Operators strategy for supporting the ‘Mobile Data Explosion’
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Operators strategy for supporting the ‘Mobile
Data Explosion’
Zahid Ghadialy
Managing Director, eXplanoTech Ltd.18/04/2012
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Briefly about eXplanoTech
Non-Confidential
© eXplanoTech Ltd.2
Technical Consulting
• Requirement Analysis
• Project Management
• Architecture and Specification
• Design, Implementation, Integration &
Deployment
• Testing Services (inc. IOT, CAT, Conformance, Field)
• Maintenance
Trainings
• Technology trainings
• Product trainings
• Process trainings
• Executive trainings
• Trainings on integrating cultural aspects in work
Resourcing and Recruitment
• Talent acquisition
• Executive head hunt
• Resourcing of projects
• Managed Services
• Technology and Business Intelligence domains
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Agenda
� Statistics and the Problem(s) summarised
� A look at ‘Network Capacity’ calculation
� Small Cells
� WiFi
� New features in 3GPP Standards
� Spectrum Issues
� TV White Spaces (TVWS)
� Carrier Aggregation
� Dynamic Spectrum Management (DSM)
� Case Study of a US Operator
Non-Confidential
© eXplanoTech Ltd.3
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Mobile data exploding – Random scary stats
� Median smartphone data usage at
AT&T was up 888% and up 551% at
Verizon this past year.
� In 2009, the top 3% of heavy users
generated 40% of wireless
network traffic. Now, these users
account for 70% of the traffic.
� The heaviest users of mobile data
watched videos 40% of the time,
surfed the Web an additional 20%,
and used up the rest of their
online time in e-mails, social
networking, file sharing and
software downloads.
Non-Confidential
© eXplanoTech Ltd.4
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Data Explosion: Myth and Reality
� The mobile data is not growing
as fast as was initially expected.
� This does not mean that the
operators do not have to
worry about coping with the
data demand
� Data traffic vs Revenues may
not be as bad as initially
thought
Non-Confidential
© eXplanoTech Ltd.5
Time
Traffic
Revenues
Time
Traffic
Revenues
Initial Prediction
Based on current data
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The Good News
Non-Confidential
© eXplanoTech Ltd.6
� There is still a huge market for accessing internet/data on the phones
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The Bad News
Non-Confidential
© eXplanoTech Ltd.7
� Infograph Source: http://www.localytics.com/blog/2012/only-6-of-ipad-app-
sessions-on-cellular-connection/
� Users want ‘true unlimited’ data plans from
their operators
� WiFi is always the preferred choice of the users
to access data:
� Its easy to setup and use in the modern devices
� Different reports point out that most of data from the
tablets do not go through the operators networks
� More phone users are switching on WiFi for data
usage
� Localytics, an App analytic company found in
the USA that 89.7% of iPad sold are WiFi only.
Among iPad’s with 3G connectivity 55% usage
is over WiFi and in LTE iPad’s, 64% usage is
WiFi
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The problems summarised
Operators
� How to generate more revenue
and recoup investment in Next-
G networks
� How to get more users to use
the mobile networks
� How to optimise the networks
so there are no bottlenecks
� Increase network capacity to
handle more users
� Better cell edge coverage for
the users
� How to monetise the usage of
WiFi
Users
� How to get cheapest possible
(unlimited) data plan with
fastest possible access (4G)
� How to avoid ‘Bill shock’ and
reduce network usage
� How to get better coverage
and reduce latency
� Why does the loading of pages
fail sometimes
� Why does loading of pages take
too much time
� How to get access to more WiFi
hotspots without paying and
worrying about login & security
Non-Confidential
© eXplanoTech Ltd.8
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‘Network Capacity’ calculation
Non-Confidential
© eXplanoTech Ltd.9
Network
Capacity
= Quantity of
Spectrum
x Cell
Spectrum
Efficiency
x Number of
Cells
(bps) (Hz) (bps Hz-1)
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Since 1947 ‘Network Capacity’ has increased
by a Million
Non-Confidential
© eXplanoTech Ltd.10
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But Data Usage has exploded as well
� The easiest way to increase the
number of cells is to have more
small(er) cells.
� The easiest way to cope with
this explosion is to increase the
number of cells
Non-Confidential
© eXplanoTech Ltd.11
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‘Small Cells’ to the rescue
� Small Cells has to happen:
� To improve speeds for users on Macro and on ‘small cells’
� To offload traffic and improve capacity of the network
� To improve coverage by reducing interference
Non-Confidential
© eXplanoTech Ltd.12
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But other problems may arise
� Operators expect users to pay for the ‘Small Cells’ but
most users expect them for free, especially business users
� If ‘Small Cells’ are not planned properly then they can
cause interference with the network and create coverage
black holes
� The data traffic still has to go through the operators
network and handling high amounts of data can still be a
problem for the operator
� The ISP’s are not happy with carrying operator traffic and
may cause problems or ask for compensation
� Even though the Access security is improved for the user,
the operator is exposing the network to potential hackers
Non-Confidential
© eXplanoTech Ltd.13
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‘WiFi’ – The real saviour?
� Over 1 billion units of WLAN chipsets are expected to ship this year
� Expected to double by 2014
� Operators that have deployed Carrier WiFi
� China Mobile – 1 million hotspots by end of 2013
� China Telecom – 1 million hotspots by end of 2012
� SK Telecom – 60,000 hotspots by end 2011
� Korea Telecom – 100,000 hotspots by end 2011
� KDDI, Japan – 90,000 by Q2 2012
� Skyhook (a company that pioneered WiFi based positioning system)
has already have over 250 million access points in its database [June
2011]
� Australian operator Telstra closed their Carrier WiFi network in Feb.
as they rolled out ‘Mobile WiFi’ based on LTE.
