3G era comprehensive test is coming
The domestic large-scale 3G testing organized by the former Ministry of Information Industry is nearing completion. The first phase of testing started in 2003 was mainly conducted in the laboratory, and the second phase of testing from April to September 2004 was mainly field testing. In the third stage, the commercial trial network will be tested, and in the fourth stage, the test will be conducted around 3G service performance. At present, the 3G testing of telecom operators has entered the test phase of the commercial trial network, and will gradually shift to the fourth phase of business performance testing.
3G testing faces new propositions
In the 2G era, the focus of testing is on the physical layer and protocol layer, because 2G mainly provides voice services, and testing on the physical layer and protocol layer can ensure the quality of voice service. While 3G is completely different, a large number of new applications are constantly appearing on 3G mobile devices, and almost all of them are data-centric applications. The data service performance experienced by the end user will determine the quality of the equipment. Therefore, in the 3G era, the focus of testing is shifting. Although it is always important to evaluate the minimum performance indicators and signaling conformance tests of mobile devices, more and more tests will focus on verifying the applications and other advanced features supported by the terminal. The performance of these software-based applications often directly affects the end-user experience, so in order to achieve the successful deployment of new services and applications, test tools must help manufacturers and operators determine the existence of end-to-end applications in the laboratory before deployment problem.
Considering that once the 3G mobile phone is sold to the end user, it is unlikely that it will be recovered. Therefore, testing the application performance of 3G mobile phones is particularly important. After testing the basic functions of a mobile phone, can an application such as use a 3G network as a wireless transmission carrier run? How is it running? Do they meet end-user expectations? These questions must be answered before the phone is officially launched. Therefore, before launching commercial 3G equipment, mobile equipment manufacturers and network operators must conduct a comprehensive evaluation including integration, design verification, interoperability, and application / service testing. These test requirements span all stages from product development to official commercial use. The key element to meet these requirements is the need to provide powerful network simulation capabilities in the laboratory.
The test of 3G service is very necessary. Why go to 3G is because 3G can provide more services than 2G and 2.5G. After the completion of 3G network deployment, 3G service testing will inevitably become the focus of 3G testing. 3G business is mainly Including voice, data, multimedia. On the one hand, service testing includes QoS testing to help operators improve or ensure market competitiveness; on the other hand, for service distribution and applications, they can fully understand user application types and distribution, thereby guiding operators to rationally adjust network resources, optimize networks, and improve The utilization of network resources.
Comprehensive testing helps smooth upgrade
With the development of the mobile communication industry, the scale of the network has grown, and the number of mobile users is increasing. The mobile communication network is facing severe challenges: the rapid development of the social economy and the acceleration of urban construction have caused continuous changes in the network environment, which has caused the increasingly complex structure of the mobile communication network. The number of mobile users has grown tremendously, and the scale of the network continues to expand, but frequency resources are scarce. There are some remaining problems in the process of network construction and capacity expansion, resulting in a decline in network quality.
Many of the above problems need to be solved through network testing, analysis and optimization. With the intervention of the mobile communication competition mechanism, how to improve network operation performance and network quality has become an important bargaining chip for major operators. Major operators are very concerned about the quality of mobile communication networks. Therefore, the network optimization work cannot be ignored. Network optimization should first analyze the data through a large number of data tests (DT / CQT) and OMC. Among them, DT / CQT is an indispensable link. Only through this field test to find the network The existing shortcomings, formulate plans, and further adjust and optimize the network structure, the operator's network will be more competitive.
It is foreseeable that in the future, multiple generations of mobile communication technologies will be replaced in the coexistence. To cope with this phenomenon, the test technology can be smoothly upgraded by a powerful comprehensive tester, and the development of universal, upgradeable, configurable, and 2G compatible The wireless communication protocol comprehensive tester for mobile phone testing makes it a multi-protocol test set for mobile phones with strong upgradeability. Such a comprehensive communication test instrument integrates traditional box-type measuring instruments such as RF generator, spectrum analyzer and power meter, and is equipped with various options, so it can complete a series of RF test tasks and allow equipment owners to expand The service life and greater flexibility of the test equipment meet the transition from 2G to 3G testing and the needs of next-generation mobile phones for test equipment, while shortening the measurement time and speeding up the test, which can effectively reduce test costs.
Link: Multiple tests to ensure business quality
3G testing includes network testing, terminal testing, special testing based on operator requirements, conformance testing, etc.
3G network test. Network performance is generally reflected by indicators such as wireless coverage, connection rate, dropped call rate, voice quality, and system capacity. The test on the 3G network side is the test of network performance, including the test of coverage, capacity and network switching. The second is the testing of network service quality, including the testing of voice services and data services.
3G terminal test. 3G will promote the emergence of a whole new set of mobile services, so that users are no longer restricted to cables, fixed access points and slow connection speeds, and can access various services anytime and anywhere. At the same time, the work related to 3G terminal testing is also extremely important, which is not only related to the performance quality of 3G terminals, but also related to the continued and coordinated development of 3G in China.
Special tests based on operator needs. According to the different customer groups and the actual situation of the network, different terminals are required to support different business functions. In order to ensure the quality of these business functions, it is necessary to perform business application tests and software function tests on the terminals. In a sense, this special test according to the needs of operators is the guarantee for the success of 3G operations.
Conformance testing. Conformance testing refers to verifying that the behavioral specifications of the network and mobile phone are consistent with the behaviors specified in the core specifications before commercial use, including radio frequency conformance testing, protocol conformance testing, UICC / USIM testing, and audio conformance testing. Compared with 2G terminals, the conformance testing of 3G terminals is more complicated and more challenging. It must support multiple services such as variable-rate voice, video, data transmission, and Internet access. It must also support some unknown services for a long time.
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