Streaming Media
Wireless telecommunications is one of the few
industries to have thrived since the COVID-19 pandemic engulfed the world. At a
basic level, many of us resorted even more than before to using
mobile devices to communicate with friends and family, stream video, or
work from home. Government track-and-trace systems to curtail the virus are
dependent on our reliance on mobile. More than that, though, 5G is
seen as instrumental in leading economies out of the dire straits
many are in.
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"To the extent there was any doubt about
the importance of connectivity, that doubt has been completely
erased," says Alex Rogers, EVP and president of Qualcomm Technology
Licensing in a video interview on the company's blog. "While
broadband has done well, you need connectivity that solves all the
problems. You need it to be ubiquitous, reliable, you need throughput, speed,
and security. You will see 5G become essential everywhere. It's going to be in
very high demand."
Despite the pandemic and the recession it spurred, 5G
is still on track to become the quickest generation of wireless cellular
technology to be widely adopted. According to Omdia's projections, 5G will
have nearly 2 billion subscribers by the end of 2024, 6 years into the cycle
versus 8 for 4G LTE.
Globally, there are now 82 5G commercial networks, a
number that's expected to reach 206 by the end of 2020, per TeleGeography.
In addition, there are more than 100 commercial 5G device models available
worldwide, according to the "Ericsson Mobility Report" from
June 2020. Omdia projects that 5G connections will reach 238 million
globally by the end of 2020, of which North America will account for
10 million, spanning seven network rollouts.
The number of 5G connections in North America
will hit nearly 300 million by 2024, as LTE continues a
slow but steady decline.
"Globally, 5G remains the fast-growing generation
of wireless cellular technology ever, even as the world is gripped
with a pandemic," says Chris Pearson, president of industry
trade association 5G Americas. "In North America, we are seeing consistent,
strong uptake of new 5G subscribers as new devices have been released
that can take advantage of low-band and millimeter wave [mmWave] frequencies.
At the same time, new network capabilities are being added."
At the peak of the lockdown, mobile networks held up
remarkably well to the strain of additional data traffic as
work-from-home data usage spiked dramatically. For instance, AT&T
reported a 22% increase in its core network traffic and a 30% increase in wireless
voice minutes. The new combined T-Mobile/Sprint saw mobile hotspot usage spike
60%, while tethering was up 57% for T-Mobile and 70% for Sprint.
These increases in traffic seem to have persisted. OTT
streaming has soared as we have stayed at home, while COVID-19 has forced
a rise in working from home and the need for additional
bandwidth.
"Work from anywhere is going to be the new normal,
not just from home," Rogers says. "Companies are already
evaluating [how] to push the enterprise out to a wireless connected
environment."
Nokia reports that peak traffic "normalizes" at
25%–30% above pre-pandemic levels and that aggregate traffic volumes continue
to be more than 25% over pre-pandemic levels. A survey from IBM found that
54% of people want to continue working from home even after the
pandemic has passed.
"There is no doubt COVID-19 has had a huge impact on
our industry, however, in the midst of the pandemic, Verizon has been
able to maintain and, in some cases, accelerate its 5G deployment by
being nimble, flexible, and downright scrappy," says Heidi Hemmer, VP
of network engineering at Verizon. This has been possible by focusing efforts
on 5G antenna attachments where social distancing has been easier to
maintain and by taking advantage of the dramatic drop in road traffic to extend
the company's hours of operation when working outside on fiber trenching
and laying.
"Our engineers conducted virtual site walks with
municipalities, providing pictures, videos, and access to our engineers
remotely, and we worked with municipalities to deploy digital permitting
solutions (to submit applications for licensing without entering an office),"
says Hemmer.
So 5G has moved from hype to reality. Nonetheless, as GSMA
pointed out in March, 4G is still king. Its "The Mobile Economy 2020"
report finds that 4G will continue to grow, increasing to account for 56% of
global connections by 2025.
In addition, consumer devices still lag behind 5G network
rollout, curtailing usage. Most mobile devices in the market are not
5G-enabled, according to Ampere. In fact, there is not currently an iPhone
model that supports 5G—despite 57% of U.S. internet users owning an Apple
smartphone—as reported in Ampere's Q1 2020 consumer survey.
