RRC State Timer Adjustment for Wireless Network Load Balancing
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Solution Overview
Problem
In wireless networks, particularly 3G networks, the transition of mobile devices between Radio Resource Control (RRC) states results in signaling events that consume valuable radio bandwidth and impose a processing load on the Radio Network Controller, with timer values needing to be carefully set to balance network load and resource utilization, as they vary based on application traffic and time of day.
Innovation Solution
A system comprising a controller and network monitor that dynamically adjusts timer values for RRC state transitions based on network-layer signaling events and application-layer traffic, allowing the Radio Access Network to manage RRC states effectively and adapt to varying network loads by determining overhead and bearer loads and generating instructions to adjust timer values accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If timer values are set low to reduce radio bandwidth waste, then radio resource utilization improves, but network-layer signaling load increases due to frequent RRC transitions
Solution Approach 1:
The patent implements dynamic timer value adjustment by monitoring application-layer traffic patterns and adapting RRC state transition timing accordingly. The system transitions from static timer configurations to dynamic adaptation, where timer values are modified based on real-time traffic analysis, thereby optimizing the balance between radio resource utilization and signaling load reduction.
Solution Approach 2:
The system changes the timer parameter values based on observed traffic patterns. By analyzing application-layer traffic characteristics and adjusting the RRC inactivity timer values accordingly, the system optimizes network performance for different traffic types and conditions, resolving the contradiction between resource efficiency and signaling overhead.
2Productivity
If timer values are set high to reduce signaling events, then network load decreases, but radio resources are wasted due to idle devices remaining in active states
Solution Approach 1:
The system dynamically adjusts timer values based on real-time traffic pattern analysis. Instead of using fixed high timer values, the system adapts timing parameters to actual device behavior and traffic characteristics, freeing radio resources when appropriate while maintaining network capacity during active periods.
Solution Approach 2:
The patent implements a feedback mechanism that monitors application-layer traffic patterns and uses this information to adjust RRC state transition timing. The system continuously observes device activity and modifies timer values accordingly, creating a closed-loop control system that optimizes the balance between resource utilization and signaling load.
3Productivity
If RRC state transitions are optimized for one application type, then performance for that application improves, but performance for other application types may deteriorate
Solution Approach 1:
The system applies different timer value configurations tailored to specific application types and device behavior patterns. By analyzing traffic characteristics and applying localized optimization strategies for different application categories, the system maintains high performance across diverse workloads rather than using a one-size-fits-all approach.
Solution Approach 2:
The patent creates a universal timer adjustment mechanism that handles multiple application types effectively. The system monitors and adapts to various traffic patterns (video, audio, data, etc.) using a unified framework, enabling the network to optimize performance across different application categories simultaneously through intelligent pattern recognition and adaptive timing.
Data Source
AI summary
Systems and methods are provided for adjusting Radio Resource Control (RRC) timers in a Radio Access Network (RAN). The system manages radio communications between a mobile device and a base station, and further transitions the mobile device between Radio Resource Control (RRC) states based upon application-layer data traffic for the mobile device and a timer value. Additionally, the system determines an overhead load based on network-layer signaling events associated with at least one RRC transition for the mobile device, and determines a bearer load based on the application-layer data traffic for the mobile device. Based upon the overhead load and the bearer load, the system adjusts the timer value.