Patent ID: 6011830
Filing Date: 2000-01-04
Classification: H04M,H04W

Abstract:
An operational test device for executing an operational test (LT, DT, CT) for a test system (SUT) that has operating states corresponding to a real operating system (SUT-RA) used in a real operating environment, under test conditions, comprising:a) a test case generator (TCG) for generating a number of test cases (TC) with test commands that are each intended to produce a desired change in operating state within said test system;b) a test device interface (INT) for receiving said test commands and for outputting corresponding operating signals to the test system (SUT) for bringing about said desired changes in operating state;c) said test case generator (TCG) comprising:a test state model generator (TSTS-G, PNM-G) for generating a test state model of the test system (SUT) from information on the hardware configuration of the test system (SUT), information on the possible operating states of said real operating system (SUT-RA), from traffic values that indicate transitional probabilities ascertained during the real application of said operating system (SUT-RA) for said operating states, and from the permitted test commands of the test system (SUT);a test state model store (TSTM-S, PNM-S) in which said test state model is stored;a test state model simulator (TSTM-Sim, PNM-Sim) that statistically passes through said test state model and in doing so generates desired operating state transitions; anda test state model command generator (TSTM-CG, PNM-CG) for successively generating the test commands of said test cases (TC) on the basis of said operating state transitions generated by said test state model simulator.