Next Generation Mobile Systems 3G and Beyond phần 1 doc

... 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 Generatio...

Ngày tải lên: 14/08/2014, 09:21

... etc VoP RAN Value-added S-HO Power control Intelligence 2 010 200 019 9 019 8 019 70 Intelligence 2 010 200 019 9 019 8 019 70 Intelligence 2 010 200 019 9 019 8 019 70 Intelligence 2 010 200 019 9 019 8 019 70 Intelligence 2 010 200 019 9 019 8 019 70 Intelligence 2 010 200 019 9 019 8 019 70 Figure ... architecture for 3GPP-R5 is described in documents from its Technical Specifi- catio...

Ngày tải lên: 14/08/2014, 09:21

... EVOLUTION 1 Mbps 2 Mbps 54 Mbps (11 a) 11 Mbps (11 b) 54Mbps (11 g) Data Rate PHY MAC & Above DSSS FH IR OFDM (11 a) DFS, TPC (11 h) CSMA/CA 19 97 19 99 2003 2006 IAPP (11 f) OFDM (11 a) CCK (11 b) > ;10 0 ... EVOLUTION Table 4 .1 IEEE 802 .11 standards summary Standard 802 .11 802 .11 a 802 .11 b 802 .11 g Date standard July 19 97 September September July 2003 approved...

Ngày tải lên: 14/08/2014, 09:21

... 802.1X sequence is illustrated in Figure 11 .12 . 11 .3.5 IP-based Cellular Networks All-IP cellular networks are currently being considered by the third generation standards groups, 3GPP 6 and 3GPP2 ... (such as 1xRTT, 1xEV-DO, 1xEV-DV), circuit-switched voice capability, and packet-switched data capability for simple IP and mobile IP services (see Figure 11 .15 ). Network acces...

Ngày tải lên: 14/08/2014, 09:21

... networks and AAA 334–338 invoking web services 260 IP backbone for integration of RANs 17 IP mobility 12 9 15 6 basics 13 4 13 6 context transfer 15 2 15 4 handover 13 8 14 1 header compression 15 1 15 2 intertechnology ... 315 –343 cryptographic algorithms and protocols 285– 314 dynamic monitors 347–350 for mobile devices 204–207, 308– 311 for WLAN 11 0 11 1, 12 5 12 8 in th...

Ngày tải lên: 14/08/2014, 09:21

... MHz Figure 4 .13 shows the PHY frame format of 802 .11 g. For backward compatibility, the Physical Layer Convergence Protocol (PLCP) preamble and header are the same in both 802 .11 and 802 .11 b. The Physical ... this parameter could 12 6 WIRELESS LAN EVOLUTION WEP@ 802 .11 -19 99 WiFi Protected Access (WPA) @10 /2002 TKIP & 802.1X TGi @2004 CCMP (mandatory) TKIP (optional) & 8...

Ngày tải lên: 14/08/2014, 09:21

... incompatibility and duplicate work. In this case, APPLICATION PLATFORMS FOR NEXT- GENERATION MOBILE NETWORKS 16 5 framework, between SCFs and the framework, and between the enterprise operator and the framework. ... 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 lo...

Ngày tải lên: 14/08/2014, 09:21

... Infrastructure Figure 7 .11 Middleware services for next- generation handsets 18 6 APPLICATION PLATFORMS FOR NEXT- GENERATION MOBILE NETWORKS 19 80 19 90 2000 2 010 IN AIN JTAPI JAIN/ Parlay OMA Parlay XXXX Extensible Routers Flexibility Year Figure ... handsets and external resources (such as printers, vending machines, displays, and handsets), handsets and ubiquitous compu...

Ngày tải lên: 14/08/2014, 09:21

... challenge for the new generation (Etoh and Takeshi 2004). 236 MULTIMEDIA CODING TECHNOLOGIES AND APPLICATIONS 10 1 10 2 10 3 10 4 10 5 20 0 20 40 60 80 10 0 12 0 14 0 16 0 18 0 Frequency in Hz Threshold ... the audio signal and w(k), k = 0, ,2N − 1, a window function of length 2N samples. The MDCT (Ramstat 19 91) is defined as: X(m) =  2 N 2N 1  k=0 x(k)w(k) cos ...

Ngày tải lên: 14/08/2014, 09:21

... s 1 and s 2 of n such that s 1 ≡ s 2 (mod p) and s 1 ≡−s 2 (mod q). Then, anybody could figure out p (and thereby factor n) simply by computing p = GCD(s 1 − s 2 ,n). Similarly, values of s 1 and ... <throw> and <catch> language constructs to handle and recover from errors in the processes. 10 Cryptographic Algorithms and Protocols for XG Craig Gentry and...

Ngày tải lên: 14/08/2014, 09:21