Next Generation Mobile Systems 3G and Beyond phần 6 ppt

... handsets and external resources (such as printers, vending machines, displays, and handsets), handsets and ubiquitous computing environments (such as offices, airports, and homes), and handsets and ... IPv6, and OBEX) • Remote and systems manageability (SNMP v2 Client, Device management client) • Standards support (such as UPnP, Bluetooth, XML and SOAP, and USB) • Extensi...

Ngày tải lên: 14/08/2014, 09:21

... for the Next Generation 1 1 Evolution of Mobile Networks and Services 3 1.1 TheEvolutionofMobileNetworks 4 1.2 TrendsinMobileServices 6 1.3 WhyNext -generation( XG)MobileSystems? 9 1.4 Next- generationImperatives ... others. 3G mobile networks are characterized by their ability to carry data at much higher rates than the 9 .6 kbps (kilobits per second) Next Generation Mo...

Ngày tải lên: 14/08/2014, 09:21

... of Mobile Network Technologies While the first-, second-, and third -generation cellular networks are based on circuit switch- ing and provide voice-centric services, the next- generation (XG) mobile ... review of the main 3G architectures, those developed or proposed by the industry for the 3rd Generation Partnership Project (3GPP), 3rd Generation Partnership Project-2 (3GPP...

Ngày tải lên: 14/08/2014, 09:21

... scheme for the systems of IMT-2000 and beyond. 3.2.3 Principles of DS-CDMA and IS-95 This section reviews the principle of DS-CDMA, on which the 3G systems and beyond are based, and discusses ... 5.5 Mbps) (6, 9, 12, 18, 24, DBPSK QPSK DQPSK 36, 48, 54 Mbps) (1 Mbps DSSS) (12, 18 Mbps) (2 Mbps DSSS) OFDM (6, 9, 12, 18, 4GFSK 16QAM DBPSK 24, 36, 48, 54 Mbps) (2 Mbps FHSS) (24...

Ngày tải lên: 14/08/2014, 09:21

... layer and therefore does not require routing, to send the packet directly to the mobile host. Home-agent Tunnel Termination in Mobile IPv6 In Mobile IPv6, the last hop router is a standard IPv6 router ... are separate and some- what different fast handover protocols for Mobile IPv4 (El Malki 2004) and Mobile IPv6 (Koodli 2003a). This chapter describes the overall architecture...

Ngày tải lên: 14/08/2014, 09:21

... foreign agent in Mobile IPv4 and home agent in Mobile IPv4 and Mobile IPv6 are examples of routing proxies. A routing proxy obscures the mobile host’s location by allowing the mobile host to use a ... incompatibility and duplicate work. In this case, APPLICATION PLATFORMS FOR NEXT- GENERATION MOBILE NETWORKS 165 framework, between SCFs and the framework, and between...

Ngày tải lên: 14/08/2014, 09:21

... designed for narrowband signals. The ITU-T standardized a wideband codec known as G.722 (ITU-T 19 86) in 19 86. It uses subband coding, where the input signal is split into two bands and separately ... images, GIF and PNG for bitmap graphics, H. 263 and MPEG-4 for video, and Scal- able Vector Graphics (SVG). MMS specifications and usages are given in (3GPP 2002b,e, 2003d). The generi...

Ngày tải lên: 14/08/2014, 09:21

... 3G, the large scale, pervasive, and heterogeneous nature of XG (as we envision it) will drive the demand for significantly more flexible and advanced cryptographic techniques. Next Generation Mobile ... techniques that are currently used in 2G and 3G systems. This includes secret-key cryptography, as used in GSM and 3GPP systems, public-key cryptography, as used in SSL, and...

Ngày tải lên: 14/08/2014, 09:21

... third generation standards groups, 3GPP 6 and 3GPP2 (cdma2000 Wireless IP Network Standards-Draft 2001). This section briefly addresses current 3G AAA schemes for all-IP networks. 3GPP The 3rd Generation ... bases (for example, 3GPP, 3GPP2, and WLAN hotspots), deployment considerations (for example, uniformity in standards-based 3G terminals versus variability in WLAN access devi...

Ngày tải lên: 14/08/2014, 09:21

... support for mobile devices 213 INDEX 379 generations of mobile- network technology 1, 4 GSM security standard 289 H.26x video coding standards 2 46 248 HCCA QoS standards for WLAN 121, 123 history of mobile- network ... 259 execution and process 275–278 interface definition 258 messages 268 OMA (Open Mobile Alliance) 281 operations 260 protocols 265 stack 260 – 261 technologies for...

Ngày tải lên: 14/08/2014, 09:21