LEVERAGING PUSH-TO-TALK/MULTIMEDIA COMMUNICATIONS AND HIGH SPEED AND
CAPACITY NETWORKS FOR MISSION-CRITICAL INCIDENT GROUND COMMUNICATIONSTechnology advancements are not only improving people’s lives, but arealso making work easier in many industries. As companies embrace
digital transformation to thrive in this ever-changing world, medicalorganizations can turn to digitalization to enable easier access tohealthcare, improve efficiency and decrease operational costs.
Besides providing mission-critical medical services during the emergencies of weather disasters, earthquakes and viral pandemics, suchas the novel coronavirus that are becoming more frequent and severe
every year, the medical industry is also enhancing operational capabilities with digital transformation for the future of healthcare to ensure
healthy, prosperous lives for all.
CASE STUDY WAVE PTX

However, the complexity of the universal health system and the medical
fee structure in Japan have caused the efforts for digitalization to beslow and challenging.
To support the healthcare organizations in their digital transformation
journey, the Wave PTX Broadband push-to-talk network service fromMotorola Solutions provides a unified ecosystem combining voice,software, video and services designed to improve communications andresponse. This rich multimedia system coupled with high speed andhigh capacity networks can truly transform the medical field.

We reproduce the insightful discussions between Nobuyuki Koike, Director of Mobile HospitalInternational, and Dr. Syuji Kitahara, Specially Appointed Associate Professor of Tokyo Women’s
Medical University, on the possibilities for the future of medicine.

Mobile Hospital International, Inc.
Mobile Hospital International was established in 2010 as a general incorporated association with the aim ofestablishing a “rescue network based on hospital ships,” which is essential for disaster medical care in Japan, amaritime country. In 2011, it became a public interest incorporated association, and has been conducting lobbying
activities such as policy proposals in order to own the first hospital ship in Japan after World War II. In recentyears, it has been involved in a number of activities, including the port call of the U.S. Navy hospital ship Mercy toJapan and cooperation with the Tokyo 2020 Olympic and Paralympic Games.

NEW PUSH-TO-TALK MULTIMEDIA COMMUNICATION THATREQUIRES NO LICENSE AND IS READY TO INSTALLKoike: Thank you very much for taking thetime out of your busy schedule to talk with
us today. Digitalization in medicine is one ofthe key trends of my research, so I have been
looking forward to talking with you.
Kitahara: It is my pleasure to meet you.
As a member of the board, Mobile HospitalInternational’s mission is to introduce hospital
ships to support medical care in the disasterprone areas near the sea when a disasteroccurs.

Mr. Nobuyuki Koike
Director,
Mobile Hospital International, Inc.

Koike: Yes, we were preparing an emergency
boat for volunteers to transport heatstroke
victims, who would be watching the games
that were being held on the coast, safely
to a hospital in Toyosu. However, we did
not implement the project as the event was
eventually held without spectators. While anambulance would take almost an hour to reachthe hospital depending on the congestionof the roads, a boat has the advantage ofbeing able to transport the patient within
10 minutes. Although we were not able to
make a mark at the Tokyo 2020 Olympic andParalympic Games, we remain hopeful of
this opportunity to build a momentum for theintroduction of hospital ships.
Kitahara: I heard that you were planning toconduct a demonstration test of a broadband
push-to-talk communication system on theemergency boat. Could you elaborate more on
this system?

Dr. Syuji Kitahara
Project Associate Professor,
Institute of Advanced
Biomedical Research,
Tokyo Women’s Medical University(Medicine)

CASE STUDY WAVE PTX

Koike: It is the WAVE PTX multimedia
communications from Motorola Solutions
which can capture video and transmit it in realtime. The purpose of this system is to capture
the status of the patient being transportedand share the information with the emergencyboat, hospital and fire department. Currently,
the ambulance and the fire department areconnected by the radio network, but thehospital does not have radio devices and usesa smartphone network. With the WAVE PTX
multimedia communication, we can centralize
the information transmission and instantly
share audio and video files at the push of abutton.
Kitahara: It is noteworthy that we can sharemultimedia information now. At the present
moment, ambulance personnel can only
verbally provide information to the hospital,such as the patient’s vital signs and level ofconsciousness. If the doctors at the hospitalcan remotely monitor the patient’s conditionin the ambulance, the probability of saving thepatient’s life drastically increases. Even if theyreceive only one image from the ambulance’s
ultrasound machine, they are enabled to takethe appropriate measures. Do I need a special
device to use WAVE PTX?
Koike: Of course. While there are dedicatedeasy-to-use devices which you can deploy,
you can also download the app on yoursmartphone or tablet and use your own device
as a WAVE PTX terminal. Another majoradvantage of the WAVE PTX is that it is easy
to install and has a low setup cost. The systemallows hundreds of users to communicate
and map their locations using GPS. There isno need to obtain a radio license, so anyone
can use it right away. Our initial plan wasto conduct a demonstration test on theemergency boats for the Tokyo 2020 Olympic
and Paralympic Games, in anticipation of theintroduction of the system on the hospital
ships, which we are promoting.

