Research On TTCN-3Test System’s Adapter And Codec Based On Trunking Communication System

With the rapid development of trunking communication system, it is veryimportant and imperative to design and implement automated testingmethods to testtrunking communication system whether meets the requirements of the protocol,and TTCN-3has vividly become the mainstream standard protocol testing becauseof its powerful functions and a wide range of applications. TTCN-3has a widerange of applications in many different fields, especially in the field ofcommunication with outstanding achievements. Meanwhile, trunkingcommunication system as a communication system in the field of professionalcommunication, but also need this sophisticated testing techniques can be fullyautomated.In the specific test system, we need to design system adapter module andcodec module according to specific needs with the test platform and protocol.Hereby, this paper proposes a design method to implement TTCN-3test system’sadapter and codec based on trunking communication system, and validates severalsolutions for system framework, adapter, codec and test verification methodsspecific to trunking communication system. Finally, the test software developmentsolution meets trunking communication system is achieved.For the test system design, when a single protocol conformance test can notmeet the requirements, it is necessary to develop stress testing, robustness testing,interoperability testing and other extended test functions, so the emergence of anew test method that is distributed test methods.In the study of distributed testingprocess, this paper designs and implements a distributed test program trunkingcommunication system based on virtual multi-card technology.By simulatingmobile terminal or base station test software solves the existing test method, whichused to test the terminal station of the exchange system and a single test notsimulate the behavior of multiple base stations and an insufficient number ofterminal problems.While the use of virtual multiple network cards greatly improvesthe efficiency of resource utilization and testing. The paper designed andimplemented a distributed test mode and stand-alone test mode separately for theadapter, codecs and abstract test solutions.And implemented a virtual machineconnectivity services based subsidiary of the multiple network cards technology program distributed test mode.Measured test case results show that the proposedscheme is designed to test the system can accurately and efficiently achievetrunking communication system protocol conformance, interoperability and faulttolerance test.