Verification Tools for Wireless Broadband Systems

Verification Tools for Wireless Broadband Systems

Wireless Broadband Systems are becoming ever more complex at an unprecedented pace. Verification of such an intricate system in a short development cycle is a challenging and tedious task. This whitepaper throws light on need of automated test frameworks required for a Wireless Broadband System. It discusses two effective approaches that can accelerate the verification process of physical layer and higher layers respectively of the protocol stack in a Wireless Broadband Systems like LTE.

Introduction

Continuous growth of the wireless communication industry has led to the advent of different wireless standards. The requirement for high data rate in wireless communication makes these systems complex. Increasing design complexity and tremendous time-to-market pressure make verification a complex and time-consuming process, which also requires enormous resources. Verification accounts for a major portion of the development cycle time. Reducing the verification time and minimizing the effort of human resource are some of the biggest challenges for developers across the world. Also, the ever increasing design complexity increases the number of corner test cases. It becomes virtually impossible to manually verify all the test scenarios within the specified time.

To meet all these challenges, a fully automated and generic verification tool is required that can generate corner test cases according to the design requirements and execute these test cases in regression mode. It should also be easily customizable for any scenario to minimize deployment effort.

Evolution of Wireless Broadband Systems

Wireless communication systems started off as single-user analog voice transmission as in a FM radio transmitter. It required only a modulator and a transmitter. The wireless technology has evolved and wireless users demand for data rates in Mbps and beyond to support all real-time services. However, the spectrum available is too little to share among millions of subscribers. Hence, a sophisticated processing chain in the transmitters/receivers with modules like encoder/decoder, odulator/demodulator, scheduler, radio resource managers, and so on is required.

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