3G mobile networks pose new challenges to testing laboratories of both Infrastructure Vendors and Service Providers. New high speed physical interfaces and transport protocols have been introduced, mandatory management of the User Plane requires much higher processing capacity than before. LSUv3-based test beds deployed at major telecoms Manufacturers’ and Operators’ prove the value of this solution. Customizations and development of proprietary protocols, provided by PRISMA’s design team, guarantee that the test system exactly fits the Customer’s needs.
Run huge and realistic Simulation Scenarios or Share one Device among many Groups for Functional Tests
PRISMA test solutions, based on the Line Server Unit v3 (LSUv3) family, implement all the interfaces needed to build test environments for UMTS network elements. High connectivity (up to 128 E1/T1 and 16 STM-1 lines) and processing power (up to 13 Pentium® CPUs) make it suitable not only for Functional testing but also for Load&Stress testing with huge and realistic scenarios, including wire-speed User Plane support. So a single test system is used throughout the test cycle.
On the user side, test development and management can be tailored to any user profile. The standard client application developed by PRISMA, the Test Manager Tool Suite, is a general purpose environment for test development, management and execution. With its friendly GUI and a wide range of tools, it is suitable for any LSUv3 application.
Alternatively, custom client applications are available and can be developed, based on several technologies:
● programming languages (e.g. C language)
● scripting languages (e.g. TCL)
● standard Telecom languages (SDL/TTCN)
● integration with 3rd party or proprietary tools
LSU users can access test equipment in a real multi-user environment, allowing optimal resource sharing and allocation towards remote users also broadening the test lab environment.
The LSUv3 is used to emulate a complete UMTS core network, allowing to test RNC and Node-Bs in a controlled context. Differently from real equipment, the fully programmable CN emulator can simulate any kind of correct and faulty behavior and mimic equipment from different Manufacturers, besides being considerably cheaper. Both Circuit-Switched and Packet-Switched domains are supported. A friendly scripting environment allows to define the operating procedures.
The LSUv3 is used to simulate a number of RNCs towards the Core Network. The test activity is focused on the Circuit Switched User Plane, to verify the CN performances in that domain. Traffic generation uses test patterns or audio files. Additionally, voice traffic loop-back can be performed. CS data are supported too.
The LSUv3 is used to bring the RNC to its operating limits, thus verifying its performances and reliability under heavy load. The LSUv3 simulates Iub, Iur and Iu. The RNC is not fed with “bulk traffic”, but realistic scenarios are simulated where several thousand simulated users perform voice/data calls or use real packet-switched data applications (file transfer, web browsing, e-mail, etc.)
The LSUv3 high connectivity and processing power makes it the ideal mass-monitoring tool for complex networks like UMTS networks. Even monitoring of high-speed links (like wire-speed STM-1) is not a problem. Compatibility with the hugely popular Wireshark tool offers maximum user friendliness.