1. Hughes AB9400 Advantages For 2/3G Cellular Transmission December 2005

2. 2 BCN-0505 AB9400 Product Overview

3. 3 BCN-0505 AB9400: Point-to-Point and PMP on One Radio Platform  Point-to-Point and PMP use the same equipment and are managed by the same EMS  All Hughes advantages apply: –Frequency reuse, even adjacent channels –Frequency changes on-the-fly –Mix of traffic E1, ATM, IP  Key benefits: leverage common training, sparing, network management, etc.

4. 4 BCN-0505 Key Features  Low startup investment with single sector HT  Linear expansion: match investment with revenue  Low operational costs: automatic installation, etc  Highest efficiency with 16-QAM  Flexible architecture: ATM, TDM and IP transport with QoS (Flexible bandwidth control)  Optimized for cellular backhaul  IP/LAN for SMEs  Long Range: 5.7km for 99.99% Rain zone K  Carrier grade EMS (Sun-Unix)  Bottom line: lowest CapEx, lowest OpEx

5. 5 BCN-0505 Hub S1 Low speed (QPSK) bursts Longer range High speed (QAM) bursts S2 Close in customers High Spectral Efficiency with Multi-Modulation  Higher capacity using 16-QAM: 30 Mbps –3.2 bps/Hz (2.4 bps/Hz payload)  Higher range and availability using QPSK: 15 Mbps –1.6 bps/Hz (1.2 bps/Hz payload)  Hub radio supports remotes using both modes (slot by slot), optimizing system capacity and range

6. 6 BCN-0505 A B C D E F G AAFCD GGEG TDMA Bursts 16-QAMQPSK Hughes’ Patented Multi-Modulation Optimizes Range and Capacity AB9400 Hub/Base Station Supports Terminals with 16QAM and QPSK Simultaneously on a site-by-site basis DBA The HT is the controller of the DBA algorithm. The HT assigns timeslots based on demand and priority as defined by the QoS parameters on a per VP/VC basis. Each RT can receive up to the full air bandwidth. Hub

7. 7 BCN-0505 AB9400 26/28 GHz Channel Plans

8. 8 BCN-0505 Hughes AB9400 Advantages  TDMA architecture is more economical than FDMA, lower capex and opex –AB9400 “first-link cost” [initial base station and one remote terminal] is similar to point-to-point microwave price –AB9400 Base Station has ATM, NxE1, + 100BaseT interfaces, permitting migration of traffic from E1 to ATM to IP with no hardware swapout  Higher Remote Terminal capacity –Some FDMA products limited to 8 Mbps/4xE1 –AB9400 Remote Terminal supports 4-12 E1s, up to 29 Mbps ATM throughput, 20-30 Mbps IP throughput  AB9400 TDMA system allows dynamic bandwidth allocation (DBA) among multiple Remote Terminals –DBA is vital for concentrating backhaul traffic from HSDPA/UMTS cell sites, allows oversubscription of 3G data carriers, reduces transmission costs at cell sites and upstream –FDMA systems cannot share bandwidth among remote terminals  AB9400 has more robust ATM and IP services & features

9. 9 BCN-0505 4-Sector Hub for 24 Remotes FDMA Base Station TDMA Base Station: Lower Capex & Opex 24 FDMA Modems 4 TDMA Radios (120 Mbps Capacity with 4 Radios in 1/3 Rack FDMA Hub/Base Station: Multiple module types & multiple modules per radio Requires additional modem for each Remote Terminal Requires site visit to add/configure modem for incremental Remote Terminal Range decreases as Remotes are added to multi- carrier transmitter Hub/Base Station Costs TDMA Hub/Base Station: Only one module (circuit pack) per radio Each radio supports >16 Remote Terminals No hub site visit required for incremental Remote Number of remotes does not affect range with single-carrier TDMA

10. 10 BCN-0505 AB9400 Superior Redundancy HT IDU RT IDU 12xE1  Protection available for ATM, IP, and E1 interfaces at hub/base stations and remotes  Hub radios can be 1:0, 1:1, or 1:N redundant  Remote radios can be 1:0 or 1:1 protected

