ATCA Support of Wireless Flow-Based Routing

The evolution of wireless access is a much-discussed subject. The impact and schedule of Long Term Evolution (LTE), the adoption of femtocells for in-building access, and how WiMAX, Unlicensed Mobile Access (UMA), and LTE will eventually play out are all dominating the agendas of industry watchers. Equally clear is that data-driven services are becoming much more popular with many operators providing an “always connected” service at a reasonable price, at least within the home region. What is discussed less often, however, is the infrastructure impact of these multiple access technologies and services plans and how the core network will need to evolve to remain efficient and cost effective.

The traditional wireless core network is a tightly coupled group of entities with full end-to-end security managed by a single network operator. Security and access control are inherent, spanning from the end-user subscriber identity module (SIM) card all the way through to the gateway GPRS support node (GGSN). Voice services are the predominant traffic and these are effectively managed for quality of service (QoS) and billing by the mobile switching center (MSC), home / visitor location register (HLR/VLR), and related billing servers and SS7 signaling systems.

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