NetworksandDevicesforthe5GEra方案.PDFVIP

5G WIRELESS COMMUNICATION SYSTEMS : PROSPECTS AND CHALLENGES Networks and Devices for the 5G Era Boyd Bangerter, Shilpa Talwar, Reza Arefi, and Ken Stewart, Intel ABSTRACT keep pace with usage and future demands will require networks that are flatter and more dis- Mobile services based on 4G LTE services are tributed. Next-generation networks will also steadily expanding across global markets, provid- require advanced source coding (e.g., H.265 and ing subscribers with the type of responsive Inter- beyond), advanced radio access networks (RANs) net browsing experience that previously was only such as heterogeneous networks (HetNets), and possible on wired broadband connections. With advanced radio access technologies (RATs) such more than 200 commercial LTE networks in as new wireless wide area network (WWAN) and operation as of August 2013 [1], LTE subscrip- wireless local area network (WLAN) technolo- tions are expected to exceed 1.3 billion by the gies. At the same time, transport technologies at end of 2018 [2]. LTE’s rapid uptake, based on cell sites (fronthaul and backhaul) will have to be exponential growth in network data traffic, has significantly improved in terms of both speed and opened the industry’s eyes to an important reali- deployment flexibility. ty: the mobile industry must deliver an economi- The industry’s concept of mobile perfor-