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News Brief
Telecom Italia and ZTE:
Fibre-Optic Network Installed in
New Houses at L’Aquila
■
■
Next-generation ultra broadband infrastructure (NGN) available in all 183 C.A.S.E. project
buildings –– a total of 4,600 apartments –– offering links at speeds of up to 100Mbps
Over 17,000 people will be able to use telecommunications services and broadband links
designed for innovative services
From left to right: Zhu Jinyun, Senior Vice President of ZTE, Sun Yuxi, Chinese Ambassador to
Italy, Oscar Cicchetti, CTO of Telecom Italia, and Massimo Cialente, Mayor of L'Aquila
L’Aquila, 17 December 2009 ―Telecom
Italia with the support of ZTE, has offered
a significant boost to post-earthquake
reconstruction by laying modern fibreoptic network infrastructure into every
single new home in the C.A.S.E. project
(the acronym stands for EarthquakeProof, Sustainable and EnvironmentallyCompatible homes).
Under the “L’Aquila Ultrabroadband
Project” initiative, on schedule, all
183 buildings on new plots have had
ultra broadband connections installed
capable of offering speeds of up to
100Mbps. Every family assigned one of
the 4,600 new homes will have access
to telecommunications services and
broadband links with sufficient capacity
to offer groundbreaking services such as
IPTV and high-speed internet access.
Building the new fibre-optic network
in L’Aquila is part of Telecom Italia’s
Next Generation Network (NGN2)
development project, which has begun in
Milan and Rome with a view to equipping
the country with modern ultra-broadband
telecommunications infrastructure.
The “L’Aquila Ultrabroadband Project”
required installing fibre-optic network
infrastructure combining FTTB and FTTH
architecture.
ZTE helped to supply transmission
equipment and all network solutions both
from the exchange to the building and
within buildings (GPON and VDSL2),
using high-density, low-energy line cards.
Oscar Cicchetti, Head of Technology
& Operations at Telecom Italia, says,
“Telecom Italia has made a significant
contribution to the whole earthquake relief
effort, from handling the emergency to
supporting people in the aftermath of the
earthquake. As part of this commitment,
the company was keen to build a modern
fibre optic network for L’Aquila capable of
delivering advanced telecommunications
services. We are pleased with what we
have achieved with ZTE, and with our joint
commitment to building a major piece of
infrastructure that should help the city back
on track economically and materially.”
www.zte.com.cn
A Monthly Publication
Vol. 12 No. 1 Issue 120 January/2010
P3
Cover Story
Sticking to Differentiated Innovation
An interview with Chen Jie, Senior Vice President of ZTE Corporation
Focus
P8
Infinite Integration
Creating Everlasting
Value
With years of
technology
accumulation in
the field of wireless
broadband, ZTE ensures
that its LTE products
have a high technical
level and can rapidly
achieve technical
convergence and be put
into commercial use
P10
P13
Long Term Evolution ― Imagine Life Now
It can be expected the coming 4G technology
brought by CSL will lead the wireless
telecommunication market and bring an extremely
fast experience to the people of Hong Kong
IMS: Key in LTE Age
The nature of IMS allows it to easily fit into LTE
network and create rich services for end users
Third Eye
P15
Gartner’s Dataquest Insight: Scorecard for Vendors of LTE Network Infrastructure
According to Gartner, ZTE is a strong player in the LTE industry with a quality product portfolio and a
growth strategy that is both prudent and sustainable
Editorial Board
Editor-in-Chief: Gu Yongcheng
Research Note
Pivotal Role of Heterogeneous Networks in 4G
Deployment
18
The innovative concept of building a resilient WiMAX
network has an insight into the operators’ needs from
the perspective of hybrid macrocell networking and
layered micro/pico/femtocell networking
Editorial Director: Zhao Lili
Executive Editor: Yue Lihua
Circulation Manager: Wang Pingping
Heterogeneous networks hold great promise to meet
consumer demand for rich mobile Internet data, while
providing optimum total cost of ownership for the
network operators
Broaden Your Way with Resilient WiMAX Network
Deputy Editor-in-Chief: Huang Xinming
Subscription / Customer Services
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is free of charge
Tel: +86-551-5533356
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Email: [email protected]
Website: www.zte.com.cn
Editorial Office
Product Marketing System
11F, R&D Building, ZTE Plaza,
P18
Hi-Tech Road South, Hi-Tech Industrial Park,
P21
Shenzhen, P.R.China
Postcode: 518057
Tel: +86-755-26775211
Fax: +86-755-26775217
Email: [email protected]
ZTE Profile
ZTE is a leading global provider of
telecommunications equipment and network
Solution
Intelligent CDMA Network Solution
The intelligent CDMA network solution offers
intelligent capability throughout the whole network
lifecycle including network planning, deployment,
operation and maintenance, and optimization
News Brief
January 2010
ZTE TECHNOLOGIES
solutions. It has the widest and most complete
24
product range in the world—covering virtually
every sector of the wireline, wireless, service
and terminals markets. The company delivers
innovative, custom-made products and
services to over 500 operators in more than
26
140 countries, helping them achieve continued
revenue growth and shape the future of the
world’s communications.
Cover Story
Sticking to
Differentiated Innovation
An interview with Chen Jie, Senior Vice President of ZTE Corporation
By Zhao Lili
T
hough overseas telecom
operators slowed down their
pace of growth in 2009 due the
global financial crisis, the issuance of
3G licenses in China stimulated a new
upsurge in 3G network construction.
China’s three major telecom operators
are competing for full-service operation
and for higher wireline and mobile
broadband speeds. ZTE has achieved
outstanding performance in both
optical access and bearer network
products. Recently, the journalist of
ZTE TECHNOLOGIES interviewed
Chen Jie, Senior Vice President of ZTE
Corporation.
Chen Jie graduated from Nanjing University of Posts & Telecommunications
in 1989 and received her master degree in Computer Science from the City
University of New York in 1995. In 1989–1992, she was Manager of the
Development Department, Zhongxing Semiconductor Co. Ltd. In 1995–
2002, she worked as Senior Researcher, Manager of Research Department
of AT&T Bell Labs, and later as General Manager of ZTE’s Branch in USA.
In 2002–2007, she was appointed Vice President of ZTE and General
Manager of ZTE Network Division. From 2007 till now, she serves as Senior
Vice President of ZTE, responsible for management of the company’s wired
infrastructure business. Chen Jie has gained rich experience in technology
and management in the telecom industry for 20 years.
Journalist: With the adjustment
of strategic framework in the telecom
industry, more and more operators
worldwide have become full-service
operators and are seeking to transform
into service providers. What has ZTE
done to its Wired & Service Products
in face of the transformation trend?
Is there any targeted strategy for
product development?
