According to the plan, before and after this year's communication exhibition (September), all participating testers will complete the NSA's field test and independent network testing (SA). Some leading manufacturers will complete the outdoor test project, and the third phase will be completed by the end of this year. All test items tested.
5G is much more complicated than you think
According to the "Communication Industry News" reporter, China has built more than 100 base stations in MTNet Lab and Huairou Outfield, building the world's most complete 5G indoor and outdoor integration test network.
China's 5G R&D is started in 2016 and is guided by the Ministry of Industry and Information Technology. The IMT-2020 (5G) Promotion Group is responsible for the overall implementation. According to the plan, the 5G technology research and development test will be carried out in 2016-2018, and will be carried out in 2019-2020. 5G product development test.
'The third phase of the test will be completed in the second half of this year. Small-scale network verification for commercialized products, interoperability testing based on 3GPP R15 standards, and 5G typical application fusion test, and some companies will verify and evaluate R16. Such as new features and new features, continue to support international standard verification. 'Wang Zhiqin said.
At the same time, the third phase test networking mode will be tested based on NSA and SA standards, while the third phase test will follow the principle of 'first order device, then interoperate, first indoor, then outer field', according to the test. It is planned that all manufacturers will complete the indoor testing of independent networking before and after the communication exhibition. Some leading manufacturers will complete the outdoor testing project; at the end of this year, all manufacturers will complete all the testing projects of the third phase testing. Wang Zhiqin said that during the actual test, In addition to technology and products, the industry has found that 5G's definition of technical standards is very complex, and it needs to meet multiple scenarios and multiple requirements. The parameters are much more complicated than 4G. Therefore, in order to prevent interference between 5G TDD networks between different operators, Accelerate the 5G R&D industry process, and the promotion group decided to adopt the unified frame structure for the third phase of the test. 'According to the comprehensive evaluation, it is decided to use the 2.5ms dual-cycle frame structure. All subsequent system vendors and terminal manufacturers will develop based on this frame mechanism. 'Wang Zhiqin Express.
At the same time, for the third-stage test specification system, it will follow the 3GPP standard and develop and improve the 5G specification.
Non-independent networking room test has been completed. Terminal is a problem.
According to the "Communication Industry News" reporter, at present, the third phase of the NSA test has completed the indoor test, mainly verifying the basic functions of the physical layer, basic functions of the RRC protocol, physical channel, link adaptation and adjustment, EC-DC dual connectivity test, Multi-antenna technology, CU-DU separation architecture, RF testing, NSA core network testing.
In the basic function test of the base station, each system manufacturer developed a 3.5GHz pre-commercial 5G base station, which basically supports 64 channels, 192 frames, 200w power. At the same time, the manufacturer adopts a self-test test terminal or a third-party terminal simulator, and the overall test result is good. 'But at present, the terminal is still a problem, and the test results will be limited to a certain extent. Therefore, we must continue to improve the RRC protocol functions such as measurement and mobility management to enhance stability. ' Wang Zhiqin said.
In terms of RF transmitters, all the basic test vendors can meet the requirements of test and test indicators. The transmitter spurs in the 3640MHz-4200MHz band use indicators developed by the Radio Authority, and the equipment can support them.
In terms of the core network, the NSA standard core network is upgraded through the 4G core network. The EPC can be based on the virtualization platform and the traditional device upgrade. Currently, each system vendor completes the EPC system test supporting the NSA architecture and can support Dual connectivity, NR access restrictions, UE capability processing, Qos, billing and usage reporting, gateway selection, etc. 'Overall, the test results are good, but continue to improve the Qos parameter negotiation, billing and usage reports and other functions. 'Wang Zhiqin said.
At present, most manufacturers have completed the NSA standard indoor test content, but a small number of vendors have completed field tests, testing single cell throughput, single user throughput, multi-cell dynamic throughput and mobility testing, delay testing, coverage. Test and uplink enhancement tests.
At the same time, interoperability R&D testing based on NSA standards is also underway. Huawei and Intel, Datang and Spreadtrum, Datang and Qualcomm have launched interoperability tests.
In addition, the IMT-2020 (5G) Promotion Group is also actively pursuing 5G new technology/service exploration, including 5G enabled AI campus and uRLLC enabled V2X.
Finally, Wang Zhiqin said that at present, Huawei, Ericsson, Datang, and Nokia Bell system manufacturers in Shanghai have developed 5G system products supporting NSA mode based on pre-commercial hardware platforms, which are in line with the main functions of NSA networking mode, including dual connectivity, large Bandwidth, large-scale antenna technology, high-order modulation, and core network functions, but some aspects of functionality and performance need to be improved.
According to the "Communication Industry News" reporter, for the follow-up third stage test, the NSA field test and SA indoor test were completed before September, for system performance test, room system test, interoperability development test between system and terminal prototype , accelerate the maturity of the system and chip, and launch 5G new business applications.