Today, a growing number of network operators are looking to
transition from traditional TDM (T1/E1) to Ethernet IP-based backhaul in
support of 4G/LTE radio networks. As backhaul transitions to Ethernet,
the physical layer synchronization chain is broken when TDM is removed
from the network, resulting in poor network quality. To accommodate
IP-based service performance in 4G/LTE networks, LTE necessitates even
stricter timing that includes frequency and phase requirements to
guarantee service quality. This makes timing and sync solutions even
more critical in these kinds of network build outs.
Compared to leased lines, microwave backhaul is a proven and flexible
solution to accurately deliver synchronization throughout the network
and can be quickly deployed to meet aggressive build-out schedules. With
the rising network capacity needs of LTE, microwave backhaul is rapidly
becoming a critical component in delivering the required bandwidth to
serve cell sites, especially in areas that are geographically
challenging to serve or when fiber is simply not an option. Current 3G
cell sites are provisioned for 10-20 Mbps but LTE tests show that per
site backhaul requirements may require upwards of 160 Mbps. Microwave
backhauls flexibility and scalability can support these kinds of service
provider requirements to rapidly scale their networks to support
bandwidth intensive IP-based applications.
Symmetricom is committed to partnering with trusted end-to-end
technology providers that deploy and maintain networks on behalf of
network operators. The SyncWorld Ecosystem Program represents all
elements of the mobile communications value chain from embedded to
systems network elements, such as microwave backhaul. Industry leading
analyst group, Heavy Reading, estimates that half of the world's cell
sites today are connected to the network via microwave backhaul, making
it a vital new addition to the SyncWorld Ecosystem Program.
"Ethernet-based microwave backhaul deployments are growing rapidly as
networks look to scale economically to meet increasing bandwidth
demands," said Patrick Donegan, senior analyst, Heavy Reading. "With
stricter timing and synchronization network requirements emerging to
support 3G and 4G, programs such as SyncWorld become even more important
to ensure interoperability among equipment vendors to meet aggressive
roll-out schedules and ensure precise timing and synchronization through
In collaboration with Aviat Networks, Symmetricom has successfully
conducted tests over 10 hops while guaranteeing synchronization in a
microwave network. Microwave backhaul is usually deployed in multiple
hops from the aggregation point to a cell site. Maintaining the signal
across a large number of hops is truly an achievement. SyncWorld aims to
further this kind of innovation with the new microwave backhaul segment.
For more information on the results of the IEEE 1588v2 synchronization
over packet microwave networks deployment, download the application note
developed with Aviat Networks.
"The microwave backhaul category launch underscores the criticality of
interoperability among vendors in all segments of a communications
network," said Manish Gupta, vice president of marketing at Symmetricom.
"The enormous response we've received with SyncWorld signals the
importance for us and our partners to support LTE with interoperable
timing and sync solutions."
For more information about the SyncWorld Ecosystem Program, please visit
About Symmetricom, Inc.
Symmetricom (NASDAQ: SYMM), a world leader in precise time solutions,
sets the world's standard for time. The company generates, distributes
and applies precise time for the communications, aerospace/defense, IT
infrastructure and metrology industries. Symmetricom's customers, from
communications service providers and network equipment manufacturers to
governments and their suppliers worldwide, are able to build more
reliable networks and systems by using the company's advanced timing
technologies, atomic clocks, services and solutions. All products
support today's precise timing standards, including GPS-based timing,
IEEE 1588 (PTP), Network Time Protocol (NTP), Synchronous Ethernet and
DOCSIS(R) timing. Symmetricom is based in San Jose, Calif., with offices
worldwide. For more information, visit: http://www.symmetricom.com.
SyncWorld(TM) Ecosystem Program Microwave Backhaul Segment Quote Sheet:
"The question is no longer whether microwave backhaul networks will
migrate from TDM to packet, but when and how. And in the transition to
packet microwave we need to fulfill strict requirements for time and
synchronization to pave the way to LTE and 4G mobile services," said
Fran�ois Allain, director of Alcatel-Lucent's Wireless Transmission
product unit. "That's why Alcatel-Lucent sees the value of Symmetricom's
SyncWorld interoperability program dedicated to microwave, to prove to
the industry that microwave networks are ready to support this critical
"As the wireless experts in advanced IP network migration, Aviat
Networks is proud to have charted the path for packet network
synchronization over microwave in partnership with Symmetricom, to
deliver fully tested interoperable solutions for 4G/LTE backhaul," says
Shaun McFall, senior vice president and chief marketing officer of Aviat
"Partnering with Symmetricom, allows us to bring more value to our
global customer base, by validating Ceragon's advanced synchronization
features over Symmetricom's market leading synchronization products,"
said Mr. Eirik Nesse, VP Product Strategy at Ceragon Networks.
"The SyncWorld(TM) Ecosystem Program demonstrates the interoperability
of synchronization solutions and boosts customers' confidence in
deploying all IP backhaul networks," said Alan Solheim, Vice President
Corporate Development with DragonWave. "By enabling our customers to
reliably and easily integrate their legacy traffic into a single
packet-based backhaul network we are enhancing their ability to cope
with the evolving traffic demands."
Nokia Siemens Networks:
"By providing fully tested interoperability between Nokia Siemens
Networks FlexiPacket Microwave platform and Symmetricom's TimeProvider(R)
5000, we can deploy true and reliable packet-based microwave backhaul
networks sustaining mobile operators' profitability," said Maurizio
Pecchioli, Head of Nokia Siemens Networks Microwave Transport Product