Network Handover Prioritization for SRVCC Devices
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Solution Overview
Problem
Current network handover technologies do not effectively prioritize mobile devices based on their capability types, leading to increased latency and potential call drops for devices with SRVCC capability during handovers from LTE to legacy networks, which significantly impacts user experience.
Innovation Solution
Assigning priority to mobile devices based on their capability types, with higher priority for SRVCC devices and lower priority for CSFB devices, allowing for prioritized handovers to minimize latency and ensure seamless voice call transfers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If network handovers are processed in the order of receipt without prioritization, then the system maintains simple processing logic, but latency increases and call drops occur for SRVCC devices
Solution Approach 1:
The patent applies local quality by differentiating handover processing based on device capability types. SRVCC-capable devices receive high-priority processing with dedicated resources, while non-SRVCC devices receive standard processing. This localized quality enhancement ensures critical voice calls maintain continuity without requiring all devices to undergo complex prioritization mechanisms.
Solution Approach 2:
The system changes the parameter of handover processing priority based on device capability classification. By identifying SRVCC-capable devices and assigning them high-priority status, the system dynamically adjusts processing parameters to reduce latency for voice-critical handovers while maintaining standard processing for data-only handovers.
2Loss of time
If priority-based handover processing is implemented, then latency is reduced for high-priority devices, but system complexity increases
Solution Approach 1:
The patent segments handover processing into distinct priority levels based on device capability types. By creating separate processing queues for high-priority (SRVCC) and standard-priority devices, the system reduces latency for critical handovers without requiring complete redesign of the entire handover mechanism. This segmentation allows complex prioritization logic to be isolated to specific device categories.
Solution Approach 2:
The system performs preliminary classification of devices by capability type before handover processing begins. By identifying SRVCC-capable devices in advance and pre-assigning them high-priority status, the system prepares critical handovers for faster processing without adding complexity during the actual handover execution phase.
3Ease of operation
If all devices receive equal handover processing, then system operation is simplified, but user experience quality deteriorates for voice calls
Solution Approach 1:
The patent enhances local quality by providing differentiated handover processing specifically for SRVCC-capable devices involved in voice calls. While the overall system maintains relatively simple operation, critical voice handovers receive enhanced processing with priority queuing and resource allocation, ensuring call continuity without requiring complete system complexity.
Solution Approach 2:
The system introduces an intermediary classification mechanism that identifies SRVCC-capable devices and routes them through priority processing channels. This intermediary layer maintains simplicity for the majority of handovers while providing enhanced processing for voice-critical cases, balancing operational ease with service reliability.
Data Source
AI summary
Systems, methods, and computer-readable media for prioritizing a handover from an LTE network to a legacy network are provided. The method includes receiving, at a management component, a message from a mobile device. The message communicates a capability type associated with the mobile device. Based, in part, on this capability type, the management component assigns a priority to the mobile device. According to the assigned priority, the management component prioritizes the handover of the mobile device from the LTE network to the legacy network. This method reduces the latency for network handovers of mobile devices that are assigned a high priority.