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Objectives

This chapter provides an overview of the functional areas and components of the Horizon II macro cabinet, including the digital modules, RF components, and power supplies. It also covers the expansion capabilities of the cabinet.

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Objectives

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  1. Objectives By the end of this chapter the student will be able to :- State the functional areas of the Horizon II macro cabinet. • Describe the functions and operation of the Horizon II macro Digital modules. • Describe the cabinet RF Components.

  2. Antenna RF interface to Antenna ( Transmit - Combining and filtering) (Receive – Amplification and filtering) • Three Main Functional areas: • Digital Cards • Radios (CTU2) • RF equipment CTU2 CTU2 CTU2 CTU2 CTU2 CTU2 Digital Cage == Controls the cabinet Alarms Power Supplies E1 Link Basic Block Diagram of Cabinet

  3. The Horizon II macro BTS hardware supports the following functionality: • Support of 6x double density CTU2 Single or Double carrier per Radio. • Horizon II Site Controller (HIISC) • Integrated NIU Integrated FMUX • E1 support Enhanced E1 Redundancy • Increased Capacity/removable flash media • Increased RSL functionality • Expansion of Horizon II macro cabinets to support 24 carriers per BTS site. Horizon II Expansion Multiplexer (XMUX) Site Input/Output (I/O) Panel • Interoperability with current M-Cell and HORIZON macro products

  4. HORIZON II macro Cabinet Front View Alarm Board Site Controller (HIISC) Circuit Breaker Card (CBC) Power Supply Units (PSU) CTU2 Cooling Fans

  5. SURF2 HORIZON II macro Cabinet Top View Site I/O Panel Power Supply Link Interface Board Tx Blocks EAS Alarm, PIX 0 & 1

  6. Cabinet Power Supply Maximum 4x PSU per cabinet – One for Redundancy Depends on the number of Radios fitted. The Cabinet can support the three types of power supply • +27V (negative earth) • -48V (positive earth) • Nominal 120/240V AC

  7. Horizon IImacro cabinet power supply requirements

  8. -48v Power Supply Units

  9. Power Supply Units All three unit types support the same PSU Alarms: • O/P over/under voltage. • I/P under voltage. • Over temperature. • Internal Fan failure.

  10. Circuit Breaker Card (CBC) 6x CCB for CTU2 2x Push Button HIISC 2x Push Button SURF2 1x Tx RF Blocks 1x FAN trays

  11. States LEDs – GREEN (normal operation) RED (Fault). Status LEDs Compact Flash Slot • Compact Flash Card slot – contains 32Mb of memory. • TTY MMI – connection for 9 pin D type connector. • Reset Buttons • CPU – is a Soft Reset (Reset Controllers Main Processors. Software remains in RAM). • FULL – is a Hard reset. Removes software from memory. Reset Buttons TTY MMI • CAL PORT – Calibrates the Sync Block. The 8K Reference is used in GCLK calibration. NIU Ethernet Port CAL Port • The NIU Ethernet and SYNC/NIU TTY Port are for factory use only. Synch/NIU TTY PORT H11SC Front Panel

  12. HIISC Functional Diagram

  13. Uplink RSL Insertion 16Kbs only SMuRF Sync, Mux, uBCU, Replacement, FPGA E1 Inputs x 6 Current x 8 Future LAPD Encode/Decode Layer 2 processing CTU2 dual carrier unit single/dual carrier operation single frequency band BTP function of the BTS runs site software and call processing functions Field Programmable Gate Array (FPGA) similar function as the ASIC 64Kb switch incapable of sub-rate switching Horizon IImacro HSCII Block diagram Second H2SC configured for redundancy Three on board XMUX functions FMUX equivalent

  14. Cabinet Expansion • The Cabinet can be expanded up to 3x Horizon II macro Cabinets • Can be expanded with Horizonmacro and Mcell6 cabinet combinations. • Expansion Kit – 1x XMUX card 1x Input/Output (I/O) card 1x 2m Fibre Optic cable

  15. Horizon II Cabinet H-II Radio CTUII radio(s) H-II Expansion Cabinet TDM NBSC HIISC Alarm Alarm XMUX Site IO XMUX Site IO Horizonmacro Cabinet FMUX FMUX Cabinet Components – Inter connections

  16. Holdup Unit (AC Supply only)

  17. Cabinet Temperature Control • Operating range -5 C to +45 C • Three Internal FAN units – speed controlled • 3x Cabinet Temperature Sensors – • 1x (70 C) for cabinet alarm • 2x (85 C) to shutdown the cabinet, reset at 55 C.

  18. Horizon II Site Controller (HIISC) • Performs functions of: MCUF, NIU, FMUX and BPSM in Horizonmacro cabinet. • Cabinet supports 2x HIISC cards Master/Slave ( redundancy) • Compact Flash card (32 Mbyte memory)

  19. XMUX Location XMUX in slot 0

  20. XMUX Functional Diagram

  21. Input/Output (I/O) card Connects up to 3x extra cabinets Fibre optic connections GPS connector (not supported) Site Expansion Board

  22. SITE I/O PANEL CONFIGURATION GPS connection Fibre connections IN/OUT

  23. E1 Horizon II macro (6xCTU2) X M U X Horizon II macro (6xCTU2) Two Horizon II macro’s expanded. E1 Horizon II macro (6xCTU2) X M U X Horizon II macro (6xCTU2) F M U X Horizonmacro (6 x CTU) Horizon II macro, expanded to a Horizon II macro and a Horizonmacro. Expansion configurations

