How LTE works ppt

lte advanced tutorial ppt and lte applications ppt and lte security architecture ppt
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Published Date:09-03-2017
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Enhancing Message Dissemination by Employing Relay Nodes and Adaptive Antenna Systems in IEEE 802.16M and LTE AdvancedABSTRACT PROBLEM STATEMENT 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 AIM: • The aim of the thesis 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 OBJECTIVE: • 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 high-speed 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- UTRAN) • The evolved packet coreContinued….. User Equipment: • 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 • E-UTRAN • Handles the radio communication between the mobile and evolved packet core. • Evolved base station controls the mobile in one or more stationsContinued…… Evolved Packet Core It consists of the following • Home subscriber system(HSS) • Packet Data network(PDN) • Serving Gateway(S-GW) • The mobility management entity(MME) • The policy control and charging rules function(PCRF)Continued…… • Serving Gateway(S-GW) • The mobility management entity(MME) • The policy control and charging rules function(PCRF)Multi-hop Communications • Multi-hop communications is a way where users get the services from BS through different hops. Point to multipoint In point to multi point communication is a topology where BS communicate with end users in LOS and NLOS environment. Relay Topology 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 Technology(802.16m) • 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 Networks(MANs). • Founded by Ensemble, CrossSpan, Harris & NokiaIEEE 802.16m • 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 network • 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 functionsContinued… • 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 allocation. • Support for advanced antenna techniques.WiMAX SPECIFICATION • 802.16a -Uses the licensed frequencies from 2 to 11 GHz -Supports Mesh network • 802.16b -Increase spectrum to 5 and 6 GHz -Provides QoS( for real time voice and video service) • 802.16c -Represents a 10 to 66GHzApplications • Residential or Home and Broadband Internet Access: • Medium and small size business: • WiFi Hotspots. • Multi-player Interactive Gaming. • VOIP and Video Conference • Streaming Media • Web Browsing and Instant Messaging • Media Content DownloadsThank you You can find us