11. 11 BCN-0505 TDMA Enables Active Redundancy for Hub/Base Stations  Backup hub radio transmits test burst in maintenance time slot –Remote Terminals report signal strength of primary and backup radios –Alarm generated for backup unit failure or degradation  Continuous “Active Redundancy Testing” avoids switchover to failed backup units, reduces system outages  FDMA systems not capable of active redundancy

12. 12 BCN-0505 2/3G Capacity Requirements Source: GSM Mobile Transmission Conference Presentations April 2005  Cell site with 2G+3G will require 5-10 E1s –AB9400 Remote Terminal equipped with 4, 8, or 12 E1s –About 40 percent of Hughes PMP deployments for cellular operators are 8xE1 or 12xE1 RTs today –Some PMP suppliers offer maximum 4 E1s, not sufficient for large cells or 2+3G cells

13. 13 BCN-0505 9400 Hub Terminal High Performance and High Functionality  Outstanding operational performance –TDMA Multi-Mode Modulation: QPSK and 16 QAM 30 Mbps payload (2 bit/Hz)  Physical interfaces –a) STM-1/OC3c ATM –b) 12xE1 TDM + 100BaseT –c) 100BaseT only  Frequency Bands –ETSI 26 GHz –ETSI 28GHz  Scalable –Single sector (one HT) –Large Hub  Frequency change ‘on the fly’

14. 14 BCN-0505 Azimuth angle (deg) 180-180 0 0 dB -10 High-performance sector antenna at the hub increases capacity. Typical horn antenna AB9000 Antenna Wasted capacity Spectrum Efficiency

15. 15 BCN-0505 9400 Remote Terminal High Performance and High Functionality  Outstanding operational performance –TDMA Multi-Mode Modulation: QPSK, and 16 QAM Up to 30 Mbps user payload in 14 MHz  Physical interfaces –NxE1 + 2x10/100BaseT –N=2,4,8 –E1s are TDM or ATM/IMA –STM-1 ATM  QuickVisit TM Installation –Single coax IFL –300mm (half-depth)

16. 16 BCN-0505 PMP Range  Rain attenuation is the limiting factor for range Rain Zone K Nominal system parameters, 60cm antenna, 10-6 BER, 99.99% Availability, 26GHz 1km 3.9 km 6km 16-QAM QPSK Rain Zone K 3km 5.7 km 2km 4km 5km

17. 17 BCN-0505 PMP Range

18. 18 BCN-0505 AB9400 Advanced Features

19. 19 BCN-0505 PTP Link Unparalleled system flexibility Hub ODU Flexible Antenna Configurations 90 o,,180 o, 2x180 o, PTP 1 antenna, 2 antenna Flexible Antenna Configurations 90 o,,180 o, 2x180 o, PTP 1 antenna, 2 antenna Remote 90 o PMP Sector Splitter

20. 20 BCN-0505 Unparalleled system flexibility Hub ODU Splitter Remote Terminal 2x180 o with 1 channel 30Mbps ‘4-sector coverage’ with 1 radio 2x180 o with 1 channel 30Mbps ‘4-sector coverage’ with 1 radio

21. 21 BCN-0505 Unparalleled system flexibility Hub ODU Remote Terminal Coupler ODU Backup Hub Stackable Base Stations Redundancy, added capacity Flexible Antenna Configurations 1 Antenna with 2 ODUs Stackable Base Stations Redundancy, added capacity Flexible Antenna Configurations 1 Antenna with 2 ODUs

22. 22 BCN-0505 2G+3G Backhaul ATM NxE1 2G Core Backhaul G-25106 P 09/09/02 UMTS RNC PMP Hub UMTS NodeB AIReach RT NxE1 TDM ATM Air Interface with ATM QoS TDM: NxE1 ATM: E3 or STM-1 IP: 100BaseT BSC NxE1 ATM DS3 2G+ 3G over NxE1 TDM NxE1 TDM

23. 23 BCN-0505 Hub Site (ATM) 1 to 4 Sectors, 1+1 Redundant The Hub architecture is a scalable architecture. HT radios are added when additional capacity is required.

