Wi-Fi Performance Challenge of iData T1

Posted on 2020-09-15

In the last episode, we conducted in-depth discussions on the scanning performance of iData T1. I believe you are no longer strange to "fast scanning", "long-time scanning" and "wide-range scanning".
However, the data collected by code scanning still need to be uploaded, so as to achieve an effective data collection. Of course, Wi-Fi is indispensable for the uplink and downlink of data. We will wait and see how excellent iData T1 Wi-Fi performs.
Let's learn some basic knowledge about Wi-Fi performance before the test starts.
How to judge the performance of Wi-Fi?
Generally, when connecting Wi-Fi, we all look at the icon of the signal intensity, that is, the small sign with three arcs and one point. The more arc line, the better the signal.
Its scientific name is RSSI signal intensity, shown in the unit of dBm. Usually, dBm is a negative number, because attenuation will occur in signal transmission, and the transmitted signal cannot be fully received. If it is fully received, the dBm value is 0, so the smaller the negative dBm value, the better the signal.
iData T1 Wi-Fi Performance test

Contrast test of RSSI signal intensity

There are many factors that can affect the signal intensity, not just the quality of the equipment. The performance of AP and whether there is interference from other Wi-Fi sources in the surrounding environment will make the dBm value fluctuate greatly.
So we put iData T1 and another device in the same environment for comparative testing.
Action principle of PA amplifier

It can be seen that iData T1 set with PA amplifier has stronger signal in the same environment.
PA amplifier can effectively amplify signals, allowing iData T1 to easily cope with data transmission when it is far away from AP in bulk storages and large business supermarkets. Signal shielding caused by numerous goods, commodities and even walls; as well as the complex environment interfered by mass Wi-Fi signals.
Make your signal transmission more stable and efficient.
AP Switching Speed Comparison Test
In the environment like bulk storages and large business supermarkets, dozens or hundreds of APs are distributed for network coverage. Operators often need to move quickly in a large range to scan goods or commodity barcodes in each area, which involves frequent switching of AP among equipment.
Next, let's have a look at the roaming delay performance of iData T1 when switching AP.。
Roaming delay is usually in ms or millisecond, 1,000ms = 1s.
Action principle of Wi-Fi r/ac protocol
Apparently, iData T1 has lower roaming delay when switching AP.
This is because iData T1 is intelligently optimized for the Wi-Fi r/ac protocol. In the protocol, the threshold of the worst signal intensity required to switch APs and the frequency of searching for neighbouring APs have been modified.
It enables iData T1 to search for neighbouring APs with stronger signals and connect in time before the Wi-Fi signal intensity drops to the automatic disconnect threshold when it is far away from a single AP.
In this way, seamless connection of iData T1, low delay and more handy AP switching are available.
iData T1 is equipped with PA amplifier. Simultaneously, according to your service environment, Wi-Fi r/ac protocol is customized in "both hard and soft facilities", so that Wi-Fi can satisfy your different usage scenarios and help you easily cope with complex surroundings.