By Christopher Cox
An creation to LTE explains the know-how utilized by 3GPP long-term Evolution. The e-book covers the complete of LTE, either the recommendations used for radio conversation among the bottom station and the cell phone, and the options used for signalling verbal exchange and knowledge delivery within the developed packet center. It avoids pointless element, focussing as a substitute on conveying a legitimate realizing of the total system.
The e-book is geared toward cellular telecommunication pros, who are looking to comprehend what LTE is and the way it really works. it's useful for engineers who're engaged on LTE, particularly people who are shifting from different applied sciences similar to UMTS and cdma2000, those who find themselves specialists in a single a part of LTE yet who are looking to comprehend the approach as a complete, and those that are new to cellular telecommunications altogether. it's also appropriate to these operating in non technical roles, resembling undertaking managers, advertising executives and highbrow estate experts. On finishing the ebook, the reader can have a transparent realizing of LTE, and may be ready to take on the extra specialized books and the 3GPP requirements with self belief.
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Extra info for An Introduction to LTE: LTE, LTE-Advanced, SAE and 4G Mobile Communications
3. 3rd Generation Partnership Project 2 (2010) Welcome to the 3GPP2 Homepage. Available at: http://www. org (accessed 12 December, 2011). 4. Ericsson (November 2011) Trafﬁc and Market Data Report. 5. Shannon, C. E. (1948) A mathematical theory of communication, The Bell System Technical Journal , 27, 379–428 and 623–656. 6. 913 (January 2009) Requirements for Evolved UTRA (E-UTRA) and Evolved UTRAN (E-UTRAN), Release 8. 7. 278 (December 2009) Service Requirements for the Evolved Packet System (EPS), Release 8.
As with the serving gateway, a typical network might contain a handful of MMEs, each of which looks after a certain geographical region. Each mobile is assigned to a single MME, which is known as its serving MME , but that can be changed if the mobile moves sufﬁciently far. The MME also controls the other elements of the network, by means of signalling messages that are internal to the EPC. Comparison with UMTS and GSM shows that the PDN gateway has the same role as the gateway GPRS support node (GGSN), while the serving gateway and MME handle the data routing and signalling functions of the serving GPRS support node (SGSN).
25 MHz. Secondly, cdma2000 is backwards compatible with IS-95, in the sense that IS-95 mobiles can communicate with cdma2000 base stations and vice versa, whereas UMTS is not backwards compatible with GSM. Thirdly, cdma2000 segregates voice and optimized data onto different carrier frequencies, whereas UMTS allows them to share the same one. The ﬁrst two issues hindered the penetration of WCDMA into the North American market, where there were few allocations of bandwidths as wide as 5 MHz and there were a large number of legacy IS-95 devices.