Chen Jie: The transformation trend
to full-service operation is bound to
bring great changes to the industry
chain. Equipment vendors support the
transformation of operators, speed up
the Internet infrastructure construction,
and attempt to deploy new Internet
applications; terminal vendors take
ZTE TECHNOLOGIES
January 2010
Cover Story
We have captured
over 45% share in China’s
xPON market and have
widely deployed our xPON
products in many countries
and regions such as Italy,
Sweden, Hong Kong,
Malaysia, Thailand, Saudi
Arabia, and Indonesia. As
of September 30, 2009,
our xPON products had
reached 26 million lines in
commercial use worldwide,
with broadband ports
exceeding 10 million lines.
January 2010
ZTE TECHNOLOGIES
advantage of mobile Internet to
strengthen their competition for user
interfaces and service platforms and
to acquire other enterprises in the
industrial chain; IT hardware providers,
service operators and Internet service
providers are actively building nextgeneration Internet computing and
storage platforms, such as cloud-based
server and storage devices; and VAS
platform suppliers are using the Service
Delivery Platform (SDP) to offer open
access to Internet services.
The operators’ full-service operation
poses a challenge to equipment vendors.
However, international experience
allows ZTE to have more space for
development. We have helped many
well-known global operators gradually
transform into full-service operators.
Being the equipment vendor that has
the widest and most complete product
range in the industry, ZTE is capable of
providing total solutions at all network
levels. This is our advantage. While the
operators are seeking to transform into
service providers, we keep on growing
and consider the future telecom
development on the operators’ position.
Now we can not only provide operators
with custom-made solutions, quality
project delivery and engineering
service, and series products that support
smooth evolution and upgrade, but
also adopt the environmental-friendly
and energy-saving concepts and
technologies to help them implement
full-service operation.
The FTTx solution, converged
bearer network solution, and
Anyservice solution developed by ZTE
Wired & Service Product Division
help operators build their broadband
access networks and bearer networks
as required, and offer operable featurerich value-added services. The major
task for full-service operation is to
widely deploy broadband services over
a high-bandwidth, quality and healthy
broadband network. ZTE Wired &
Service Product Division has been
committed to delivering complete
broadband products and solutions. In
the field of service provisioning over
the broadband network infrastructure,
we can help operators deploy
multimedia video business on a large
scale. We have deployed large-scale
commercial IPTV networks in many
regions around the world, and believe
that we will have a promising prospect
in the video service arena.
J: Currently, the xPON technology
has been widely recognized by the
industry as the first choice for FTTx.
Would you please introduce the
development of ZTE xPON products
in the global market? What do you
think of the future of the xPON
technology?
Chen Jie: Our ZXA10 xPON
optical access products have leading
advantages in the global market.
Among the world’s first vendors to
develop and commercialize optical
access products, ZTE has a profound
understanding and clear market
positioning of the xPON technology.
We have captured over 45% share
in China’s xPON market and have
widely deployed our xPON products
in many countries and regions such as
Italy, Sweden, Hong Kong, Malaysia,
Thailand, Saudi Arabia, and Indonesia.
As of September 30, 2009, our xPON
products had reached 26 million lines
in commercial use worldwide, with
broadband ports exceeding 10 million
lines.
In product design, we take into full
consideration the product compatibility
and inheritance to protect the operator’s
i n v e s t m e n t . O u r e x i s t i n g O LT
equipment supports mixed insertion of
GPON and 10G EPON. ZTE launched
the world’s first next-generation PON
prototype, which is a green, converged,
future-proof, high-capacity, multi
service access platform supporting
GPON, EPON and P2P as well as the
emerging next generation 10G-EPON
and NG-PON in a single shelf.
The basis for the operators to choose
ZTE as their strategic partners lies in
our continuous investment in the xPON
field. We will actively participate in the
next-generation nationwide broadband
network projects around the world and
take it as our own responsibility to
significantly improve the broadband
access experience for subscribers.
J: The current hot technologies
like cloud computing and Internet
of Things (IOT) have attracted
increasing attention from operators
and equipment vendors. ZTE
recently held a forum in Hainan on
cloud computing. Could you tell us
ZTE’s decisions and measures on
service innovation?
Chen Jie: ZTE has been committed
to innovating and developing its
services and has invested a great deal
of resources in cloud computing, IOT
and mobile Internet. What we are
doing is not exactly an innovation, but
a reasonable integration and evolution
based on existing technologies.
ZTE has been studying the related
fundamental technologies for many
years. Take cloud computing for
example, we have more than 6 years
of accumulated experience in studying
its core technologies, including
virtualization, distributed computing
and distributed storage. At the same
time, we have developed a series of
software and hardware platforms
centered on these technologies, and
some of the platforms have been widely
applied to our products.
In addition to developing our
own technologies, we also pay great
attention to the cooperation and
development of the industrial chain.
We have established a comprehensive
partnership with global well-known
enterprises and research institutes.
Recently, we held a forum on cloud
ZTE TECHNOLOGIES
January 2010
Cover Story
computing in Sanya, China’s Hainan
province and got support from many
partners and research institutes. The
forum was also an interactive showcase
of the phase achievements we have
achieved in cloud computing.
Noticing that cloud computing has
achieved great success in the Internet,
ZTE is now working hard to promote
this technology in the telecom field, or
specifically, to apply it to the existing
telecom equipment and software service
with a view to offering operators new
type of “service” products featuring
cost-effectiveness, ease of deployment
and high reliability. These products are
quite different from the original ones
in design pattern and business model.
Customer-centered design and servicecentered business model are the core of
these new products.
Now we can provide a full
range of cloud computing products
including infrastructure, platforms
and applications. In particular, we can
supply the Unified Open Environment
(UOE) platform for rapid development
of telecom and Internet services. This
platform helps third-party software
providers simplify the process and
reduce the difficulties in developing
converged telecom and Internet services
and products, even if they have no solid
background in telecom domain. In this
way, the software developers can focus
their attention on service innovation
rather than implementation of technical
details in telecom.
We can also offer a large number of
cloud computing products and services.
On the one hand, we have “clouded”
our original value-added service
products, allowing them to directly
offer cloud computing services; on
the other hand, we have applied cloud
computing platform directly to the IOT
and mobile Internet to deliver cloud
January 2010
ZTE TECHNOLOGIES
computing services.
In addition, we have long recognized
the importance of cooperation in the
industry chain. To meet the arrival
of 3G, ZTE has set up a healthy
ecological value chain in the form of
“ZTE + CP/SP + terminal partners
+ operating partners”, effectively
supporting the operators’ business
growth. To make service innovations
under the new circumstance, ZTE also
needs cooperation to achieve winwin development. We will continue to
expand cooperation with our partners in
the new field and to jointly push forward
a sustained and healthy development of
software and service products.
J: ZTE’s wired infrastructure
solutions, such as FTTx solution and
RPR-embedded E-MSTP solution,
have won the Infovision Awards at
Broadband World Forum Europe.
Could you say something about these
achievements?
Chen Jie: First of all, we stick
to the strategy of sustained product
innovation. Being one of the first
vendors to develop and commercialize
optical access products, ZTE has a
profound understanding and clear
market positioning of the optical
network technology, and attaches great
importance to its product strategy.
