Telecommunications technology is currently experiencing a very developmental
very fast. Starting from the development of 1G up to a lot of 4G
developed at this time. This is very demanding for both operators and consumers
able to use and develop from technological advances
that telecommunications. because if not then a country will experience
lagging behind in the development of telecommunications technology.
Within 10 years since the birth of AMPS has occurred
very rapid development with various technological inventions or innovations
communication and at the end of the 90s came 2G (Second Generation) technology.
The main difference between 1G and 2G technology is that 1G still uses the system
Analog while 2G already uses a digital system. As is
the presence of second generation technology, new cellular technologies emerge
that is, GSM. which is a wireless2G communication system. In the beginning
in the 2000s there was generation 2.5 (2.5 G) technology which had
faster data transfer capabilities. The best known of this generation is
GPRS (General Packet Radio Service) and EDGE (Enhanced Data rates for GSM
Evolution). A protocol that regulates how the data transfer works on the system
wireless GSM. In theory EDGE data transfer speeds can reach 384
Kbps. After the first generation, second generation and 2.5 G technology, then
followed by the third generation (3G) which offers advantages
better yet both in terms of features and data transfer capabilities
data transfer speeds are faster than before in delivering services
which is needed by the customer. Furthermore, after 3G technology
network development and various supporting equipment will continue
Until now, LTE (Long Term Evolution) technology was born.

Long Term Evolution (LTE) is a generation of telecommunications technology
cellular. By default, LTE provides uplink speeds of up to 50 megabits per
seconds (Mbps) and downlink speeds of up to 100 Mbps. No doubt, LTE
will bring many benefits to cellular networks.

LTE is the evolution of the network
mobile prepared for 4G technology. The purpose of development
technology on 3GPP is as follows:

  1. The need for 3G network development in the future
  2. Customer needs for high data rates and quality of
    service (QOS).
  3. Development of packet switching technology.
  4. Reducing operational costs due to simple network architecture.
    LTE bandwidth is from 1.4 MHz to 20 MHz. Network operator
    can choose different bandwidths and provide different services
    based on spectrum. That is also the design goal of LTE that is to
    improve spectrum efficiency on the network, which allows operators to
    provide more data packages on a bandwidth.
    Some other advantages of 4G LTE are;
    a. Supports varying bandwidths, which are 1.4, 3, 5, 10, 15 and 20
    b. Support for all frequency waves currently used
    by the IMT and ITU-R systems, compatible with 3GPP technology
    before and other technology.
    c. In urban and urban areas, higher band frequencies (such as
    2.6 GHz in the European Union) is used to support high speeds
    mobile broadband.
    d. Support for MBSFN (Multicast Broadcast Single Frequency
    Network). This feature can provide services such as Mobile TV
    uses LTE infrastructure, and is a competitor for services
    DVB-H based on broadcast TV.

LTE network architecture is designed for the purpose of supporting packet traffic
switching with high mobility, quality of service (QOS), and latency
small. This packet switching approach allows all services to be included
Voice services use packet connections. Therefore on the network architecture
LTE is designed as simple as possible, which only consists of two nodes namely
eNodeB and mobility management entity / gateway (MME / GW). This is very
different from the GSM and UMTS technology architectures that have more structure
complex in the presence of a radio network controller (RNC). Some advantages
which can be obtained with only a single node on the access network is
reduction of latency and RNC process load distribution for some eNodeB.
Elimination of RNC on access networks is possible because LTE is not
support soft handover.

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