Download An Introduction to LTE: LTE, LTE-Advanced, SAE and 4G Mobile by Christopher Cox PDF

By Christopher Cox

An advent to LTE explains the know-how utilized by 3GPP long-term Evolution. The booklet covers the total of LTE, either the innovations used for radio communique among the bottom station and the cellphone, and the options used for signalling conversation and information shipping within the advanced packet middle. It avoids pointless aspect, focussing as a substitute on conveying a legitimate knowing of the full system.
The e-book is aimed toward cellular telecommunication execs, who are looking to comprehend what LTE is and the way it really works. it really is valuable for engineers who're engaged on LTE, particularly people who find themselves moving from different applied sciences similar to UMTS and cdma2000, people who find themselves specialists in a single a part of LTE yet who are looking to comprehend the method as a complete, and those that are new to cellular telecommunications altogether. it's also suitable to these operating in non technical roles, corresponding to undertaking managers, advertising executives and highbrow estate experts. On finishing the e-book, the reader can have a transparent knowing of LTE, and may have the capacity to take on the extra specialized books and the 3GPP standards with self assurance.

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Extra info for An Introduction to LTE: LTE, LTE-Advanced, SAE and 4G Mobile Communications

Sample text

Unlike the air interface, these interfaces use protocols from layers 1 to 4 of the usual OSI model. At the bottom of the protocol stack, the transport network can use any suitable protocols for layers 1 and 2, such as Ethernet. Every network element is then associated with an IP address, and the fixed network uses the internet protocol (IP) to route information from one element to another across the underlying transport network. LTE supports both IP version 4 [22] and IP version 6 [23] for this task.

Finally, the underlying transport protocols transfer data and signalling messages from one point to another. 10 [18]. As noted earlier, the MME controls the high-level behaviour of the mobile by sending it signalling messages. However, there is no direct path between the MME and the mobile, through which those messages can be transported. To handle this, the air interface is divided into two levels, known as the access stratum (AS) and the non access stratum (NAS). The high-level signalling messages lie in the non access stratum and are transported using the access stratum protocols of the S1 and Uu interfaces.

The mobile receives the base station’s transmission and processes the information by passing it through the same sequence of protocols in reverse. It then reads the enclosed message and composes its reply, which is transmitted and received in exactly the same way. 2 Non Access Stratum Signalling The next signalling example is slightly more complex. 17(a) shows the message sequence for an EMM procedure known as a GUTI reallocation [45]. 15 UE capability transfer procedure. Reproduced by permission of ETSI.

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