By Nigel Seel
Companies and repair prone have united round the notion of the Next-Generation community (NGN). even though leveraging a huge basket of net applied sciences, the NGN isn't really being deliberate because the next-generation web. In its goal and structure, it's extra correctly defined as Broadband-ISDN unlock 2.0. The NGN is difficult to appreciate since it weaves jointly such a lot of precise matters: expertise, new different types of product, a brand new type of provider association in addition to adjustments within the company version, price chain and the form of a converged destiny itself. This ebook offers a unified research of the advanced transformation procedure that's happening within the fastened telecoms, cellular telecoms, and broadcast industries and descriptions ideas for achievement.
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A special handset is required, which in addition to its normal cellular mode of operation can also support WiFi radio access. When the dual-mode handset is in reach of a WiFi network, and is authenticated to log on to it, the handset accesses a UMA Network Controller (UNC) device via WiFi across the IP network. This UNC could be in the broadband supplier’s network, or in the mobile operator’s network. indd 31 Core Core Mobile Mobile Network Network Unlicensed Mobile Access Network IP IPAccess Access Network Network Unlicenced wireless network (eg WiFi, Bluetooth) UMA Network Controller (UNC) UNC makes UMA network like GSM RAN UMA architecture.
My own position on this is skeptical for the following reasons. Recall that the Internet is a network of networks. The Internet backbone is composed of networks from tier-1 Internet companies such as Verizon, AT&T, Sprint, British Telecom (BT), Deutsche Telekom, and so on. Smaller tier-2 carriers connect to the tier-1 companies, and in their turn oﬀer connectivity to even smaller tier-3 ISPs. All of these networks are currently running IPv4 for Internet traﬃc. Since a collective cutover to IPv6 is not on the cards, any protocol migration to IPv6 is fraught with practical diﬃculties.
The encouraging deployment worldwide of metropolitan WiFi/WiMAX networks shows that this is beginning to occur. The mobile operators are understandably not WiFi enthusiasts: it’s a technology that doesn’t ﬁt at all into their 2G and 3G architectures or business models. However, as WiFi exists and has been paid for, it can—with eﬀort perhaps—be exploited. 6). A special handset is required, which in addition to its normal cellular mode of operation can also support WiFi radio access. When the dual-mode handset is in reach of a WiFi network, and is authenticated to log on to it, the handset accesses a UMA Network Controller (UNC) device via WiFi across the IP network.