Satellite Access Network Device for Remote IoT Connectivity
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Solution Overview
Problem
Non-geostationary synchronous orbit (NGSO) satellites cannot provide end-to-end connections for IoT terminal devices in remote ocean areas due to the unavailability of ground gateway stations, leading to intermittent network connectivity.
Innovation Solution
An access network device integrated on a satellite with a processor that resumes connections with core network devices or terminal devices when they become unreachable, enabling the buffering and forwarding of data upon reconnection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If NGSO satellites provide service coverage to remote ocean areas without ground gateway stations, then network coverage area is improved, but connection reliability deteriorates because end-to-end connections cannot be established
Solution Approach 1:
The satellite performs preliminary actions by buffering data locally when terminal devices are unreachable, preparing for future connection resumption. This allows the satellite to maintain data storage capabilities and connection state information in advance, enabling reliable data transmission once connectivity is restored, thus resolving the contradiction between expanding coverage to remote areas and maintaining connection reliability.
2Duration of action of stationary object
If the satellite buffers and forwards data when connections are interrupted, then data transmission continuity is improved, but device complexity increases due to store-and-forward functionality requirements
Solution Approach 1:
The satellite is designed with multi-functionality, serving both as a communication relay and a data buffering node. By integrating store-and-forward capabilities into the satellite's existing communication infrastructure, the system achieves continuous data transmission without proportionally increasing device complexity, as the satellite performs multiple functions (communication, buffering, forwarding) within a single platform.
3Reliability
If the satellite resumes connections with terminal devices or core network devices when they become unreachable, then connection reliability is improved, but system complexity increases due to connection management overhead
Solution Approach 1:
The satellite implements self-service by autonomously managing connection resumption with terminal devices or core network devices. The satellite monitors connection status, detects unreachable devices, and initiates connection resumption procedures without requiring complex external coordination, thus improving connection reliability while minimizing the increase in system complexity through autonomous operation.
Data Source
AI summary
Provided is an access network device. The access network device is integrated on a satellite and includes a processor. The processor is configured to resume a connection with a second device in a case that a first device is unreachable, wherein the first device is a terminal device, and the second device is a core network device, or, the first device is a core network device, and the second device is a terminal device.