How Huawei cloud implements a global low delay network architecture for real-time audio and video [Part 1]

Abstract ： This article mainly introduces Huawei cloud SparkRTC How can the global low delay network architecture achieve full real-time , Low delay , Play in real time , Delay less than 200ms. The end-to-end delay of bidirectional interaction is less than 200ms, The control command is less than 30ms The implementation of the , Mainly from three aspects , Finally, focus on the nine unique skills of low delay technology , Uncover Huawei cloud SparkRTC Global low latency network architecture .

This article brings you to Xie Hua Wei Yun's SparkRTC Global low latency network architecture

This paper is divided into the following three parts ,

• Media network business objectives

• SparkRTC Global network architecture

• Start with the analysis of low delay technology

Next, we will learn from these three aspects .

1. Low delay network technology provides Global level E2E Interaction and cloud edge acceleration ,Edge Edge real-time acceleration capability

Low delay network technology mainly provides three services :

1.1Global service ：E2E Real time interaction

• Provide global 170+ The country is clear RTC service

• Applicable to cloud conference 、  recreational 、 social contact 、 Education and other applications

• Average global 200ms End to end delay , At home 120ms End to end delay

1.2Global service : Cloud side interaction accelerates

• Provide edges to Region Real time uplink and downlink acceleration

• Applicable to cloud mobile phones , Cloud desktop 、 Cloud rendering and other applications

• Average global 130ms Transmission delay , At home 50ms Transmission delay

1.3Edge service : Edge interaction accelerates

• Provide nearby access services and LastMile Weak network antagonism

• Business scenario : Cloud games 、 cloud XR Based on edge technology stack , Application of ultra-low delay demand

• Local flow closed loop ,30ms Transmission delay

1.4 summary

All in all ,SparkRTC The ultimate goal of the global media network , Based on Huawei cloud Region/WiseWan node /IEC node /CDN Central node deployment , Solve cross regional problems 、 transnational 、 High quality across operators 、 The problem of low-cost Interconnection . As shown in the figure below ：

2.SparkRTC Global network architecture

Huawei SparkRTC Reconstruct the backbone network based on the public Internet

• Self built backbone network : Share Huawei's public cloud and consumer cloud business infrastructure , Global coverage of nodes 、 Regional dedicated line interworking ;

• share CDN: Realize global user local domain coverage ;

• Operator signing : Realize the global capital /TOP1 The economic circle is connected to the backbone network in one hop ;

Huawei SparkRTC How to build the backbone network of ？

Maybe a lot of people don't know , Huawei SparkRTC The backbone network of is reconstructed . It is an infrastructure that shares Huawei's public cloud and consumer cloud services , To achieve global coverage of nodes 、 The goal of regional dedicated line interworking . On this basis , For the unreliable Internet , Huawei also layered the network architecture , To face different SLA Demand real-time business .

The layered architecture divides it into clouds , edge , End , Three levels , Make them in charge of their own field

About OverLay The Internet . It is used. Overlay Technology is built on the basis of physical network , It mainly provides the optimal path for data forwarding . Then why does Huawei make efforts to build a OverLay What about the Internet ？

The main reason is that Underlay In mode , As long as the data is accessible , Then you can go all the way through this link , But in fact, this may not be the optimal solution . Therefore, it is necessary to perceive the network state OverLay The Internet , Through the central controller , combination QoS Dynamic selection of optimal transmission path for data . That's why Huawei SparkRTC One of the main reasons why the global media network is efficient and energy-saving .

utilize RTN Technology is built on the basis of physical network OverLay The Internet , Provide the best path for data forwarding

Scheme description :

• Flexible deployment of acceleration nodes based on edge container technology ;

• be based on Underlay structure Overlay Plane and intelligent route selection ;

• The terminal passes through SDK/AIP And other rich ways to access the acceleration network ;

I understand SparkRTC The network architecture of , Huawei's low delay technology is analyzed in detail , Tomorrow, we will share the low latency technology

Nine unique moves .