By Christopher Cox
An creation to LTE explains the expertise utilized by 3GPP long-term Evolution. The ebook covers the full of LTE, either the suggestions used for radio conversation among the bottom station and the cellular phone, and the ideas used for signalling conversation and knowledge shipping within the advanced packet middle. It avoids pointless element, focussing in its place on conveying a valid figuring out of the total system.
The booklet is geared toward cellular telecommunication execs, who are looking to comprehend what LTE is and the way it really works. it truly is valuable for engineers who're engaged on LTE, significantly people who are shifting from different applied sciences corresponding to UMTS and cdma2000, people who find themselves specialists in a single a part of LTE yet who are looking to comprehend the approach as a complete, and people who are new to cellular telecommunications altogether. it's also proper to these operating in non technical roles, comparable to undertaking managers, advertising executives and highbrow estate experts. On finishing the ebook, the reader may have a transparent realizing of LTE, and should be capable of take on the extra specialized books and the 3GPP requirements with self assurance.
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Additional resources for An Introduction to LTE: LTE, LTE-Advanced, SAE and 4G Mobile Communications
The protocol stack has two planes. 10 interface. 29 High level protocol architecture of LTE. Relationship between the access stratum and the non access stratum on the air are only of interest to the network elements themselves. The protocol stack also has two main layers. The upper layer manipulates information in a way that is speciﬁc to LTE, while the lower layer transports information from one point to another. In the E-UTRAN, they are known as the radio network layer and transport network layer respectively.
The packet data network (PDN) gateway (P-GW) is the EPC’s point of contact with the outside world. Through the SGi interface, each PDN gateway exchanges data with one or more external devices or packet data networks, such as the network operator’s servers, the internet or the IP multimedia subsystem. Each packet data network is identiﬁed by an access point name (APN) . A network operator typically uses a handful of different APNs, for example one for its own servers and one for the internet.
The interface between the serving and PDN gateways is known as S5/S8. This has two slightly different implementations, namely S5 if the two devices are in the same network, and S8 if they are in different networks. For mobiles that are not roaming, the serving and PDN gateways can be integrated into a single device, so that the S5/S8 interface vanishes altogether. This can be useful because of the associated reduction in latency. 6. An MME pool area is an area through which the mobile can move without a change of serving MME.