Securing the transition to LTE By Jeff Sharpe
Jeff describes why an AdvancedTCA-based LTE security gateway has characteristics well suited to both deflecting security threats and enhancing wireless offloading performance.
[Figure 1 | The increase in sensitive information traveling across mobile networks is helping drive demand for enhanced LTE security.]
Mobile usage has exploded, putting pressure on mobile network operators to meet consumers’ insatiable data demands (Figure 1). Data traffic is expected to double every year through 2014[1],
by
which time it is projected that 17 percent of all mobile data will be transmitted over the Internet. To handle this astronomical increase in data usage, major mobile operators worldwide are currently tran- sitioning their networks to Long Term Evolution (LTE). LTE is an all-IP net- work that increases broadband capacity, supporting up to ten times higher data
rates than traditional networks while enabling an abundance of new mobile applications. LTE delivers four times more downlink bandwidth and eight times more uplink bandwidth than tradi- tional networks. Higher cell performance and Quality of Service (QoS) with lower latency characterize LTE, which also sup- ports more users at a lower cost per byte than High Speed Packet Access (HSPA). LTE networks can take several years to rollout, so mobile operators are planning and deploying LTE today to prepare for tomorrow’s demands.
12 | April 2011 Embedded Computing Design
While LTE offers a number of network benefits, it also introduces new security threats and challenges to network opera- tors. Security threats resulting from untrusted network endpoints, shared facilities, and disgruntled employees are magnified in an all-IP environment.
Traditional mobile networks used network backhaul for connecting cell sites to the core network, employing dedicated T1 and unshared facilities between macro cell sites and the core network base station. LTE uses Ethernet
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