"Currently, devices which are 5G-enabled are also
higher cost, which will also limit the short-term uptake and wider market
uptake," says Ampere research manager Daniel Gadher. "However, as
with any new tech when it first launches, prices will be high due to low
economies of scale for manufacturing. With the network coverage having
been scaled up nationwide, it will lead to greater scale, and prices of devices
should come down, as long as consumer demand is there, supporting wider
uptake."
NSA to SA
All operators initially launched non-standalone (NSA)
network architectures, which combine 600-MHz 5G radio access networks (RAN)
tied to 4G LTE equipment at the core. The next step is to migrate to standalone
(SA) networks, which boast 5G in both RAN and the core.
In North America, the first to reach this mark is T-Mobile,
fueled by its completion in April of the merger with Sprint, and in
partnership with Cisco, Nokia, and Ericsson. T-Mobile says its new 5G SA
network has been tested to deliver up to 40% lower latency and
20%–30% improvements in download and upload speeds over prior
performance.
T-Mobile has passed AT&T to become the nation's second
largest carrier and to claim the "5G coverage crown," boasting that
its 5G network is more than two times larger than AT&T's and more than
10,000 times that of Verizon's.
In the near-term, T-Mobile explains that SA allows it
to unleash its entire 600-MHz footprint for 5G unhindered by using mid-band LTE,
with a signal that's able to cover hundreds of square miles from a single
tower and go deeper into buildings than before.
Verizon and AT&T suddenly find themselves playing
catch-up—but not for long. Verizon plans to start moving traffic onto its new
5G SA core in the second half of this year, with
full commercialization in 2021.
"Verizon was the first carrier in the world
to launch a commercial 5G mobile network with a commercially
available 5G-enabled smartphone in early April 2019," asserts Hemmer.
"To date, we have launched our 5G Ultra Wideband network in parts
of 36 cities using mmWave spectrum—a keenly differentiated
experience from low-band 5G—and we plan to reach 60 markets this
year. Our Dynamic Spectrum Sharing work is on track, which will pave the way
for the most efficient use of spectrum to deploy the nationwide coverage
layer of 5G on our other spectrum assets. We will launch 5G nationwide by
the end of the year.
"We have also completed successful trials of our 5G SA
core. Built with a strategically different architecture of virtualization
from the ground up, this will provide the foundation [that] a
non-cloud native core simply will not support," says Hemmer.
"Our strategy of deploying 5G in both sub-6 (5G)
and mmWave (5G+) spectrum bands will provide the best mix of speeds, latency,
and coverage that are needed to enable revolutionary new capabilities to fuel
5G experiences," says Chris Sambar, AT&T's EVP of technology
operations. "Our competitors are still working to provide that same
mix, which for them could take months or even years. What we offer is
available to consumers and businesses today, and we're not slowing down."
AT&T announced in its Q2 2020 financial results an
additional $1 billion invested to purchase 5G spectrum, "showing its
commitment to growing its 5G coverage nationwide," according to
Gadher. "Typically, the major U.S. carriers have focused deployment in
highly populated major cities, with rural deployment being slower."
3GPP Release 16 and SA
SA architectures are based on the latest release from the
standardization body 3GPP. Release 16, finalized in March, paves the way for
deployment of fully virtualized networks using 5G SA cores and the
facilitation of edge computing, network slicing, and massive IoT.
Release 16 introduces enhanced ultra-reliable low-latency
communication (eURLLC) to deliver millisecond latency,
time-sensitive networking, and improvements to
"high-power high-tower" transmissions for supporting higher
mobility and better coverage of terrestrial TV. Also introduced
in Release 16 is high-reliability 5G positioning, which enables a
broad set of 5G IoT use cases, such as asset tracking.
According to a recent Nevion global survey
of broadcasters, 82% believe that cellular networks like 5G will
eventually replace traditional broadcast distribution as the preferred way
to access TV content. More than a third (37%) expect this to happen within 2
years.