24. 24 BCN-0505 Hub Block Diagram Ethernet Switch Ethernet Hub The same HT supports all 3 modes at the same time IP Core Backhaul ATM Switch ATM HT ATM Core Backhaul TDM Switch 12xE1 TDM Core Backhaul

25. 25 BCN-0505 2G+3G Backhaul ATM NxE1 2G Core Backhaul G-25106 P 09/09/02 UMTS RNC PMP Hub UMTS NodeB AIReach RT NxE1 TDM ATM Air Interface with ATM QoS TDM: NxE1 ATM: E3 or STM-1 IP: 100BaseT BSC NxE1 ATM 2G+ 3G over NxE1 TDM E1 ATM/IMA 3G ATM Interface O&M UBR PVC Voice VBRrt PVC Data VBRnrt (future) 3G ATM Interface O&M UBR PVC Voice VBRrt PVC Data VBRnrt (future) 2G over NxE1 TDM 3G over ATM (E3/DS3 PDH or STM-1 SDH) ATM STM-1 ATM

26. 26 BCN-0505 Future All-IP Backhaul Ethernet Core Backhaul RNC PMP Hub 3G BTS AIReach RT NxT1 TDM Air Interface with QoS IP: 100BaseT Ethernet All IP

27. 27 BCN-0505 WiFi Application  Enables superior WiFi performance –Provides 50x the rate of 600kbps DSL –DBA allows bw sharing  WiFi Backhaul –Data is kept secure –Data is kept separate from other traffic Hot Spot 10/100 BaseT WiFi AP RT Backhaul Cellular backhaul and WiFi can be supported at the same time.

28. 28 BCN-0505 Terminal/RT Ethernet Interface: IP Performance 124 bytes 1,500 bytes 100kbps 7.8 Mbps 30 Mbps HUGHES IP Performance Full Duplex Typical PMP IP Performance 3 Mbps Vendor A Vendor B IP Packet Size Throughput Most vendors’ actual IP throughput is far less than claimed – very dependent on packet size! 20 Mbps

29. 29 BCN-0505 AB9400 Best-in-Class IP, QoS, and Prioritization  AB9400 HT supports >1,000 VCs, Remote Terminal supports >250 VCs  AB9400 supports all ATM QoS categories: CBR, VBR-rt, VBR-nrt, CBR, UBR, UBR+  AB9400 supports four levels of IP QoS [matching ATM categories]  IP packet priority can be based on DiffServ TOS or VLAN ID  AB9400 HT and RT provide VLAN tagging and untagging for 3G and other applications  AB9400 HT supports up to 64 VLAN IDs, RT up to 16  FDMA systems provide limited ATM support (typically CBR only, limited connections/VCs per LAN port, limited QoS levels per LAN port/VC, limited VLAN support

30. 30 BCN-0505 AB9400 with Up/Downlink VLAN Tagging Unique VLAN tagging feature for 3G TD/CDMA operator

31. 31 BCN-0505 3G Requires ATM Today FDD UMTS + HSDPA = ATM Transport NxE1 IMA E3 or STM-1 ATM Today’s 3G Node B requires ATM transport: –FDMA Base Station requires external mux to aggregate E1s with IMA onto E3 or STM-1 [extra capex & opex] –AB9400 Base Station/Hub multiplexes ATM traffic from multiple Remote Terminals onto E3 or STM-1 ATM channel –Some FDMA Remote Terminals limited to total throughput of 8 Mbps [4xE1 or 8 Mbps of LAN] –AB9400 Remote Terminal supports total throughput of 30 Mbps [4-12xE1, plus E3 or STM-1 ATM, plus 10/100BaseT]

32. 32 BCN-0505 Future 3G Cells Will Require IP TDD UMTS, Future HSDPA Overlay = IP Transport ATM 3G migrating to IP transport:  TDD UMTS today – T-Mobile Czech, Orange Slovakia, etc.  Future HSDPA overlay base stations  3G cells with 2-4 Mbps user traffic per sector, need 6-12 Mbps backhaul –FDMA Base Station requires expansion unit for IP traffic [extra cost] –Every AB9400 Base Station/Hub radio today supports 100BaseT interface for IP traffic –FDMA Remote Terminal limited to maximum 8 Mbps [insufficient capacity] –AB9400 Remote Terminal supports total throughput 20-30 Mbps IP traffic depending on packet size 10/100BaseT 100BaseT

33. 33 BCN-0505 Спасибо!