5月19号下午，Andy F. Molisch教授在新主楼第三会议室为我们做了题目为“Femto-caching and device-to-device collaboration for wireless video networks”的报告。Andy F. Molisch教授来自美国南加州大学，为Fellow of IEEE。

报告的摘要如下：
The ongoing explosive increase in the demand for video content in wireless networks requires new architectures to increase capacity without excessive costs. The talk will present a new architecture for solving this problem, exploiting a special feature of video viewing, namely asynchronous reuse. The approach is based on (i) distributed caching of the content in femto-base stations with small or non-existing backhaul capacity but with considerable storage space, called helper nodes, and/or (ii) usage of the wireless terminals themselves as caching helpers, which can distribute video through device-to-device communications. The talk will discuss the fundamental principles, scaling laws for the throughput, as well as practical implementation considerations. The new architecture can improve video throughput by one to two orders-of-magnitude.