By Christopher Cox
Following on from the profitable first version (March 2012), this booklet provides a transparent clarification of what LTE does and the way it really works. The content material is expressed at a structures point, supplying readers the chance to understand the main elements that make LTE the new subject among owners and operators around the globe. The e-book assumes not more than a easy wisdom of cellular telecommunication platforms, and the reader isn't anticipated to have any earlier wisdom of the advanced mathematical operations that underpin LTE.
This moment version introduces new fabric for the present country of the undefined, reminiscent of the recent positive aspects of LTE in Releases eleven and 12, particularly coordinated multipoint transmission and proximity companies; the most brief- and long term suggestions for LTE voice calls, particularly circuit switched fallback and the IP multimedia subsystem; and the evolution and present kingdom of the LTE marketplace. It additionally extends a few of the fabric from the 1st version, reminiscent of inter-operation with different applied sciences similar to GSM, UMTS, instant neighborhood region networks and cdma2000; extra good points of LTE complex, particularly heterogeneous networks and site visitors offloading; info delivery within the advanced packet center; assurance and potential estimation for LTE; and a extra rigorous therapy of modulation, demodulation and OFDMA. the writer breaks down the method into logical blocks, by means of at first introducing the structure of LTE, explaining the
techniques used for radio transmission and reception and the final operation of the approach, and concluding with extra really good themes comparable to LTE voice calls and the later releases of the requisites. This methodical strategy permits readers to maneuver directly to take on the requirements and the extra complex texts with confidence.
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Additional info for An Introduction to LTE: LTE, LTE-Advanced, SAE, VoLTE and 4G Mobile Communications
Serving GPRS support nodes (SGSNs) route data between the base stations and the GGSNs, and handle the signalling messages that set up, manage and tear down the data streams. Once again, a typical network might just contain a few of each device. The home subscriber server (HSS) is a central database that contains information about all the network operator’s subscribers and is shared between the two network domains. It amalgamates the functions of two earlier components, which were known as the home location register (HLR) and the authentication centre (AuC).
Christopher Cox. © 2014 John Wiley & Sons, Ltd. Published 2014 by John Wiley & Sons, Ltd.
Once these capabilities were all in place, WiMAX started to look like any other 3G communication system, albeit one that had been optimized for data from the very beginning. 1 The Growth of Mobile Data For many years, voice calls dominated the traffic in mobile telecommunication networks. The growth of mobile data was initially slow, but in the years leading up to 2010 its use started to increase dramatically. 5 shows measurements by Ericsson of the total traffic being handled by networks throughout the world, in petabytes (million gigabytes) per month .