1. N AME OF THE T OPIC : Prepared by: Sayed Mahfuz Mahmud Istiyak Ahmed M.Sc. Engr.(CSE), Summer 2011 ID No: 012112022 Department of CSE United International University Presentation Date: 21-08-2011 LTE-Simplifying the Mobile Communication CSE 6065 - Advanced Mobile Communications

2. LTE needed for higher data rates Motivation LTE needed for cheaper infrastructure- cost savings LTE needed for high quality of services(QoS) LTE needed for capacity crunch LTE needed for PS optimized system LTE needed for competitive reasons Reasonable terminal power consuming M.Sc. Engr.(CSE), Summer 2011, ID No: 012112022, United International University

3. Work Plan  Kick-off in Advance Mobile Communication Class at UIU on 21-05-2011 Study Item:  Introduction to Wireless and Mobile Systems.  Issues and Challenges of Next Generation Mobile Communications.  Comparison of technology.  Detailed start of standard work: - 01, Aug 2011  First deployed – 14, Aug 2011 M.Sc. Engr.(CSE), Summer 2011, ID No: 012112022, United International University

4.  Provides the basic description, overview of the 3GPP Release 8 Long Term Evolution (LTE) network architecture with the used technologies which Simplifying the Migration to 4G Networks.  Necessity of LTE and the scenarios. Objectives M.Sc. Engr.(CSE), Summer 2011, ID No: 012112022, United International University

5.  LTE – Introduction  LTE Overview  LTE – key facts  LTE – background  LTE specification overview  3GPP LTE technologies OFDM MIMO LTE- SAE Atchitecture FDD and TDD  LTE Performance  LTE Terminals  Scenarios  SUMMARY Table of Contents M.Sc. Engr.(CSE), Summer 2011, ID No: 012112022, United International University

6. As Internet generation accustomed to access broadband wherever they go, mobile broadband, instead of only at home and in the office, has become a reality. Therefore, the Global System for Mobile Communications family constantly develops new mobile technologies to achieve better performance, such as higher speed, larger capacity and so forth. LTE is a step beyond 3G and towards the 4G, evolved after EDGE, UMTS, HSPA and HSPA Evolution. The contributions of LTE make sure that the users are able to request more mobile applications like interactive TV, mobile video blogging, advanced games or professional services. Introduction M.Sc. Engr.(CSE), Summer 2011, ID No: 012112022, United International University

7.  Long Term Evolution (LTE) is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) which was introduced in 3rd Generation Partnership Project (3GPP) Release 8, operating under a name trademarked by one of the associations within the partnership, the European Telecommunications Standards Institute.UMTS3GPPEuropean Telecommunications Standards Institute  Long Term Evolution (LTE) is  wireless network technology based on OFDM, MIMO, multiple antenna techniques and all- IP technologies.  It provides much higher data rates (over 100 Mbps) to users while reducing cost-per-bit for wireless service providers.  In addition to LTE, the 3GPP and 3GPP2 is also defining an IP-based, flat network SAE architecture. The architecture is based on an evolution of the existing GSM/WCDMA core network, with simplified operations and smooth, cost-efficient deployment. LTE Overview M.Sc. Engr.(CSE), Summer 2011, ID No: 012112022, United International University

8. LTE – Key Facts Broadband subscriptions are expected to reach 3.4 billion by 2014 and about 80 percent of these consumers will use mobile broadband (see Figure 1 & Figure 2). and the majority will be served by HSPA and LTE networks. User-generated content is particularly interesting, because it changes traffic patterns, making the ability to uplink more important than ever. The high peak rates and short latency of LTE also enable real-time applications such as gaming, interactive TV, mobile video blogging, professional services and video-conferencing. Meet Consumer Requirements: M.Sc. Engr.(CSE), Summer 2011, ID No: 012112022, United International University

9. Meet Operator Requirements: Studies of Western Europe show extremely higher data volumes in 2020, which are illustrated in Figure. LTE – Key Facts  “Mobile technology has shown us the power and potential of always-on, everyplace network connectivity and new business models with new opportunities ”  Providing the powerful foundation of networking technologies is the GSM family – EDGE, HSPA and, in the near future, LTE – which are leading innovations and leading innovations and realization of global mobile broadband.  To be realized, the NGMN's vision of technology evolution beyond 3G requires meet the 3GPP original LTE requirements: new opportunities M.Sc. Engr.(CSE), Summer 2011, ID No: 012112022, United International University

10.  Increased peak data rates: 100Mbp downlink and 50Mbps uplink.  Reduction of RAN latency to 10ms.  Improved spectrum efficiency (two to four times compared with HSPA Release 6).  Cost-effective migration from Release 6 Universal  Terrestrial Radio Access (UTRA) radio interface and architecture.  Improved broadcasting.  IP-optimized (focus on services in the packet- switched domain).  Scalable bandwidth of 20MHz, 15MHz, 10MHz, 5MHz, 3MHz and 1.4MHz.  Support for both paired and unpaired spectrum.  Support for inter-working with existing 3G systems and non-3GPP specified systems. Summary of the 3GPP original LTE requirements M.Sc. Engr.(CSE), Summer 2011, ID No: 012112022, United International University