As our optical access series products
are the major source of our business
and also one of our strategy and
development directions, they have
been highly valued by top leaders of
the company. We have set up R&D
centers and innovation labs in Beijing,
Shanghai, Nanjing and Shenzhen. By
sticking to the strategy of sustained
product innovation, we can maintain
the leadership and competitiveness of
core bearer network technologies and
help our customers take the lead in
technologies and networks.
Secondly, we stick to the strategy of
going deep into the market. Our product
management team always dives deep
into customers’ needs. Considering the
technological innovation and product
differentiation, we set up an expert
team consisting of the chief engineer,
marketing director, product managers,
planning managers and marketing
managers, who are sent deep into
the frontline to do market research.
Starting with the market environment,
key needs of VIP customers and the
competition situation, they excavate
our product differentiation highlights
and look for market opportunities.
Thirdly, we stick to the strategy
of “creating highlights on the basis”
in product differentiated innovation.
“Basis” refers to basic product functions,
such as the advantages of high reliability,
high stability, and easy management in
the E-MSTP solution. “Highlights” refer
to the product differentiated highlights.
For example, the E-MSTP solution
provides enhanced packet processing
capability. Such strategy concept
can completely leverage our existing
advantages while helping operators fast
deploy their optical networks and protect
their investment.
J: It is known that ZTE’s power
supply products have seen rapid
growth in the past two years. What
are the current situation and possible
trend for them?
Chen Jie: In 2009, our power
supply products took the largest
s h a r e i n C h i n a ’s t e l e c o m p o w e r
supply market and made strategic
breakthroughs in many regions around
the world, such as Asia-Pacific, India,
South Africa, Europe and so on. Our
overseas sales volume in power supply
business increased by 200% on a year-
on-year basis, laying a solid foundation
for future market expansion.
The current financial crisis has led
to reshuffling of the global telecom
power supply market. To further
reduce procurement cost, global MTOs
trend to independent model selection
and centralized purchase of power
supply products, which will create
an unprecedented opportunity for
fast and large-scale deployments of
power supply products worldwide. We
continue to increase our investment in
the R&D of environmental-friendly,
energy-saving and efficient power
supply products and offer renewable
energy solutions to over 40 operators
around the world, including CMPAK,
MTN, TMI, ET, ETC and so on; we
have strategic cooperation with highend operators, providing custommade and differentiated power supply
solutions for them, such as the co-site
power supply solution for operators in
the Indian market and the 48V/24V corack power supply solution for MTN in
South Africa.
The direction of our efforts in power
supply business in the next 3-5 years
is to focus on Tier-1 markets and
promote the sales growth in overseas
markets, making us among the global
mainstream providers in the field of
telecom power supply.
J: When cooperating with
operators in the Wired & Service
Product sector, how does ZTE ensure
perfect customer service and highquality project delivery? What are
your comments on the growth of
ZTE’s Wired & Service Products in
the service area?
Chen Jie: We have set up a global
customer service network capable of
delivering fast and convenient service
to customers worldwide. In ZTE’s 12
Our development vision in the Wired &
Service Product sector is to become world’s leading
provider of new-generation wired network solutions,
ranking top three in the global market share in 2012.
overseas platforms, 96 overseas offices
and 29 domestic offices, there are
maintenance engineers specialized in
Wireline & Service Products who can
provide various on-site service models
such as supervision and software
debugging. To ensure quality projects,
all service models are operated and
managed through PMO.
There are hundreds of turnkey
wired network projects we are doing
or have finished around the world.
For example, the CADAFE project
is a turnkey project in Venezuela. It
contains DWDM and MSTP/10G
SDH transmission networks, with a
total length of 6800Km and features
like multi-service support capability,
large capacity, high bandwidth, flexible
scalability and abundant service
interfaces. We adopt the advanced
management model to ensure perfect
customer service and high-quality
project delivery.
Wi t h t h e t r a n s f o r m a t i o n o f
global operators, major equipment
manufacturers in the industry begin to
implement strategic transition, adjust
their organizational structure, integrate
resources and increase investment
in telecom service. Their revenues
from telecom service are increasing
year by year. One of our strategic
goals is to develop from a hardware
provider to a provider of excellent
software and service products. Our
major developments in the service area
include better customization of service
and terminal products and increased
investment in the R&D of Managed
Wired & Service Products.
J: Finally, would you please tell
us ZTE’s development vision for its
Wired & Service Products and its
overall development strategies?
Chen Jie: Our development vision
in the Wired & Service Product sector
is to become world’s leading provider
of new-generation wired network
solutions, ranking top three in the
global market share in 2012.
“Cost leadership, rapid
customization and sustained
innovation” are our overall product
development strategies. Cost
leadership strategy is one of our
major development strategies we have
insisted on. ZTE’s Wired & Service
Product Division has been devoted
to reducing product costs, helping
customers’ reduce their TCO to cope
with the increasingly cost pressure and
get a competitive edge in the long run.
We insist on customer-oriented
philosophy to offer customers tailormade products. Rapid customization is
one of our core competitive edges. We
also insist on the strategy of sustained
product innovation to maintain the
leadership and competitiveness of
our core technologies, helping our
customers take the lead in technologies
and networks.
ZTE TECHNOLOGIES
January 2010
Focus
Infinite Integration
Creating Everlasting
Value
Review of ZTE’s LTE Development
By Liu Shouwen, Zheng Hong
F
rom 2G, 3G to 4G, also from
the terminal, the equipment
to the services, ZTE has been
leading the industry of communication
technologies and provided integrated
solutions to global operators. In 2005,
ZTE started tracking and standardizing
LT E t e c h n o l o g y a n d a c t i v e l y
participated in LTE standardization
efforts at organizations like 3GPP.
So far, ZTE has joined more than
40 standard organizations, alliances
and forums, actively participated in the
discussion and drafting of standards
at ITU, 3GPP, 3GPP2, IEEE, OMA
and other organizations, and submitted
over 1,800 proposals to 3GPP covering
wireless air interface, RAN and CN, of
January 2010
ZTE TECHNOLOGIES
which, more than 500 proposals have
been adopted by 3GPP. In addition,
ZTE possesses 8 rapporteur seats in
3GPP. As of September 2009, ZTE
had submitted to 3GPP a total of more
than 1,500 proposals on LTE/SAE. In
December 2006, ZTE became one of
the first equipment vendors to join Next
General Mobile Network (NGMN),
and in October 2007, ZTE became one
of the first equipment vendors to join
LTE/SAE Trial Initiative (LSTI). ZTE
has been actively promoting the LTE
industry development.
With years of technology
accumulation in the field of wireless
broadband, ZTE ensures that its
LTE products have a high technical
level and can rapidly achieve
technical convergence and be put into
commercial use. Currently, ZTE has
established R&D centers in Xi’an,
Shenzhen, Shanghai, Nanjing, the
United States, Europe and other places.
Over 2,000 engineers are devoted to
LTE research and development.
