Next Generation Mobile Systems 3G and Beyond phần 3 docx

... 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 ... 2.4-2.4 835 GHz 2.4-2.4 835 GHz bands and ( 83. 5 MHz) 5.725-5.825 GHz ( 83. 5 MHz) ( 83. 5 MHz) bandwidth DSSS, FHSS (30 0 MHz) OFDM DSSS DSSS, OFDM Number of 3 Indoor/ 4 In...

Ngày tải lên: 14/08/2014, 09:21

... 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 (3GPP2), and Mobile Wireless ... ALL-IP NEXT- GENERATION NETWORK ARCHITECTURE Table 2.1 Evolution of 3GPP specifications 3GPP Freeze Date Highlights Release 3GPP-R99 2000 Creation of UTRAN both in FDD and TDD CAM...

Ngày tải lên: 14/08/2014, 09:21

... monitors 35 0 35 3 static managers 35 4 35 7 seamless mobility support for mobile devices 2 13 INDEX 37 9 generations of mobile- network technology 1, 4 GSM security standard 289 H.26x video coding standards ... Services and Systems Aspects. 3GPP 1999e Unstructured Supplementary Service Data (USSD); stage 3. 3GPP 1999f User-to-user signaling (UUS); stage 1. 3GPP 1999g User-to-use...

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 ... . . . . 33 2.2 .3 MWIF 36 2.2.4 Limitationsof3GArchitectures 39 2 .3 Approach to a Next- generation Architecture . . . . . . . . . . . . . . . . . 44 2 .3...

Ngày tải lên: 14/08/2014, 09:21

... time, most of the standards have not yet been deployed or, in some cases, have not even been implemented as products. The large cellular standards organizations (3GPP and 3GPP2) are still discussing ... 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 of fast...

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 ... separate APIs, mobile terminal status and mobile terminal location. The mobile terminal status API allows applications to obtain the status of fixed, mobile, and IP-based...

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 ... 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

... images, GIF and PNG for bitmap graphics, H.2 63 and MPEG-4 for video, and Scal- able Vector Graphics (SVG). MMS specifications and usages are given in (3GPP 2002b,e, 2003d). The generic stereo and multichannel ... increase in available bandwidth, 3G and XG mobile systems offer new possibilities and services. One of these new services will be the ability to stream sound an...

Ngày tải lên: 14/08/2014, 09:21

... 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 proposal for a general public- key ... 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 techn...

Ngày tải lên: 14/08/2014, 09:21

... bases (for example, 3GPP, 3GPP2, and WLAN hotspots), deployment considerations (for example, uniformity in standards-based 3G terminals versus variability in WLAN access devices), and the availabil- ity ... 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 (cdma2000 Wireless I...

Ngày tải lên: 14/08/2014, 09:21