Business prospect of launching blackberry with video calling in CDMA
video calling in
CDMABy- PRANITA MEHTA
Blackberry has provided video calling facility
on BBM for the first time on the recently
launched Blackberry Z10 and Q10 phones.
Before this, there was no video calling on
In this presentation, I will attempt to analyse
whether a Blackberry phone with video
calling facility in CDMA will be successful in
There are two types of network
technologies for wireless communication
CDMA stands for Code Division Multiple
Access technology, which is completely
distinct from GSM system.
Code division multiple access (CDMA) is
a channel access method used by
various radio communication
CDMA is used as the access method in
many mobile phone standards such
as cdmaOne, CDMA2000 (the 3G evolution of
cdmaOne), and WCDMA(the 3G standard used
by GSM carriers), which are often referred to as
CDMA is used as the second and third generations
of the wireless communication.
It does not use the SIM card, rather gives a specific
serial number to the handsets.
CDMA systems use multiple access schemes, which
are pioneered by QUALCOMM, etc.
The conventional communication systems use const
ant frequencies, CDMA uses multiple access, or
multiplexing. Accomplished through the specific
type known as spread spectrum in this
case, multiplexing uses varied frequencies to
transmit audio signals. This, coupled with code
division, which requires a certain code to send and
receive the frequency, further protects
CDMA communications from interference.
While some countries outside of the United States
offer CDMA technology, it is not as widely used
outside of the U.S., as is GSM technology.
Unlike GSM which has a SIM card, so that the phone
can be easily swapped, CDMA cell phones have
an inbuilt R-UIM(Removable User Identity Module)
where this is not possible.
Advantages of CDMA
Call quality is better than GSM system.
Greater coverage for lower cost
Improved security and privacy
Increased Data Throughput
The phone calls are more secured
because of the spread spectrum.
Disadvantages of CDMA
Very few number of CDMA handsets are
available in the market.
It has only a few service providers, which can
be uncomfortable for the customers in case
of low service level.
If you want to upgrade the CDMA phone
carrier, you will have to deactivate the
present one and activate the new. In doing
so, the phone with the initial carrier becomes
If you are frequent overseas traveller, the
CDMA coverage is sure to make you upset.
GSM stands for Global System for Mobile
It came in the market in the mid of 1980’s and
generally operates in the 900 and 1800-MHz
SIM cards are small in size, with removable
memories and hold a lot of data and
numbers of identification which are required
to access any wireless service provider. SIM
card is bound with the network, instead of the
handset. It can be easily interchanged with
another GSM phone by just swapping it out.
GSM works on the basis of Time division multiple
access (TDMA). TDMA allots a specific time period
on a specific frequency to the GSM.
GSM network connections are considered better
secured than CDMA. GSM divides its frequency
bands into many channels, so that a large number
of users can make a call through a single tower.
GSM covers up to 82% of the global market.
Presently GSM supports more than one billion
mobile subscribers in more than 210 countries
throughout the world.
The GSM provides basic to advanced voice and
data services including Roaming service. Roaming is
the ability to use your GSM phone number in
another GSM network.
Advantages of GSM
Improved spectrum efficiency.
Low-cost mobile sets and base stations
Compatibility with other telephone
Support for new services.
Disadvantages of GSM
The per-unit charge on roaming calls is
higher in GSM than CDMA.
Calls made through GSM mobiles can be
If the SIM gets lost, one can lose all the
data, if the same is not saved in the
The number of GSM users is very large as
compared to the number of CDMA users.
The GSM Association estimates that
technologies defined in the GSM
standard serve 80% of the global mobile
market, encompassing more than 5 billion
people across more than 212 countries
and territories, making GSM the most
ubiquitous of the many standards for
Global Reach: GSM is in use over 80% of the
world’s mobile networks in over 210 countries
as compared to CDMA. CDMA is almost
exclusively used in United States and some
parts of Canada and Japan. As the European
Union permissions GSM use, so CDMA is not
supported in Europe. In North
America, especially in rural areas, more
coverage is offered by CDMA as compared
to GSM. As GSM is an international
standard, so it’s better to use GSM in
international roaming. GSM is in use by 76% of
users as compared to CDMA which is in use
by 24% users.
