Dynamic Service Continuity Threshold Adjustment
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Solution Overview
Problem
Current wireless communication networks lack dynamic adjustment of service continuity thresholds for multimedia sessions, leading to unnecessary handovers between packet-switched and circuit-switched transports, which causes service disruptions and audible distortions during voice calls, especially when data services are interrupted.
Innovation Solution
Implementing a method to dynamically adjust the service continuity threshold based on the robustness of the media configuration in use, such as packet loss tolerance, by receiving and analyzing robustness information for available media configurations and setting the threshold accordingly to optimize the switchover between packet-switched and circuit-switched transports.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a static service continuity threshold is used for all media configurations, then the system is simple to operate, but unnecessary handovers occur causing service disruptions
Solution Approach 1:
The patent implements dynamic adjustment of the service continuity threshold based on the robustness characteristics of the detected media configuration. Instead of using a fixed static threshold, the system adapts the threshold value according to the packet loss tolerance and other robustness parameters of the active media configuration, thereby optimizing service continuity while maintaining operational simplicity through automated adaptation.
Solution Approach 2:
The system continuously monitors the media configuration in use and its robustness characteristics, then feeds this information back to adjust the service continuity threshold accordingly. This closed-loop feedback mechanism ensures that the threshold is optimally adapted to the current media configuration, preventing unnecessary handovers while maintaining reliable service continuity.
2Area of stationary object
If the service continuity threshold is lowered to extend LTE coverage, then more connections are retained at lower signal quality, but packet loss increases affecting media quality
Solution Approach 1:
The patent changes the service continuity threshold parameter dynamically based on the robustness characteristics of the media configuration. By detecting whether the media configuration has high or low packet loss tolerance, the system adjusts the threshold to extend LTE coverage when using robust configurations while maintaining higher thresholds for sensitive configurations, thus expanding coverage area without compromising media quality.
3Reliability
If handover to circuit-switched transport is initiated early to ensure service continuity, then service disruption is reduced, but data services are interrupted unnecessarily
Solution Approach 1:
The system dynamically changes the service continuity threshold parameter based on the detected media configuration's robustness. For media configurations with high packet loss tolerance, the threshold is set to allow later handover, thereby maintaining data service availability. For configurations with low tolerance, the threshold triggers earlier handover to ensure voice call continuity, thus optimizing both voice and data service performance.
Data Source
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AI summary
In one aspect, this disclosure details methods and apparatuses for influencing the service continuity threshold used for switching a multimedia session between Packet-Switched (PS) transport and Circuit-Switched (CS) transport, in dependence on the "robustness" of the media configuration in use for the multimedia session. Robustness, for example, may be defined in terms of packet loss tolerance, and it will be understood that the media configurations available for a given multimedia session may have different levels of absolute or relative robustness and that the media configuration selected for use in a multimedia session may change during the multimedia session. Correspondingly, the approaches proposed herein provide mechanisms for dynamically adjusting the service continuity threshold in dependence on which media configuration is currently in use for the multimedia session.