Separate Signal Analyzer for Mobile Terminal Test Adaptability
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Solution Overview
Problem
The existing mobile communication terminal test systems face challenges in efficiently adding or changing test functions with changes in communication standards, leading to increased test time and costs due to the need for substituting programs in the signal analysis unit within the base station simulator.
Innovation Solution
A mobile communication terminal test system is designed with a separate signal analyzer that includes arithmetic and control processing units, allowing for the analysis of waveform data and enabling easy addition or change of functions by selecting the appropriate processing units based on the communication system and test items, without requiring changes to the transceiver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the signal analysis unit is embedded in the base station simulator, then the system structure is simplified, but it becomes difficult to add or change test functions when communication standards change
Solution Approach 1:
The system divides the test equipment into separate functional modules: the base station simulator (transceiver) and the signal analyzer. The signal analysis unit is extracted from the base station simulator and placed in a separate signal analyzer. This segmentation allows independent updates of test functions in the signal analyzer without affecting the base station simulator, thereby improving adaptability to new communication standards.
Solution Approach 2:
The signal analyzer is designed with multiple processing units that can handle different communication standards (W-CDMA, HSDPA, HSUPA, LTE, etc.). By making the signal analyzer a universal device capable of analyzing various waveform data types, the system can adapt to changing standards without requiring fundamental structural changes.
2Adaptability or versatility
If new test items are added to support new communication standards, then the test coverage is improved, but the test time increases
Solution Approach 1:
The signal analyzer pre-loads and caches processing algorithms and parameters for multiple communication standards. When a new test item is added, the system can quickly retrieve and apply pre-prepared processing routines rather than computing everything from scratch, thereby reducing the time penalty associated with expanded test coverage.
Solution Approach 2:
The signal analyzer dynamically selects and activates only the necessary processing units and algorithms based on the specific test requirements and communication standard being tested. This dynamic resource allocation ensures that adding new test items does not necessarily activate all processing capabilities, thus avoiding a linear increase in test time.
3Ease of manufacture
If the signal analysis unit is embedded in the base station simulator, then the system integration is simplified, but it increases the cost when new standards are introduced
Solution Approach 1:
The signal analysis unit is extracted from the base station simulator and placed in a separate, standalone signal analyzer. This extraction allows the signal analyzer to be independently upgraded or replaced without affecting the base station simulator, thereby reducing the cost of adapting to new communication standards.
Solution Approach 2:
Instead of replacing the entire base station simulator when new standards are introduced, the system uses the existing base station simulator hardware and only updates or adds appropriate processing units in the separate signal analyzer. This copying approach allows reusing existing hardware investments while adapting to new standards.
Data Source
AI summary
To enable addition or changes of functions with changes of communication standards in a mobile communication terminal test system. A mobile communication terminal test system includes a transceiver which has a control unit configured to append input information to acquired waveform data, a signal analysis unit which executes an analysis program, and a signal analyzer which is provided separately from the transceiver. The analysis program has a processing program which is provided for each type of arithmetic processing on the waveform data, a control program which is provided for each communication system, selects one or more processing programs for each test item, and executes the processing programs, and a switching program which specifies a communication system and a test item on the basis of the input information, and selects and executes a control program.