RF Deployment Strategies for MMDS Dale Dalesio; Product Manager ADC The Broadband Company

1. RF Deployment Strategies for MMDSDale Dalesio; Product ManagerADC The Broadband Company

2. Agenda • Super-Cells • Multi-Cells

3. Super-Cell • Enables fastest market entry • Lowest cost • Backhaul component small • Broad coverage • Low to medium capacity • Limited ability to target coverage and service set offering A,B A B B A C A B B C A B A A C A B A B B B B A A C B A A B Super-Cell Architecture Downstream Upstream • 10 to 25 miles radius

4. Super-Cell D/S RF Requirements RF Downstream • Typical coverage; 10 - 30 Miles • Usually tall broadcast towers; 300 - 800 feet • Integrated with existing video service • Mostly single sector D/S • Higher output power per channel • Typical transmitters are 50W or 100W Channel • One transmitter per RF channel • Waveguide combining technique Downstream Frequencies MMDS 2500 - 2686MHz

5. Super-Cell U/S RF Requirements RF Upstream • Typical coverage; 10 - 30 Miles • Usually tall broadcast towers; 300 - 800 feet • Use of tower-top LNAs (low noise amplifier) to overcome RF coaxial loss • One per each sector • Sectorized on the Upstream • 4 sectors; 90º antennas • 8 sectors; 45º antennas • Frequency re-use Upstream Frequencies MDS1 MDS2A MDS2 WCS Limited MMDS

6. Super-cell Base Station RF

7. Super-Cell RF Facilities Requirements • Usually housed in a building or transmission shelter • Larger space required if integrated with existing video service

8. A1 A1 A2 A2 A3 A3 A4 A4 C1 C1 C2 C2 C3 C3 C4 C4 G1 E1 G1 G2 G2 E2 G3 G3 E3 G4 E4 G4 M1 WCS low B1 B2 B3 D1 D2 D3 F1 F2 F3 H1 H2 H3 B4 D4 F4 M2 WCS high 2150 - 2162 or 2170-2182 MHz 2305 - 2320 and 2345-2360 MHz E1 E2 E3 E4 2500 - 2686 MHz B1 B2 B3 D1 D2 D3 F1 F2 F3 H1 H2 H3 B4 D4 F4 2500 - 2686 MHz MMDS Spectrum Requirements MDS U/S MMDS U/S

9. * * * * * * * * * * * * * * * * * * • 1. Initial Super-cell • Gain quick market entry * • 2. Multi-cell Overlay • New frequencies • Capacity/coverage “hot spot” fill * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 3. Complete Migration Mix Cell Sizes to Maximize Flexibility STRATEGY: Enter market with super-cell, add mini-cells over time, may result in complete migration in some markets

10. Multi-Cell Strategy • Incrementally add targeted capacity, or market entry in high-density areas • Use of buildings, broadcast, and wireless tower sites • Medium coverage • Medium to high capacity • Relatively fast to deploy C D D C B A D D C C A A B B A B C C D D B B A A Multi-Cell Architecture • 3 - 7 miles radius • Multiple modulations address intra- and inter-cellular interference Upstream & Downstream

11. What’s needed for Multi-Cell RF Systems • Reduce capital cost of RF • Scaleable Multi-sector cell support • Use the bandwidth • Smaller size for hub equipment • Quick and efficient hub deployments • Less customization; standard repeatable hub configurations • Improved efficiency • Very low maintenance and downtime

12. Axity Multi-cell Base Transceiver Station

13. Axity BTS Axity BTS D/S (IF to RF) & U/S (RF to IF) • Broadband Design; supports single channel or multi-channel signals. • Modulation independent • supports QPSK, 16QAM; 64QAM; OFDM • Each chassis supports up to 4 sectors with redundancy; additional sectors supported with optional configurations • Independently scalable upstream or downstream configurations

14. Integrated BTS • Complete modular integration • Downstream components • RF transmission; MMDS upconversion, amplifier, output filter • Upstream components • RF reception; LNA, MMDS receive and down-conversion • Other network equipment • Frequency reference standard; GPS; ABS controller; Input and output switch matrices

15. Axity Deployment Configurations • Co-locate with access equipment • Indoor or outdoor configurations • RF remotely located from access equipment • Ideal for RF roof-top installations with access equipment

16. TX & RX Antennas PSTN Wireless Hub VoIP G’way Axity RF BTS Private IP B/W Manager Internet Wireless Modem Termination System (WMTS) BTS ConfigurationsRF Co-located

17. BTS ConfigurationsRF located remotely Axity RF BTS TX & RX Antennas • RF remotely located from access equipment • If multiplexed and transported to RF BTS PSTN Wireless Hub VoIP G’way IF Transport Private IP B/W Manager Internet Wireless Modem Termination System (WMTS)

18. Axity Multi-cell Base Transceiver Station Axity BTS Available now • N+1 Redundancy; downstream and upstream • 10W average per sector - multi-carrier • 25W average per sector - single carrier • SNMP interface • Internal 10MHz reference and GPS • Indoor or outdoor configurations • Hot swappable and replaceable modules Frequencies Supported MMDS D/S MDS U/S

19. RF BTS; What is Coming Axity BTS Mid 2001 • 20W average - multi-carrier • 50W average - single carrier • Programmable downstream output power in eight 2dB steps • Programmable upstream gain of downconverter in eight 2dB steps • -48V configuration w/integrated battery backup • Single CAM replaces individual Control boards • Enhanced monitoring, control and status Frequencies Supported D/S MMDS U/S MDS, WCS, MMDS

20. Redundancy IFInput RF Output MMDS RF Output D/S RF Transfer Switches D/S Sector O/P Filter Status/Control Automatic Backup Controller Control/Status Downstream RF Control Comm D/S Input IF Switch Auxiliary Sector IFInput RF Output

21. Multi-Cell vs. Super-Cell Axity BTS Reduces: Size by 50% Power Consumption by 40%

22. Multi-cell Base Transceiver Station Multi-cell architecture can: • Reduce capital RF hub costs by 50% • Reduce space requirements by 50% • Reduce Power Consumption by 40% Increase capacity through more efficient use of the MMDS bandwidth.