Conditional Handover Sets for Reliable High-Speed Route Mobility
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in ensuring accurate signal transmission and reception, particularly in high-speed and high-mobility scenarios, leading to unreliable handovers and cell re-selections, which result in data losses, gaps, and increased power consumption.
Innovation Solution
Configuring wireless devices with information for potential early conditional handovers and cell re-selections based on expected routes, using location data, travel patterns, or device inputs to minimize signaling and improve reliability, especially in high-speed environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional handover methods are used in high-speed scenarios, then signaling is performed in real-time, but handover reliability deteriorates due to rapidly changing channel conditions
Solution Approach 1:
The patent applies preliminary action by configuring conditional handover sets in advance before the actual handover is needed. The network pre-evaluates multiple candidate target cells and prepares handover configurations for them ahead of time, so when handover is triggered, the device can immediately execute without waiting for real-time evaluation and signaling, thus improving reliability in high-speed scenarios.
2Reliability
If conditional handover sets are configured in advance, then handover reliability improves, but device complexity increases due to managing multiple handover configurations
Solution Approach 1:
The patent applies self-service by enabling the wireless device to autonomously manage conditional handover sets. The device independently evaluates whether to execute a conditional handover based on measured signal conditions without requiring continuous network intervention or complex coordination, thereby reducing the perceived complexity while maintaining high reliability.
3Reliability
If frequent cell re-selections are performed to maintain service, then coverage is improved, but power consumption increases significantly
Solution Approach 1:
The patent applies preliminary action by providing cell re-selection assistance information in advance to the wireless device. This information includes pre-evaluated candidate cells and their characteristics, allowing the device to perform efficient cell re-selections without needing to extensively measure and evaluate all possible neighbor cells, thus maintaining service continuity while reducing power consumption.
4Reliability
If network provides comprehensive cell information for re-selection, then service retention improves, but signaling overhead and network load increase
Solution Approach 1:
The patent applies the extraction principle by selectively providing only the most relevant cell re-selection assistance information to the wireless device, rather than transmitting comprehensive information about all cells. The network extracts and provides key parameters for candidate cells that are most likely to be selected, reducing signaling overhead while maintaining effective service retention.
Data Source
Figure 1~2
Figure 3
Figure 4~6
AI summary
This disclosure relates to techniques for performing conditional handovers and cell re-selections along known routes. A cellular base station may select a conditional handover set for a wireless device. The conditional handover set may include information for multiple conditional handovers. The wireless device may receive the conditional handover set. The wireless device may perform conditional handover to at least a first cell indicated in the conditional handover set based at least in part on the conditional handover set.