Download - Long Term Evolution (LTE)
Long-Term Evolution (LTE) .
Submitted byHussein M. Al-Sanabani
SupervisorYrd.Doç.Dr. MURAT İSKEFİYELİ
By
Hus
sein
AL-
Sana
bani
Topics
IntroductionIntroduction
LTE Network ArchitectureLTE Network Architecture
LTE Technologies LTE Technologies
Evolution of LTE-AdvancedEvolution of LTE-Advanced
ResearchesResearches
ReferencesReferences
By Hussein AL-Sanabani
IntroductionWelcome to the world of LTE! B
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What is LTE?
In Nov. 2004, 3GPP began a project to define the long-term evolution (LTE) of Universal Mobile Telecommunications System (UMTS) cellular technology Higher performance (Data rates && Reduced delay/latency ) Backwards compatible Wide application Works with IP network
LTE is the next generation of Mobile broadband technology
By Hussein AL-Sanabani
Evolution of Radio Access Technologies
LTE (3.9G) : 3GPP release 8~9
LTE-Advanced :3GPP release 10+
802.16d/e
802.16m
By Hussein AL-Sanabani
3GPP UMTS Long-Term Evolution
By Hussein AL-Sanabani
LTE TARGETs Packet-Domain-Services only (e.g. VoIP) TCP/IP- based layers
Higher peak data rate/ user throughput 150 Mbps DL/75 Mbps UL @20MHz bandwidth
Reduced delay/latency user-plane latency<10ms
Improved spectrum efficiency up to 200 active users in a cell @5MHz bandwidth
Mobility optimized for low-mobility (up to 15Km/h), supported with high performance for medium mobility (up to 120 Km/h), supported for high mobility (up to 500 Km/h)
Multimedia broadcast & multicast services
Spectrum flexibility ( Support of scalable bandwidth: 1.4, 3, 5, 10, 15, 20 MHz)
Support for interworking with legacy networks
Cost-efficiency:1. Cost-effective when add new node (upgrade) in LTE network.2. Cost-effective migration from legacy networks
Coverage up to 30 Km By Hussein AL-Sanabani
Key Factors of LTE
By Hussein AL-Sanabani
LTE Network ArchitectureWhat is the Architecture of LTE Network? B
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The Evolved Packet Core
Circuit and Packet domains
By Hussein AL-Sanabani
LTE Network Architecture
E-UTRAN = Evolved UMTS Terrestrial Radio Access Network By Hussein AL-Sanabani
Network Architecture – E-UTRAN
User Equipment
Evolved Node B (eNB) Functionalities: 1) Provides radio resource management functions, and handover
events
2) Provides admission control and scheduling
By Hussein AL-Sanabani
Network Architecture Evolved Packet Core
Mobility Management Entity key control-node for the LTE access-network.
Functionalities: deals with the control plane.1) Manages mobility and provides security
Responsible for control procedures, such as authentication and
security, and storing of users’ position information
By Hussein AL-Sanabani
Network Architecture Evolved Packet Core (Cont)
Serving Gateway Functionalities: deal with the user plane
1) Responsible for routing and forwarding user data packets
2) Provides MobilityActs as mobility anchor for inter-eNB handovers and for mobility between LTE and other 3GPP(mobility interface to other networks such as 2G/3G).
By Hussein AL-Sanabani
Network Architecture Evolved Packet Core (Cont)
Packet Data Network Gateway Functionalities: deal with the user plane
1) Provides connectivity to the UE to external packet data networks (IP networks (Internet)).
2) Performs policy enforcement, packet filtering for each user, support charging, etc.
