NTNPhone: Smartphones Connectés par Satellite et Vocodeurs Bas Débit

NTNPhone définit les APIs d'OS et vocodeurs pour les appels vocaux et messages SOS par satellite sur smartphones.

NTNPhone Satellite Voice & SOS Operating System Architecture

Native operating system integration managing RF pointing guides and low-rate vocoding

Central System: Native AR Sky Guide UI - Augmented reality compass guiding user to overhead LEO satellite

Network Nodes

Native AR Sky Guide UI
Enhanced Voice Services (EVS) Engine
SOS Emergency Protocol Daemon
3GPP NTN S-Band Transceiver

Architectural Protocol Layers

Spaceborne PHY/MAC Layer (3GPP Rel-17 TS 38.300): Doppler compensation, HARQ disabling, and timing advance extension.
Orbital Mesh Routing (CCSDS / Delay-Tolerant Networking): Dynamic topology routing over intermittent laser crosslinks.
Regenerative Core Processing (OpenRAN / 3GPP CU-DU Split): Onboard user plane function (UPF) local breakout.

Key Metrics: < 18ms (LEO Orbit-to-Ground Roundtrip) | 100 Gbps (Optical Crosslink Throughput) | ±48 kHz (Doppler Shift Compensation) | 99.999% (Orbital Constellation Availability)

Smartphones Connectés par Satellite, Appels Vocaux Orbitaux & Messagerie d'Urgence

Core Engineering Areas

Ultra-Low Bitrate Neural Vocoders (1.2 - 2.4 kbps) — Core engineering and protocols for Ultra-Low Bitrate Neural Vocoders (1.2 - 2.4 kbps).
Augmented Reality (AR) Satellite Acquisition Compass — Core engineering and protocols for Augmented Reality (AR) Satellite Acquisition Compass.
Zero-Wait SOS Emergency Preemption & Medical Telemetry — Core engineering and protocols for Zero-Wait SOS Emergency Preemption & Medical Telemetry.

Technical Articles

Related Cluster Architecture Specifications

NonTerrestrialNetwork — 3GPP 5G/6G NTN Satellite Architecture, Direct-to-Cell & Non-Terrestrial Infrastructure
NonTerrestrialNetworks — Multi-Orbit Heterogeneous Constellation Interworking (LEO / MEO / GEO / HAPS)
AirspaceSync — Doppler Compensation, Relativistic Timing & Airspace-Space Synchronization
FSOComm — Free Space Optics, High-Bandwidth Space Laser Communications & Atmospheric Mitigation