PAGE 2

A STABLE AND RELIABLE SYSTEM CAPABLE OF INSTANTCOMMUNICATION DURING A LARGE-SCALE DISASTER
Kitahara: The cost of introducing the Wave
PTX service is low, and anyone can use it
easily, which is a big advantage. One of thereasons why the shift to digital transformation(DX) in medicine is slow is due to the financial
burden of high installation costs. Large
hospitals that are able to invest in the latest
equipment are actively working on DX, but
the smaller the hospital, the more difficult it
is to digitalize because the budget available islimited. Smaller clinics cannot handle this highcost unlike when they were digitalizing their
medical records. It would be difficult to change
the analog operation of healthcare unless wepromote DX not only in large hospitals but
also in the clinics that patients visit on a dailybasis. We need to stop sending and receiving
important information via facsimile which haspoor readability. A system such as WAVE PTX,
which can share patient data such as video
files and images with the ambulances andother clinics at the cost of a small investment,
can be further introduced to private clinics
as the next step for healthcare DX. It seems

CASE STUDY WAVE PTX

to be a highly reliable communication systemsince it has been tested in emergency
transportation.
Koike: Some people think that a smartphone
suffice if all you want to do is send voicenotes and images, which in this case you
do not need to use WAVE PTX. However,in the event of a large-scale disaster, there
is a high possibility that base stations getdamaged or power being cut off, and as aresult the cellular network and smartphones
cease to operate. With WAVE PTX, stablecommunication can be ensured since it won’t
be affected by the risk of communication
failures that may occur during such disasters.
Kitahara: Smartphones are certainly aconvenient tool, but it is risky to solely rely onthem for all communication in the healthcare
operation. We cannot put patients at risk incase there is a carrier communication failure
during an emergency.

Koike: You are absolutely right, and theWAVE PTX has been highly evaluated by anincreasing number of companies and local
governments which have introduced this pushto-talk multimedia communication system thatcombines the convenience of smartphones
with the robustness of radio push-to-talkcommunication. This is also the reason
why we are thinking of introducing it to thehospital ships.

LEX L11,a Wave PTX
communicationdevice

PAGE 3

ENHANCING SAFETY AND IMPROVING EFFICIENCY AS
THE DRIVING FORCE FOR HEALTHCARE DIGITALIZATION
Koike: Motorola Solutions is working on
expanding more functions and developing
peripheral technologies to support the medical
field with the WAVE PTX. At Mobile HospitalInternational, we have also made various
proposals for the disaster medical services
to improve situational awareness that resultin faster, more accurate communication in
the moments that matter. Please share youropinion on how it can be used not only forthe current medical services but also as aroadmap for the future of healthcare.
Kitahara: First, I think this system can beused to support telemedicine. The number of
elderly people who need to see a doctor more
frequently is increasing, but there will beseveral cases where they cannot access themedical specialty institutions or reach theirpersonnel due to difficulties in transportation
or if they are living in remote areas. With theWAVE PTX, the medical team can share thenecessary information and support diagnosis
without being constrained by the location ortime. I believe that WAVE PTX is an effectivemeans of efficiently allocating limited
medical resources. In addition, I see a great
potential in the collection and accumulationof vital patient data using WAVE PTX for thehealthcare digitalization.
Koike: Does this mean that the informationcollected at individual clinics will be compiled
into a database?

