Green Femtocell Based on UWB Technologies

摘要: The rapid evolution of mobile communications through four generations communication, envisages the operation at 100Mb/s for users and 1Gb/s stationary applications in near future. tremendous increase data rates must be considered context decades cellular technologies progress since its first introduction by Nippon Telephone Telegraph Company (NTT) late 70's Rappaport (2002). On other hand, fixed wireless are already available to provide over 300 Mbps raw local area networks (LAN) protocols as 802.11n, 1Gbps Ultra Wideband (UWB) personal (PAN), see (ECMA-368), (ECMA-387). With femtocell concept Zhang (2010), new opportunities have been opened approaching 4G vision convergence (FMC). Femtocell Access Point (FAP), low power access points that connect terminal core network using wired broadband or technologies. FAP provides viable operators, meet indoor coverage challenges most demanding cost. We propose a novel femtocell, denoted "Green Femtocell", high level architecture support paradigm FMC, which with short-range realized. proposed approach paves way green framework x100 energy efficiency reduction human exposure radiation become feasible. Our relies on radio-over-fiber all-optical solutions can "green" offering reduced consumption alternative solutions, CELTIC Purple Book (2011). is based following technical business entities (Fig. 1):  introduce remote Home Node (HAN) relays range radio protocols, including UWB, WLAN, LTE-A, IEEE 802.16m signals hybrid wireless-fiber media from 1.8 GHz 10.6 GHz; strict limitation radiated power. Wireless environments 2-3 order magnitudes, while potentially target end-user rates, dual-mode cellular-UWB common applications. Indoor HAN should distances ranging 0.3m 30m over-the-air. For outdoor