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

By Martin Sauter

Extensively up-to-date evaluate 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 prone and the cellular net 2.0.  Giving a valid technical advent to 3GPP instant platforms, this publication explains the choices taken in the course of standardization of the preferred instant community criteria this day, LTE, LTE-Advanced and HSPA+.  It discusses how those parts strongly effect one another and the way community features, to be had bandwidth, cellular gadget features and new program strategies will form the way in which we speak within the future.  This moment variation offers a finished and broad-reaching exam of a fast-moving know-how so as to be a welcome replace for researchers and pros alike. 

Key features:

  • Fully up to date and extended to incorporate new sections together with VoLTE, the evolution to 4G, cellular net entry, LTE-Advanced, wireless safeguard and backhaul for instant networks
  • Describes the winning commercialization of net 2.0 companies equivalent to 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 program to voice-optimized and multimedia devices

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

Example text

The Secondary Common Control Physical Channel (S-CCPCH) — this physical channel serves several purposes and thus carries a number of different logical channels. First, it carries paging messages that are used by the network to search for mobile devices for incoming calls, SMS messages, or when data packets arrive after a long period of inactivity. The channel is also used to deliver IP packets and control messages to devices which only exchange small quantities of data at a particular time and thus do not need to be put into a more active state.

Up to six cells can be part of the active set. In practice, however, most networks limit the number of cells in the active set to two or three. Otherwise, the benefit of multiple transmissions that can be combined in both the network and the mobile station is outweighed by the additional capacity required in both the radio network and on the air interface. To improve the capacity of the network, around 30–40% of all dedicated connections in a network are in soft handover state, even if the users are not moving.

Thus, there is no longer a need to assign spreading codes or to modify the length of a spreading code to change the bandwidth assignment. HS-DPSCH timeslots are assigned to devices via the High-Speed Shared Control Channel (HS-SCCH). This channel has to be monitored by all mobile devices that the RNC has instructed to use a shared channel. The HS-DPSCH uses a fixed spreading code length of 16 and the HS-SCCH uses a spreading code length of 256. 2 Multiple Spreading Codes To increase transmission speeds, mobile devices can listen to more than a single highspeed downlink shared channel.

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