold-based triggers. Instead of continuous activation for every registration or PDU session establishment, the system periodically activates admission control only when the registered UE count exceeds a predefined threshold. This periodic action maintains necessary admission control precision while significantly reducing signaling overhead and preventing network function overload.
Solution Approach 2:
The patent applies partial admission control by deactivating it when the registered UE count is below the threshold. This partial action approach maintains admission control precision when needed (excessive action) while reducing unnecessary processing when network load is low, thereby resolving the contradiction between precision and processing capacity.
Data Source
AI summary
Apparatuses, methods, and systems are disclosed for admission control based on registered user equipments. One method includes receiving, at a first network function (NF), an indication from a second NF to subscribe to notifications for an admission control mode of a network slice. The method includes determining a number of user equipments (UEs) registered with the network slice. The method includes sending a first request to the second NF to activate the admission control mode for the network slice based on the number of UEs registered with the network slice being greater than a threshold value. The method includes sending a second request to the second NF to deactivate the admission control mode for the network slice based on the number of UEs registered with the network slice being less than or equal to the threshold value.