ABSTRACT
CONTENTS 9.1 Introduction ............................................................................................... 176 9.2 Conformance Testing ............................................................................... 177 9.3 Interoperability and Certification Testing ............................................. 178
9.3.1 WiMAX Certification Overview ................................................. 178 9.3.2 System Profiles .............................................................................. 179
9.3.2.1 Certification Profiles ...................................................... 181 9.3.2.2 The WiMAX Forum Certification Process .................. 181
9.3.3 Abstract Test Suite ........................................................................ 182 9.3.3.1 Certification Challenges ............................................... 183
9.4 WiMAX Plugfest Testing ......................................................................... 183 9.4.1 3rd Plugfest Test Architecture ..................................................... 184
9.4.1.1 SUT Configuration 1 ..................................................... 184 9.4.1.2 SUT Configuration 2 ..................................................... 184 9.4.1.3 SUT Configuration 3 ..................................................... 184 9.4.1.4 SUT Configuration 4 ..................................................... 186 9.4.1.5 Test Plan for Plugfest .................................................... 186
9.4.2 5th Plugfest Architecture ............................................................. 187 9.4.2.1 SUT1: Single BS and Single MS
(from Same Vendor) ...................................................... 187 9.4.2.2 SUT2: Single BS and Single MS
(from Different Vendor) ................................................ 188 9.4.2.3 SUT3: Single BS and Two MS
(from Same Vendor) ...................................................... 188 9.4.2.4 SUT4: Single BS and Two MS
(from Different Vendors) .............................................. 188 9.4.2.5 SUT5: Single BS and Three MS (Three
Different Vendors) ......................................................... 188 9.5 Radio Conformance Testing and Measurements ................................. 189
9.5.1 Transmitter Power Level Control ............................................... 189 9.5.2 Transmitter Spectral Flatness ...................................................... 190 9.5.3 Transmitter Constellation Error .................................................. 190
and
9.5.4 Transmitter Spectral Mask .......................................................... 190 9.5.5 Nonspecified Transmitter Measurements ................................. 191 9.5.6 Receiver Tests ................................................................................ 192
9.6 Conclusions and Summary ..................................................................... 193 References ........................................................................................................... 193
Testing and certification of telecommunication products have been a challenging task owing to the rigorous and complex nature of the testing process and the related infrastructure involved. Telecommunication product manufacturers often spend a large portion of their time and budget on testing activities, as they are very critical to the overall success and marketability of the product. The testing time of wireless products can easily account for 70% of the cost of the product as engineers test for certification, government compliance, and electromagnetic compatibility and electromagnetic interference mitigation [13]. WiMAX technology is a standard-based form of wireless broadband in which products from different vendors are intended to be interoperable, thus boosting competition and driving down prices through high-volume product production. WiMAX product testing and certification are more complicated due to complexity in several factors, including radio, protocol, and interoperability testing issues.
