Satellite-Coordinated D2D Data Exchange for UAVs
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Solution Overview
Problem
Existing communication systems face challenges in providing reliable data exchange between communication devices in areas with no or limited network access, particularly for UAVs used in commercial applications.
Innovation Solution
A method and arrangement that utilize satellite transmissions to coordinate data exchange between communication devices, specifically determining a time interval for Device-to-Device (D2D) communication based on the expected location of the second communication device within D2D communication range of the first communication device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If devices constantly scan for other devices to establish store and forward connections in DTN, then data exchange can occur in areas with limited network access, but power consumption increases and device complexity increases
Solution Approach 1:
The satellite transmits scheduling information and conditions for data exchange in advance, allowing devices to know beforehand when and where to meet for D2D communication. This eliminates the need for constant scanning while ensuring reliable data exchange, as devices can enter sleep mode between scheduled communication windows.
Solution Approach 2:
The satellite acts as an intermediary that coordinates D2D communication between devices. Instead of devices directly scanning and connecting with each other, the satellite provides scheduling information that mediates the connection process, reducing device complexity and power consumption while maintaining reliability.
2Reliability
If devices use store and forward fashion for data exchange in DTN, then network coverage can be extended to areas without continuous connectivity, but delivery delay becomes unpredictable and device complexity increases
Solution Approach 1:
The satellite transmits scheduling information in advance, allowing devices to plan their D2D communication meetings ahead of time. This enables predictable delivery delays since devices know exactly when to exchange data, eliminating the unpredictable waiting periods inherent in traditional store-and-forward DTN approaches.
3Reliability
If UAVs are used as mobile base stations to provide network coverage, then network connectivity can be provided in areas with irregular demand, but costs increase
Solution Approach 1:
The patent extracts the core function of providing network coverage from expensive mobile UAV base stations and implements it through simple D2D communication between devices. Devices only need to establish direct peer-to-peer connections when needed, rather than maintaining full base station functionality, significantly reducing operational costs while maintaining connectivity in areas with irregular demand.
Data Source
AI summary
A method is executable by a first communication device, where the method comprise listening to satellite transmissions, which is transmitting conditions for allowing the first communication device to exchange data with a second communication device, recognizing conditions for allowing exchange of data between the first and the second communication devices, determining requirements for data exchange under the mentioned conditions, and determining according to the conditions, a time interval within which the second communication device is expected to be located within device-to-device, D2D, communication range of the first communication device, after which data is exchanged between the first and the second communication device, within the determined time interval.