ZTE actively communicates
and cooperates with the world’s
leading operators to jointly make
product planning and push forward
LT E i n d u s t r i a l i z a t i o n . T h e LT E
series products currently under its
research cover FDD LTE and TDD
LTE, including macro base stations,
distributed base stations, core
network equipment, unified network
management, service products and
terminal products, meeting various
needs of the market. Meanwhile, ZTE
keeps on innovating LTE terminals,
investing a great amount of R&D
resources in them. Now, it has mastered
core technologies of LTE terminals and
possessed many core patents, capable
of providing LTE terminals compatible
with several standards. As a vendor of
both network equipment and terminals,
ZTE is committed to developing the
LTE industrial chain.
ZTE LTE products enjoy leading
performance, with a single cell providing
data rates of up to 150Mbps on the
downlink and 50Mbps on the uplink,
thus allowing many mobile phone users
to enjoy high-speed data services in
dense traffic urban areas while reducing
the TCO of network construction. Under
the single-mode LTE, the output power
of a RRU can reach 2 × 40W. The base
station platform adopts high efficiency
power amplifier, capable of saving 40%
energy consumption. The SDR base
stations can save 70% TCO compared
with traditional base stations.
ZTE’s SDR technology enables the
evolution and upgrade from WCDMA,
CDMA2000, TD-SCDMA to LTE
based on the same unified hardware
platform. With this technology, multistandard wireless communications
systems can coexist on the same
hardware platform and the network can
be flexibly deployed.
ZTE is the first one in the industry
to adopt, in its wireless products, the
advanced MicroTCA platform, which
boasts such outstanding advantages
as multi-standard, multi-module, high
performance, high reliability and lowcost. The evolution to LTE simply
requires adding the LTE BP board, and
the hardware structures, control and
access modules can be reused, reducing
costs to the maximum.
ZTE’s wireless solution Uni-RAN
provides a unified, integrated and
evolving wireless access network.
Through a unified platform structure,
it provides a unified SDR base
station solution, unified RNC/BSC
platform solution and unified network
management solution to meet the
current multi-band and multi-standard
convergence requirement and realize a
smooth evolution to the next generation
technologies. At the same time, the
network structure can be simplified and
the TCO can be effectively reduced.
ZTE began to design and develop
LTE system in 2007; launched LTE
prototype in early 2008; launched
LTE test prototype and participated in
testing and trials hosted by standard
organizations and operators at the
end of 2008; in 2009, ZTE made a
phenomenal progress in the R&D and
marketing of LTE and has entered
partnerships with over 10 leading
operators worldwide including Telstra’s
CSL, Telefonica and SingTel.
In the Asia-Pacific region, ZTE is
collaborating with CSL to build the
world’s first dual-band LTE commercial
trial network that supports LTE/UMTS
dual-mode operation and will test LTE
at the 2.6 GHz /1.8GHz dual bands in
phases.
In Europe, ZTE received LTE
testing permission from Telefonica
and would do relevant LTE tests in
Madrid. Moreover, ZTE signed a LTE
trial agreement with Vodafone D2 in
Germany. The two companies jointly
conducted a GSM/LTE dual-mode
demo and launched the LTE field test at
the Digital Dividend (DD) band.
In China, ZTE was the first company
to complete and pass the TD-LTE
Phase II test with China Mobile; ZTE
became the only vendor to use pre-
business Evolved Packet Core (EPC)
to complete the total system tests. As
an industry first to use third party UE
to complete the tests, ZTE achieved its
expected results, including zero fault,
zero malfunction and 100% connection
rate. This TD-LTE test also makes
ZTE the first company to complete
a performance test under a 350Km/h
high-speed mobile channel model,
reaching the best theoretical value.
With its excellent testing results, ZTE
was selected to deploy TD-LTE indoor
network for Expo 2010 in Shanghai
In October 2009, ZTE signed
trial agreement with Etisalat, the
largest international operator in the
Middle East. And in November, ZTE
was invited by SingTel, a leading
multinational operator in the AsiaPacific region, to participate in the
united LTE test. The trials, which are
scheduled to commence in the first half
of 2010, will take place over a period
of six to nine months.
In June 2009, Gartner released
“ S c o r e c a r d f o r Ve n d o r s o f LT E
Network Infrastructure” and graded the
products and services of 10 existing
LTE vendors in the following seven
areas including market understanding,
offering/product strategy, geographic
strategy, sales and marketing strategy,
market responsiveness and track
record, and overall viability to reflect
the comprehensive strength of each
vendor in LTE, and with its continuous
investments in the field of LTE and good
performance, ZTE ranked third globally.
With the aim of becoming one of
the leading manufacturers of LTE,
ZTE will continue to invest in LTE,
contribute to the development of next
generation network together with global
operators, and play a dominant role in
next generation network construction.
ZTE TECHNOLOGIES
January 2010
Focus
L ong Term E volution
--- Imagine Life Now
ZTE Helps CSL Deploy First LTE Commercial Trial Network in Hong Kong
By Tang Yong, Zheng Hong
I
n March 2009, CSL, Hong Kong’s leading mobile
operator, together with ZTE, announced that they had
deployed the world’s first large-scale HSPA+ all-IP
commercial network with download rates of up to 21Mbps,
which brought a “shock” to the mobile operating market
of Hong Kong. Only half a year later, on Sept 2, 2009,
CSL and ZTE jointly held an event to demonstrate new
LTE technology with peak download rates in excess of
10
January 2010
ZTE TECHNOLOGIES
Leaders from CSL, Telstra and ZTE attend the jointly-held event
120Mbps, and CSL promised to build
the LTE commercial network in Hong
Kong in Q4 2009.
At the event, ZTE revealed details
of the plans for CSL’s Next G network
and demonstrated LTE services to the
friendly users and 150 media reporters
from all over the world. “By using LTE
technology, it only takes 0.5 second to
download an MP3, 5 seconds a music
album, and only 10 seconds a movie
with 100M,” CSL’s Chief Technology
Officer, Mr Christian Daigneault said.
The download speed surprised all the
audience. Mr. Tarek A. Robbiati, Chief
Executive Officer of CSL, said, “LTE
is no longer a lab technology, and we
have experienced its charm today. In
the future, we will work closely with
ZTE to enable the people of Hong
Kong to enjoy the fast and reliable
LTE services anywhere.”
The showcased LTE equipment
looks no different from the 2G/3G
equipment utilized currently by CSL
as it employs ZTE unified Software
Defined Radio (SDR) platform, which
can accomplish smooth network
migration with only software upgrade.
The current CSL 2G/3G network
adopts the SDR technology and
can easily achieve flexible network
upgrade or enable coexistence of 2G,
3G, and 4G systems.
