By Martin Sauter(auth.)
Extensively up to date assessment of present and destiny community applied sciences, applications and devices
This booklet follows on from its winning predecessor with an advent to subsequent new release community applied sciences, cellular units, voice and multimedia companies and the cellular internet 2.0. Giving a legitimate technical advent to 3GPP instant platforms, this booklet explains the selections taken in the course of standardization of the most well-liked instant community criteria this day, LTE, LTE-Advanced and HSPA+. It discusses how those components strongly impression one another and the way community functions, on hand bandwidth, cellular machine functions and new software innovations will form the way in which we converse within the future. This moment version provides a finished and broad-reaching exam of a fast-moving expertise on the way to be a welcome replace for researchers and pros alike.
- Fully up-to-date and elevated to incorporate new sections together with VoLTE, the evolution to 4G, cellular web entry, LTE-Advanced, wireless safety and backhaul for instant networks
- Describes the winning commercialization of internet 2.0 providers akin to fb, and the emergence of app shops, capsules and smartphones
- Examines the evolution of cellular units and working structures, together with ARM and x86 structure and their software to voice-optimized and multimedia devices
Chapter 1 Evolution from 2G over 3G to 4G (pages 1–7):
Chapter 2 past 3G community Architectures (pages 09–93):
Chapter three community capability and utilization eventualities (pages 95–148):
Chapter four Voice over instant (pages 149–239):
Chapter five Evolution of cellular units and working platforms (pages 241–296):
Chapter 6 cellular net 2.0, Apps, and proprietors (pages 297–356):
Chapter 7 end (pages 357–360):
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Extra info for 3G, 4G and Beyond-Bringing Networks, Devices and the Web Together, Second Edition
To further the increase data rates, 3GPP Release 10 introduces triple-channel and quadchannel operation in up to two different frequency bands . In each band, all channels need to be adjacent. 4 Mbit/s, respectively. 8 Mbit/s, respectively. 5 Mbit/s if 64QAM and MIMO are used on all channels. For further flexibility, the specification foresees that MIMO can be used selectively on some channels but not on others. In summary, it should be noted that while the list of supporters of these features in 3GPP includes major network operators and manufacturers, it is not yet certain if network operators will actually attempt to use UMTS on more than two or three channels.
Data are collected and distributed by two RNCs. However, only one of the two RNCs, referred to as the Serving-Radio Network Controller (S-RNC), communicates with the core network. The other RNC, referred to as the Drift-Radio Network Controller (D-RNC), communicates with the S-RNC. If the user moves further into the area covered by NodeB 2 and NodeB 3, the mobile will at some point lose contact with NodeB 1. At this point, the involvement of the RNC controlling NodeB 1 is no longer required. The current S-RNC then requests the SGSN to promote the current D-RNC as the new S-RNC.
In this case, the network puts the connection into Cell-FACH state as described earlier or even into Cell-PCH or URAPCH state to reduce energy consumption even further. The downside of this is that a state change back into Cell-DCH state takes a long time and that little or no data can be transferred during the state change. In Release 7 and 8, the 3GPP standards were thus extended to also use the high-speed downlink shared channels for these states, as described in [18, 19]. In practice this is done as follows: • Enhanced Cell-FACH — in the standard Cell-FACH state the mobile device listens to the S-CCPCH in the downlink as described earlier for incoming RRC messages from the RNC and for user data (IP packets).