| Along with the global commercialization of TD-LTE system, China Mobile has put forward the requirements of support TD-LTE, FDD-LTE, WCDMA, TD-SCDMA, GSM system for4G commercial terminal So, it is of great significance to research multi-mode terminal RRM conformance testing instrument for the work of terminal certification and multi-mode terminal’s R&D. The present research work of communication terminal testing instrument is mainly focused on single-mode terminal conformance testing, there also has a big shortage for the research of multi-mode terminal conformance testing. Develop the test cases of TD-LTE Inter-RAT system interoperability is an important part of multi-mode terminal conformance testing, this thesis’s main research content is to test whether the mobile terminals’ performance under the environment of TD-LTE Inter-RAT is in line with3GPP agreement.In the research process of this thesis, we should first solve the problem of information interaction between TD-LTE and TD-SCDMA/GSM system, and design the testing environment. Then use the TTCN-3as the main development language to develop the test cases.This thesis can be divided into the following three step:Firstly, systematically studied the interoperability of TD-LTE, TD-SCDMA and GSM, mainly including the cell reselection, cell handover and cell redirection.Secondly, based on the analysis of TD-LTE interoperability in3GPP protocol, from the aspects of multi-mode system simulation and terminal perfomance test to design the software architecture of TD-LTE Inter-RAT test case.Finaly, using TTCN-3language develop the test cases which supports the TD-LTE Inter-RAT interoperability. Then, according to the provisions of GCF certification to joint debugging with terminal, and given the test results.The achievements of this thesis has passed the GCF global certification, and has successfully applied to the TD-LTE terminal certification and multi-mode terminal’s development. |
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