Satellite-Airborne V2X Interface Switching for Low-Latency Reliability
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Solution Overview
Problem
Existing wireless communication networks face challenges in efficiently supporting Vehicle-to-Everything (V2X) communications, particularly in scenarios involving satellite and airborne interfaces, due to limitations in latency, reliability, and data throughput, which are critical for vehicular safety and mission-critical services.
Innovation Solution
Enhanced V2X communications are facilitated through a satellite/airborne interface that integrates with existing 5G NR networks, utilizing PC5 interfaces for sidelink communications, enabling unicast, groupcast, and broadcast modes, and employing advanced radio protocols to support high-reliability and low-latency data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing wireless communication networks are used for V2X communications, then device compatibility and infrastructure availability are maintained, but latency and reliability are insufficient for safety-critical applications
Solution Approach 1:
The patent introduces satellite and airborne nodes as intermediary communication relays between vehicles and the network. These intermediaries establish direct satellite-to-vehicle links or airborne-to-vehicle links, bypassing traditional ground-based infrastructure constraints and reducing communication latency while improving reliability for V2X applications.
Solution Approach 2:
The patent transitions from two-dimensional ground-based wireless communication to three-dimensional spatial communication by utilizing satellite orbits and airborne platforms. This dimensional expansion provides alternative communication paths and reduces dependency on ground infrastructure, thereby improving reliability and reducing latency.
2Reliability
If satellite/airborne interfaces are integrated into 5G NR networks, then communication reliability and latency are improved, but network complexity and integration difficulty increase
Solution Approach 1:
The patent designs the satellite and airborne nodes to implement standardized 5G NR protocol stacks and interface configurations, enabling them to perform multiple functions including direct V2X communication, relay operations, and network coordination. This multi-functionality reduces the need for separate specialized systems and manages complexity through standardization.
Solution Approach 2:
The patent segments the communication system into distinct functional modules: ground-based 5G infrastructure, satellite/airborne intermediaries, and vehicle units. Each segment operates with defined interfaces and protocols, allowing independent optimization and simplifying overall system integration despite the increased complexity.
3Speed
If PC5 interfaces are used for sidelink communications, then direct vehicle-to-vehicle communication is enabled, but coverage area and network integration capabilities are limited
Solution Approach 1:
The patent employs satellite and airborne nodes as intermediaries that receive, relay, and forward PC5 sidelink communications beyond the direct line-of-sight range of vehicles. This extends the effective coverage area of PC5 interfaces while maintaining direct communication capabilities for nearby vehicles.
Solution Approach 2:
The patent extends PC5 sidelink coverage from horizontal ground-based communication to three-dimensional space by utilizing satellite and airborne platforms at elevated positions. This dimensional expansion dramatically increases the coverage area while maintaining direct communication links.
Data Source
AI summary
A system, method and apparatus for mobile communications including sidelink transmissions is provided. A user equipment (UE) maintains a first interface between the first UE and a radio access network (RAN) infrastructure node, a second interface between the first UE and a second UE and a third interface between the first UE and a satellite node or an airborne node. The UE switches between interfaces according to a current connectivity state and based on signal attributes associated with individual interfaces.