Network Device Session Duration Estimation for Roaming Decisions
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Solution Overview
Problem
Conventional network infrastructure lacks the ability to make intelligent decisions regarding client device association with access points during delay-sensitive or disruption-sensitive transactions, leading to poor call quality if not moved and degradation during transition if moved.
Innovation Solution
A network device estimates the session duration and quality of access points to determine whether to associate a client device with a different access point, considering the cost of disruption and session length, using historical data, calendar information, and quality metrics like MOS scores.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network infrastructure moves a client device to another radio during an active call, then call quality improves in the long term, but call quality degrades momentarily during the transition
Solution Approach 1:
The system performs preliminary estimation of the remaining session duration before making a roaming decision. By evaluating whether the remaining session time exceeds a threshold, the network proactively determines if a radio transition is worthwhile, avoiding transitions for short-lived sessions that would cause unnecessary disruption.
Solution Approach 2:
The system dynamically adjusts the roaming decision based on real-time conditions, specifically the estimated remaining session duration. The decision to allow or prevent roaming is not static but adapts to the current session state, enabling optimal balance between quality improvement and disruption minimization.
2Loss of time
If the network infrastructure does not move a client device during an active call, then call quality is maintained, but poor call quality persists for extended durations
Solution Approach 1:
The system performs preliminary estimation of the remaining session duration before making a roaming decision. By evaluating whether the remaining session time exceeds a threshold, the network proactively determines if a radio transition is worthwhile, avoiding transitions for short-lived sessions that would cause unnecessary disruption.
Solution Approach 2:
The system uses feedback from session duration monitoring and quality assessments to make informed roaming decisions. By continuously evaluating the remaining session time and current call quality, the network adjusts its roaming policy to ensure transitions occur only when beneficial.
3Reliability
If the network infrastructure makes frequent roaming decisions, then call quality can be optimized, but system complexity and processing overhead increase
Solution Approach 1:
The system performs preliminary estimation of the remaining session duration before making a roaming decision. By evaluating whether the remaining session time exceeds a threshold, the network proactively determines if a radio transition is worthwhile, avoiding transitions for short-lived sessions that would cause unnecessary disruption.
Solution Approach 2:
The system changes the decision parameter from continuous quality optimization to a threshold-based approach. By introducing a minimum session duration threshold, the complexity of continuous optimization is reduced while maintaining effective quality control for significant sessions.
Data Source
AI summary
The present disclosure discloses a method and a network device for client association management based on estimated session duration. Specifically, a network device determines that a client device is on an active session. The client device is associated with a first access point of a plurality of access points. The network then estimates a remaining duration of the active session to obtain an estimated remaining duration. Responsive at least to the estimated remaining duration of the active session being greater than a threshold value, the network device causes the client device to associate with a second access point different than the first access point. Responsive at least to the estimated remaining duration of the active session being less than the threshold value, the network device refrains from causing the client device to associate with the second access point.