3) Act as the anchor for mobility between 3GPP and non-3GPP technologies (WiMAX)
By Hussein AL-Sanabani
LTE TechnologiesWhat is an LTE Network made up of? B
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LTE Technologies
Spectrum Flexibility
OFDMA (Orthogonal Frequency Division Multiple Access) for downlink
SC-FDMA (Single Carrier – Frequency Division Multiple Access) for uplink
MIMO (Multiple Input Multiple Output)
By Hussein AL-Sanabani
LTE spectrum (bandwidth and duplex) flexibility
By Hussein AL-Sanabani
FDM vs. OFDM
By Hussein AL-Sanabani
Difference between OFDM and OFDMA
LTE uses OFDMA (Orthogonal Frequency Division Multiple Access) more advanced form of OFDM where subcarriers are allocated to
different users over time
By Hussein AL-Sanabani
LTE downlink OFDMA
LTE provides QPSK, 16QAM, 64QAM as downlink modulation schemes
Cyclic prefix is used as guard interval
15 kHz subcarrier spacing
Scalable bandwidth By Hussein AL-Sanabani
LTE Uplink (SC-FDMA)
l Similar to OFDM signal, but… in OFDM, each sub-carrier only carries information
related to one specific symbol, in SC-FDMA, each sub-carrier contains information of
ALL transmitted symbols.
By Hussein AL-Sanabani
SC-FDMA vs. OFDMAA salient advantage of SC-FDMA over OFDMA is low to Peak to Average Power Ratio (PAPR) :
Increasing battery life
By Hussein AL-Sanabani
Multi-antenna techniques( MIMO)
By Hussein AL-Sanabani
Advantages of LTE
Provides low latency
Increased data transfer speed
High spectral efficiency
Support of variable bandwidth
FDD and TDD within a single radio access technology
More cost effectiveness
Compatibility and interworking with earlier 3GPP Releases
Efficient Multicast/Broadcast
Improvements over 3G network
By Hussein AL-Sanabani
Evolution of LTE-Advanced
By
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AL-
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bani
Evolution of LTE-Advanced
Carrier aggregation
Enhanced uplink and Downlink multiple access
Enhanced Multi-antenna Transmission Techniques Downlink 8 antennas Uplink 4 antennas
Support of Larger Bandwidth in LTE-Advanced
Support heterogeneous network
Self Optimizing networks (SON)
By Hussein AL-Sanabani
LTE vs. LTE-Advanced
By Hussein AL-Sanabani
Comparing LTE, LTE-Advanced and IMT-Advanced Requirements
By Hussein AL-Sanabani
ResearchesResearches
By
Hus
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AL-
Sana
bani
Researches (1)Researches (1)
Title: An efficient power-saving transmission mechanism in LTE
macrocell-femtocell hybrid networks
Author: Yao-Liang Chung
Institute: Department of Communication Engineering, National Taipei
University
Published on: 2014 Information Networking (ICOIN), International Conference
By Hussein AL-Sanabani
Research: 1 contcont..
This paper discusses how to improve the energy - saving performance by using LTE macrocell-femtocell hybrid networks.
This mechanism is able to greatly improve the energy -saving performance, while maintaining the required data rate, by intelligently activating /deactivating each Femto Group (FG).
The results of this paper demonstrate that the proposed approach is able to achieve a much better energy -saving performance, when compared it with the existing approaches .
By Hussein AL-Sanabani
Research: 1 cont.
By Hussein AL-Sanabani
Researches (2)Researches (2)
Title: LTE for Vehicular Networking: A Survey
Author: Araniti, G. ; Campolo, C. ; Condoluci, M. ; Iera, A.
more authors
Institute: University Mediterranea of Reggio Calabria
Published on: 2013 Communications Magazine, IEEE (Volume:51 , Issue: 5 )
By Hussein AL-Sanabani
Research: 2 contcont..
In this paper discuss the usability of LTE to support vehicular applications, as they currently do by IEEE 802.11p (e.g., road safety and traffic efficiency services). And also support the applications mainly benefit from this promising cellular technology (e.g., VoIP, file sharing, video streaming, web browsing, social networking, blog uploading, gaming, cloud access).
They say how to Take advantage from strengths of LTE (high capacity, wide coverage, high performance) to face the well-known drawbacks of IEEE 802.11p (poor scalability, low capacity, intermittent connectivity).
LTE has overcome over IEEE 802.11p in terms of coverage (e.g.,In rural areas where the car density is low.
By Hussein AL-Sanabani
Thank You!I’d like to answer any questions that you have…
By
Hus
sein
AL-
Sana
bani
References
http://www.3gpp.org/technologies/tutorials-tools
http://www.rohde-schwarz.com/en/home_48230.html
http://www.ericsson.com/ericsson/corpinfo/publications/review/2007_03/files/5_LTE_SAE.pdf
By Hussein AL-Sanabani