Autonomous Handover Decision for Mobile Base Stations
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Solution Overview
Problem
In mobile communication systems, especially in non-terrestrial networks where base stations are moving at high speeds or are far away from communication apparatuses, existing technologies often result in low-quality communication due to frequent or failed handovers between base stations.
Innovation Solution
A communication apparatus is equipped with an acquisition unit to gather switching information from connected base stations, a determination unit to decide on switching, and a connection unit to autonomously switch to a new base station based on this information, without relying on explicit handover commands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If base station or communication apparatus moves at high speed or base station is located far away, then coverage area is extended, but handover switching between base stations becomes frequent or fails
Solution Approach 1:
The communication apparatus performs measurements on neighboring base stations and prepares handover candidate information in advance, before actual handover is needed. This preliminary preparation allows the apparatus to quickly execute handover when conditions change, reducing handover failures in high-speed or long-distance scenarios.
Solution Approach 2:
The communication apparatus autonomously determines handover timing and executes connection to target base stations based on its own measurements and decisions, rather than relying solely on network-controlled handover commands. This self-service capability enables faster response to changing conditions.
2Speed
If handover switching is performed frequently, then mobility is supported, but communication quality deteriorates
Solution Approach 1:
The communication apparatus continuously measures signal qualities of serving and neighboring base stations, providing feedback information to itself for autonomous handover decisions. This feedback mechanism enables optimized handover timing that balances mobility support with communication quality maintenance.
Solution Approach 2:
The handover decision-making process is made dynamic and adaptive, allowing the communication apparatus to adjust handover timing based on real-time measurement results and channel conditions, rather than following fixed network commands. This dynamic approach prevents unnecessary handovers while supporting mobility.
3Reliability
If autonomous determination of handover is implemented, then handover failure rate is reduced, but device complexity increases
Solution Approach 1:
The communication apparatus is equipped with autonomous handover determination capabilities, including measurement functions and decision-making logic, enabling it to self-manage handover processes without heavy reliance on network control. This self-service approach improves handover reliability while keeping the added complexity manageable.
Data Source
AI summary
A communication apparatus includes an acquisition unit to acquire, from a base station apparatus being connected, switching information including information used for wireless communication with a movably configured base station apparatus to be a switching destination candidate, a determination unit configured to determine whether or not to switch a base station apparatus to be a connection destination, and a connection unit configured to, upon determining by the determination unit to switch the base station apparatus to be the connection destination, execute connection to the base station apparatus to be the switching destination candidate on a basis of the switching information.