Test the MU-MIMO effect with the 10GbE port of the Netgear R9000

Test the MU-MIMO effect with the 10GbE port of the Netgear R9000

Spread the love

Netgear R9000 because there is a 10G optical port, so in the test of two 2x2mimio receiving devices can break through the gigabit without being limited, do not need to use 2 LANs like other gigabit port router, and also not sure whether the interface between the switch chip and the CPU is limited by the gigabit rate. This time focus on using 2x2mimo receiver to do the test.

网件R9000 MU-MIMO测试

Netgear R9000 from the online disassembly article learned that the CPU model is Alpine AL314, quad-core 1.7GHz, Cortex-A15 architecture. Compared to the Cortex-A53 architecture used in the mid-range and high-end now seems a bit backward. But the performance is not behind? Find a comparison chart.

ARM Cortex A53 Versus Other Cortex-A Series Processors 01

I don’t know the meaning of these scores, but I know that Alpine AL314 has a 10G network card integrated in this CPU, so I think this CPU is very strong. Any objections to what I said? I’ll continue if no one objects. Netgear R9000 wireless chip a full set of Qualcomm solutions, including 60GHz, its 5G chip is QCA9984, in the past tested Netgear R7800, Asus ACRH17, TP’s WDR8500 is also it.

I bought the cottage optical port intel 10 Gigabit network card has not recognized bad, at that time 199 yuan seemingly, idle fish to buy on so there is no then, it became junk. So I want to use the electric port NIC to the electric port of the Netgear MS508M switch, and then use the switch’s 10G optical port to the optical port of the Netgear R9000.

A simple link diagram is as follows.

网件R9000 MU-MIMIO测试

Let’s start with the LeTV phone, buy it to test 60GHz, unfortunately, does not support the link, found that its 5G is 433Mbps speed, the same as the Xiaomi 5, so LeTV MAX Pro (model X910) Xiaomi 5 together as an appetizer, warm up. Test results are as follows:

R9000 MU-MIMO测试

From the data in the chart above you can see that this is a good MU-MIMO effect, Xiaomi and LeTV X910 are 1x1mimo 433Mbps rate, the highest wireless speed of a single unit in about 330-340Mbps, if it is SU-MIMO, no matter how many units, the total wireless speed will not exceed this value of a single unit. The above chart measured the total wireless speed of the R9000 is 591Mbps, because of time, I did not test separately off the MU-MIMO (SU-MIMIO) data, such as want to understand or to go to the previous test of that, in and detailed data, although old, but also very informative, look at the R7800 data can be.

In order to make the figures a little more intuitive, I drew the following graphical representation.

MI5+X910 02

If with the increase in the number of receiving devices, whether it is MU-MIMO or SU-MIMO, the total wireless speed of the wireless router will drop.

Warm-up is finished, now to prepare to test two 2x2mimo receiving devices, take the Xiaomi 4C, I have two, one as a backup, in case of bad can also immediately top not waste time, usually only in the dismantling of the simple test with. The test results of the two Xiaomi 4C are as follows.

R9000 MU-MIMO测试

As seen above, at the beginning of the two wireless speed is not high, after 4 seconds both phones increased to more than 500Mbps speed, the first 4 seconds can be seen as SU-MIMO, the speed of the above chart network cable has been a very good information feedback. Due to the 10G optical port breakthrough gigabit bottleneck, only two total speed was measured in the past is more than 900Mbps, and now the total wireless speed reached 1110Mbps.

So, now add one more in to test together, how will the effect be? Add a Xiaomi Note 3 it, also 2x2mimo, the effect is as follows.

R9000 MU-MIMO实测

After connecting three units, the total wireless speed of the Netgear R9000 is 905Mbps, and there is a significant difference in the wireless speed of the three units. The single 2x2mimo 866Mbps warp-free speed is about 660Mbps, and the total speed of the three units at this point is more than 200Mbps higher than the 660 when a single unit, which I think is a MU-MIMO effect. However, the test data of these three devices, it often takes many tests to have this good result, 821 this result is not easy to come by, may be the matching of three devices is much more difficult.

