EuMW 2017 Flash Seminar: A 5G “Out-of-the-Box” Design Validation Experience
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Good morning, everyone. My name is Randy Becker. I’m the director of our 5G testbed program. I’m from Santa Rosa, California which is about
an hour north of San Francisco. This is where our headquarters is located
and where we do a lot of the design and development of our signal generators, spectrum analyzers,
and network analyzers along with software. Today I’m going to talk about 5G–some of
the trends, some of the things going on in the industry, and how this relates to the
testing of the next generation 5G base stations. First off, we can see on the left, there are
a lot of the industry drivers, a lot of data growth in the industry, a lot of devices going
to be connected, a lot of new applications. People are starting to use the network in
new and different ways, and this is going to lead to the things we need to think about
for 5G. So, how are we going to get there? For 5G, people are proposing hundred times
the data rates, a thousand times the capacity, a lot higher densification, lower latency,
high reliability, and even more energy efficient networks. These are things you can easily find if you
do a little search on Google, but the next question might be how am I going to actually
test these new devices? What are the things that I need to think about? How will you get there? How will I test these new devices with these
new technologies? How will I keep up with the standards as they
evolve? Just like LTE, 5G will go through many iterations
over the next few years. How will I scale my SISO solutions to test
beamforming and massive MIMO? How will I test at the higher frequencies,
like microwave and millimeter wave? Things are quite a bit different than they
are at sub 6 GHz. How will I verify the performance of my DUT
when at the higher frequencies there’s no longer antenna connectors available since
the RFICs are mounted right to the antennas? Then, how am I going to afford to do all of
this with limited Opex and Capex budgets? Lastly, I need to get all of this done and
be the first to market so I can be ahead of my competitors and to win in that space. There are a couple of key industry insights
we can get by looking at a couple of things. The first, which I think is no surprise, if
we think about our cell phone bill. Nobody wants to pay more for their cell phone
bill, right? Everybody wants higher data rates but nobody
wants to pay more for their cell phone bill. This is ultimately rolling up into the NEM’s
having extreme cost pressures, and having lower priced devices. This is going to drive down the cost of test. When we think about the test solutions that
we have to offer, they have to be in line with the cost of the equipment that we’re
testing. There’s also this concept of collaborating
to market. If we think about 5G, it’s a very complex
technology. You, as the people designing the next generation
base stations, have core competencies in certain areas, and that’s where you’re going to be
able to provide value and innovate. There are lots of other challenges that you
need to solve, and Keysight is uniquely positioned to help you solve many of these challenges
that you’re going to face. Additionally, the RAN is becoming ever more
complex. We have higher frequencies, wider bandwidths,
and even new modulation schemes to think about. Having flexibility is going to be very important. The standard is going to continue to evolve. It’s going to add new features, new capabilities,
and we need solutions they will be able to scale to handle those. Lastly, how are we going to make these tests
over-the-air? This is unchartered territory. We need to be able to figure out how to do
this without using antenna connectors. Now we’ll look at some of the specific 5G
test challenges, and how this relates to next generation networks. On the far right, I’ve diagrammed a high-level
overview of a 5G base station. We’ll just take a quick look. See here that the base station has, instead
of just a couple of channels, has many channels that could be used for beamforming or even
massive MIMO. One of the particular challenges is how we’re
going to make those tests over-the-air. Additionally, we might need to think about
fading; how to simulate these new environments to determine if our device under test is working. Then, if we look at the other end of the remote
radio head, the connection there is usually some kind of optical connection over some
fiber. It might be useful for testing at this device
plain as well. After that, the signals make their way back
to the core network where solutions are being implemented more and more using cloud technologies. There’s a lot of different test challenges
when we look at the at the new base station architecture. At Keysight, we’re doing a couple of different
things. We’re designing a new 5G testbed, which is
the foundation for testing and generating signals that will communicate with the base
station. The base station fundamentally is Transmitting/receiving or over RF, and we need the solutions that are able to do that. I’ve highlighted here in blue on the left,
you can see some of the other challenges that I talked about. The front haul, massive MIMO, channel emulation,
OTA. Keysight has specific programs in these different
areas, but what I’m talking about today is specifically around the test beds. Here’s a quick look at our next-generation
testbed for 5G. This is a modular approach, and this leads
to several key things that we’ll need in the coming years: a solution that is very scalable,
very flexible, and also very upgradable. These buttons are a Little..I think I’m too
far away from the the machine. I won’t say too much about this, but you can
see some of the important points below. If you want to get details about this, we
have a booth over there on the end where we have both our microwave signal generator and
microwave signal analyzer set up, and we can go through the details at a later time. We also have software solutions: we have a
wide array of software from early prototyping all the way through manufacturing for 5G,
for custom OFDM, pre 5G, and even New Radio. What we’d like to do is wrap all this together
into specific solutions for you; to integrate all of the hardware together into solutions
for specific tasks. Moving more towards software-defined solutions
that can operate in the cloud. The next question you might ask is well how
am I going to be able to afford this next generation test equipment? Keysight has a number of different things
available. We have flexible financing, a number of different
ways to to obtain the equipment. We also have Technology Refresh programs,
where you can move your 4G platforms to 5G. We also have some get-to-market faster programs
in place, like training, productivity assistance, and so forth. Lastly, Keysight offers the best combination
of hardware, software, and people with the right expertise to give you the insights to
get your products designed first and to market fastest. I’m going to stop there, but I’ll give you
one more sneak peek at some of the things that we’re demoing at the testbed at the end
of the at the end of the booth. Just one screenshot of some of the measurements
that we’re making. Here you can see we have a number of different
measurements we’re making simultaneously on a pre-5G signal. In the next one, we’re showing a simultaneous
eighth component carrier demodulation where we’re looking at the constellation diagram
spectrum and a number of the different EVM metrics. We’re also doing this with a phased array
antenna that we’re actually scanning in real time where we can get the antenna plots. We’re not showing that on this screen, but
if you want to see that you can come to the booth at the the end of our section. Thank you so much.

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