Vehicle Handover via Secondary Node in Dual Connectivity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In vehicle-to-infrastructure (V2I) communication networks, the communication quality of vehicles is compromised when there is no nearby infrastructure or when the infrastructure is not in good condition, leading to unreliable data transmission.
Innovation Solution
A system and method for handover that establishes dual connectivity between a vehicle terminal and both a macro evolved Node B (MeNB) and a secondary evolved Node B (SeNB), with the SeNB being either a fixed installation or a secondary vehicle terminal meeting specific conditions, such as proximity and speed matching, to ensure seamless communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle communicates only with fixed infrastructure (MeNB), then the system complexity is low, but the communication reliability deteriorates when infrastructure is absent or in poor condition
Solution Approach 1:
The patent introduces a secondary evolved Node B (SeNB) as an intermediary communication entity between the vehicle terminal and the network. The SeNB can be either a fixed infrastructure or another vehicle terminal, providing an alternative communication path when the primary MeNB connection is unavailable or degraded, thus improving communication reliability without requiring complete system redesign
Solution Approach 2:
The SeNB is designed with multi-functionality, serving as a backup communication node that can function both as a fixed infrastructure element and as a mobile vehicle terminal. This universal design allows the system to adapt to different deployment scenarios (fixed infrastructure vs. vehicle-to-vehicle communication) while maintaining a unified architecture, managing complexity through role flexibility
2Reliability
If the vehicle uses a single connection mode, then the device complexity is low, but the communication quality deteriorates in areas with poor infrastructure
Solution Approach 1:
The patent segments the communication connection into two independent parts: a primary connection with the MeNB and a secondary connection with the SeNB. This segmentation allows the vehicle terminal to maintain separate control planes for each connection, managing complexity through modular connection handling while enabling seamless failover and load balancing between the two connection types
Solution Approach 2:
The system implements dynamic connection management where the vehicle terminal can flexibly switch between single-connection and dual-connection modes based on infrastructure availability and communication requirements. The dual connectivity mode is activated dynamically when needed, allowing the system to adapt connection complexity to actual operational conditions rather than maintaining fixed complexity
3Adaptability or versatility
If the vehicle terminal switches between different MeNBs, then the adaptability to infrastructure changes is improved, but the handover reliability deteriorates when no infrastructure is nearby
Solution Approach 1:
The SeNB acts as a mediator during handover operations, providing a stable communication anchor when the vehicle moves between MeNB coverage areas. If the SeNB is another vehicle terminal, it maintains continuous connectivity during the handover process, ensuring handover reliability even in areas where fixed infrastructure is sparse or unavailable
Solution Approach 2:
The system establishes the secondary connection with the SeNB in advance before handover is needed. This preliminary action ensures that a backup communication path is already available and configured, allowing the vehicle terminal to perform handovers reliably without waiting for infrastructure conditions to improve or for new connections to be established during the handover process
Data Source
AI summary
The present disclosure relates to systems and methods for a handover. The methods may include establishing a connection between a vehicle terminal and a first macro evolved Node B (MeNB) and a connection between the vehicle terminal and a secondary evolved Node B (SeNB), the vehicle terminal in a dual connectivity mode with the first MeNB and the SeNB; receiving, by the vehicle terminal, a handover command from the first MeNB; and disconnecting, based on the handover command, the vehicle terminal from the first MeNB and establishing synchronization between the vehicle terminal and a second MeNB, wherein the connection between the vehicle terminal and the SeNB is maintained. The SeNB is a secondary vehicle terminal meeting a preset condition or an SeNB installed at a fixed location.