Non-Confidential
© eXplanoTech Ltd.14
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WiFi v/s Small Cells
WiFi (802.11n)
� No Spectrum constraints
� 40MHz available in the 2.4GHz
band
� Latency is better than mobile
networks
� Throughput upto 600Mbps in
40MHz BW using 4x4 MIMO
� Radio cheap and already in
most new mobiles, laptops and
tablets.
Small Cells (HSPA+/LTE)
� Licensed Spectrum only
� Large bandwidths not always
possible
� Latency not as good as WiFi
� HSPA+ DL in Rel-11 upto
672Mbps and LTE DL in Rel-10
upto 600Mbps in 40MHz BW
using 4x4 MIMO.
� Radio expensive and not as
easily available in laptops and
tablets.
Non-Confidential
© eXplanoTech Ltd.15
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Benefits of Carrier WiFi
� ‘Offload’ mostly at traffic
hotspots like airports,
shopping malls, etc.
� Reduced price data on ‘Pay as
you use’ schemes.
� Reduced price data roaming
internationally. MVNO’s can
cash on this big time.
� ‘Onload’ when the data speeds
are low due to network
congestion.
� Can be offered to subscribers
using non-cellular devices as
‘perk’.
Non-Confidential
© eXplanoTech Ltd.16
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New features in 3GPP standards
� New features are being developed by 3GPP that are
intended to provide a value addition to the Mobile
Broadband offering and making it more integrated with
WiFi for value addition
� Local IP Access (LIPA) – Release 10
� Selected IP Traffic Offload (SIPTO) – Release 10
� IP Flow Mobility (IFOM) – Release 10
� Continuity of Data Sessions (CSN) – Study item in Release 12
Non-Confidential
© eXplanoTech Ltd.17
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Local IP Access (LIPA)
Non-Confidential
© eXplanoTech Ltd.18
IP Core Network
Residential/Enterprise
IP Network
Scope for Local
IP Access
Logical connection for
mobile operator IP trafficHeNB
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Selected IP Traffic Offload (SIPTO)
Non-Confidential
© eXplanoTech Ltd.19
IP Core Network
Residential/Enterprise
IP Network
Logical connection for
mobile operator IP trafficHeNB
Internet
Data Traffic
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IP Flow Mobility (IFOM)
Non-Confidential
© eXplanoTech Ltd.20
IP Core Network
Residential/Enterprise
IP Network
Data Traffic Path 1
Internet
Data Traffic Path 2
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Continuity of Data Sessions (CSN)
Non-Confidential
© eXplanoTech Ltd.21
HeNB
IP Core Network
Residential/Enterprise
IP Network
Scope for Local
IP Access
Logical connection for
mobile operator IP traffic
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TV White Spaces (TVWS)
� Main driver for TVWS is that they are in the sub 1GHz
band that can increase coverage significantly
Non-Confidential
© eXplanoTech Ltd.22
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Sub 1GHz band is ‘Platinum Band’ in Japan
Non-Confidential
© eXplanoTech Ltd.23
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Interference is the biggest Issue
Non-Confidential
© eXplanoTech Ltd.24
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Carrier Aggregation (CA)
� Contiguous and Non-Contiguous
� Multi-carrier
� Two 5MHz carriers in 2100MHz to make a 10MHz carrier
� Multi-band
� For example 5MHz from 2100MHz and another 5MHz from 900MHz
� LTE Inter-mode Carrier Aggregation
� Aggregating FDD and TDD bands
� Inter-technology Carrier Aggregation
� For example LTE & HSPA+
� Licensed-Unlicensed Carrier Aggregation
� LTE + WiFi
Non-Confidential
© eXplanoTech Ltd.25
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Dynamic Spectrum Management (DSM)
Non-Confidential
© eXplanoTech Ltd.26
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Things to remember for any Dynamic
Spectrum Management Techniques
� The operator network would have to implement the
technology but the devices would have to support the
bands
� The Spectrum would be generally available for use by all
operators and maybe other devices/technologies and it
would also vary from one area to another. As a result a
central authority would be required to handle this
� The government/authorities would not let this spectrum
be used for free, forever. As soon as a workable solution is
available they are bound to ask for some kind of fees.
� The whitespaces would be auctioned or sold in future and
it would have to be decided in advance if there is a case
for using them for a certain duration of time.Non-Confidential
© eXplanoTech Ltd.27
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Case Study of a US Mobile Operator
Non-Confidential
© eXplanoTech Ltd.28
Data reproduced with kind permission of Keima Wireless
using the ‘Overture’ tool
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Non-Confidential
© eXplanoTech Ltd.29
D.H. Ring, Bell Labs - Telephony - Wide Area Coverage, 11 December 1947D.H. Ring, Bell Labs - Telephony - Wide Area Coverage, 11 December 1947
1947
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Non-Confidential
© eXplanoTech Ltd.30
2012
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Non-Confidential
© eXplanoTech Ltd.31
2012
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Non-Confidential
© eXplanoTech Ltd.32
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Non-Confidential
© eXplanoTech Ltd.33
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Non-Confidential
© eXplanoTech Ltd.34
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Putting it all together
Non-Confidential
© eXplanoTech Ltd.35
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Non-Confidential
© eXplanoTech Ltd.36
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Non-Confidential
© eXplanoTech Ltd.37