Regenerative Payload Base Station NG Interface Removal in NTN
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Solution Overview
Problem
Existing non-terrestrial network (NTN) systems with regenerative payloads face challenges in maintaining stable base station interfaces due to satellite movement, which disrupts connections between base stations and core network nodes, leading to unreliable communication.
Innovation Solution
A method and device for controlling the interface of a regenerative payload base station in a non-terrestrial network communication system, involving the transmission of NG removal request messages between the regenerative payload base station and the core network entity, followed by a transport network layer (TNL) connection removal operation to manage resources associated with the interface instance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a transparent payload is used in NTN systems, then data relay function is provided, but base station interface stability deteriorates due to satellite movement
Solution Approach 1:
The patent implements dynamic NG interface control by enabling the regenerative payload base station to actively manage and remove NG connections based on real-time satellite position and connectivity status. The base station transitions from a static interface configuration to a dynamic one where interfaces are established, maintained, or removed according to current operational conditions, resolving the contradiction between interface stability and adaptability.
Solution Approach 2:
The patent introduces feedback mechanisms where the regenerative payload base station monitors its own connectivity status and satellite position, then sends NG removal request messages to core network entities when necessary. This feedback loop enables the system to automatically adjust interface configurations based on real-time conditions, maintaining reliability while providing the flexibility needed for mobile satellite operations.
2Adaptability or versatility
If satellite movement is accommodated, then coverage flexibility is improved, but connection continuity deteriorates
Solution Approach 1:
The patent applies preliminary action by having the regenerative payload base station proactively send NG removal request messages before actual disconnection occurs. The base station anticipates connectivity issues based on satellite movement predictions and initiates resource removal operations in advance, preventing connection failures and maintaining continuity while accommodating coverage flexibility.
Solution Approach 2:
The patent introduces the NG removal request message as an intermediary mechanism between the regenerative payload base station and core network entities. This intermediary enables coordinated resource management during satellite movement, allowing the system to maintain connection continuity while achieving coverage flexibility through controlled interface transitions.
3Reliability
If interface resources are maintained, then connection stability is improved, but resource efficiency deteriorates
Solution Approach 1:
The patent implements discarding and recovering by enabling the regenerative payload base station to selectively remove NG interface resources when no longer needed due to satellite movement or connectivity changes. The base station discards redundant interface resources to improve efficiency while recovering stability by re-establishing interfaces when required, achieving a balance between resource efficiency and connection stability.
Data Source
AI summary
Provided are a method and device for performing communication by a regenerative payload base station. The method may include transmitting an NG removal request message to a core network entity, receiving an NG removal response message from the core network entity, and initiating a transport network layer (TNL) connection removal operation for the core network entity and removing resources associated with an interface instance.