Long-term coexistence of
2 G , 3 G a n d LT E i s a m o b i l e
telecommunication trend, so it will be
difficult for an operator to maintain
its leading position in the new round
of competition. The accelerating
competition, disappointed financial
payback on 3G and global economic
slowdown aggravate many problems
in the telecom industry such as
reduced investment, decreasing
Average Revenue Per User (ARPU),
high maintenance cost of aging
equipment. There are more and
more factors that operators need to
consider when making LTE network
p l a n n i n g , s u c h a s To t a l C o s t o f
Ownership (TCO) savings, investment
protection, easy and flexible operation
and maintenance, compatibility
with other networks and service’s
competitiveness and potential
By using LTE
technology, it only takes
0.5 second to download
an MP3, 5 seconds a
music album, and only
10 seconds a movie with
100M.
ZTE TECHNOLOGIES
January 2010
11
Focus
profitability.
To solve the above problems,
ZTE launches its leading-edge UniRAN solution based on its unified
SDR platform and end-to-end LTE
solutions, which can help operators
stand out in the competitive markets
in the LTE era.
SDR Simplifying Complex Network
SDR is an innovative technology
that leads to a revolution in the
whole wireless broadband field. CSL
deployed ZTE’s state-of-the-art SDR
technology, which not only reflects its
keen pursuit of advanced technology
and high network quality but also
its precise grasp of future technical
development trend. Thanks to SDR,
the maximum download and upload
speeds of the HSPA network have
been improved to 14.4Mbps HSDPA
and 5.76Mbps HSUPA respectively.
In the near future, the network can be
migrated to LTE with only software
upgrade and the people of Hong Kong
can experience the world’s fastest
mobile broadband network.
Mr. Robbiati announced in the
press conference that CSL had
signed a contract with ZTE on LTE
commercial network deployment
at the end of 2009 and the network
would be the world’s first dual-band
LTE commercial network operating
at 2.6GHz and 1.8GHz. “CSL adopts
ZTE unified SDR platform and it can
migrate to 4G network flexibly. The
construction cost will be significantly
reduced and the network construction
speed will be much faster than other
operators,” said Mr. Robbiati.
However, more than a year ago,
CSL faced many challenges. Its
rivals had delivered 3.6Mbps or
even 7.2Mbps HSPA services, while
CSL HSDPA network could only
12
January 2010
ZTE TECHNOLOGIES
support 1.8Mbps. Its leading image
was greatly affected. Even worse,
the high maintenance cost and weak
competitiveness of data services of its
previous four networks, which have
two standards and three bands, stood
in the way of network optimization,
convergence and smooth evolution.
Thus, CSL decided to adopt new
technology to have a thorough
network optimization and upgrade.
It required the supplier to not only
integrate its existing networks into
a single network but also transform
them to HSPA+ and LTE.
After many technical discussions, a
64QAM and MIMO functions, and a
high-speed HSPA+/LTE network will
be launched.
Fast customization Meeting
Customer Needs
Actually there was a small episode
during the cooperation between
ZTE and CSL. In March 2009, ZTE
and CSL announced availability of
the HSPA+ commercial network
with high-speed wireless download
rates of up to 21Mbps. In order to
consolidate its network leadership in
Hong Kong and continuously exceed
customer expectations, CSL decided
It can be expected the coming 4G
technology brought by CSL will lead the wireless
telecommunication market and bring an extremely
fast experience to the people of Hong Kong.
lot of field research and comprehensive
comparison of solutions of different
telecom vendors, CSL finally chose
ZTE’s Uni-RAN solution based on
S D R t e c h n o l o g y. T h e U n i - R A N
solution can accomplish multi-network
convergence and significantly improve
the network performance.
According to the plan, ZTE will
replace the existing 2,800 base stations
with its SDR base stations gradually,
and the replacement process is divided
into 3 stages: In the first stage, ZTE
will use SDR equipment to replace
WCDMA 2100MHz equipment and
establish some new sites; in the second
stage, all the GSM 900MHz and
1800MHZ equipment will be replaced,
and a WCDMA 900MHZ network will
be deployed; in the third stage, the
network will be upgraded to support
to deploy the first LTE network in
Hong Kong. ZTE was under great
pressure at that time as the LTE
standards were just finished. After
thorough communication between
both sides, ZTE committed more
resources on LTE system, spent only
several months to bring out products
and functions ahead of the schedule,
and achieved satisfying results in this
demonstration. Mr Daigneault said,
“ZTE is strong in R&D and quick
in response. We hope for further
cooperation with ZTE. We will build
a large-scale LTE commercial trial
network at the end of 2009.”
It can be expected the coming 4G
technology brought by CSL will lead the
wireless telecommunication market and
bring an extremely fast experience to the
people of Hong Kong.
IMS:
Key in LTE Age
By Chen Dan
E
nd users always expect
to enjoy ubiquitous highbandwidth services through
their mobile phones.
Mobile operators, in order to get an
edge in the competition, are stepping
into LTE testing and deployment
stage with the purpose of providing
high-performance, high-bandwidth
and better user experience for their
customers. They also hope to get an
upper hand in operating LTE networks
and services. In the next three to eight
years, LTE will undoubtedly become an
important enabler in the transformation
of mobile networks.
The high bandwidth of LTE will
result in rapid increase of packet
traffic. Thus higher requirements are
raised for operators’ network resource
management, for example, how to
implement policy-based resource
management, and how to charge
flexibly. The resource management,
traffic control, DPI, and charging
functions have transformed operators
into “smart pipe” providers that have
good service awareness. However,
the operators are not satisfied to be
considered as simple pipe providers.
Most of them still hope to have control
over services, play an even more
important role in the value chain,
leverage the advantage of managing
large user data base, and generate more
revenues from a variety of new service
deployments.
IMS, based on SIP call control
architecture, adopts the separation
of media, services and control that
enables fast deployment of all kinds of
multimedia services through a flexible
and open service platform. Its accessagnostic nature and resources control
features provide the operators with
sources of income from application
services.
ZTE, a global leader in mobile
communications, has rolled out
its IMS solution for LTE access
(see Figure 1) based on the years
of experience in deploying Circuit
Switched (CS), Packet Switched (PS),
and IMS services.
ZTE is capable of delivering endto-end IMS solutions including IMS
core network, service platform, access,
and operations support. It provides
operators with network resources
management as well as self-operating
services. ZTE’s Resource and Charging
Control Platform (ZXUN RCP)
provides resource admission control,
policy and charging control. When there
is heavy LTE data traffic, ZXUN RCP
can coordinate with ZTE’s Call Session
Control Function (ZXUN CSCF) and
ZTE’s Gateway (ZXUN xGW) to allow
real-time services like voice and video
to get the priority in using transmission
resources, thus effectively ensuring
the quality of LTE real-time services.
The Session Continuity Application
Server (SCAS) in Figure 1 is used
to ensure the continuity of voice and
other multimedia services with the
existing CS services. This is especially
important in the initial deployment
ZTE TECHNOLOGIES
January 2010
13
Focus
IM/PS/GM
Media
Sharing
HD Multimedia
Conference
Service
Continuity
IP Network
IBCF
IBGF
PSTN
ZXUN HSS
ZXUN RCP
MGCF
ZXUN CSCF
MGW/
SGW
PLMN
MSCServer /MGW
Other Access
ZXUN iMAC
ZXUN xGW
CS
LTE
Figure 1. IMS solution for LTE access.
stage when the LTE coverage is not so
wide.
