Huawei Unveils the World's First 1588v2-Compliant xDSL Time Synchronization Prototype

19 January 2010

[Shenzhen, China, 19 January 2010] Huawei, a leader in providing next generation telecommunications network solutions for operators around the world, announced that it has successfully developed the world's first 1588v2-compliant DSL prototype with nanosecond-level time synchronization accuracy, presenting a more cost-effective mobile backhaul choice for mobile operators worldwide to build out their 3G/4G networks.

Combining new DSL technologies with microcell and LTE base stations can extend the mobile network by using existing copper wire resources, thus protecting investments in the "last-mile" network and providing a cost-effective cellular backhaul. Leveraging Huawei' s proprietary high-accuracy time synchronization algorithm and complying with the IEEE 1588v2 standard, Huawei's innovative time synchronization solution makes it possible to implement high-accuracy, nanosecond-level time synchronization over DSL lines. This offers an advantage over legacy DSL technologies, as the legacy DSL technologies can implement data backhaul of base stations but do not offer high-accuracy time synchronization, thus falling short of cellular backhaul.

Yang Zhirong, president of Huawei' s Access Network Product Line stated "DSL remains the world's most widely used broadband access technology. Technical breakthroughs such as this one will enable operators optimally utilize their abundant copper wire resources, as well as achieve quick provisioning of their 3G/4G services. The leading xDSL time synchronization prototype reflects Huawei' s commitment to deliver a powerful and unique value proposition to its customer."

1588v2, also known as Precision Time Protocol (PTP), is a packet-based time synchronization technology standardized by the IEEE. This technology effectively addresses the issues facing GPS (Global Positioning System) clock synchronization, such as high investments and difficult installation, and is recognized as a crucial technology for network evolution from 2G to 3G/4G. The 1588v2 time synchronization algorithm is originally designed on the basis of symmetric models, and asymmetric transmission technologies such as ADSL cannot effectively support the 1588v2 protocol. This time Huawei has achieved high-accuracy DSL time synchronization, which is a breakthrough in this regard.

As an industry-leading mobile backhaul vendor, Huawei has unveiled the IPTime mobile backhaul solution, the only one in the industry with 1588v2 high-accuracy time synchronization that can be implemented over any media including optical fiber, microwave, and copper wire. Tests have proven that the time synchronization accuracy of Huawei' s prototype has achieved GPS (Global Positioning System) level and is capable of mobile backhaul transmission in the 3G/4G era. This solution has already been servicing leading operators such as China Mobile, Vodafone, and Telefónica.

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