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Enhancement of IEEE 802.16M and LTE
The aim is to cost effectively deploy the RS in a LTE Advanced network and also to takes measures to enhance the QoS and conduct an analysis. free ppt download
Enhancing Message Dissemination
by Employing Relay Nodes and
Adaptive Antenna Systems in IEEE
802.16M and LTE AdvancedABSTRACT
Two approaches applied in the research towards
improving the LTE Advanced network performance.
Firstly the placement method should need to be
determined in order to cut down the cost as well as
maintain the QoS standard. The second scenario is
based on the performance evaluation of WiMAX2
network using relay station with in depth analysis of
how to increase throughput and reduce delay
parameters to improve overall network performance.
Keywords: AMC, LTE, QoS, OPNET, LTE Advanced, RSThesis Aims and Objective
• The aim of the thesis is to cost effectively deploy the RS in a LTE
• network and also to takes measures to enhance the QoS and conduct an
• To acquire detail knowledge of LTE Advanced and WiMAX2 technology
• To investigate different methods and techniques for RS deployment in
order to cut down the costs.
• To understand the different problems in maintaining cost effective
deployment of RS.
• To investigate and analyse different QoS characteristics such as
throughput, delay, SNR (signal to noise ratio) and network load.LTE (LONG Term Evolution)
• Long term evolution (LTE) is the next step forward in
cellular 3G services.
• LTE technology is a based on a 3GPP standard that
provides for a downlink speed of up to 150 megabits per
second (Mbps) and an uplink speed of up to 50 Mbps.
• LTE is a way for cellular communications to operate at
that high data rate.
• These high data rates will enables new applications and
services such as voice over IP, streaming multimedia,
videoconferencing or even a highspeed cellular modem.LTE Architecture
• The high level network architecture of LTE is
comprised of the following main three components:
• User equipment(UE)
• The Evolved UMTS terrestrial radio acess network(E
• The evolved packet coreContinued…..
• It is identical to the one used by UMTS and GSM, which
is actually a mobile equipment
• It comprises the following:
• Mobile termination
• Terminal equipment
• Universal integrated circuit board
• Handles the radio communication between the mobile and
evolved packet core.
• Evolved base station controls the mobile in one or more
Evolved Packet Core
It consists of the following
• Home subscriber system(HSS)
• Packet Data network(PDN)
• Serving Gateway(SGW)
• The mobility management entity(MME)
• The policy control and charging rules function(PCRF)Continued……
• Serving Gateway(SGW)
• The mobility management entity(MME)
• The policy control and charging rules function(PCRF)Multihop Communications
• Multihop communications is a way where
users get the services from BS through different
Point to multipoint
In point to multi point communication is a
topology where BS communicate with end
users in LOS and NLOS environment.
This is based on tree topology, where relay
communicate as a middle node between BS
and MS where one end is connected with BS
and other with MS.Continued…..
• Mesh Topology
• In mesh topology, all the devices can be connected with each
other within the same network. In mesh every node is connected
to other nodes within the same topology or network. An Overview of WiMAX
• A fourth generation (4G) technology.WiMAX
stands for Worldwide Interoperability for
Microwave Access. WiMAX is technically also
known as―IEEE 802.16‖
• WiMAX is a wireless communications standard
designed for creating Metropolitan Area
• Founded by Ensemble, CrossSpan, Harris
• Since January 2007, the IEEE 802.16 Working Group
has embarked on the development of a new
amendment of the IEEE 802.16 standard (i.e., IEEE
802.16m) as an advanced air interface to meet the
requirements of the International Telecommunication
Union— Radio communication / International Mobile
Telecommunications (ITUR / IMT)
• Main Features :
• Data transfer rates over the air excess of 1 Gb /s .
• Full compatible with existing Mobile wimax systems.
• Time to market advantage over other mobile
broadband wireless technologies
• Enable roaming and seamless connectivity across
IMT advanced requirements.
• Improving Coverage performance by utilizing
Multi hop relay architectures.WiMAX Architecture
. The architecture divided into three parts–
• Mobile stations used by the subscriber to access the
• The Access Service Network (ASN)– which is
owned by NAP and comprises one or more base
stations and one or more ASN gateways that form
the radio access network the subscriber and
provides the broadband access service
• The Connectivity Service Network (CSN) which is
owned by the NSP and provides IP connectivity and
all the IP core network
• WiMAX network reference model is a logical
representation of the network architecture.The NRM
identifies the functional entities in the architecture and the
reference point between the functional entities over which
interoperability is achieved.WiMAX PROTOCAL STACKFeatures supported by WiMAX
• Scalable bandwidth and high Data Rates.
• Adaptive modulation and coding .
• Link layer retransmission .
• Support for TDD and FDD.
• Orthogonal frequency division multiple access.
• Flexible and dynamic per user resource
• Support for advanced antenna techniques.WiMAX SPECIFICATION
Uses the licensed frequencies from 2 to 11 GHz
Supports Mesh network
Increase spectrum to 5 and 6 GHz
Provides QoS( for real time voice and video service)
Represents a 10 to 66GHzApplications
• Residential or Home and Broadband Internet Access:
• Medium and small size business:
• WiFi Hotspots.
• Multiplayer Interactive Gaming.
• VOIP and Video Conference
• Streaming Media
• Web Browsing and Instant Messaging
• Media Content DownloadsThank you
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