Anritsu Network Master Series Platform Supports SyncE
Regular Ethernet is an asynchronous communications standard where the timing of data sent and data received are not matched. This simplifies the type of transmission equipment needed. Smartphones, however, require synchronized timing of data between base stations in order to permit uninterrupted transmission as the Smartphones move between base stations.
The ITU-T organization has established a new standard called SyncE that adds a function for synchronizing asynchronous Ethernet communications. In addition, IEEE also has a new standard known as IEEE 1588 v2 for matching times.
Anritsu’s Ethernet test solution supports standard Ethernet communications and is also the ideal platform for verifying, developing and troubleshooting the new SyncE (Synchronous Ethernet) and IEEE 1588 v2 functions used by base stations.
Today’s general trend in communication networks is migration of synchronous networks (SDH/SONET) to Ethernet-based, packet-switched networks (PSN). However, the asynchronous nature of Ethernet creates transmission challenges because many existing networks have a strong requirement for frequency synchronization across the entire network; the SDH/SONET and PDH technologies have a built-in, physical-layer ability to carry a timing reference. Synchronization can be applied to Ethernet-based packet networks using SyncE.
There are two Ethernet synchronization techniques: physical synchronization signal forwarding defined in ITU-T G.8261, G.8262 and G.8264 (in many cases, this is now called SyncE), and protocol-based synchronization defined in IEEE 1588 v2 Precision Time Protocol (PTP). ITU-T defines a subset of PTP in G.8265.1, IEEE 1588 v2 Profile for Telecommunication.