As users become increasingly intolerant of poor network quality, Simon Williams, Senior VP Product Marketing and Strategy at Redback Networks tells Priscilla Awde that, in order to meet the huge demand for speed and efficiency, the whole industry is heading in the same direction - creating an all IP Ethernet core using MPLS to prioritise packets regardless of content
Speed, capacity, bandwidth, multimedia applications and reliable any time, anywhere availability from any device - tall orders all, but these are the major issues facing every operator whether fixed or mobile. Meeting these needs is imperative given the global telecoms environment in which providing consistently high quality service levels to all subscribers is a competitive differentiator. There is added pressure to create innovative multimedia services and deliver them to the right people, at the right time, to the right device but to do so efficiently and cost effectively.
Operators are moving into a world in which they must differentiate themselves by the speed and quality of their reactions to rapid and global changes. Networks must become faster, cheaper to run and more efficient, to serve customers increasingly intolerant of poor quality or delays. It is a world in which demand for fixed and mobile bandwidth hungry IPTV, VoD and multimedia data services is growing at exponential rates leaving operators staring at a real capacity crunch.
To help operators transform their entire networks and react faster to demand for capacity and greater flexibility, Ericsson has created a Full Service Broadband initiative which marries its considerable mobile capabilities with similar expertise in fixed broadband technologies. With the launch of its Carrier Ethernet portfolio, Ericsson is leveraging the strength of the Redback acquisition to develop packet backbone network solutions that deliver converged applications using standards based IP MPLS (Multi Protocol Label Switching), and Carrier Ethernet technologies.
Committed to creating a single end-to-end solution from network to consumer, Ericsson bought Redback Networks in 2007, thereby establishing the foundation of Ericsson IP technology but most importantly acquiring its own router and IP platform on which to build up its next generation converged solution.
In the early days of broadband deployment, subscriber information and support was centralised, the amount of bandwidth used by any individual was very low and most were happy with best effort delivery. All that changed with growth in bandwidth hungry data and video applications, internet browsing and consumer demand for multimedia access from any device. The emphasis is now on providing better service to customers and faster, more reliable, more efficient delivery. For better control, bandwidth and subscriber management plus content are moving closer to customers at the network edge.
However, capacity demand is such that legacy systems are pushed to the limit both in handling current applications, let alone future services, and guaranteeing quality of service. Existing legacy systems are inefficient, expensive to run and maintain compared to the next generation technologies that transmit all traffic over one intelligent IP network. Neither do they support the business agility or subscriber management systems that allow operators to react fast to changing markets and user expectations.
Despite tight budgets, operators must invest to deliver and ultimately to save on opex. They must reduce networking costs and simplify existing architectures and operations to make adding capacity where it is needed faster and more cost effective.
The questions are: which are the best technologies, architectures and platforms and, given the current economic climate, how can service providers transform their operations cost effectively. The answers lie in creating a single, end-to-end intelligent IP network capable of efficiently delivering all traffic regardless of content and access devices. In the new IP world, distinctions between fixed and mobile networks, voice, video and data traffic and applications are collapsing. Infonetics estimates the market for consolidating fixed and mobile networks will be worth over $14 billion by 2011 and Ericsson, with Redback's expertise, is uniquely positioned to exploit this market opportunity.
Most operators are currently transforming their operations and as part of the solution, are considering standards based Carrier Ethernet as the broadband agnostic technology platform. Ethernet has expanded beyond early deployments in enterprise and Metro networks: carrier Ethernet allows operators to guarantee end-to-end service quality across their entire network infrastructure, enforce service level agreements, manage traffic flows and, importantly, scale networks.
With roots in the IT world where it was commonly deployed in LANs, Ethernet is fast becoming the de facto standard for transport in fixed and mobile telecoms networks. Optimised for core and access networks, Carrier Ethernet supports very high speeds and is a considerably more cost effective method of connecting nodes than leased lines. Carrier Ethernet has reached the point of maturity where operators can quickly scale networks to demand; manage traffic and subscribers and enforce quality of service and reliability.
"For the first time in the telecoms sector we now have a single unifying technology, in the form of IP, capable of transmitting all content to any device over any network," explains Simon Williams, Senior VP Product Marketing and Strategy at Redback Networks, an Ericsson company. "The whole industry is heading in the same direction: creating an all IP Ethernet core using MPLS to prioritise packets regardless of content.
"In the future, all operators will want to migrate their customers to fixed/mobile convergent and full service broadband networks delivering any service to any device anytime, but there are a number of regulatory and standards issues which must be resolved. Although standards are coming together, there are still slightly different interpretations of what constitutes carrier Ethernet and discussions about specific details of how certain components will be implemented," explains Williams.
Despite debates about different deployment methods, Carrier Ethernet, MPLS ready solutions are being integrated into current networks and Redback has developed one future proof box capable of working with any existing platform.
Experts in creating distributed intelligence and subscriber management systems for fixed operators and now for mobile carriers, Redback's solutions are both backward and forward compatible and can support any existing platform, including ATM, Sonet, SDH or frame relay. Redback is applying its experience in broadband fixed architectures to solving the capacity, speed and delivery problems faced by mobile operators. As the amount of bandwidth per user rises, the management of mobile subscribers and data is being distributed in similar ways as happened in the fixed sector.
Redback has developed SmartEdge routers and solutions to address packet core problems and operator's needs to deliver more bandwidth reliably. SmartEdge routers deliver data, voice or video traffic to any connected device via a single box connected to either fixed or mobile networks. Redback's solutions are designed to give operators a gradual migration path to a single converged network which is more efficient and cost effective to manage and run.
In SmartEdge networks with built-in distributed intelligence and subscriber management functionality, operators can deliver the particular quality of service, speed, bandwidth and applications appropriate to individual subscribers.
Working under the Ericsson umbrella and with access to considerable R&D budgets, Redback is expanding beyond multiservice edge equipment into creating metroE solutions, mobile backhaul and packet LAN applications. Its new SM 480 Metro Service Transport is a carrier class platform which can be deployed in fixed and mobile backhaul and transport networks; Metro Ethernet infrastructure and to aggregate access traffic. Supporting fixed/mobile convergence, the SM 480 is a cost effective means of replacing legacy transport networks and migrating to IP MPLS Carrier Ethernet platforms. The system can be used to build packet based metro and access aggregation networks using any combination of IP, Ethernet or MPLS technologies.
Needing to design and deliver innovative converged applications quickly to stay competitive, operators must build next generation networks. Despite the pressures on the bottom line, most operators see the long-term economic advantages of building a single network architecture. Moving to IP MPLS packet based transmission and carrier Ethernet creates a content and device agnostic platform over which traffic is delivered faster and over a future proof network. Operators realise the cost and efficiency benefits of running one network in which distinctions between fixed and mobile applications are eliminated.
Although true convergence of networks, applications and devices may be a few years away, service providers are deploying the necessary equipment and technologies. IP MPLS and carrier Ethernet support both operators' needs for speed, flexibility and agility and end user demand for quality of service, reliability and anywhere, anytime, any device access.
"Ultimately however, there should be less focus on technology and more on giving service providers and their customers the flexibility to do what they want," believes Williams. "All operators are different but all need to protect their investments as they move forward and implement the new technologies, platforms and networks. Transformation is not only about technology but is all about insurance and investment protection for operators ensuring that solutions address current and future needs."
Priscilla Awde is a freelance communications journalist