Looking further out, 3GPP's Release 17 (due in
summer 2021) includes enhancements to NR Broadcast and Multicast, a mixed
mode for enabling dynamic switching between unicast and multicast, both in the
downlink and the uplink. It will also feature 5G NR-Light, targeting
new efficiencies for lower-complexity devices such as industrial
cameras, higher-end wearables, and lower-tier smartphones.
Future Applications
Applications for 5G capabilities are gaining ground,
although most remain experimental or theoretical. 5G Americas' Pearson suggests
that 5G live streaming at sporting events or concerts could bring "instantaneous
feedback from thousands of mobile device users around the world in new ways to
bring a mobile crowd into the experience."
For individual consumers, Hemmer says Verizon's
existing 5G Ultra Wideband running on mmWave spectrum has already achieved peak
speeds of a gigabit or more, allowing n enhanced, immersive NFL experience
at the Super Bowl; production partnerships with Disney; enhanced gaming
with partners such as Bethesda Gaming; and more.
"Many of the use cases we are seeing emerge are with our
business partners," Hemmer says. "Corning is implementing smart
manufacturing solutions. We recently lit up the first 5G-enabled hospital with
Verizon 5G with the VA at their hospital in Palo Alto and plan to test how
5G could enhance AR/VR applications for medical training [and] enable
telemedicine and remote patient monitoring."
Ericsson president and CEO Börje Ekholm summed it up
neatly in an online keynote: "While 4G gave us the app economy,
5G will be the greatest open innovation platform ever."
That is predicated on 5G SA cores, which T-Mobile
declares to be the future of wireless connectivity, bringing 5G
closer to reaching its true potential, with faster speeds, lower latency,
and massive connectivity. "SA, especially when coupled with core network
slicing in the future, will lead to an environment where transformative
applications are made possible—things like connected self-driving vehicles,
supercharged IoT, real-time translation … and things we haven't even
dreamed of yet," according to T-Mobile.
Yet not all 5G standalone cores are created equal. Hemmer
says, "Not all cores are designed to be able to fully take advantage
of the more robust technologies such as network slicing and Mobile
Edge Compute. By building the Verizon 5G core with cloud-native containerized
architecture, we will be able to achieve new levels of operational
automation, flexibility, and adaptability."
In the interview with Qualcomm's Rogers, he says the
defining difference between 4G and 5G is not throughput or capacity but
(with the new 3GPP releases), a drive into verticals and different
industries: "Vehicle-to-vehicle and vehicle-to-X is not possible
without standards. Smart buildings, smart cities, ports
utilities, [and] other infrastructure connected through 5G and the
management of these facilities will be revolutionized based on 5G.
"As you push computing to the edge of the
network," Rogers adds, "you are going to see new form factors
and XR, augmented and VR experiences using new devices we've never really
seen before."
A 5G SA cloud-native virtualized core, in combination
with built-in AI/machine learning, will enable the dynamic allocation of
the appropriate resource (network slicing). It will also allow for
automated network configuration changes, including the ability to scale
up or scale down network function capacity to provide the right service levels
and network resources needed for each use case.
For example, network slicing is expected to play an
important role in providing guaranteed QoS, which is critically important in
terms of bandwidth and latency and is required for high-value
content production such as sports. Operators can take advantage
of network slicing to offer differentiated network services
for content production.
As deployment continues and the ecosystem builds up around
the technology, video applications will evolve. Some use case examples provided
by Verizon include rendering high-end gaming graphics on low-cost,
portable devices; creating 360 degrees of sound for a headset, allowing
the user to fully experience surround sound in a virtual, mobile environment;
and developing dynamic 3D image recognition to overlay virtual information on
real-world objects in near real time.
The world is going to need these capabilities as it
digs itself out of the COVID-19-induced economic hole and builds a stronger
economy. Indeed, telcos are expected to be pivotal in driving the global
economy forward as the world emerges from the initial phase of the
pandemic.
"[Telcos] will be key in enabling a new digital
society," says ABI Research. "Beyond the obvious conclusions that we
are likely to see, including more remote working, more virtual meetings, and
more virtual teams, … a raft of new solutions could accelerate GDP
growth and all will require a robust level of support from the telco
community."