زمينه هاي رشد شبكه موبايل نسل چهار (4G/LTE) در كشور علی فتوت احمدی، بابک خلج ، حسین جلیلی، سیاوش کنعانیان، فواد اروانی ، الیاس سلیمان دانشگاه صنعتی شریف چهارشنبه 23 مرداد 1392 سومين کنفرانس تخصصی فناوری های نوين ارتباطی LCTC 2013 تحقیقاتی کاوشکام آسیا 23 مرداد rd LCTC 2013

Wireless Standards Complexity ANY WHERE ANY DEVICE ANY TIME ANY NETWORK Broadcast WMAN Cellular WLAN WPAN SEAMLESS CONNECTIVITY Navigation GSM GPRS EDGE UMTS HSDPA HSUPA 3.9G 4G Cellular d e WMAN b g a n WLAN UWB RFID Bluetooth ® WPAN DVB-H ISDB-T DMB Broadcast DTV A-GPS Galileo Navigation FM HD DAB Broadcast Radio Without open wireless architecture, the wireless industry will be totally messed-up

تحقیقاتی کاوشکام آسیا 23 مرداد rd LCTC 2013

Cellular Generations 1G, 2G, 3G, 4G GenerationDefinitionThroughputTechnologies 1GAnalog14.4 kbps (peak) AMPS,NMT,TACS 2G Digital (Narrow band Circuit Data) 9.6/14.4 kbps (peak) TDMA, GSM, CDMA 2G Transitional Packet Data 114/236.8 kbps (peak) kbps HSCSD, GPRS, EDGE 3G Digital broadband packet data 3.1 mbps (peak) kbps UTMS, CDMA2000 1XRTT 3G Transitional >2mbps 3.6/7.2/14.4 mbps (peak) 1-3 mbps HSPA, CDMA2000 EV-DO 4G Digital broadband packet based All IP (VOIP) 100 – 300 mbps (peak) 3-12 mbps LTE Advanced WiMax Advanced HSPA+ تحقیقاتی کاوشکام آسیا 23 مرداد rd LCTC 2013

Wireless World Map SystemApplicationDistanceMobilityData rate ZigBeeIndustrialShortLowLow (< 1 Mbps) BluetoothPC, Cell phoneShortLow Medium (  1 Mbps) UWBHome appliancesShortLowHigh ( > 50 Mbps) WiFiPC networkMediumLowHigh (> 100 Mbps) WiMAX fixedInternet ServiceLongLowMedium 2/2.5 G Cellular Voice + low rate data LongMediumLow 3/3.5G CellularVoice + InternetLongHighMedium 4G Cellular WiMAX & LTE Voice + ??LongHigh 4G AdvancedVoice + ?? + ??LongHighVery high ( > 200 Mbps) تحقیقاتی کاوشکام آسیا 23 مرداد rd LCTC 2013

LTE Evolution 2013/ /2010 GSM/ GPRS EDGE, 200 kHz DL: 473 kbps UL: 473 kbps EDGEevo DL: 1.9 Mbps UL: 947 kbps HSDPA, 5 MHz DL: 14.4 Mbps UL: 2.0 Mbps HSPA, 5 MHz DL: 14.4 Mbps UL: 5.76 Mbps HSPA+, R7 DL: 28.0 Mbps UL: 11.5 Mbps 2005/ / /2012 HSPA+, R8 DL: 42.0 Mbps UL: 11.5 Mbps cdma xEV-DO, Rev MHz DL: 2.4 Mbps UL: 153 kbps 1xEV-DO, Rev. A 1.25 MHz DL: 3.1 Mbps UL: 1.8 Mbps 1xEV-DO, Rev. B 5.0 MHz DL: 14.7 Mbps UL: 4.9 Mbps HSPA+, R9 DL: 84 Mbps UL: 23 Mbps DO-Advanced DL: 32 Mbps and beyond UL: 12.4 Mbps and beyond LTE-Advanced R10 DL: 1 Gbps (low mobility) UL: 500 Mbps Fixed WiMAX scalable bandwidth 1.25 … 28 MHz typical up to 15 Mbps Mobile WiMAX, e Up to 20 MHz DL: 75 Mbps (2x2) UL: 28 Mbps (1x2) Advanced Mobile WiMAX, m DL: up to 1 Gbps (low mobility) UL: up to 100 Mbps VAMOS Double Speech Capacity HSPA+, R10 DL: 84 Mbps UL: 23 Mbps LTE (4x4), R8+R9, 20MHz DL: 300 Mbps UL: 75 Mbps UMTS DL: 2.0 Mbps UL: 2.0 Mbps تحقیقاتی کاوشکام آسیا 23 مرداد rd LCTC 2013

