| Because of the satellite communication system is not restricted by geography, communication bandwidth and transmission characteristics of large capacity, compared with the traditional mobile communication has irreplaceable advantages, especially in dealing with natural disasters and military aspects, its advantage is more prominent. Mobile terminal is one of the most direct keys for people to use communication technology. The mobile terminal is not neglected in communication industry chain. The mobile terminal that is the only entrance to the whole communication system, occupy an important position. The test for mobile terminal by terminal tester is quality guarantee of perfect functions and reliable performance.This paper gives a brief overview of the functions of the terminal tester and a brief description of the software design architecture of the terminal tester. The paper elaborates the design and implementation of protocol stack controller in detail. Protocol stack controller achieve the main function of high-level entities in the terminal test sets. It is the core of the entire terminal tester software. It is responsible for the entire protocol stack scheduling. The terminal tester is designed three function module-layer 3 entity, parameter medication and configuration, LOG. In order to improve the message handling efficiency of the protocol stack controller, the paper make use of multi thread mode according to the different ways of receiving messages from the protocol stack controller.In order to facilitate the process that the protocol stack controller identify quickly the received message and make respond in time, the paper add the header in the protocol stack controller interface design to identify the source of information. In addition,State mechanisms is designed in the design process of the protocol stack controller, so that the tester can quickly grasp the running state of the terminal tester or the test terminal. |
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