Mobile & Wireless

Symmetricom’s keeping time

Strengthens product portfolio to address wireless backhaul

by Sean Buckley

While there are clear advantages in moving to Ethernet for wireless backhaul, the one concern that’s been on everyone’s mind is dealing with network synchronization. Unlike the traditional TDM world, Ethernet was not initially built with network synchronization capabilities. As wireless operators start to deploy IP/Ethernet base stations and turn towards using IP/Ethernet for wireless backhaul, the ITU has emerged with its Sync-E (Synchronous Ethernet) standard to add predictability into Ethernet. Listen in to this special edition of Telecommunications' Audiocast series where Editor in Chief Sean Buckley talks with Jeremy Bennington, Director of Business Development for Symmetricom about the growing need for a tight clock for wireless backhaul networks.

Click here for the Audiocast of this interview

In this Audiocast, Bennington addresses the following questions:

• When it comes to wireless backhaul, the two dominant forms have been either E1/T1 and TDM-based microwave solutions, which is due to the fact that most base stations today still have predominantly TDM-based interfaces, but now we’re hearing more about carriers adopting or considering using IP/Ethernet for wireless backhaul. What’s driving the migration from TDM to IP/Ethernet for wireless backhaul?

• From your perspective, what are the measurable benefits to the deployment of Ethernet solutions for backhaul applications?

• While it’s clear there are measurable benefits with going to Ethernet- based wireless backhaul solutions, one issue that has been a concern in the migration from TDM that Ethernet has lacked the same predictable synch elements. Talk about how the emerging Sync-E standards are helping to resolve those issues for wireless operators?

• To advance the case for enhanced network synchronization in wireless backhaul networks, Symmetricom is working with Nokia Siemens Networks to develop what the two companies are calling 'a standard Timing over Packet solution.' What are the elements of that solution and how can it address current and next-gen requirements?

Click here to listen to the Audiocast

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