Dynamic UE State Transitions in Wireless Networks
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Solution Overview
Problem
Conventional Radio Access Network (RAN) technologies manage state transitions of User Equipment (UE) using a single, manually configured inactivity timer, which can lead to suboptimal radio link capacity and increased control plane loading due to inefficient resource management, especially with the diverse range of applications and services on modern smartphones.
Innovation Solution
A system and method that dynamically and automatically control individual UE connections based on the applications and services they carry by monitoring application flows and session states, transitioning between IDLE and CONNECTED states proactively to optimize resource usage and reduce control plane loading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single, manually configured inactivity timer is used to manage state transitions for all UEs, then the network structure remains simple and easy to operate, but radio link capacity decreases and control plane loading increases due to inefficient resource management
Solution Approach 1:
The patent segments the single global inactivity timer into multiple UE-specific inactivity timers. Each UE is assigned its own timer that is dynamically configured based on application type, service requirements, and network conditions. This segmentation allows independent optimization of state transition timing for different UEs without affecting others, thereby increasing radio link capacity while maintaining operational simplicity through automated management.
Solution Approach 2:
The patent implements dynamic inactivity timer configuration where timers are not fixed but adapt based on real-time conditions. The system dynamically adjusts timer values according to application characteristics (e.g., messaging vs. streaming), network load, and UE behavior patterns. This dynamic approach optimizes resource allocation and reduces control plane loading by preventing premature or delayed state transitions.
2Reliability
If the inactivity timer is set for a long value to maintain connections, then connection stability improves, but radio resources are occupied unnecessarily reducing radio link capacity
Solution Approach 1:
The patent applies local quality by tailoring inactivity timer values to individual UE characteristics and application types. Instead of a uniform long timer for all UEs, the system configures optimized timer durations based on specific application requirements (e.g., shorter timers for real-time messaging, longer timers for bulk data transfers). This localized optimization maintains connection stability where needed while freeing resources elsewhere to increase overall radio link capacity.
3Productivity
If the inactivity timer is set for a short value to free resources quickly, then radio link capacity increases, but connections are torn down prematurely causing frequent re-establishments and increased control plane loading
Solution Approach 1:
The patent implements feedback mechanisms where the network continuously monitors UE activity patterns, application state, and connection behavior. Based on this feedback, the system dynamically adjusts inactivity timer values and state transition decisions. This feedback loop prevents premature connection terminations by adapting timer settings to actual usage patterns, thereby maintaining connection stability while optimizing resource utilization to support high radio link capacity.
Data Source
AI summary
A system and method is disclosed for individually controlling User Equipment (UE) connections, dynamically and automatically, based on the applications and/or services that the connections carry. An eNodeB or other radio base station (RBS) monitors established connections between the UE and the RBS to detect applications running within those connections. Based on the stateful information of applications, the present invention proactively controls the state transitions of individual UEs between the CONNECTED and IDLE states thereby increasing radio link capacity and reducing control plane loading.