Recently, the ASUS AC66U B1 router that has been in service since 15 years ago has been crashing at full speed**, and it has become more and more frequent recently, and it takes a long time for each reboot to restore the network. I really can't stand the current use needs of TP-Link to start this Feiliu AX5400 XDR5480, before the New Year, it is not a good price of 399 yuan, and the price is successfully insured during the New Year, 20 yuan to talk about comfort.
The main reason: the 5G network has a particularly good performance through the wall, and I hope to improve the network in a small room with a heavy wall. The reason why there is no wifi7 router to choose, all the wifi devices at home are not just needed wifi7, and the main pursuit is cost-effective. The TP-Link XDR5480 plug-in is certainly not as playable as the previous ASUS, but now there are more devices and they are too lazy to toss, and only pursue large and stable tape. 
2 comrades who retired: AC66U B1 is the main router responsible for the main equipment and 5G network, and K3 is used as the auxiliary router to connect the smart devices at home 24G network. It was supposed to be a joint operation, but both of the 2 pieces of equipment were more or less problematic.
To be honest, I was a little shocked when I unboxed, the first time I saw a router with such a large footprint, the accessories are very simple, a body, a power adapter and a network cable.
Originally, the space of 2 routers on the desktop is still a bit insufficient to put this TP-Link XDR5480, and I will find a way to put it vertically on the wall to save some desktop space.
2.5The high-speed port seems to be the telecom 1000M broadband accessed at home now, and the other 4 gigabit network ports can be blindly plugged into the wan lan and set it up by itself.
There's also a turbo button that I value the most, and one key can boost the signal to cover the only small room in my house where the signal was missing before.
It's been a long time since I've used TP-Ling's router, and the interface has changed a lot and is more intuitive than before.
2.4G and 5G networks are still recommended not to be combined, and now smart homes are basically still used2With a 4G network, it will be a little more convenient when connecting and setting up.
The only problem I found in use was in 2Choose between 11 BGN AX Mixed and 11 BGN Mixed wireless mode on a 4G network setup. Under normal circumstances, the latest 11BGN AX Mixed is definitely selected, but when I used my iPhone 13 to connect the router in this mode to re-pair the smart devices at home, the iPhone repeatedly connected to the router and repeatedly disconnected and could not connect to the Internet.
After half a day of repeated study, put 2Changing the 4G wireless mode to 11 BGN Mixed is no problem.
Suddenly, I found that the router interface has an explanation for this wireless mode 11BGN AX Mixed:
Some wireless network cards have older drivers and are connected to 80211AX wireless router, there may be some compatibility issues, please go to the official website of the corresponding manufacturer** for the latest driver.It is estimated that the iphone13 network card has a bit of a compatibility problem with this mode,When encountering a similar situation, you can try to switch the wireless mode to try。
The wireless mode selection also has this hint:
Some wireless network cards have older drivers and are connected to 80211AX wireless router, there may be some compatibility issues, please go to the official website of the corresponding manufacturer** for the latest driver.However, there is no problem that Apple and Android mobile phones, Apple and Android tablets, Mac and Win computers at home cannot be connected to 5G.
There are three more new options in the 5G mode settings, but the router does not come with its own prompts, only after studying it for a long time to summarize the popular science and feedback on the network and get the following conclusions:
A new power-saving technology that can greatly reduce the power consumption of devices without affecting network performance. By putting the device to sleep at defined intervals, TWT technology can reduce the power consumption of the device to a minimum and improve the battery life of the device.
This can be turned on, the mobile phone does not need to sleep, it is easy to disconnect (disconnect) when it is turned on, and some old devices are not compatible with TWT, and they will be disconnected when they are opened.
Difference Between OFDMA and MU-MIMOAlthough OFDMA and MU-MIMO are both technologies for multi-user, turning serial transmission into parallel transmission, there is still a big difference between the two.Can MU-MIMO and OFDMA be used at the same time?Because the two schemes of MU-MIMO and OFDMA do not conflict at all. The joint scheduling of OFDMA and MU-MIMO can allocate resources based on each service (such as web browsing, instant messaging, and other business scenarios).mu-mimo：ImplementationPhysical spaceIt is suitable for the parallel transmission of large data packets (such as **, etc.), which improves the utilization rate and system capacity of multi-spatial streams, increases the rate of a single user, and can also reduce latency. However, the running state is not stable enough and is easily affected by the terminal.
ofdma：ImplementationFrequency domain spaceIt is suitable for the parallel transmission of small data packets (such as web browsing, instant messaging, etc.), improving the channel utilization and transmission efficiency of single-space streams, and reducing application latency and user queuing. The operating state is stable and not easily affected by the terminal.
My own win computer because I have time to play games, so I chose a wired connection method,The corresponding interface router can be set up in the game special port,It is claimed that it can be prioritized** and reduce latency,The network environment of telecommunications can also be so I didn't feel a significant improvement,But it's better than nothing.。
Mainly to test the small room that has been missing the signal before, use a laptop to connect the previous ASUS AC66U B1 5G (80211ac) signal, although the link speed displayed is 866Mbps, but the actual speed test** and upload can only be around 8Mbps, the signal attenuation is too bad, and the Internet experience is too poor.
The network card of the notebook WCN685X supports the WiFi 6E protocol, which is just suitable for the router's WiFi 6 (80211ax）。The displayed link speed is 2882Mbps, the actual speed test** is about 150Mbps, and the upload can achieve the full speed of 40Mbps. I am still satisfied that the 5G frequency band can maintain such speed and latency after penetrating the load-bearing wall, and the overall network experience is very smooth when it is basically not.
By the way, under the test, the balcony leisure space that has just been updated, there is only one non-load-bearing wall between the laptop and the router, and the actual speed test is about 700mbps, and the upload can achieve a full speed of 40mbps. In the future, a family of three can ensure a good network experience during their leisure time in the sun.
The phone was tested with the new OnePlus 12, and the OnePlus 12 supports Wi-Fi 7 (802.) at the highest11be), so it should be no problem with this wifi 6 router. Use the 5G frequency band at close range for wireless speed testing, and the upload and ** can basically run up to the upper limit of my home telecom gigabit broadband.
In addition, in the settings interface of the router, I also found that there is a dual WLAN network acceleration setting, which seems to not be supported by all mobile phones (I use iPhone13 iOS 167.Version 1 does not, OnePlus 12 with Color OS 140 just has this adaptive function).
Turn on the feature with OnePlus 12 and connect the router at the same time4G and 5G band network, you can see the logo of dual wifi connection on the status bar of the mobile phone, and the general experience of the change in network speed does not seem to help, the main function should be to maintain the stability of the connected wireless network and reduce the role of latency.
After a few days of use, the few goals that I wanted to improve before were basically achieved:
Resist load-bearing walls and complete the network coverage of small rooms can be used smoothly; With a large amount of 2The access of 4G smart home devices is running normally and stably; There are more and more networked devices, and now they are too lazy to toss, the main thing is to pursue stability, sufficiency, and cost performance. According to the current needs and equipment, the only disadvantage of this TP-Link XDR5480 is that it is too large and occupies too much desktop space. The next time I replace the router, I will have to wait until most of the main devices are updated to the WiFi 7 protocol or when the telecom broadband is greatly accelerated, and the current TP-Link XDR5480 is a cost-effective choice that is more suitable for my current home use scenarios.