11.  The starting point for LTE standardization was the 3GPP RAN Evolution Workshop, held in November 2004 in Toronto, Canada.  LTE performance has been evaluated and the results were agreed on in a 3GPP meeting in South Korea in mid-2007.  The specification work on LTE was completed in March 2009 as the SAE specifications were included and will guarantee backwards compatibility. LTE Background M.Sc. Engr.(CSE), Summer 2011, ID No: 012112022, United International University

12. ParameterDetails Peak downlink speed 64QAM (Mbps)100 (SISO), 172 (2x2 MIMO), 326 (4x4 MIMO) Peak uplink speeds (Mbps)50 (QPSK), 57 (16QAM), 86 (64QAM) Data typeAll packet switched data (voice and data). No circuit switched. Channel bandwidths(MHz)1.4, 3, 5, 10, 15, 20 Duplex schemesFDD and TDD Mobility0 - 15 km/h (optimized), 15 - 120 km/h (high performance) LatencyIdle to active less than 100ms Small packets ~10 ms Spectral efficiencyDownlink: 3 - 4 times Rel 6 HSDPA Uplink: 2 -3 x Rel 6 HSUPA Access schemesOFDMA (Downlink) SC-FDMA (Uplink) Modulation types supportedQPSK, 16QAM, 64QAM (Uplink and downlink) LTE Specification M.Sc. Engr.(CSE), Summer 2011, ID No: 012112022, United International University

13.  LTE has introduced a number of new technologies when compared to the previous cellular systems. They enable LTE to be able to operate more efficiently with respect to the use of spectrum, and also to provide the much higher data rates that are being required.  OFDM (Orthogonal Frequency Division Multiplex).  MIMO (Multiple Input Multiple Output).  SAE (System Architecture Evolution).  FDD and TDD. 3GPP LTE Technologies M.Sc. Engr.(CSE), Summer 2011, ID No: 012112022, United International University

14. OFDM technology enables high data bandwidths to be transmitted efficiently with reflections and interference. The access schemes differ between the uplink and downlink:  OFDMA (Orthogonal Frequency Division Multiple Access is used in the downlink  SC-FDMA (Single Carrier - Frequency Division Multiple Access) is used in the uplink Figure 6 shows the LTE downlink physical resource based on OFDM. OFDM M.Sc. Engr.(CSE), Summer 2011, ID No: 012112022, United International University

15. By using multiple antennas at the transmitter and receiver along with some complex digital signal processing, MIMO technology enables the system to set up multiple data streams on the same channel, thereby increasing the data capacity of a channel. For example, high peak data rates can be achieved with multi-layer antenna solutions such as 2x2 or 4x4 multiple input, multiple output (MIMO), and extended coverage can be achieved with beam-forming. Figure 7 shows the MIMO principles with 2x2 antennas at the base station. MIMO M.Sc. Engr.(CSE), Summer 2011, ID No: 012112022, United International University

16.  To enable the improved performance to be achieved  Latency times can be reduced  Data can be routed more directly to its destination  CDMA operators will be able to evolve their networks to LTE–SAE LTE-SAE Architecture M.Sc. Engr.(CSE), Summer 2011, ID No: 012112022, United International University

17. FDD and TDD  Frequency bands for frequency division duplexing (FDD) and time division duplexing (TDD) LTE can be used in both paired (FDD) and unpaired (TDD) spectrum with duplex schemes.  In general, FDD is more efficient and represents higher device and infrastructure volumes, but TDD is a good complement, for example, in spectrum center gaps. M.Sc. Engr.(CSE), Summer 2011, ID No: 012112022, United International University

18. 3GPP bands for LTE FDD & TDD

19. Driving forces for LTE/SAE M.Sc. Engr.(CSE), Summer 2011, ID No: 012112022, United International University Performance  Higher peak rates  Higher bandwidth  Low delay/latency ƒ Cost efficiency  Low cost per bit  Low OPEX & CAPEX  Simpler operation  Cost-effective migration ƒ Spectrum flexibility  New and existing bands  Flexible bandwidth  Duplex flexibility: FDD and TDD High data rates  Downlink: >100 Mbps  Uplink: >50 Mbps  Cell-edge data rates 2-3 x HSPA Rel. 6 ƒ Low delay/latency  User plane RTT: <10 ms  Channel set-up: <100 ms ƒ High spectral efficiency Targeting 3 x HSPA Rel. 6 ƒ High Performance Broadcast services ƒCost-effective migration

20. Terminals Figure 10: Examples of devices that could use LTE M.Sc. Engr.(CSE), Summer 2011, ID No: 012112022, United International University

21. Scenario : Rollout of a full service LTE network over a legacy GSM/UMTS/HSPA network with voice support remaining on the legacy network. In this scenario, the operator intends to roll out LTE as a full voice and data service offering. Scenario M.Sc. Engr.(CSE), Summer 2011, ID No: 012112022, United International University

22. Whatever the name – next generation LTE, LTE-Advanced or LTE Rel-10 – the next step in LTE evolution allows operators to introduce new technologies without putting existing investments at risk for the power and potential of always-on, everyplace network connectivity M.Sc. Engr.(CSE), Summer 2011, ID No: 012112022, United International University

23. Question ? M.Sc. Engr.(CSE), Summer 2011, ID No: 012112022, United International University

24. Thank You. M.Sc. Engr.(CSE), Summer 2011, ID No: 012112022, United International University