PRELIMINARY

WisyMAX Base Station Emulator (WisyMAX-BSE) is NI LabVIEW® based system for real-time test and validation of PHY and MAC layers of Mobile WiMAX IEEE802.16e Subscriber Stations (SS).

WisyMAX-BSE fully emulates a Mobile WiMAX Base Station by implementing both PHY and MAC layers of the Mobile WiMAX standard (according to the IEEE 802.16-2004 Cor2/D3 document) in order to test Wave1 and Wave2 (partially) CRSL 2.0 compliant Subscriber Stations.

WisyMAX-BSE is a flexible tool set based on proprietary IPs to be used as a RF signal generator/analyzer and as a protocol tester for Mobile WiMAX compliant product validation in R&D and manufacturing. The WisyMAX-BSE package includes a complete set of NI LabVIEW® VIs and source code examples of common WiMAX testing application to easily create dedicated tests for custom WiMAX devices.

WisyMAX-BSE is a complete customizable hardware and software system, based on the NI PXIe-5641R IF-RIO, the NI PXI-5650 RF signal generator and the NI PXIe-8130RT embedded real-time controller, that works within the NI LabVIEW® environment.

RF setup depends on the WiMAX bands. For instance, for the 2.3-2.7 GHz bands (1A, 1B and 3A profiles) it is composed by the NI PXI-5610 2.7 GHz RF upconverter and the NI PXI-5600 2.7 GHz RF downconverter.

PHY/MAC WiMAX Tester functionalities
WisyMAX-BSE provides the SS performance assessment and testing for both DownLink (DL) and UpLink (UL)

  • DL/UL testing of any Mobile WiMAX signals
  • Calibrated UL/DL RF generation and analysis
  • UL transmitter measurements (e.g., power, CFO, ScFO, I/Q offset, EVM, CCDF, modulation parameters, spectrum flatness)
  • Control functions of session parameters (e.g., ID, DL-MAP, UL-MAP, DCD, UCD)
  • BER/PER measurements
  • MAC processing, packet analysis and logging IP Interface (IPv4 CS layer).

WisyMAX-BSE supports the following PHY & MAC features:

  • Cyclic Prefix Size: 1/4, 1/8, 1/16, 1/32
  • Frame Length: 2 ms, 2.5 ms, 4 ms, 5 ms, 8 ms, 10 ms, 12.5 ms, 20 ms
  • FFT Size: 128, 512, 1024, 2048
  • Nominal Bandwidth: 5 MHz, 7 MHz , 8.75 MHz, 10 MHz
  • TTG and RTG guard time for TDD and H-FDD mode
  • Up to 8 zones for DL Frame
  • Up to 64 burst in a DL Frame
  • Up to 16 concurrent bursts in a DL Frame
  • Uplink Frame Decoding for only one SS device. In the UL frame, only one data burst or only one ranging region is supposed to be present (sequential SS tests)
  • DL PUSC and DL FUSC Permutation
  • UL PUSC Permutation
  • Initial Ranging and Handover Ranging in UL PUSC zone with 2 or 4 symbols
  • Periodic Ranging and Bandwidth Ranging in UL PUSC zone with 1 or 3 symbols
  • Timing Offset, Power Offset and Carrier Frequency Offset (CFO) estimation from the Ranging Zone
  • Convolutional Coding (CC) with Tail Biting
  • Randomization and Interleaving
  • QPSK, 16-QAM and 64-QAM Data Modulation
  • Repetition Coding: 2, 4 and 6 (also FCH repetition coding)
  • Subcarrier PRBS Randomization
  • BPSK Pilot Modulation
  • All Preamble Index Support
  • IPv4 Convergence Sub-layer
  • MAC PDU Formats
  • MAC Feedback Mechanism
  • Network Entry
  • ARQ support
  • QoS support
  • Data Delivery Methods: UGS, RTVR, NRTVR, ERTVR, BE
  • Request Grant Mechanism
  • Normal MAP
  • Closed Loop Power Control
  • Reset command and Deregistration message
  • Channel Measurements message/command support
  • DL CINR report Base Station Support
  • Contention Resolution.

RF Hardware
The main HW specifications of the NI kit composed by NI PXI-5610 RF Upconv., NI PXI-5600 Downconv., NI PXI-5650 RF Generator and NI PXIe-5641R IF -RIO (1):
RF Power range: -140 dBm to +10 dBm
RF Frequency range: from 250 kHz to 2.7 GHz
Clock stability: better than 0.1 ppm
RF Power Accuracy: about 1 dB
Frequency resolution: 1 Hz
Spurious responses: maximum -40 dBc (second harmonic).

Note (1): see NI Datasheets for more detailed information.

Download Data sheet
(pdf 1044 Kb)
FEATURE & BENEFITS
  • Provides WiMAX-e PHY & MAC bi-directional links with multiple WiMAX subscriber stations testing.
  • High-level stand-alone Tester application (for MS Windows PCs) for detailed analysis of MAC packets and RF measurements of Mobile WiMAX signals.
  • Tester software can be easily adapted for custom WiMAX devices.
  • Proprietary MAC & PHY IPs are available for customized Mobile WiMAX applications.
 
 
 
     
     
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