With more and more wireless communication standards, more and more test items, faster and faster speed requirements, and better quality requirements, these increasingly high standards of test requirements always remind testers to improve test accuracy. , speed up the test progress. At the same time, people-centered, clothing, food and shelter penetration has become more widespread, more and more terminal applications: such as medical, family, Internet of Things. The user terminal experience is becoming more and more important. Whether the test under pure non-signaling is sufficient (and the DUT test mode), whether the pure RF test is sufficient, these remind the tester that the above factors must be taken into account.
How to solve the multi-mode multi-frequency test problem?
With the continuous evolution and development of 802.11 wireless network standards and Cellular wireless communication technologies, the phenomenon of multiple standards and technologies coexisting in wireless communication will exist for a long time, and a hundred flowers will bloom and hundreds of schools will contend. This phenomenon will continue to exist for some time to come.
Figure 802.11 wireless network standards and the evolution of Cellular wireless communication technology
A good example of this coexistence is that, as we have seen so far, today's personal communication products tend to develop in the direction of "multiple communication" functions. Multiple communication devices mean multiple radios and connections in a single device. For example, the "Apple" brand iPhone or smartphone in the market has a variety of wireless communication functions such as Bluetooth, wireless Internet access (WiFi) and cellular mobile cellular (cellular). Let’s take a look at today’s 3rd generation mobile phone combination. Bluetooth, wireless Internet access, FM, GPS and more wireless connectivity.
The existence of multiple communication devices poses one of the most direct challenges to testing. Test items increase and test time increases, resulting in an increase in test costs. As a test equipment provider, it is necessary to consider how to optimize the test project and how to improve the test time under the premise of ensuring the quality, and finally achieve the purpose of reducing the test cost.
How to technically support manufacturers' test projects and reduce test operation complexity?
As we all know, standardized testing systems and strong technical guidance are particularly important for manufacturers. So, how do test vendors technically support manufacturers' test projects and reduce test operation complexity? To solve this problem, companies must have the ability to provide a complete test solution. This capability is based on close cooperation with the entire industry chain of chip manufacturers, OEM/ODM and brand manufacturers. Brand manufacturers propose innovative ideas, and OEM/ODM manufacturers turn these innovative ideas into clear and achievable designs. These chip vendors in Silicon Valley offer the core technology competitiveness. According to this, the company provides fast, low-cost test solutions earlier and faster than competitors.
How to deal with the changes and challenges brought about by new communication technologies?
New communication technologies such as 802.11ac, LTE, LTE-A bring new changes and a series of technical challenges. Taking 802.11ac as an example, 802.11ac is the latest Wi-Fi standard, which is at least three times faster than the previous generation Wi-Fi standard and has higher coverage quality. In 2012, leading equipment vendors introduced a variety of access point/router products, and 802.11ac devices began to debut. These solutions are primarily based on 3x3 MIMO implementations with data rates up to 1Gbps (433.3Mbps-80MBW*3). In the 802.11ac standard high-speed data rate (the theoretical maximum rate of 6.93Gbps = 866.7Mpbs-160MBW * 8 MIMO), what technology is supported by such a high rate? At the same time, it also reflects the challenge of the test instrument from another angle. Learn more about the technical features of 802.11ac and make it easier for you to understand the challenges it poses for test instruments.
It is also important to understand the challenges that new technologies pose to test equipment and to have a fundamental understanding of the technological innovations that new technologies bring. Carrier aggregation is just one of the innovations in 4G technology. LTE has 40 or even more defined frequency bands around the world. Therefore, if a smartphone wants to cover all LTE bands in the world, it needs to support up to 10 bands (more than 5 required by 3G technology). This means that more antennas need to be designed for smartphones, and test equipment vendors are required to have more flexible solutions to support more RF tests. Of course, this solution does not just add more RF ports to the test equipment, or provide additional test equipment for expansion. This may only make equipment and testing more expensive. Testers should consider the entire testing environment and links to help customers optimize their solutions and reduce costs to achieve the most competitive solution, which controls costs without sacrificing quality and flexibility.
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