Fast Dormancy Control via User Interactivity Detection
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Solution Overview
Problem
UMTS networks face increased signaling load due to frequent state transitions of user equipment (UE) between dedicated channels and idle states, leading to high RNC processing load and battery consumption, despite efforts to conserve resources through fast dormancy and inactivity timers.
Innovation Solution
Implementing a user interactivity engine that monitors and categorizes data flows as interactive or non-interactive, enabling data bundling and controlling fast dormancy based on user interaction, thereby reducing unnecessary signaling events and optimizing resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If fast dormancy is implemented to transition UE directly from DCH to IDLE, then battery life is conserved, but RNC processing load increases due to frequent connection reestablishment
Solution Approach 1:
The patent implements dynamic adjustment of fast dormancy behavior based on user interactivity detection. When user activity is detected, the system dynamically disables fast dormancy to maintain DCH state, preventing unnecessary connection reestablishment. When no user activity is detected, fast dormancy remains enabled to conserve battery. This dynamic adaptation resolves the contradiction by making the system flexible rather than static.
Solution Approach 2:
The patent introduces a feedback mechanism where the system monitors user interactivity and uses this information to control fast dormancy behavior. The detection of user activity provides feedback that triggers disabling of fast dormancy, creating a closed-loop control system that adapts to actual usage patterns and optimizes the balance between battery conservation and RNC load management.
2Productivity
If inactivity timers are set to short values for resource efficiency, then resource allocation is optimized, but signaling events increase due to frequent state transitions
Solution Approach 1:
The patent applies preliminary action by detecting user interactivity before the inactivity timer expires. When user activity is detected, the system proactively maintains the DCH state and prevents the state transition that would otherwise occur when the timer expires. This preliminary detection and intervention avoids unnecessary state transitions and reduces signaling events while maintaining resource efficiency.
3Ease of operation
If data connection is reestablished frequently after IDLE state, then data communication is maintained, but power consumption increases in RNC
Solution Approach 1:
The system uses feedback from user interactivity detection to control connection management. When user activity is detected, the feedback triggers maintenance of the DCH state, avoiding IDLE transitions and subsequent reestablishment. This eliminates unnecessary RNC power consumption while ensuring data communication is maintained when actually needed.
Solution Approach 2:
The system enables self-service by having the UE monitor its own user interactivity and autonomously control fast dormancy behavior. The UE detects its own usage patterns and adjusts connection management accordingly, reducing unnecessary RNC involvement and power consumption while maintaining data communication capability.
Data Source
AI summary
Data bundling and fast dormancy can be controlled based on user interaction with a user equipment (UE). Moreover, the subject system provides a balance between saving battery power of the UE and reducing signaling and processing load in a radio resource controller (RRC). Specifically, the system observes user inputs and data flow requests to identify “interactive” and “non-interactive” data flows. On receiving a data flow request, the system determines whether the data flow can be bundled together and transmitted over a single connection with disparate data flows, based on the classification of the data flow. Additionally, on completion of a data flow, the system determines whether a fast dormancy timer can be disabled/delayed to transmit a next data flow over the current connection, based on the classification of the data flow.