Next Generation Mobile Systems 3G and Beyond phần 2 docx

... etc VoP RAN Value-added S-HO Power control Intelligence 20 10 20 00199019801970 Intelligence 20 10 20 00199019801970 Intelligence 20 10 20 00199019801970 Intelligence 20 10 20 00199019801970 Intelligence 20 10 20 00199019801970 Intelligence 20 10 20 00199019801970 Figure ... of Japan. 2 3GPP2’s organizational partners include ARIB, CCSA, TIA, TTA, and TTC. 24 THE ALL-IP NEXT...

Ngày tải lên: 14/08/2014, 09:21

... 8 02. 11 standards summary Standard 8 02. 11 8 02. 11a 8 02. 11b 8 02. 11g Date standard July 1997 September September July 20 03 approved 1999 1999 Frequency 2. 4 -2. 4835 GHz 5.15-5.35 GHz 2. 4 -2. 4835 GHz 2. 4 -2. 4835 ... scheme for the systems of IMT -20 00 and beyond. 3 .2. 3 Principles of DS-CDMA and IS-95 This section reviews the principle of DS-CDMA, on which the 3G s...

Ngày tải lên: 14/08/2014, 09:21

... delivery 17, 47 SOAP and kSOAP 26 3, 26 8 speech coding technologies 22 5, 22 7 23 3 directions 24 2 issues 24 1 standards 22 8 23 3 unified with audio 24 2 SSL (secure socket layer) 29 5 static security ... 134–150 mobile TV phone 25 0 MPEG audio coding standards 23 8 24 1 MPEG video coding standards 24 6 24 8 multimedia applications for mobile devices 25 0 25 6 technologie...

Ngày tải lên: 14/08/2014, 09:21

... 19 2. 2 3GArchitectures 20 2. 2.1 UMTS 21 2. 2 .2 CDMA2000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 2. 2.3 MWIF 36 2. 2.4 Limitationsof3GArchitectures 39 2. 3 Approach to a Next- generation ... for the Next Generation 1 1 Evolution of Mobile Networks and Services 3 1.1 TheEvolutionofMobileNetworks 4 1 .2 TrendsinMobileServices 6 1.3 WhyNext -generati...

Ngày tải lên: 14/08/2014, 09:21

... radar systems. Current research is focused on the coexistence of wireless devices in the 2. 4-GHz band and other bands. • The IEEE 8 02. 15 .2 standard specifically addresses coexistence between WLAN and Bluetooth ... separate versions of Mobile IP for IPv4 (Perkins 20 02b) and IPv6 (Johnson et al. 20 04). Mobile IP effectively separates the routing identifier and endpoint ide...

Ngày tải lên: 14/08/2014, 09:21

... (Hohler et al. 20 00; Zuidweg 20 02) . APPLICATION PLATFORMS FOR NEXT- GENERATION MOBILE NETWORKS 171 untrusted third-party applications usually execute inside the third-party SLEE environment and have ... 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 allow...

Ngày tải lên: 14/08/2014, 09:21

... 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 ... user surroundings, and to store and manage users’ confidential information. On the basis of the Next Generation Mobile Systems. EditedbyDr.M.Etoh  20 05 John Wiley &...

Ngày tải lên: 14/08/2014, 09:21

... codec, and the AMR codec (3GPP 1999d). For wideband speech, the best representatives are the ITU-T G. 722 .2 AMR-WB codec (ITU-T 20 02) and the MPEG-4 version of CELP (Nishiguchi and Edler 20 02) . Recent ... standards Standard Applications Sampling Bitrates MPEG-1 Broadcasting, storage, multimedia, and telecommunications 32, 44.1, 48 kHz 32 320 kbps MPEG -2 BC Multichannel audio...

Ngày tải lên: 14/08/2014, 09:21

... members and that their keys pairs are: ((n 1 ,e 1 ), (p 1 ,q 1 ,d 1 )), ((n 2 ,e 2 ), (p 2 ,q 2 ,d 2 )), . . . , ((n r ,e r ), (p r ,q r ,d r )). CRYPTOGRAPHIC ALGORITHMS AND PROTOCOLS FOR XG 28 7 information ... 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 us...

Ngày tải lên: 14/08/2014, 09:21

... IEEE 8 02. 1X standard originally focused on IEEE 8 02. 3 (Ethernet) and IEEE 8 02. 5 (Token-ring) LANS, but it is now being used in wireless security with the IEEE 8 02. 11 standard. The IEEE 8 02. 1X uses ... 3GPP 6 and 3GPP2 (cdma2000 Wireless IP Network Standards-Draft 20 01). This section briefly addresses current 3G AAA schemes for all-IP networks. 3GPP The 3rd Generation Partne...

Ngày tải lên: 14/08/2014, 09:21