Multimedia Services over LTE
As a new wireless broadband
technology, LTE boasts a wireless data
rate comparable to the fastest one so
far supported by the fixed broadband
technology, which can greatly reduce
latency and allow users to experience
quality multimedia services on a
real-time basis. In addition, the
open structure of IMS also helps to
shorten the time required for service
deployment, facilitating operators to
deliver feature-rich services.
Multimedia services are the key
to attracting end users. ZTE’s IMS
provides operators with an ideal
architecture to deploy their owncontrolled multimedia services
and meanwhile it is open to other
application developers that could bring
more varieties of applications.
ZTE’s IMS solution can provide
individuals and enterprise users with
diversified services including highdefinition video conference, video
14
January 2010
ZTE TECHNOLOGIES
surveillance, three-screen (PC, TV and
mobile phone) interaction, multimedia
ring tone, and multimedia called ID.
Apart from the services defined by
the RCS Initiative such as Presence,
Instant Messaging, Media Sharing,
and Network Address Book, ZTE can
also offer file sharing, click-to-dial,
electronic whiteboard service, etc.
To work with Web 2.0, ZTE’s IMS
system also offers open interfaces
for application developer to use the
call control, messaging, conference
capabilities to integrate into their own
applications.
With the launch and development
of LTE mobile phones, multimedia
services over LTE will definitely
become the key to attracting users.
Voice Services over LTE
The high bandwidth, high mobility
and low latency of LTE ensure that
users can enjoy the same voice service
over LTE as over traditional CS
network. In the LTE specifications,
the CS core network is no longer
supported. Even though voice is not the
key driving force for LTE, voice over
LTE is a must because it is still the big
revenue generator. Currently LTE uses
the Single Radio (SR) mode, which
makes it impossible to deploy services
on both LTE and UTRAN/GERAN,
so there are requests for voice handoff
and CS access, especially when
LTE is initially deployed as hotspot
islands. One approach is to instruct
an LTE handset to “fall back” to the
CS network when a voice call is being
imitated or received; another approach
is Single Radio Voice Call Continuity
(SRVCC), which uses IMS system to
perform call anchoring and handover
based on third party call control
mechanism.
Backed by a sound IMS core
network, powerful packet data service
control units ZXUN uMAC and ZXUN
xGW, and the Mobile Service Control
Server/Mobile Gateway (ZXWN
MSCS/MGW) supporting evolution
to LTE, ZTE is capable of delivering
complete voice and multimedia over
LTE solutions, including the CS
Fallback (CSFB) solution and the IMSbased SRVCC solution.
We believe LTE deployment will
boost IMS market. The nature of
IMS allows it to easily fit into LTE
network and create rich services for
end users. ZTE is one of the few
vendors in the world that offer endto-end IMS solutions. In September
2009, ZTE launched its brand-new
ZIMS 2.0 solution, featuring fullservice operation capabilities. It takes
the lead in Chinese IMS market, with
large-scale commercial deployments
throughout the Chinese market. With
numerous innovative and mature
application cases, ZTE has been among
the global mainstream IMS providers.
Third Eye
Gartner’s Dataquest Insight:
Scorecard for Vendors of LTE
Network Infrastructure
June 29, 2009
By Sylvain Fabre, Frank Marsala, Jouni Forsman, Tina Tian, Joy Yang, Akiyoshi Ishiwata
A
n LTE market opportunity
has emerged during the past
two years. Most vendors now
have relatively well-defined solutions,
which are scheduled to be ready for
initial rollout by the end of 2009.
LTE technology may reduce carriers’
operating costs for mobile data —
compared with third-generation (3G)
technology — as data volumes increase
and as mass use of the mobile Internet
is enabled by compatible devices and
fast, low-latency backhaul.
In this document we evaluate
the main vendors of LTE network
infrastructure. Some focus on the
r a d i o c a p a b i l i t i e s o f t h e i r LT E
offerings, while others have a more
comprehensive view including the
evolution of an all-IP core. Other
factors that distinguish one vendor
from another include the scalability,
interoperability and modularity of
their products, their ability to deliver
and deploy networks, their skills
in facilitating carriers’ moves to IP
networks, and their perceived viability
as companies.
Strategic Scorecard for LTE Network
Equipment Vendors, 2009
Gartner rated the qualifying
mobile infrastructure vendors using
seven standard Gartner criteria on
a scale from 1 to 5, with 1 being
best and 5 worst. The seven criteria
include Product or Service, Market
Understanding, Offering/Product
Strategy, Geographic Strategy, Sales
and Marketing Strategy, Market
Responsiveness and Track Record,
and Overall Viability. In addition,
each criterion was given a numerical
weight. The vendors were then ranked
according to overall score, with each
score rounded up to the nearest digit,
and the results color-coded for easier
comprehension.
ZTE TECHNOLOGIES
January 2010
15
Third Eye
Our comparison of LTE vendors
based on these seven criteria yielded
the results shown in Table 1. There
are several types of vendors in the
sample group, and not all are strictly
comparable from the perspective of
LTE offerings. For example, while
Ericsson, Huawei, NSN, ZTE, AlcatelLucent and Nortel (at least until the
NSN transaction goes through) can
be considered end-to-end vendors,
others, like Starent (focused on EPC
core and without a radio offering) and
Motorola (with its own radio product
but an EPC from Starent), are more
specialized. Hence our ratings aim to
capture the overall relative value and
attractiveness of each vendor’s LTE
offering, regardless of the specific parts
of the network being focused on.
Overall Evaluation of Global
LTE Network Equipment Market
Opportunity
Gartner expects that LTE will
become the dominant mobile network
technology and that most network
operators will upgrade to it. But
operators are actively evaluating
multiple technology options. Some may
choose to extend the life of WCDMA
networks by deploying HSPA+, a
technology that could support up to
80Mbps download rates in its most
sophisticated (and costly) configuration,
making it comparable to LTE. This
could delay the need for LTE until LTE
Advanced (LTE-A) or other fourthgeneration (4G) technology options are
more widely available (around 2012).
Evolution from High-Speed Downlink
Packet Access (HSDPA) or HighSpeed Uplink Packet Access (HSUPA)
to HSPA+ could be less disruptive for
operators than moving to LTE, and
potentially cheaper too.
But both HSPA+ and LTE will
require new client devices as well as
upgraded transport infrastructure —
consumer and business customers will
need to be persuaded to upgrade to
high-end handsets and new wireless
broadband modems.
Gartner believes that most operators
will see the marketing benefits
of investing in the latest, fastest
technologies, such as LTE, rather
than taking the incremental step of
upgrading to HSPA+.
Key predictions:
■ LTE will become the dominant 4G
technology for CDMA (3GPP2) and
GSM/UMTS (3GPP) carriers.
■ More than 70% of UMTS carriers
will take every step on the
migratory path, including moving
to HSPA+ and then LTE.
