Satellite Base Station Store and Forward Data Transmission
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Solution Overview
Problem
Non-terrestrial wireless communication networks face challenges in maintaining data transmission when satellite base stations operate in store and forward mode without an active feeder link to the ground station.
Innovation Solution
The implementation of cellular IoT (CIoT) data transmission over the control plane or user plane, allowing user equipment to send data to satellite base stations in store and forward mode without core network involvement, using early data transmission (EDT) mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If satellite base station operates in store and forward mode without active feeder link, then data transmission continuity is improved, but network complexity increases
Solution Approach 1:
The patent extracts the core data transmission function from the satellite base station, allowing it to operate autonomously in store and forward mode without requiring continuous connection to the core network. The satellite stores data packets locally and forwards them when feeder link becomes available, separating the transmission continuity function from the network connection requirement.
Solution Approach 2:
The satellite base station acts as an intermediary between user equipment and the core network. It receives data from UEs, stores it in its buffer, and forwards it to the ground station when the feeder link is available, mediating the communication without requiring constant core network involvement.
2Speed
If core network involvement is eliminated for data transmission, then transmission speed is improved, but reliability decreases
Solution Approach 1:
The satellite base station performs preliminary actions by establishing local buffering capabilities and autonomously managing data storage and forwarding decisions. This preliminary setup allows rapid data transmission without real-time core network approval, while reliability is maintained through configured forwarding rules and periodic core network synchronization.
3Adaptability or versatility
If store and forward mode is implemented, then adaptability to remote areas is improved, but device complexity increases
Solution Approach 1:
The satellite base station implements local quality by providing autonomous store and forward functionality specifically at the satellite level, where it is most needed for remote area coverage. The core network maintains its simplified architecture, while the satellite gains enhanced local capabilities to serve areas without continuous network connectivity.
Data Source
AI summary
The present application relates to devices and components, including apparatus, systems, and methods for non-terrestrial networks with store and forward operation.