Previous Page Print this Page

Qosmotec - AIS Air Interface Simulator

Air Interface Simulator (AIS)

AIS simulates subscriber mobility and the essential effects of the radio channel in the lab. Handover test, multipath (fast fading), and mobility simulation may be performed with any commercial mobile. Unattended testing of mobility in conjunction with call tests is enabled by an integration of AIS in LTS.

How do you simulate wireless mobility in a lab?
The Qosmotec Air Interface Simulator (AIS) simulates aspects of the air interface which are of utmost importance for network or terminal validation in a laboratory environment, where radio signals must be conveyed in shielded coaxial cables.

AIS Dual 4x4 Rack

Enquiry Support Options Training Ask Bart

Features and Benefits

  • Invoke Hand-over/ cell reselection situations
    Move mobiles between cells in artificial sceneries.

    Emulate or replay drive tests in the lab
  • Play back of recorded signal profiles.

    Easy-to-use Graphical User Interface
  • Providing access to a multitude of simulation features.

    Fully reproducible test execution
  • Perform unattended testing together with LTS.

    Optimise your network prior to physical installation
  • Use real mobiles in a virtual copy of your network.

Specifications

Architecture A Architecture B
Power Supply: 110-240 V, 50/60 Hz 110-240 V, 50/60 Hz
Attenuator Control: Integrated CPU External Linux PC
Control Interface: 10/100 Mbps Ethernet 10/100 Mbps Ethernet (high-speed array)
RS232C or IEEE 488 (low-speed array)
Frequency Range: 800-2000 MHz "GSM-module"
1600-2500 MHz "UMTS-module"
modules can be mixed in one system
1800-2400 MHz best performance
800-2900 MHz at reduced specifications
800-6000 MHz also available
Impedance: 50 Ohms 50 Ohms
RF Connectors: SMA female N female
Adjustable Attenuation: 0&95 dB 0&93 dB
Adjustment Resolution: 1.0 dB 1.0 dB
Maximum Single Step: 95 dB 93 dB
Accuracy: ± 0.5 dB (reduced bandwidth)
± 1.0 dB (full bandwidth) 		1..23 dB: ±(0.3 dB + 5% of att. value)
24...93 dB: ±(0.5 dB + 10% of att. value)
reduction of range to 0...75 dB: ± 3.5 dB
VSWR in/out: <1.4 (full bandwidth, > 3dB adj. att.)
<1.2 (on request for limited bands) 		typical: 2.0 (full bandwidth)
typical: 1.7 (1800-2400 MHz)
Insertion Loss, 2x2 array: 14 dB (900 MHz)&21 dB (2200 MHz) 14.5 dB (typical)&16.0 dB (max.)
Insertion Loss, 2x4 array: 21 dB (900 MHz)&28 dB (2200 MHz) 18.0 dB (typical)&20.5 dB (max.)
Insertion Loss, 4x4 array: 21 dB (900 MHz)&28 dB (2200 MHz) 21.5 dB (typical)&23.0 dB (max.)
Insertion Loss, 8x8 array: 28 dB (900 MHz)&35 dB (2200 MHz) 28.5 dB (typical)&30.0 dB (max.)
Max. Input Power: +23 dBm (2x2 array)
+26 dBm (2x4 / 4x4 arrays)
+29 dBm (8x8 array)
higher power levels on request 		+26 dBm (2x2 / 2x4 arrays)
+30 dBm (=4x4 array)

higher power levels on request
Switching Delay: 8 µs < 30 µs (setting 1 attenuators; high-speed array)
< 80 µs (setting 36 attenuators; high-speed array)
< 120 µs (setting 64 attenuators; high-speed array)
< 10 ms (low-speed array)
Table File Playback: 1 ms resolution 1 ms resolution (high-speed array)
10 ms resolution (low-speed array)
Fast Fading Simulation: supported supported (high-speed array only)
Rack Dimensions: 19" x 4 U x 73 HP (regular)
19" cm x 1 U x 58 HP (compact) 		19" x 3-9 U x 84 HP (depends on # of radio paths)

Applications

    Intuitive, real-life-like GUI Providing access to a multitude of simulation features:
  • Playback of table files
  • Replay of recorded or synthetic signal profiles,
    · Fast Fading (Multipath) simulation
  • Rayleigh / Rician fading; fluctuation speed up to 2 kHz,
    · Display of power levels in dBm
  • Based on calibration measurement, which takes into account all signal losses between BS and MS,
    · Topographic simulation
  • Simulation of field strength predictions based on topography and antenna location / characteristics,
  • Antenna Pattern Simulation · Indoor area simulation
    Simulates attenuation of walls, handovers between adjacent rooms,
  • Simulation of real antenna patterns
    Import of radiation patterns in 2 and 3 dimensions, accounting for antenna height and tilt,
  • Multi-user operation
    From his private client PC, each user can reserve one or several mobiles and use them in his personal AIS scenery.
  • Integrated with LTS for unattended testing
    Synchronized mobility simulation during service tests.
  • Integrated with Qosmotec Digital Switch Matrix
    Dynamically selects subset of cells to simulate drive tests across more BS than supported by AIS configuration.
  • Broadband, bi-directional operation
    Option to separately control up- and downlink attenuation.
  • Wide selection of system sizes
    2MS x 2BS, 2x4/4x2, 2x6/6x2, 4x4, 6x6, 4x8/8x4, 8x8, 4x16/16x4&; an nxm system provides n·m signal paths.
  • Suited for all networks from 800 MHz to 6.0 GHz
    All (E)GSM bands, GSM-R, CDMA / 2000 / EV-DO, PDC, WCDMA-1900 / 2100, DECT, 802.11a/b/g/h, WIMAX
  • Available soon: Interface to BSS / UTRAN
    Direct access of BS-related data, such as Global Cell ID, cell/transmission parameters, verification of handovers, etc., where radio signals must be conveyed in shielded coaxial cables.

Data Sheet

pdfimage AIS Air Interface Simulator Brochure

Back to Top Previous Page Print this Page
© 2004-2010 Frame Communications Limited
Site Terms

Registered in England No.2843499