■ No UMTS carriers will change to
WiMAX as their dominant mobile
technology.
■ Over 90% of CDMA carriers will
adopt LTE.
■ Most cdma2000 deployments will
stop at EV-DO Rev. A.
■ More than 90% of WiMAX mobile
carriers will not leapfrog to LTE;
they will consider upgrades to IEEE
802.16m, if possible.
Overview of ZTE LTE Business
ZTE
ZTE receives an overall rating of
Strong for its LTE business.
It has a good set of products.
Its growth strategy is prudent and
sustainable. ZTE is also getting better
Table 1. Strategic scorecard for leading vendors of LTE network infrastructure, 2009
Criterion
Ericsson Huawei ZTE
Nokia
Starent Alcatel
Siemens
Fujitsu Motorola NEC Nortel
Networks Lucent
Networks
Product Service
VS
S
S
S
S
S
S
S
S
SR
Market Understanding
VS
S
S
S
S
S
S
S
ST
ST
Offenng/Product Strategy
VS
S
S
S
S
S
ST
S
ST
SR
Gecgraphic Strategy
VS
VS
VS
VS
ST
VS
S
S
S
S
Sales and Marketing Strategy
S
S
ST
S
S
S
S
S
ST
ST
Market Responsiveness and Track
Record
VS
S
S
S
S
S
S
S
S
ST
Overall Viability
S
VS
S
ST
S
SR
ST
SR
ST
HR
Overall Rating
VS
S
S
S
S
S
S
S
ST
SR
VS=very strong; S=strong; ST=stable; SR=some risk; HR=high risk
16
January 2010
ZTE TECHNOLOGIES
Source: Gartner (June 2009)
at marketing itself outside China,
although its strategy for infrastructure
remains very regional. This regional
focus is partly a positive thing, since
Asia/Pacific generally offers good
growth opportunities for mobile
infrastructure vendors.
ZTE positions itself as an alternative
p a r t n e r f o r o p e r a t o r s f o r LT E
infrastructure. It will mainly focus on
North America, Western Europe, Japan
and China.
ZTE has been involved in LTErelated work for some years. Before
2006, it was involved in R&D work
on MIMO and OFDM technology. In
1Q06, it began participating in research
toward the 3GPP standard. In 4Q06, it
was among the early group of sponsors
joining the Next Generation Mobile
Networks (NGMN) Alliance. In 1Q07,
ZTE began R&D on LTE, and in 1Q08
demonstrated an LTE prototype live
in Barcelona. In 4Q08, ZTE exhibited
a pre-commercial LTE system in
Beijing. ZTE’s plans for 2010 include a
commercial LTE application in the first
half of the year.
The company’s product set includes
the ZTE Unified Radio Sub-System
Platform and OneNetwork platform.
ZTE has several form factors planned
for eNodeBs: distributed, compact,
femtocell and picocell.
ZTE receives a Strong rating for
overall viability. This is the result of a
strong rating for cash flow (cash from
operations as a percentage of revenue
for the past 12 months was 8.4%),
a good rating for profitability (a net
margin of 4.0% in the past 12 months),
a strong rating for revenue growth
(26.7% in the past 12 months), and a
good score for the balance sheet metric
that measures solvency (the current
ratio is 1.41). The company’s strong
financial position has allowed it to
maintain its R&D spending at 10% of
revenue, which should put it in a good
position to capitalize on the growth
expected from LTE.
■
The Impact
■
Although we expect LTE networks
to exhibit multivendor scenarios
in both core and radio networks,
there are too many vendors in
this sector at present. We expect
further rationalization and fewer
vendors as the economic downturn
and the trend for reduced capital
expenditure continue.
■ Since all but one of the vendors
analyzed have a rating of at least
Strong for their products, the choice
of vendor may hinge more on
their perceived overall strength or
risk, rather than on technological
superiority.
■ Only the leading vendors can
sustain the level of R&D necessary
for LTE technology to succeed
while also enjoying the support of
an existing installed base for legacy
revenue. This leaves the door open
■
■
to further mergers and acquisitions.
Ericsson’s LTE business merits an
overall rating of Very Strong.
The LTE businesses of Huawei,
ZTE, NSN, Starent, Alcatel-Lucent,
Motorola and Fujitsu each merit an
overall rating of Strong.
The LTE business of NEC merits an
overall rating of Stable.
The LTE business of Nortel merits
an overall rating of Some Risk.
Conclusion
Ericsson comes out on top in our
analysis of LTE network infrastructure
vendors. Perhaps the most striking
feature of our scorecard is the many
vendors, including two from China,
with overall ratings of Strong. Most of
the vendors analyzed are technically
skilled, so the key differentiator may
rather be the perceived overall risk
profile of a vendor, with the smaller
ones, and those whose financial results
may be a concern, being viewed by
operators as riskier propositions when
it comes to choosing a long-term
partner for LTE.
ZTE TECHNOLOGIES
January 2010
17
Research Note
Pivotal Role of
Heterogeneous Networks in
4G Deployment
By Caroline Chan, Geng Wu
O
ne of the biggest challenges
facing wireless operators today
is the explosion of wireless
data growth, and how their network
can cope with the demand under
CAPEX and spectrum constraints. This
paper describes the issues, solutions
available today, and why an optimized
heterogeneous network is pivotal for
tomorrow’s wireless networks.
Exponential Wireless Data Growth
Wireless service providers worldwide
are struggling under the strain of
unprecedented traffic growth. This
traffic growth is accelerated by the
proliferation of advanced devices,
services and applications. The challenges
facing AT&T in the U.S. market are
well documented as the operator has
struggled to deal with a 5,000% growth
in data over the last three years (AT&T
report on LTE Americas, Sept. 2009).
The traffic demands for mobile
broadband services vary across a wide
variety of devices that can be categorized
roughly in the following categories:
■ Simple feature phones: They are
devices designed primarily for voice
and text-based messaging services.
They play a minor role in the mobile
broadband market.
18
January 2010
ZTE TECHNOLOGIES
■
Smartphones: Devices such as the
Apple iPhone and Google Android
are equipped with larger screens,
longer battery life, advanced OS,
and a broad range of applications ―
all features that encourage higher
data consumption. Cisco Visual
Networking Index report estimated
the capacity consumption of an
iPhone is estimated to be 30 times
that of a simple phone.
■ Connected computing devices:
Examples include dongle and PC
card connected devices, embedded
laptop devices, netbook, tablet PC
and MID. Because of their large
form factor and rich application
environments, computing devices
tend to consume larger service
bandwidth than mobile devices.
According to research published by
the Cisco Visual Networking Index
report, a laptop can consume up to
450 times more bandwidth than a
simple phone and 30 times more
than a smartphone. As laptop and
netbook adoption continue to rise,
primary mobile broadband for all
devices will further fuel the wireless
data growth mega-trend.
Operators are well aware of these
challenges. Dick Lynch, CTO of Verizon
Corp, the largest wireless service
provider in the US, recently projected
the following at the LTE Americas
Conference in Sept 2009 (see Figure 1).
