Multi-RAT Selection for V2X Service Continuity and Resource Efficiency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The increasing use of 3GPP LTE systems by devices such as IoT UEs and V2X communications has strained network resources and increased communication complexity, particularly in managing diverse applications and rapidly moving vehicles.
Innovation Solution
Implementing a system that enables radio access technology (RAT) selection and transition across multiple RATs, including LTE, LTE-A, 5G, and WLAN networks, using management objects and V2X communications to optimize network resource utilization and communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple radio access technologies (RATs) are deployed to support diverse applications and increasing network usage, then network capacity and service diversity are improved, but network resource management complexity and communication overhead increase
Solution Approach 1:
The patent segments network resource management by introducing separate management entities for different RATs (LTE and WLAN) and dividing the management functions into radio resource management (RRM) and radio resource control (RRC) layers. This segmentation allows independent optimization of each RAT while reducing overall management complexity through modular architecture.
Solution Approach 2:
The patent introduces measurement report messages as intermediary carriers that transmit network measurement information between UEs and network management entities. These intermediaries facilitate coordinated multi-RAT resource management by enabling information exchange without requiring direct complex interactions between different RAT management systems.
2Productivity
If network measurement and management mechanisms are enhanced to optimize multi-RAT resource allocation, then resource utilization efficiency is improved, but signaling overhead and communication latency increase
Solution Approach 1:
The patent merges measurement reporting functions across multiple RATs into a unified measurement report message structure. By combining LTE and WLAN measurement information into single signaling messages, the patent reduces the number of separate signaling exchanges required, thereby decreasing overall signaling overhead and communication latency while maintaining comprehensive resource management capabilities.
3Reliability
If seamless RAT transition mechanisms are implemented to maintain continuous connectivity, then service continuity is improved, but handover signaling complexity and transition overhead increase
Solution Approach 1:
The patent implements preliminary measurement and evaluation actions before RAT handover is triggered. UEs continuously measure and report network conditions in advance, allowing the network to pre-evaluate suitable target RATs and prepare handover parameters. This preliminary action enables seamless transitions by reducing last-minute decision complexity and ensuring service continuity through proactive handover preparation.
Data Source
AI summary
Systems and methods of providing a V2X communications are generally described. A geographically-limited, operator-independent mapping table is used that maps between groups of V2X applications each associated with a different application category and a different RAT preferred for the V2X application category. Each grouping is based on fulfillment of one or more KP Is for the associated V2X application category. Multiple RA Ts are prioritized if able to fulfill the KP Is. The mapping table is modified based on the RATs supported by the V2X UE. Carrier aggregation is used when simultaneous transmission on different RATs is desired.