Mass Transit - 32

Not all

WIRELESS

is created EQUAL
Newly available spectrum in North America is also
bringing a new era in transit communications.
By Pedro Bontempo Elmadjian, contributor

M

ODERN TRANSIT OPERators are looking at the
automation and Internet
of Things [IoT] trends
with great interest.
There is the promise of
shorter headways using
automated trains for improved capacity. IoT sensors and
closed-circuit television (CCTV)
could enable greater safety, as well
as preventative, pro-active maintenance. And, meanwhile, customers' appetite for high-speed,
on-board services only grows.
Unfortunately, all of these require
safer, more secure and more robust communications systems
than exist today.

32 |

The good news is that new radio spectrum in North America is
also bringing a new era in transit
communications, which will see
private LTE networks providing
a whole new platform for transit
automation and improved customer services.
Modern transit and suburban
rail communications systems
have tended to proliferate over
the years. As new applications
were layered over old, however,
each one adopted its own proprietary approach - whether it was
signaling, emergency calls, onboard communications, telemetry
or digital signage. All of which has
increased complexity and opera-

Mass Transit | MassTransitmag.com | JUNE 2019

Most Wi-Fi
networks
in place on
metros are
incapable
of carrying
both safetycritical and
non-safetycritical
traffic.

Nokia Networks

MOST WI-FI networks in place
on metros are incapable of
carrying both safety-critical
and non-safety-critical traffic,
due to limitations such as a
lack of sophisticated quality
of service (QoS) support and
shortcomings with mobility.

tional costs. So far, the comfort of
relying on the tried and true has
outweighed the cost of converging
these systems into one.
Part of the convergence problem has been the mix of wireless
and wired systems. There has been
increasing interest in wireless systems in recent years, such as Global
System for Mobile Communications - Railway (GSM-R), WiMAX
and Wi-Fi, which have been used
for signaling, train-to-ground
and onboard customer communications. Unfortunately, none of
these systems is robust enough to
meet all the needs of transit and
rail operators. Instead, they have
tended to add additional layers and
increased the complexity and cost.
Despite these issues, many
operators would probably put
up with this heterogenous mix
of communication systems if it
weren't for the move to automa-


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Mass Transit

Table of Contents for the Digital Edition of Mass Transit

Ad Index
Editor's Notebook
People & Places
TTC faces a forced reset
Special Report: The state of passenger rail
Making a safe and comfortable stop
Not all wireless is created equal
Video aids agency monitoring efforts
Best Practices
Products
Classifieds
Social Hubs
Rail Product Guide
Mass Transit - 1
Mass Transit - 2
Mass Transit - 3
Mass Transit - 4
Mass Transit - 5
Mass Transit - Ad Index
Mass Transit - 7
Mass Transit - Editor's Notebook
Mass Transit - 9
Mass Transit - People & Places
Mass Transit - 11
Mass Transit - TTC faces a forced reset
Mass Transit - 13
Mass Transit - 14
Mass Transit - 15
Mass Transit - 16
Mass Transit - 17
Mass Transit - 18
Mass Transit - 19
Mass Transit - Special Report: The state of passenger rail
Mass Transit - 21
Mass Transit - 22
Mass Transit - 23
Mass Transit - 24
Mass Transit - 25
Mass Transit - 26
Mass Transit - 27
Mass Transit - 28
Mass Transit - 29
Mass Transit - Making a safe and comfortable stop
Mass Transit - 31
Mass Transit - Not all wireless is created equal
Mass Transit - 33
Mass Transit - 34
Mass Transit - 35
Mass Transit - Video aids agency monitoring efforts
Mass Transit - 37
Mass Transit - Best Practices
Mass Transit - 39
Mass Transit - 40
Mass Transit - 41
Mass Transit - Products
Mass Transit - 43
Mass Transit - 44
Mass Transit - Classifieds
Mass Transit - Social Hubs
Mass Transit - 47
Mass Transit - 48
Mass Transit - Rail Product Guide
Mass Transit - R2
Mass Transit - R3
Mass Transit - R4
Mass Transit - R5
Mass Transit - R6
Mass Transit - R7
Mass Transit - R8
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