A simple schematic is as follows.

R9000 MU-MIMO测试

The above receiving devices are Qualcomm chips, some people suspect that between different brands will not be able to make MU-MIMO effective. No, the test has shown that different brands are compatible. I also want to know whether the Intel AX200 in WIFI5 can support MU-MIMO, so here are four computers with AX200 to test, (I used to test the wireless computer a lot, about more than 10, large, small, medium and micro have, lazy back and forth to install the network card so there are multiple computers will be very convenient)

Two AX200 test results.

R9000 MU-MIMO测试

As you can see from the chart above, the total speed of the Netgear R9000 is 1115Mbps when connected to two AX200s, which is very similar to the test results of two Xiaomi 4C phones.

Three AX200 test results.

R9000 MU-MIMO测试

Three results: 822Mbps, and the first three cell phone test is also very close. This result is also the best result after many tests, it’s not easy to come by!

How about adding one more, can four 2x2mimo devices support MU-MIMIO, four AX200 test results are as follows.

R9000 AX200 Mu-MIMO

Four units resulted in 697Mbps, so as stated earlier, the effectiveness of MU-MIMO decreases significantly as the number increases. Not just from this test, but older tests in the past also verified this. 4 devices at this point in time have little meaningful speed, not much improvement. To summarize the data for two to four units.

R9000 4x AX200 02

As long as there is a boost, I would also think that there is a MU-MIMO effect. That’s my opinion! Three 2x2mimo definitely support MU-MIMO, with four, I’m not sure.

Now to test the Apple SE2, when I know it supports WIFI6, the heart will default it will support MU-MIMO, now test whether the Apple SE2 in WIFI5 support MU-MIMO. to test whether it works, first to have a reference, take Xiaomi 10 and Xiaomi 4C test, and then take the Xiaomi 4C phone away, put the Apple SE2 in Xiaomi 4C position.

Xiaomi 10 + Xiaomi 4C test results are as follows.

R9000 MU-MIMO 小米10

The total wireless speed of the two phones from the above chart is 1141Mbps, which is much higher than 660Mbps, which obviously supports MU-MIMO.

Xiaomi 4C took away and replaced with Apple SE2, SE2 + Xiaomi 10 test if the following.

R9000 MI10+SE2

From the above chart to see the result is 645Mbps, the total speed of the two only 645Mbps, IPhone SE2 is definitely not support MU-MIMO, Xiaomi 10 phones do not support, when the device does not support MU-MIMO transmission together, MU-MIMO will fail, it is equivalent to SU-MIMO. understand? If you do not understand, I do not know how to explain.

To summarize the diagram of Xiaomi 10 and Apple SE2, the following diagram can also be simply understood as MU-MIMO and SU-MIMO, respectively.

R9000 MI10+SE2 02

The conclusion is that the Apple SE2 does not support MU-MIMO under WIFI5, because it is the same hardware as the IPhone 11 so concluded that the IPhone 11 also does not support MU-MIMO under WIFI5, in WIFI6 also does not support, when the Xiaomi 10 and Apple SE2 connected to the WIFI6 wireless router tested is also not supported. In addition to the actual test, the Internet found this paragraph.

“Samsung s10, note10 series, iPhone11 series are equipped with bcm4375 28nm 2tr @80mhz Wi-Fi6 network card, up to 1.2Gbps, but note that iPhone11 as of iOS13.4 still does not support one of the key features of MU-MIMO, can seen as a fake wifi6”

There is MU-MIMO under WIFI6, I used Xiaomi 10, AX200 network card also tested, temporarily did not find support for the future need to continue to do tests on the WIFI6 MU-MIMO. This is a test of MU-MIMO in WIFI5, so this is the end.

The name of the test did not do three 2x2mimo devices now to make up, found to be supported, but it is more difficult to have good test results, four, then some reservations. Overall, it is not practical, because the receiving device also needs to support MU-MIMO, and the location of some requirements.

This article hopes to give you some knowledge of MU-MIMO.

Leave a Reply

Your email address will not be published. Required fields are marked *