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Lowers the Cost of Running 2G, 3G and 3.5G Voice and Data Traffic over Packet-Based Networks 3rd May 2007: "Cellular operators understand that their rollout of mobile broadband services based on HSDPA and HSUPA will inevitably generate an exponential growth in demand for cellular backhaul bandwidth," states Gaby Junowicz, Director of Business Development at RAD Data Communications. "For that reason, European mobile operators have concluded that RAD's backhaul optimisation strategy matches their agendas." Because HSDPA will deliver up to 14.4 Mbps peak service throughput per each mobile subscriber, analysts are predicting that cellular operators' spending on backhaul links will have to double by 2009. "The challenge is that mobile operators expect their average revenue per user (ARPU) will plunge simultaneously as they compete against fixed line operators for the same user base," Junowicz notes. Pressure to Reduce Opex in the BackhaulWhile the migration to IP-based backhaul is clearly underway, it will be a gradual process, because TDM mobile backhaul provisioning is a multi-billion dollar business that carriers won't give up readily. Carriers also need time to gain trust with new IP/Ethernet equipment. "For this reason, mobile operators have adopted a hybrid approach in which legacy voice and real-time traffic like video will be carried over existing leased lines or deterministic networks while HSDPA will be transported over affordable Ethernet-based connections," Junowicz argues. "The pressure to reduce Opex in the backhaul will eventually force mobile operators to migrate to packet-based transport networks, but only when industry standardisation and traffic engineering provide the necessary comfort level." IIR's Transport Networks for Mobile Operators ConferenceAt the Transport Networks for Mobile Operators conference, which will be held in Budapest, Hungary between 7th-11th May, RAD Data Communications, therefore, will be featuring its full suite of cellular backhaul products, which are designed to provide the "comfort level" that will lower the cost of running 2G, 3G and 3.5G voice and data traffic over packet-based networks. Cellular operators in Europe and elsewhere around the world are deploying these solutions because of their ability to efficiently separate HSDPA traffic to run over DSL circuits as well as their delivery of TDM-based (GSM) and ATM-based (UMTS REL. 99) services robustly with highly accurate clock distribution and recovery across an asynchronous Ethernet network by applying pseudowire emulation technology that adheres to stringent timing standards. Fixed Mobile ConvergenceCost-cutting aside, the biggest advantage to shifting to a packet network for cellular backhaul transport is that it is suitable for fixed-mobile convergence (FMC). "Broadband customers today want the same user experience whether they are in front of their IPTV at home or downloading to their mobile handset on the road," concludes Junowicz. "Since the underlying technology behind this is IP, mobile operators and service providers will be able to assure seamless transport by using the same packet-switched infrastructure for mobile and wireline business and residential services."
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