Redundant PDU Session Coordination for Zero-Interruption Handover
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Solution Overview
Problem
Existing mobile communication systems face challenges in efficiently coordinating and adapting between multiple network connections to ensure uninterrupted service for user equipment with redundant protocol data unit sessions, particularly in scenarios involving UE mobility or channel degradation, without introducing significant standardization impacts.
Innovation Solution
Enhanced UE measurement and reporting mechanisms are introduced, allowing user equipment to expose relevant information to secondary networks, enabling timely coordination and adaptation between primary and secondary networks to prevent simultaneous handovers and maintain service continuity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UE measurement and reporting mechanisms are enhanced to expose information to secondary networks, then coordination and adaptation between networks is improved, but device complexity and standardization efforts increase
Solution Approach 1:
The patent implements preliminary action by having the UE proactively report measurement information to the secondary network before handover events occur. The UE is configured to expose measurement reports, event triggers, and timer procedures to the secondary network in advance, enabling the secondary network to prepare coordination actions ahead of time, thus preventing service interruption without requiring complex real-time coordination mechanisms
Solution Approach 2:
The patent uses the UE itself as an intermediary by configuring it to forward measurement and reporting information from the primary network to the secondary network. This intermediary approach enables network coordination without requiring direct complex signaling between networks, as the UE acts as a natural mediator that already possesses the necessary measurement data
2Reliability
If networks coordinate to prevent simultaneous handovers, then service interruption is minimized, but signaling overhead and coordination complexity increase
Solution Approach 1:
The secondary network performs preliminary action by receiving and analyzing UE measurement reports in advance to identify potential handover events. Based on this early information, the secondary network can proactively configure adaptation actions and prepare coordination strategies before the primary network initiates handover, thereby preventing simultaneous handovers without requiring complex real-time interaction mechanisms
Solution Approach 2:
The patent implements feedback by having the UE continuously report measurement information, event triggers, and timer procedures to the secondary network. This feedback loop enables the secondary network to monitor the UE's state and primary network behavior, allowing it to adjust its coordination actions dynamically based on actual network conditions and UE measurements
3Productivity
If UE exposes measurement reports to secondary network, then timely adaptation is enabled, but information security and privacy concerns arise
Solution Approach 1:
The patent applies local quality by selectively exposing only specific measurement information to the secondary network rather than all UE data. The network configuration specifies exactly which measurement reports, event triggers, and timer procedures should be exposed to the secondary network, allowing targeted information sharing that enables timely adaptation while minimizing unnecessary information exposure and associated security risks
Data Source
AI summary
A method may include establishing a second communication session at a second network with a user equipment that currently has a first communication session with a first network. The method may also include receiving a report from the user equipment including information related to measurement and reporting of the user equipment on the first network. The method may further include, based on the report, performing an adaptation of an operation and performance of the second communication session for the user equipment.