WiMAX DUT Radio conformance and manufacturing test automation

This page covers radio conformance and manufacturing test automation setup and typical transmitter and receiver tests as defined in the wimax forum radio conformance specification WiMAX Forum Mobile RCT Document v1.0.0.

Figure depicts the typical test set up used for wimax DUT testing.The key building blocks of the WiMAX RCTT(Radio conformance test) system are:

PC Controller: The PC controller is primarily used to manage the different instruments in the test setup according to the required test case.

Vector Signal Analyzer (VSA): the VSA is used to measure the PHY layer characteristics of the MS UUT such as Frequency, Error Vector Magnitude (EVM), Spectral Flatness and Spectral Mask.

Vector Signal Generator (VSG): It is used to generate interfering signals, and can provide defined noise levels. VSA/VSG referred here are NI-RFSA and NI RFSG respectively.

BSE (Base Station Emulator or Signaling Unit): This is a signaling device capable of emulating WiMAX base stations. Further, the signaling unit provides the special signaling procedures intended for RCT testing. This is not required for Non link based test.

Channel Emulator: This unit is used to emulate multipath and moving propagation conditions. This is only necessary in a uni-directional way, i.e. in UUTs receive path.

Finally, the test setup is completed with an RF Switching Unit which is commanded by the PC controller to provide the necessary RF paths to perform testing. Other elements of the system are a clock reference that provides the necessary timing accuracy in certain test cases and a DC power supply to be used by the UUT when required. Compliance tests as per WiMAX Forum Mobile RCT Document v1.0.0.

wimax radio conformance manufacturing test automation

MS Receiver Tests

MS Receiver Maximum Tolerable Signal
MS Receiver Preambles
MS Receiver Cyclic Prefix
MS Receiver RSSI Measurements
MS Receiver PCINR Measurements
MS Receiver Pilot-based ECINR Measurement (Wave 2)
MS Receiver Adjacent and Non-Adjacent Channel Rejection
MS Receiver Maximum Input Signal
MS Receiver Sensitivity
MS Receiver PHY Support for Handoff
MS Receiver MIMO Processing (Wave 2)
MS Receive Beam forming Processing (Wave 2)

MS Transmitter Tests

MS Transmitter Modulation and Coding, Cyclic Prefix and Frame Duration Timing
MS Transmit Ranging Support
MS Transmitter Modulation and Coding
MS Transmit Power Dynamic Range
MS Transmit Closed and Open Loop Power Control
MS Transmitter Spectral Flatness
MS Transmitter Relative Constellation Error
MS Transmit Synchronization
MS Transmit Collaborative MIMO
MS Transmit Beam forming Support

Links to WiMAX MAC Layer resources

WiMAX Ranging Procedure
WiMAX Bandwidth Request procedure
WiMAX Network Entry Procedure
WiMAX FCH header format
WiMAX TLV Format basics
WiMAX Timers
WiMAX Network Interface types
WiMAX QoS Classes

Test and Measurement Related Links

Test and Measurement Signal Generator Companies
Test and Measurement Signal Analyzer Companies
Physical layer measurements
Production tests on RF and SoC devices
GSM measurements tutorial
RF measurements tutorial
Testing and certification facility providers
EMI and EMC solution providers
DigRF Test solution providers
wireless channel emulator
BER T&M equipment manufacturers
Comparison between R&S CMU200 versus Agilent 8960 wireless test equipments

RF and Wireless Terminologies