Cellular Phone and Data Standards Past, Present, and Future

1G Phone and Data Standards  Voice –AMPS - Advanced Mobile Phone System  Data –CDPD - Cellular Digital Packet Data –Mobitex –DataTac

AMPS - Advanced Mobile Phone System  Analog Network  Uses Frequency Division Multi-Access  800 MHz  Low security  CDPD for data  Verizon and Alltel still operate networks

CDPD - Cellular Digital Packet Data  Utilizes unused AMPS phone bandwidth  Up to 2.4 KB/s  No active networks

Mobitex  Data only  900 MHz  Max of 1 KB/s, Avg 500 Bytes/s  Two way pagers, wireless , Original Blackberry and PDAs

DataTac  Data only  800 Mhz  Up to 2.4 KB/s  Used in Two way pagers and Original Blackberry devices

2G Phone Standards 2G Phone Standards  D-AMPS – Digital AMPS  iDen – Integrated Digital Enhance Network  GSM – Global System for Mobile Communications  IS-95 or CDMA

Digital AMPS  Digital Network  Utilizes existing 800 MHz AMPS channels  Uses Time Division Multi-Access  3 Times the call capacity over AMPs  SMS and CSD (Data)

iDEN – Integrated Digital Enhanced Network  Digital Network  800 MHz  TDMA  SMS, Push to Talk, SIM cards, and WiDEN (Data)  Fastest PTT response time  Nextel operated network

GSM - Global System for Mobile Communications  Digital Network  850 MHz and 1900 MHz  TDMA  Most used standard today  SMS, SIM cards and later PTT  Data thru CSD, GPRS, EDGE  Cingular and T-Mobile operate networks

IS-95 CDMA  Digital  Uses Code Division Multi-Access  Not widely used in US  Father of CDMA2000

2G Data Standards  WiDEN - Wideband Integrated Dispatch Enhanced Network  CSD - Circuit Switched Data  HSCSD - High-Speed Circuit-Switched Data  GPRS - General Packet Radio Service  EDGE - Enhanced Data rates for GSM Evolution

WiDEN - Wideband Integrated Dispatch Enhanced Network  Operates over iDen  Communicate on up to 4 channels  Up to 12.5 KB/s on all 4 channels  Nextel operated network

CSD and HSCSD  Operates over GSM  CSD uses 1 time slot for 1 KB/s  HSCSD uses 4 time slots for 7 KB/s  Dedicated circuit when connected  Billed by time connected  T-Mobile and Cingular limited availability

GPRS - General Packet Radio Service  Utilizes unused GSM phone bandwidth  Up to 4 time slots  Speeds 3.75 KB/s – 10 KB/s  Shared connection with everyone in cell  Billed by amount of data moved  T-Mobile and Cingular

EDGE - Enhanced Data rates for GSM Evolution - EGPRS  Enhancement for GPRS  Theoretical max of 8 timeslots  Speed of 30 KB/s on 4 slots  T-Mobile and Cingular

3G Standards  Transfer Voice and Data Simultaneously  CDMA2000 –CDMA2000 1X –CDMA2000 1X EV-DO –CDMA2000 1X EV-DV  WCDMA – Wideband CDMA –UMTS

CDMA2000  Family of 3G standards –CDMA2000 1x –CDMA2000 3x (Not used) –CDMA2000 EV-DO –CDMA2000 EV-DV (Not used)  Uses CDMA  Each handset xmits unique code  Handsets share same frequencies

CDMA2000 1x  Most basic  Max speed of 18KB/s  Verizon, Sprint, and Alltel

CDMA2000 1x EV-DO Evolution Data Optimized  Evolution of CDMA2000 1x  Revision 0 currently deployed in US –Max D/L of 320 KB/s –Max U/L of 77 KB/s  Revision A –Max D/L of 396 KB/s –Max U/L of 230 KB/s  Verizon and Sprint limited markets

WCDMA – Wideband CDMA  CDMA Network  Spread Spectrum

UMTS - Universal Mobile Telecommunications System  Successor to GSM  Uses WCDMA for Air interface  Uses 850 MHz and 1900 MHz  HSDPA and HSUPA for Data  Cingular limited markets

HSDPA - High-Speed Downlink Packet Access  Part of UMTS  Speeds of 460 KB/s down and 230 KB/s up  Future plans for 920 KB/s speeds  Cingular in limited markets

HSUPA - High-Speed Uplink Packet Access  Offers great upload speeds  Max Upload speed of 740 KB/s  Cingular to do Field Testing by end of 2007