How Huawei SparkRTC Delivers Global Low‑Latency Audio/Video: Network Architecture Secrets

How Low‑Latency Network Enables Global Service

In Huawei Cloud’s product division, three services are needed to achieve media network goals:

E2E real‑time interaction: suitable for cloud meetings, entertainment, social, education and other applications.

Cloud‑edge interaction acceleration: suitable for cloud phones, cloud desktops, cloud rendering and similar services.

Edge interaction acceleration: for cloud gaming, cloud XR and other edge‑centric, ultra‑low‑latency applications.

How Huawei SparkRTC’s Backbone Network Is Built

The SparkRTC backbone network has been rebuilt by sharing the infrastructure of Huawei’s public and consumer clouds, enabling global node coverage and regional dedicated lines. To cope with the unreliable Internet, the architecture is layered to serve real‑time services with different SLA requirements.

The design introduces an Overlay network built on top of the physical Underlay. The Overlay perceives network status and, via a central controller combined with QoS data, dynamically selects the optimal transmission path, providing efficiency and energy savings.

Nine Secrets Revealed: Detailed Low‑Latency Techniques

Transmission technology, terminal‑cloud‑edge collaboration providing an end‑to‑end low‑latency solution.

Innovative RTC terminal‑network co‑operation, reducing stutter by 22% in congested wireless scenarios.

Multi‑path access, sharing Wi‑Fi and 4G/5G communication capabilities for faster edge node access.

Weak‑network mitigation algorithm, adaptive to complex networks to avoid server overload and ensure low‑latency experience.

AI‑driven prediction and intelligent routing, overcoming cross‑domain communication challenges.

Extreme encoding, lowering media bitrate while preserving user perception, thus reducing transmission time under equal network conditions.

Source‑channel joint coding, using reinforcement learning to predict bandwidth for frame‑level detection and control.

Multi‑party packet forwarding with segment loss resistance, supporting both two‑party and multi‑party transmission with a single architecture.

Segmented transmission network full‑link QoS collaborative coding.

For a complete walkthrough, developers are encouraged to watch the replay of the live session.

Reminder

Huawei Cloud Real‑Time Audio/Video Application Development competition registration is nearing its deadline; teams that have not yet signed up should act quickly.