IPTV Content Delivery Network Center Based on the AdvancedTCA® Architecture

By Stephen Huang, ADLINK Technology Inc.

Functions of CDN
Content Delivery Network (CDN) is a new network architecture that works as a transition layer over traditional IP networks. It is particularly optimized for broadband media and represents a network service mode based on quality and order. Specifically, CDN is used in systems with four subsystems, distributed storage, load balance, redirection of network requests and content management.

Content and traffic management are the key features in a CDN. It ensures efficiency in providing customized service. Content service is based off the cache server, or the surrogate, which is located on the edge of the network. The surrogate is the mirror of the ICP media source server, usually located in the ICP data center. Such a structure minimizes the response delay to provide the best internet connection.

CDN more emphasizes the importance of the network as compared to other modes of content delivery. CDN introduces Content Management and Overall Load Balance which makes it unique from traditional content delivery methods. Traditionally, content is released by ICP application servers using network functions only as a transparent data transmit channel. This transparency limits network quality in the data package layer and cannot modify service quality for different customers.

IPTV CDN based on the aTCA architecture

  • CDS and MS are built on the aTCA Computing SBC.
  • Carrier grade CDN center is based on the aTCA Platform.
Evaluation
Computing Performance
CDS and MS run on an AdvancedTCA single board computer on two or four parallel Intel® Xeon® processors. The system implements high-density computing and one such system supports up to 16 blades (including Fabric Switch blades). Its computer power is comparable to the widely-used single server.

Network Performance
  • Network Chipset is configured with Gigabit Ethernet.
  • Gigabit Ethernet port is com
The internal communication structure on an AdvancedTCA Base and Fabric channel has a maximum internal date switch rate of 2.4T. It can implement up to 2.4T data switch using standard Base Channel and Fabric Channel in BP. The Fabric Channel supports Ethernet, FC, Infiniband, Star Fabric and PCI Express. Similar to an internal IP switch, the standard FC Interface and Internal FC Switch can also be implemented by a FC switch blade and Fabric Channel.

External Interface
  • Standard AdvancedTCA I/O interface: PMC, PTMC, AMC
  • Easy to implement the E1,ATM,FC,Ethernet Access
System Feature
  • Intrinsic Carrier Grade Architecture Design
  • High Reliability, High Serviceability, High Scalability
  • Modular Management Interface is easy to maintain and update locally and remotely
Economic Feature
  • Global Main Stream Industrial Standard
  • Rich Ecosystem, High Price-Effectiveness ratio
  • Modular Design, shortening the time-to-market
The Outlook
The promotion of AdvancedTCA by PICMG encourages companies to build their open core telecom and network equipment based on the AdvancedTCA architecture. AdvancedTCA-based equipment and applications also attract interest from carrier manufacturers. With its open modular open architecture and application in telecom design, AdvancedTCA will continue to play an important role in the commercialization process of telecom and network hardware platforms.

Contact Information

ADLINK Technology Inc.
8900 Research Drive
Irvine, CA 92618
USA
866.4.ADLINK Telephone
949.727.2099 Fax
info@adlinktech.com
www.adlinktech.com