1 Mobile Services Cellular networks Spectrum The structure of the industry Second & third generation networks Handhelds M-Commerce

2 Pre-cellular Mobile Service

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4 Cellular’s Additional Capacity

5 Spectrum What is it? Wavelength Allocation –Licensed –Unlicensed Harmonization

6 Connections Between Mobile & Landline Networks

7 2nd Generation Wireless Services

8 SS7 & Registers - Tracking Users

9 Third Generation Cellular WCDMA –GSM & TDMA –Evolution via: GPRS (General Packet radio services) EDGE (Enhanced data rates for GSM) HSDPA (High speed uplink packet access) CDMA2000 –1x –1xEV-DO –Rev A

10 U.S. Carriers GSM evolving to WCDMA –Cingular Wireless –T-Mobile CDMA2000 1X & EV- DO –Verizon Wireless –Sprint Nextel iDEN Trialing WiMAX

11 Third generation network architecture - 3GPP for WCDMA

12 Nextel’s Nationwide Push-to-talk Service

13 What Issues are Carriers Facing? $$$ Roaming Capacity Billing New Applications

14 What do Customers Want? Voice –Quality –Pricing –Coverage Features Data Video

15 Third Generation Economics  New Handsets  Denser base station coverage  $$$ for licenses  Will companies pay for high-speed data?  Will consumers?

16 Figure 8.6 Kodiak push-to-talk between cellular networks. Figure courtesy of Kodiak Networks.

17 Handhelds Triple mode –WCDMA –GSM –GPRS Multi-band –800 megahertz (MHz) –1.8 gigahertz (GHz)

18 Handheld Capabilities Ring tones Cameras Video & games Battery life Differentiators Subsidies

19 Advanced Applications & M- commerce Pay by phone Multi-media Internet access Remote Access to Enterprise applications Challenges –Spam –Security

20 Mobile Services Summary The Significance of cellular service Differences between 2nd & 3rd Generation Service Impact of governments’ spectrum policies Handhelds & user experiences