共享：LTE最新书籍

liyuanliu

Evolved Packet System (EPS) The LTE and SAE Evolution of 3G UMTS

Pierre Lescuyer and Thierry Lucidarme
Both of
Alcatel-Lucent, France

With more than two billion customers, there is no doubt that 2G GSM and 3G UMTS
cellular technologies are a worldwide success, adopted by most countries and network
operators. The 3G UMTS technology has significantly evolved since the first declination.
The first release of the standard, published in 1999, was mostly oriented towards dedicated
channel allocation, and circuit-switched service support. Later on, the standard evolved to
high-speed packet radio interface for downlink transmission (HSDPA for High Speed
Downlink Packet Access) and uplink transmission HSUPA as a clear orientation towards
IMS (IP Multimedia Subsystem) and IP-based services.
EPS (Evolved Packet System) represents the very latest evolution of the UMTS standard.
EPS is also known by other acronyms related to technical study items being worked on at
3GPP standard committees: LTE (Long Term Evolution), which is dedicated to the
evolution of the radio interface, and SAE (System Architecture Evolution), which focuses
on Core Network architecture evolution.
Although still a 3G-related standard, EPS proposes a significant improvement step, with a
brand new radio interface and an evolved architecture for both the Access and the Core
Network parts. The two major disruptions brought by EPS are:
* Improved performances – characterized by a spectrum efficiency which is twice as
large as HSDPA/HSUPA.
* A packet-only system – resulting in a unified and simplified architecture.
EPS is specified as part of the 3GPP family and, from that perspective, EPS will benefit
from the same ecosystem that made the success of GSM and UMTS technologies. In
addition, it is believed that technical and architectural evolutions brought by EPS prefigure
future 4G networks (also known as IMT-Advanced networks).
This book presents the EPS evolution, as introduced in Release 8 of the 3GPP standard. It
is not a substitute to the 3GPP standard, and advanced readers willing to dig into any specific
domain of EPS are encouraged to consult the 3GPP specification documents which are
referenced, when appropriate, through the different chapters.
The objective here is rather to provide a comprehensive system end-to-end vision of EPS,
from the radio interface to the service level, including network architecture, radio protocols,
as well as subscriber and session management. As EPS was not thought of as a completely
new and standalone technology, the authors have also tried to show the inheritance and
relations with 2G GSM and early 3G UMTS in terms of ground principles and technical
aspects.
The technical content of this book is based on early documents and standards available at
the time of writing. For that reason, the view presented here might be slightly different from
the actual reference standard. This should, however, be constrained to very limited parts or
specific details of this book.

liyuanliu

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                         PART    1

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         PART 2

smaa

剛才看了一下內容
特別是physical layer的部分
內容相當廣, 但深度稍不足
不過仍是好書

jumpyists

jumpyists

guihe

thanks

kevinwjs

ok

kevinwjs

3q