3G, 4G and Beyond: Bringing Networks, Devices and the Web by Martin Sauter PDF

By Martin Sauter

ISBN-10: 1118341481

ISBN-13: 9781118341483

Extensively up-to-date assessment of present and destiny community applied sciences, applications and devices 

This ebook follows on from its winning predecessor with an advent to subsequent new release community applied sciences, cellular units, voice and multimedia prone and the cellular internet 2.0.  Giving a legitimate technical advent to 3GPP instant platforms, this e-book explains the selections taken in the course of standardization of the preferred instant community criteria this day, LTE, LTE-Advanced and HSPA+.  It discusses how those components strongly effect one another and the way community services, on hand bandwidth, cellular gadget services and new program thoughts will form the way in which we converse within the future.  This moment version offers a finished and broad-reaching exam of a fast-moving expertise in an effort to be a welcome replace for researchers and execs alike. 

Key features:

  • Fully up-to-date and multiplied 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 net 2.0 prone reminiscent of fb, and the emergence of app shops, drugs 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

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Additional resources for 3G, 4G and Beyond: Bringing Networks, Devices and the Web Together

Example text

Instead, it was decided to introduce multicode transmissions in a single dedicated channel to allow the mobile to split its data into several code channels which are then transported simultaneously. This concept is similar to the concept of using several (shared) channels in the downlink to increase the data rates. 76 Mbit/s on the physical layer. In practice, data rates are lower in a similar way to those described earlier for HSDPA. Many networks still only support up to 2 Mbit/s in the uplink direction (E-DCH category 5), but it can be observed that some networks have now been upgraded to also support E-DCH category 6 with data rates in practice of around 4 Mbit/s.

2 Mbit/s in the downlink. However, it should be once more noted at this point that such data rates can only be achieved by very few users of a cell. Details are given in Chapter 3. 36 3G, 4G and Beyond–Bringing Networks, Devices and the Web Together As uplink transmissions are usually power limited, MIMO has only been considered for the downlink direction. 4 16QAM Modulation and Dual-Carrier Operation in the Uplink In the uplink direction, no changes were made to the modulation scheme in 3GPP Release 6.

Otherwise, connection-oriented higher-layer protocols such as TCP misinterpret air interface packet errors as congestion and slow down the transmission. To react to transmission errors more quickly, it was decided not to implement the HSDPA scheduler in the RNC, as was done before for dedicated channels, but to assign this task to the base station. HSDPA uses the Hybrid Automated Retransmission Request (HARQ) scheme for this purpose. With HARQ, data frames with a fixed length of 2 ms have to be immediately acknowledged by the mobile device.

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3G, 4G and Beyond: Bringing Networks, Devices and the Web Together by Martin Sauter

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