  24. E1 Horizon II macro (6xCTU2) X M U X F M U X Horizonmacro (6 x CTU) F M U X F M U X Horizonmacro (6 x CTU) Horizonmacro controlling a Horizon II macro and another Horizonmacro. E1 Horizon II macro (6xCTU2) X M U X F M U X M-Cell 6 (6 x TCU) F M U X F M U X Horizonmacro (6 x CTU) M-Cell 6 controlling a Horizon II macro and a Horizonmacro. Expansion configuration (cont)

  25. Cabinet Alarm Module • Collects All internal Cabinet Alarms • Controls the PIX connection (customer external alarms) • Process Antenna VSWR alarms Note: NOT backwards compatible to the Horizonmacro cabinet

  26. Mains Door 1 LVD Fan 0 Fan 1 & 2 Alarm Board ALL LEDs are GREEN when the equipment is OK Only 4x active Displays RED when equipment is faulty

  27. Compact Transceiver Unit (CTU2) CTU2

  28. Compact Transceiver Unit ( CTU2) • Single Density Mode – High Power63W (48dbm) 900MHz • 50W(47dbm) 1800MHz • Normal Power 20W (43dbm) 900MHz • 16W (42dbm) 1800MHz • Double Density Mode –Normal Power 20W (43dbm) 900MHz • 16W (42dbm) 1800MHZ

  29. CTU2 backwards compatibility Compact Transceiver Unit 2 (CTU2) Backwards compatible with Horizonmacro Cabinet (with minor limitations). • Requires the correct software ( GSR6 HII) • Can NOT support the CCB controller function • O/P power reduced when in Double Density Mode • BBH not supported

  30. CTU2 Receiver Sensitivity Performance EGSM900 • -110.5 dBm, static channel • -107.5 dBm, faded channel DCS1800 • -111.5 dBm, static channel • -108.5 dBm, faded channel

  31. Compact Transceiver Unit 2 (CTU2) TRANSMIT RF OUT TEST INTERFACE TTY INTERFACE VCAT INTERFACE Radio Status LED Tx Status B LED Tx Status A LED

  32. CTU2 to SURF2 interconnection Second SURF2 not supported (4 branch diversity)

  33. PA Temp. 2nd Temp. F Basic Block Diagram – TX (PA only) Fwd Power Detect A PA Branch 1 Branch A VVA Rev Power Detect PA Mode Switches PA Pad Switches Phase Adjust Branch B VVA PA Branch 2 Fwd Power Detect B

  34. RF Equipment RF Equipment

  35. Sectorized Universal Receiver Front end (SURF2)

  36. SURF2 Functional diagram 3x Ant ports with 2x Branches each Expansion

  37. The Antenna VSWR monitoring function is used to detect faults in antennas or antenna path connections. VSWR Monitoring Antenna To SURF Tx Block VSWR Monitor Rx Filter Tx Filter Tx Alarm Board CTU2 Signal

  38. Cabinet TX Blocks Transmitter RF Blocks New RF Blocks: • DUP - Duplexer • HCU - Hybrid Combiner Unit • DHU - Dual Hybrid Combiner Unit Connecting Panels • Blanking Plate • Feedthrough plate

  39. Transmitter Blocks

  40. Blanking Plate Used to control the Air flow within the cabinet

  41. Feedthrough Plate

  42. Duplexer- DUP • Connects a single CTU2 to • a single Tx/Rx Antenna. • Typical 1db loss.

  43. DUP Block diagram

  44. Hybrid Combiner Unit - HCU • HCU • Used to connect 2x CTU2 via a Hybrid • Typical 3-4db loss

  45. HCU- Block diagram Typical 3-4db loss

  46. Dual Hybrid Combiner Unit - DHU Typical 6 db loss

  47. Dual Hybrid Combiner Unit - DHU 6dbs typical loss

  48. Software and Database Requirements • New Cabinet Type - horizonmacro2 (24) - horizonmacro2_ext (25) • Equipping the DRI Density is required Single or Double (called the associated DRI) • Setting CTU2 to High Power(max_tx_bts= -1)

  49. Equipping a DRI – Single Density New line within the command MMI Command : equip <site number> DRI Enter the 1st and 2nd DRI id: 0 0 Enter the density of this DRI:SINGLE Enter the cabinet identifier: 0 Enter the type of connection to the BTP: master Enter the port to which the TCU is connected: 0 Enter the 1st and 2nd RTF id: Enter the GSM cell ID where the DRI appears: 1 2 3 9 9 4 21 Enter antenna select number for this cell: 1 Does this DRI use tuneable combining: no Enter diversity flag for this DRI: 1 Enter the fm cell type: 4

  50. Equipping a DRI – Double Density Associated DRI Number MMI Command: equip <site number> DRI Enter the 1st and 2nd DRI id: 0 0 Enter the density of this DRI:DOUBLE Enter the 2nd DRI id of the associated DRI:1 Enter the cabinet identifier: 0 Enter the type of connection to the BTP: master Enter the port to which the TCU is connected: 0 Enter the 1st and 2nd RTF id: Enter the GSM cell ID where the DRI appears: 1 2 3 9 9 4 64 Enter antenna select number for this cell: 1 Enter diversity flag for this DRI: 1 Enter the fm cell type: 4

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