Vehicle-Mounted IAB Node Data Buffering for Stable Connectivity
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Solution Overview
Problem
Existing radio communication systems struggle to maintain effective data communication when IAB nodes are installed in vehicles that are constantly moving, as they require appropriate data handling to adapt to the movement and ensure seamless connectivity with terminals.
Innovation Solution
A radio communication node installed in a vehicle, functioning as an IAB node, which includes a radio transmitting unit, receiving unit, data retention unit, UL control unit, and DL control unit, capable of temporarily storing and transmitting data when high-speed communication is available, and a terminal that determines the optimal connection destination based on node information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If an IAB node is installed in a moving vehicle to provide wireless communication services, then the coverage area and mobility are improved, but maintaining stable data communication becomes difficult due to constant movement
Solution Approach 1:
The patent applies preliminary action by storing data in advance at the IAB node before the vehicle moves out of communication range. The node pre-accumulates data packets in its storage unit, so that when terminal devices need communication services during movement, the data can be transmitted immediately without interruption, thus maintaining communication reliability while expanding coverage area.
2Speed
If data is transmitted in real-time from a stationary base station to moving terminals, then communication speed is improved, but connection stability deteriorates due to vehicle movement
Solution Approach 1:
The patent uses the IAB node in the moving vehicle as an intermediary between stationary base stations and terminal devices. The node receives data from base stations, stores it locally, and transmits it to terminals, acting as a mobile relay that maintains connection stability while enabling high-speed communication through efficient data forwarding.
3Adaptability or versatility
If the IAB node stores large amounts of data for mobile terminals, then data availability is improved, but the device complexity and storage requirements increase
Solution Approach 1:
The patent applies local quality by implementing storage and data management functions specifically at the moving IAB node where they are most needed, rather than distributing complexity throughout the entire network. The node selectively stores data based on local communication needs and terminal requests, optimizing storage usage while maintaining high data availability for mobile terminals.
Data Source
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AI summary
A radio communication node (300) receives downlink data for UE (200) from a network in an area where high-speed data communication is possible. The radio communication node (300) transmits downlink data that is retained to UE (200) when radio communication with UE (200) is made possible by a movement of the radio communication node (300) or UE (200).