Case Study Multitechnology Performance Engineering The Background With the advent of LTE capable smartphones the roll out of LTE is gathering pace around the world. The capabilities of LTE networks are set to revolutionize the user experience of applications such as mobile gaming and video-intensive applications. However, a customer will not be served purely by an LTE network, rather they will be served by the LTE layer of a heterogeneous network consisting of multiple technologies. Their experience will be highly influenced by the service they are delivered when they inevitably drop back to the UMTS/ HSDPA layer and, in many cases, the GPRS/EDGE layer, as shown in Figure 1. The transitions between the technology layers, likely will be fundamental to the overall experience, and th

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