Coverage: The most important factor is
getting service in the areas you will be
using your phone. Upon viewing
coverage maps you can discover that
GSM network has a wider coverage as
compared to CDMA network. It is
because the GSM network came into
existence before the CDMA network and
the number of GSM users are more than
that of CDMA users.
Data Transfer Speed: With the advent of
cellular phones doing double and triple duty
as streaming video devices, podcast
receivers and email devices, speed is
important to those who use the phone for
more than making calls. CDMA has been
traditionally faster than GSM, though both
technologies continue to rapidly leapfrog
along this path. Both boast "3G" standards, or
3rd generation technologies.
Subscriber Identity Module (SIM) cards:
Only GSM phones use SIM cards. The
removable SIM card allows phones to be
activated, interchanged, swapped out
and upgraded, all without carrier
intervention. The SIM itself is tied to the
network, rather than the actual phone.
Phones that are card-enabled can be
used with any GSM carrier.
Security: More security is provided in CDMA
technology as compared with the GSM
technology as encryption is inbuilt in the
CDMA. A unique code is provided to every
user and all the conversation between two
users are encoded ensuring a greater level of
security for CDMA users. The signal cannot be
detected easily in CDMA as compared to the
signals of GSM, which are concentrated in the
narrow bandwidth. Therefore, the CDMA
phone calls are more secure than the GSM
calls. In terms of encryption the GSM
technology has to be upgraded so as to
make it operate more securely.
In order to find out whether the launch of
Blackberry with video calling in CDMA will
succeed or not, a comparison needs to
be drawn between video calling facilities
on CDMA and on GSM.
Video Calling Facility
As of yet, very few Blackberry phones
support video calling facility.
Blackberry messenger is one of the most
popular applications on the BlackBerry
platform, and now it’ll include video
calling and screen sharing on the new
BlackBerry 10 phones which were
The relevant criterion to be compared is the data
transfer speed. It has been seen that both
technologies can be used with 3G standard
phones, but 3G GSM speeds can be faster than 3G
CDMA speeds, which can make a big difference
for those who use their phones for social
networking, email and streaming video.
They both have derivatives for use with 3G phones
known as Universal Mobile Telecommunications
System (UMTS) for GSM and CDMA2000 for
The fastest 3G standard used with CDMA2000
is EV-DO Rev B., which has downstream data
rates of about 15.67 Megabits per second
(Mbit/s). The fastest standard available with
UMTS is HSPA+, with downstream speeds of up
to 28 Mbit/s.
Further, UMTS systems use stronger encryption
schemes than CDMA2000 systems do, and
provide multiple layers of protection for both
the subscriber and the network operator.
Notably, UMTS also supports wideband and
ultra wideband variants of AMR, providing
higher quality voice calls.
UMTS systems also support true video
calling by combining the voice channel
with a video channel (packet data
channel is not used for this).
At comparable performance and
capacity levels, UMTS uses less spectrum
than CDMA2000, but initial deployments
of UMTS require more spectrum than
HSPA+ adds to a UMTS network by
providing a major upgrade to the data
transport system, which can grow to
provide the data speed and capacity
subscribers need and want.
On the other hand, CDMA2000 is pretty much
dead in terms of innovation. The EVRC voice
codecs used in CDMA aren't nearly as good
as the GSM AMR codec family (and EVRC isn't
a well-designed codec to begin with, either).
CDMA2000 has practically no support for
native video calling, while UMTS and LTE
(through VoLTE) do.
Thus, launching a Blackberry with video
calling in CDMA will not be a viable prospect
and will not be successful in the market.