Wireless & Mobile Network Technology Overview Iain Gillott (512)

Source: iGillottResearch Inc, 2008 Insight and analysis for the changing wireless world Worldwide Cellular Subscribers by Technology, GSM family 71.1% CDMA % UMTS/HSPA/EV-DO 19.4% GSM family 80.8% CDMA % UMTS/HSPA/EV-DO 40.2%

Source: iGillottResearch Inc, 2008 Insight and analysis for the changing wireless world North American Subscribers by Technology, Children aged under 10 Seniors Market is clearly maturing

Source: iGillottResearch Inc, 2008 Insight and analysis for the changing wireless world Technology Evolution 2G 2.5G 3G CDMA2000 4G? GSM Voice TDMA CDMA Voice CDMA TDMA Voice TDMA GPRS Data TDMA EDGE Voice & Data TDMA CDMA IS-95B Voice & Data CDMA 1xRTT Voice & Data CDMA EV/DO Data CDMA EV-DO Rev. C/ UMB Voice & Data OFDMA WCDMA/ UMTS Voice & Data CDMA EV-DO Rev. B Data CDMA HSDPA Data CDMA HSUPA Data CDMA HSPA+ Data CDMA LTE Voice & Data OFDMA WiMAX Data OFDMA iDEN Voice TDMA EV-DO Rev. A Data CDMA

Source: iGillottResearch Inc, 2008 Insight and analysis for the changing wireless world HSPA/LTE Peak Throughput Evolution DL R’99-384k HSDPA 1.8M HSDPA 3.6M HSDPA 7.2M HSDPA 14.4M MIMO 2x2 28M MIMO/64QAM 41M LTE(10MHz) 140M LTE(20MHz) 300M 100 kbps 1 Mbps 10 Mbps 100 Mbps 100 kbps 1 Mbps 10 Mbps 100 Mbps UL R’99 384k HSUPA 1.5M HSUPA 5.6M HSUPA/16QAM 11M LTE (10MHz) 25M LTE (10MHz) 50M HSPA DL & UL Peak Throughputs expected to double every year on average Limitations not induced by the Technology itself but time frames required to upgrade infrastructure and transport networks, obtain devices with corresponding capabilities and IOT tests HSPA DL & UL Peak Throughputs expected to double every year on average Limitations not induced by the Technology itself but time frames required to upgrade infrastructure and transport networks, obtain devices with corresponding capabilities and IOT tests Source: 3G Americas, 2007

Source: iGillottResearch Inc, 2008 Insight and analysis for the changing wireless world CDMA2000 Evolution Path CDMA CDMA/TDM OFDM 1– Voice capacity for single 1.25MHz carrier. Range reflects the mix of devices being single rx and dual rx capable. Numbers are preliminary and subject to change. 2–Lower range corresponds to 3x Rev A carriers using 16QAM (CSM6800). Upper range corresponds to 3x Rev B carriers using 64-QAM (CSM6850). Peak rates scalable with number of carriers. Initial MSM implementation supports 3x. Standard supports up to 15 carriers. 3– Peak rates highlights introduction of DL 64-QAM+MIMO (~8.6 Mbps DL peak per carrier) and UL 16-QAM (3.1 Mbps UL peak per carrier). Peak rates scalable with number of carriers. Quote is for 4 EV-DO carriers, reflecting possible initial implementation. Standard to support up to 15 carriers. DL: 2.4 Mbps peak UL: 153 kbps peak –All-IP Services –Broadband downloads –CDMA Multicast DL: 9.3 – 14.7 Mbps peak 2 UL: 5.4 Mbps peak (3x) DL: 3.1 Mbps peak UL: 1.8 Mbps peak –Broadband uploads –Low Latency –Advanced QoS –VoIP, PTT and VT –OFDM Multicast (SFN) –Multi-Carrier Rev A –Lower delays and higher data rates –Software Upgrade EV-DO REV B EV-DO REV A EV-DO REL 0 EV-DO Advanced –2x2 MIMO –Latency Enhancements –Femtocell enhancements DL: 34.4 Mbps peak 3 UL: 12.4 Mbps peak 3 80 – 120 calls per sector 1 1x Avanced –RL IC –Advanced QLIC –Early termination CDMA2000 1X –EVRC-B –FL QLIC –RX Diversity Voice capacity increase: 35 to 55 calls per sector Source: CDG, 2007

Source: iGillottResearch Inc, 2008 Insight and analysis for the changing wireless world WiMAX Fixed d and Designed to support data rates of up to 40 Mbps per channel Each base station covering a radius of 3 to 10 km (real- world performance varies) Designed for apps where CPE is stationary Mobile Fixed, nomadic, portable and mobile capabilities e m

Source: iGillottResearch Inc, 2008 Insight and analysis for the changing wireless world e e Ratified by the IEEE in December 2005 Supports data rates of up to 15 Mbps and coverage areas of about 3 km Smaller coverage area means network must have higher density of base stations than fixed Mobile WiMAX air interface adopts OFDMA IMT-2000 As of October 2007, e mobile WiMAX was included in IMT-2000 standards: OFDMA, FDMA, TDMA and CDMA Eligible for deployment in the 3G spectrum, which classifies it irrevocably as a 3G technology WiBro Wireless Broadband is a South Korean version of the e standard found only within the country

Source: iGillottResearch Inc, 2008 Insight and analysis for the changing wireless world m Commonly accepted as the basis for the evolution of mobile technology toward 4G Expected to be backward compatible with other standards Expected to be completed by the end of 2009 Includes MIMO Likely be capable of pushing data transfer speeds up to 1 Gbps Scalable bandwidth, including 5 MHz, 7 MHz, 8.75 MHz and 10 MHz, a requirement

Source: iGillottResearch Inc, 2008 Insight and analysis for the changing wireless world WiMAX Architecture R3R4R6R1 HA AAADCP Billing PF CSN ASN-GW ASN

Source: iGillottResearch Inc, 2008 Insight and analysis for the changing wireless world What this means in practical terms Leap, Metro PCS have an upgrade path for more voice capacity VZW and AT&T can upgrades for voice and data Sprint-Clearwire has support for WiMAX Underlying technologies are the same Implementation is different Every network requires development and tuning GM-Ford Networks are getting far more complex More expensive to maintain Implications on care Far higher capabilities All networks require Backhaul Billing Subscriber management Content

Source: iGillottResearch Inc, 2008 Insight and analysis for the changing wireless world Winners & Losers Winners AT&T, Verizon Wireless The big keep getting bigger Common LTE evolution path Qualcomm Fingers in all of the pies Will buy WiMAX capability Nokia Handsets, software, infrastructure capability ZTE, Huawei Driving cost of infrastructure down Intel WiMAX is real Question is scale and timing Losers Nokia Siemens, Nortel, Motorola, Ericsson, Alcatel-Lucent Chinese eating their margins Mergers likely Need to leverage apps, services and handsets