CASE STUDY WAVE PTX

Kitahara: Yes, in the smart operating room
called “SCOT” at Tokyo Women’s MedicalUniversity, the patients undergoing surgery aremonitored and measured by the equipment,
and their information is integrated, organized,
and visualized so that it can be sharedinstantly with the surgical team. We areattempting to improve the standard of medicalcare by accumulating this information alongwith the video footage of the operation. If an
unexpected situation arises in the operating
room, we can instantly search the past cases
for answers quickly. This process will bettersupport the healthcare personnel and provide
peace of mind for the patients. In the sameway, if we use WAVE PTX system to recordand collect data when doctors are examining
patients at the clinics, I think we can build avaluable database to better support medicalcare.

medical practices will be optimized. Although
the results cannot be achieved in one or twoyears, I believe that it will be absolutely
necessary when we think about advancing
medicine in the 10 or 20-year time frame.
This important data can be used not only by
medical professionals but also by researchersand companies. In the United States (U.S),
there are examples of such data being used to
study the correlation between anti-smoking
ordinances and cigarette price hikes andhealth conditions. I would like to discuss how
DX can contribute to the medical policy, andnot just about reducing medical costs. By
accumulating vital data, it will be possible
to narrow down the types of diseases thatare suspected based on the recollections ofpatients who respond to medical interviews.
If this happens, we will be one step closer to
Artificial Intelligence (AI) diagnosis.

Koike: So, you are saying that we will be able
to focus not only on real-time communication
but also on accumulating valuable information?

Koike: We are currently developing an engine
for AI analysis of WAVE PTX data, and wehope that it will soon be put to practical use.
It will also be able to search for video files,
so if there are any unusual movements ofpersonnel during surgery, it will be possible totrack them.

Kitahara: That’s right. We can store patients’
medical records, but we cannot replace thedoctors’ experience. If the accumulated
data can be used as a reference for medical
residents to learn new things like palpation
and auscultation procedures, and on what tofocus during visual examinations, their skills
will improve in a short period of time, and their

Kitahara: That’s great, please update us
when you implement this autonomous learning
through AI.

PAGE 4

DEVELOPMENT OF WEARABLE DEVICES FOR
THE EVOLUTION OF MEDICAL CARE
Koike: What functions must the WAVE
PTX serve in the digitalization of healthcare
operation?
Kitahara: Whether the system functions asa remote support or as a database, quality
color reproduction is important to improve theaccuracy of visual diagnosis, so it is desirable
that WAVE PTX can take high-definition
images, preferably in the 8K class, andtransmit them without a time lag. Images fromdiagnostic equipment are also in 3D whichmake the data size larger. Therefore, the speedof the network is also an important factor, soI think it will be difficult to solve this problem
with the performance of the WAVE PTX alone.
Koike: I heard from a representative ofMotorola Solutions that they are developing
a 10K camera that can be used for imaging
during surgery. They are also pursuing
technology that can compress and transmit
large quantities of image files withoutcompromising the image quality. The current
network speed limit is 5G, but I believe thatin the future, higher speeds such as 6G and
optical communications will solve many
problems.
Kitahara: Front-line medical workers could
be working longer hours during an emergency.
Can this dedicated terminal last for an
extended shift of continuous operation?

CASE STUDY WAVE PTX

Koike: Definitely. With its high-capacity
battery, LEX L11 can be used continuously for
20 hours. It is also enclosed in a tough casingthat meets the demanding specifications ofthe U.S. military, hence it won’t break even
if it is dropped. We are also requesting forthe development of a wearable, dedicatedterminal of lighter weight, so that medical
personnel can have both hands free to perform
medical procedures during an emergency.
This new device would also display vital
information on the screen in sync with thepatient’s image, thus making it easy to beimplemented in ambulances, hospital ships
and hospitals to form an efficient ecosystemof medical services.

Instant communication
using a Wave PTX device
and mobile phone

Kitahara: I have high hopes for this newdevelopment. It could advance medical
services and support the local governmentinitiatives in healthcare. I am also interested
in hospital ships, so I would like to learn more
about them soon.
Koike: Thank you very much for yourinformative sharing today. Accelerating thedigitalization of hospital ships, which is ourgoal, is essential in emergency response
planning, as well as contributing to the
medical advancements in Japan, a maritimenation. I look forward to working with you
again in the future.

Information sharing and control
through multimedia such as audio
and video cameras

PAGE 5

WAVE PTX RADIOS AND
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Track your team on a map, share yourlocation, find an address or set ameeting place.

PTT Radio

Login from any PC and get the latest
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• Multimedia Communication
Share details with an individual or yourentire team via text, photo and video orfile attachment.

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Standard

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