و بالاخره همگرائی استاندارد ها پس از سالها تحقیقاتی کاوشکام آسیا 23 مرداد rd LCTC 2013

What is 4G? 4th Generation of Mobile communications –First Gen Analog, AMPS –2G, Digital, IncreaseVoice Capacity- TDMA, GSM & 1xRTT –3G High Speed Data; EVDO, UMTS, HSPA ITU defines 4G as 100 Mbps mobile, 1 Gbps stationary –LTE-Advanced & WiMax 2.0 4G certified, theoretically capable –Realistic? Nokia lab demo w/ 8 antennas, 60 MHz & 1 user Market 4G defined as ~10X 3G or Mbps Current gen WiMax, LTE & HSPA+ تحقیقاتی کاوشکام آسیا 23 مرداد rd LCTC 2013

LTE Releases تحقیقاتی کاوشکام آسیا 23 مرداد rd LCTC 2013

4G Technical Requirements Increase data rate (100 Mbps downlink / 50 Mbps uplink) Improve wireless performance (Better reception and coverage) Increase spectrum efficiency (More subscribers and more data) High flexibility of allocation (Quick adjust of data rate) Spectrum flexibility (Several bandwidths can be used) Optimized for low speed ( Best at < 20 km/hr & support up to 350 km/hr) Add Multi-Cast and Broadcast Services (Broadcast services like TV) Faster call setup تحقیقاتی کاوشکام آسیا 23 مرداد rd LCTC 2013

WiMAX vs LTE Parameters ParameterWiMAXLTE Duplex methodTDDFDD and TDD Bandwidth5 and 10 MHz1.25, 3, 5, 10, 15 & 20 MHz Frame size5 ms10 ms with 10 sub-frames Multiplex Access DLOFDMA Multiplex Access ULOFDMASC-FDMA Scheduling speedEvery frame (5 ms)Every sub-frame (1 ms) Subcarrier spacing10.9 kHz15 kHz Maximum DL Data rate (SISO) 46 Mbps (10 MHz band)50 Mbps (10 MHz band) ModulationQPSK, 16QAM, 64 QAM Coding for user dataConvolution or TurboTurbo Diversity MIMO up to 2x2 TD & SM MIMO up to 4x4 TD & SM تحقیقاتی کاوشکام آسیا 23 مرداد rd LCTC 2013

LTE freq. bands (FDD/TDD) E ‑ UTRA Operating Band Uplink (UL) operating bandDownlink (DL) operating band F UL_low – F UL_high [MHz]F DL_low – F DL_high [MHz] 11920– – – – – – – – –849869– –840875– – – –915925– – – – – – – –716728– –787746– –798758– –716734– –830860– –845875– E ‑ UTRA Operating Band Uplink (UL) operating bandDownlink (DL) operating band F UL_low – F UL_high [MHz]F DL_low – F DL_high [MHz] – – – – – – – – – – – – – – – –2400 تحقیقاتی کاوشکام آسیا 23 مرداد rd LCTC 2013

LTE bands cont. تحقیقاتی کاوشکام آسیا 23 مرداد rd LCTC 2013

LTE Spectrum DownlinkUplink OFDMASC-FDMA تحقیقاتی کاوشکام آسیا 23 مرداد rd LCTC 2013