Automated CDMA Roaming Testing via Base Station Emulation
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Solution Overview
Problem
Current methods for testing CDMA device roaming and Preferred Roaming Lists (PRL) are expensive, inaccurate, and fail to effectively manage roaming selection, leading to customer dissatisfaction and increased costs for carriers.
Innovation Solution
An automated testing solution that uses base station emulation hardware to recreate RF conditions based on PRL entries, allowing for the creation of specific test scenarios for 1X and 1xEV-DO devices, and categorizes PRL entries to determine system priority and geographic relationships, enabling precise testing of system acquisition and roaming characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If automated testing with base station emulation is implemented, then testing accuracy and reliability improve, but device complexity and implementation cost increase
Solution Approach 1:
The patent introduces base station emulation hardware as an intermediary component that bridges the test device and the PRL file system. This emulator creates virtual RF conditions and system responses without requiring actual network infrastructure, thereby improving testing reliability while containing complexity through modular simulation rather than full system replication
Solution Approach 2:
The patent creates simplified copies of actual base station behaviors through emulation. Instead of testing against real diverse network conditions, the system uses emulated models that replicate essential RF characteristics and system responses, achieving reliable testing of roaming selection logic without the complexity of comprehensive real-world deployment
2Measurement precision
If comprehensive PRL testing scenarios are created, then testing precision improves, but testing time and processing complexity increase
Solution Approach 1:
The patent performs preliminary categorization of PRL entries by geographic region and system priority before executing tests. By pre-organizing test data and identifying critical test scenarios in advance, the system achieves comprehensive testing precision while reducing actual test execution time through focused scenario selection rather than exhaustive testing of all possible conditions
Solution Approach 2:
The patent segments the comprehensive PRL file into distinct geographic regions and system priority levels, creating separate test scenarios for each segment. This allows precise testing of system acquisition under specific conditions while managing testing time by executing only relevant segments based on the device's actual operating context
Data Source
AI summary
The present invention discloses an automated testing solution for PRL's, System Acquisition algorithm, and CDMA device performance. A testing plan loads a specific PRL into a test device, reads and categorizes the entries in the PRL file, and then uses the information to set the parameters on the emulation hardware needed for each test case. The testing solution allows an operator to specify the PRL file to be used for testing and the testing plan will determine the relationships between different PRL entries in the test file including the System of equal priority in the same GEO, System of lesser priority in the same GEO, System of higher priority in the same GEO, Systems in different GEO, and Collocated EVDO systems. Once the entries are categorized the test script will then select the entries need to create the required test conditions on the base station emulation hardware. The test suite employs base station emulation hardware to create the RF conditions stipulated in the test case. The exact RF conditions will be based on the entries in the test PRL. Once all the system parameter information is extracted from the PRL file and all the combinations of systems is created as per the requirements of each test case, the test is executed, with the automation scripts setting the parameters on the BSE and managing the test device as it is programmatically controlled through the test procedures.