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The rapid development of LTE and ultra-broadband technologies has brought about bursts of Internet entertainment and commercial demand for IPTV video, OTT video, mobile games, TV games, and e-commerce, and has placed higher demands on CDN networks. CDN is a content distribution network. By adding a new layer of network architecture to the existing Internet, the content of the website is published to the “edge†of the network closest to the user, allowing users to avoid the possible impact on data transmission when they access the Internet. The bottlenecks and links of speed and stability make content transmission faster and more stable. The role of the CDN has become more and more important for operators' full-service development of the entire network.
Huawei uCDN Solution
In 2000, China began to introduce CDN technology. At this time, Huawei has already started research and development of CDN related products and programs, and has continued to invest heavily in it. Huawei's Integrated CDN Solution (uCDN) Combines Content Delivery Network, Transparent Internet Cache, and Wireless Network Cache to Address the Explosive Growth of Network Traffic
This year, OTT video, mobile applications, and cloud computing have brought tremendous pressure on operators' networks. The deployment of a large number of new routers does not solve the problem well, because the growth of network traffic is faster than the price reduction of equipment. This enabled operators to start reconsidering the migration of their IP edge network architecture and begin deploying a converged network of fixed and mobile networks (mobile convergence) to improve operational efficiency and deploy popular content to be closer to users by deploying CDNs. To shorten the response time and greatly reduce the backbone traffic load.
In order to adapt to the full-service operator's architecture migration in the IP edge network, and the deployment of converged networks in fixed and mobile networks, Huawei uCDN deploys CDN and caching service nodes close to both fixed and mobile networks to open up fixed-line and wireless networks. Barrier, build an In-Pipe converged CDN network that is integrated with the network pipeline, effectively respond to the huge traffic impact brought by mobile applications such as OTT video, mobile applications, and cloud computing to the operator network, balance loads, and accelerate the distribution of multimedia content. Huawei uCDN supports multiple networks such as FBB, MBB, DVB-C, and enterprise networks.
The booming mobile application faces challenges in terms of user experience: the mobile network environment is complex and the speed is unstable; the traffic is too expensive and leads to limited user use; the terminals are diversified and development is difficult to adapt; network hijacking causes application unavailability to drain users, etc. .
Huawei uCDN deploys embedded service nodes such as RAN Cache and Brass Cache, and embeds edge service nodes in mobile edge networks such as eNodeBs to make CDN an infrastructure at the network application layer, sensing mobile network status, optimizing routing paths for mobile applications, and implementing transmission. Acceleration in the process.
For mobile networks, Huawei uCDN has launched a large number of optimized designs, such as web page adaptation, video optimization, and priority content and application traffic under the data category classification security environment, so as to avoid possible bad experiences caused by wireless congestion and improve the user experience. Improve network efficiency.
Focus on multimedia service delivery acceleration
Multimedia has become the main feature of today's broadband network support services. Huawei's uCDN solution focuses on solving key and difficult issues such as multimedia video acceleration optimization and content/service support diversification. For example, TCP unilateral acceleration, frame prefetching, fast channel switching, traffic shaping, and other acceleration optimization technologies promote multimedia acceleration with video as the core to ensure the quality of video for users to watch.
It is worth mentioning that Huawei uCDN uses asymmetric TCP acceleration technology. Asymmetric TCP Acceleration Technology is an innovative WAN optimization technology that enables asymmetric TCP data transmission acceleration. By using the effective bandwidth learning and adaptive algorithm of the network path, the effective bandwidth of each TCP connection on the network path can be accurately determined, the behavior mode of the peer TCP can be automatically grasped, and the video matching the existing bandwidth of the network path can be adjusted by the peer end. The code stream transmission speed can effectively accelerate the traffic in the downlink direction.
From a morphological point of view, Huawei uCDN can support various commercial scenarios such as IPTV CDN, OTT CDN, eMBMS, Mobile CDN, FBB Cache, MBB Cache, B2B CDN, and WAN acceleration, and services can support 4K/H.265, games, and education. And e-commerce, etc., and support the further development of future digital operators.
In addition, Huawei uCDN is based on a cloud-based extensibility architecture. The software can be flexibly deployed on multiple hardware platforms, including dedicated hardware, general-purpose services, and built-in processing boards for routers. Future Huawei CDN software can be deployed on a variety of cloud platforms, supporting Network Function Virtualization (NFV) and Software-Defined Networking (SDN) to comply with the continuous evolution of carrier networks.
Realize the whole network visual intelligence dispatch and optimization
In order to cope with the increasingly complex network environment and support the ever-increasing number of personalized broadband services, CDN must implement visualized intelligent scheduling and optimization for the entire network. To this end, Huawei integrates functions such as full-network-aware visualization, intelligent routing, intelligent optimization, operations analysis based on big data, fine operations, and multi-point content injection into the uCDN solution.
The whole-network-aware and visible system can perceive the service content, user information, and network status carried by the entire network, and implement closed-loop network optimization to improve network efficiency.
Smart routing is when the user accesses content that can be accelerated by the CDN. The CDN cooperates with each other through multiple intelligent routing strategies to ensure the best end-user experience and maximum bandwidth savings under the current network conditions. Routing policies include DNS routing, HTTP redirect routing, location-based routing, content-based routing, load-based routing, and DNS dynamic discovery.
In the analysis of big data-based operations, Huawei's CDN operation analysis system uses mature big data analysis technology to analyze the massive data generated during the operation of the CDN, providing carriers with network traffic distribution, user behavior statistics, and hot content statistics. Such as rich analysis results, users can also customize the analysis results. The operational analysis results can not only be used to guide network optimization, but also a powerful tool for business operations.
For fine operations, uCDN can set different priorities for multiple CPs/SPs introduced, and cooperate with systems such as network intelligent speed-up platforms to provide different service quality guarantees for different services and different users, through differentiation. Services enable flexible business models and refined network traffic operations. According to the CDN business changes of operators, through the CDN centralized management platform, CDN resources can be flexibly deployed between high-value operators' own services and subscription services and low-value non-subscription services, achieving the lowest TCO.
Multi-point content injection automatically synchronizes content directly in the province's content bases, reducing inter-provincial return traffic.
In addition, Huawei uCDN solutions can also achieve unified operation, maintenance, openness, and monetization.
At present, Huawei uCDN has more than 100 successful cases in the world. The network supported by domestic users exceeds 10 million users, and the total distribution capacity exceeds 10 Tbps. Its stability, security, ease of operation and maintenance, and service richness have been achieved. Full inspection of the market.
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