Service Providers Options
Terabytes(000)
Dick's
projection
4,000
3,000
LTE
2,000
3G
1,000
0
2010
2011
2012
2013
2014
Source: Verizon Wireless (recreated by SRG)
Figure 1. Exponential wireless data growth.
With traditional network design
strategies, mobile service providers
essentially have three primary capacity
expansion tools, including:
■ Increase macro cell site density:
Each cell split would require
regulatory approval, new sites and
civil work.
■ Technology upgrade to OFDMAbased 4G technologies WiMAX and
LTE: To achieve a 3 to 4x increase
in capacity.
■ Expand radio spectrum resources:
Acquiring new spectrum can be
expensive, limited by availability
and subject to government regulatory
timelines.
In each case the backhaul
transmission network may also need to
be upgraded accordingly.
The traditional capacity expansion
solutions require high CAPEX
investment, and Intel research
(technology upgrade data from 3GPP,
WiMAX Forum; backhaul and spectrum
data from ABI, 10GEA) shows that
they will not meet the network capacity
demand forecasted through 2015 (see
Figure 2).
To address these challenges, service
providers are increasingly adopting a
heterogeneous network architecture as
depicted in Figure 3.
The heterogeneous network can
consist of different cell scales which
range from macro to micro, pico and
even femtocells, potentially sharing
the same spectrum. Nodes can deploy
different access technologies such as
WiMAX and WiFi, over both licensed
and unlicensed bands.
The biggest advantage of a
heterogeneous network is the significant
gains in network capacity via aggressive
spatial spectrum reuse and use of
unlicensed bands. For example, cochannel femtocells can provide linear
gains in air interface capacity with
increasing number of femto-APs in a
hybrid deployment. While the macro
network provides coverage, small cells
(pico and femto) are better suited for
capacity infill and indoor coverage.
In addition, the small cells require
no tower infrastructure or low lease
cost, therefore drastically cutting the
operational and capital expenditures (see
Figure 4).
(thousands of users), micro
(hundreds of users), pico (tens of
users), femto (<10)
■ Licensed and unlicensed spectrum
■ Nodes owned and operated by
service providers, enterprises and
consumers
■ Wired or wireless backhaul with
guaranteed QoS or best effort QoS
■ A range of multimode devices
including handhelds, laptop,
netbook, MID, tablets, connected
consumer electronics and machineto-machine nodes
This type of network poses a new set
of challenges including:
■ Cross tier interference: For example,
a dense femtocell deployment poses
significant interference to macro
cells. While interference to data can
be addressed via intelligent use of
Fractional Frequency Reuse (FFR),
interference to control signals
Traffic
in 2015
Heterogeneous Network Challenges
As described in previous paragraph,
the heterogeneous network consists of
a garden variety of nodes, each with
potentially different RF and network
characteristics:
■ Coexistence of numerous access
technologies
■ Different network scales: macro
Traffic
today
Capacity Upgrade
Add Upgrade Split cells Capacity in
today backhaul spectrum/ tech
2015
bandwidth
Figure 2. Wireless data traffic vs. network
capacity in typical congested
metro.
1,00
Fem to/WiFi-AP
(Offload Macro-BS)
Backhaul transmission
0,80
Site buildout, installation+lease
Radio equipment, O&M, power
0,60
Macro-BS
Fem to-AP
(Indoor coverage & offload macro-BS)
Pico-BS
(Areal capacity)
0,40
0,20
Client Relay
Wireless Access
Wireless backhaul
Relay
Coverage Hole
Figure 3. Heterogeneous network architecture.
0,00
Macro
Micro
Pico
WLAN
Figure 4. Cost structure CAPEX+OPEX (new sites).
ZTE TECHNOLOGIES
January 2010
19
Research Note
requires new mechanisms.
Mobility management: Handover
across small cells at moderate to
high speeds hogs network resources,
and can degrade user experience if
not managed well. Heterogeneous
networks must adopt an intelligent
mechanism to manage inter or intratier handover. We expect multimode
devices themselves to play a more
significant role in mobility algorithm
implementation.
■ Self-Organizing Networks (SONs)
are essential for consumer deployed
nodes like femtocells, and are
important for managing inter-tier
deployment.
■ Security management between nodes
of different ownership (consumer,
enterprise, operators).
■ Service continuity, QoS management
and delivery across multiple tiers
are essential for high performance
and high capacity heterogeneous
networks.
■
What Is Next
The Intel Labs has been doing
extensive research to tackle these
challenges. The team recently submitted
a contribution in the IEEE 802.16
Plenary that outlines a number of key
areas the IEEE community should focus
upon in the next generation of 802.16
technology development, including:
(1) Develop co-operative WiMAX
and WiFi networks to create virtual
WiMAX carriers by aggregating
spectrum across licensed and unlicensed
space.
■ Create virtual WiMAX carriers
through WiFi, for example, via an
integrated WiMAX/WiFi femtocell.
■ Use the additional spectrum to
improve diversity, and code rates
with incremental redundancy.
■ Use the additional spectrum to
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ZTE TECHNOLOGIES
transmit independent data streams to
increase peak throughput.
(2) On the network side, provide
connectivity and service continuity
between different access protocols in the
network.
■ D y n a m i c a l l y s w i t c h b e t w e e n
WiFi and WiMAX to minimize
interference and to optimize capacity
and coverage.
■ Map applications to different access
technologies based upon QoS
requirements.
(3) On the client side, develop client
co-operation where clients jointly
transmit and/or receive information in
wireless environments. For example,
service providers may deploy clusters
of stationary/nomadic WWAN clients
with WiFi P2P connectivity. The idea
is to exploit client clustering and P2P
communication to transmit/receive
information over multiple paths
between the base station and client. This
creates the potential for improvement
in throughput, capacity and reliability
without increased infrastructure cost.
This solution is particularly interesting
for M2M communications.
(4) On the radio access network,
deploy MIMO.
■ Network MIMO algorithms enabled
by central cloud processing
■ Cooperative MIMO and Distributed
Antennas across tiers in the
heterogeneous network
The proposals listed above are
only intended to be a starting point
for the development of future wireless
broadband networks. Intel is also
developing and evaluating other forward
looking techniques such as interference
alignment and innovative radio access
network architectures. By sharing ideas,
Intel hopes to galvanize the ecosystem
partners to join in the exploration
of enhancing the performance and
cost structure of next generation
wireless networks to accommodate
the co-existence of a variety of access
standards, multimode devices and
disparate spectrum.
Conclusion
Mobile voice service is already
considered a necessity by many
consumers and is quickly moving to a
commodity status in mature markets.
Mobile data driven by consumer
demand for rich mobile Internet data
is now the primary driver for both
consumer purchasing and network
operator deployments. Mobile
subscribers desire the same rich content
available on their fixed broadband
Internet connections ― including
streaming video ― to be available
on their mobile devices. Mobile
M2M connections will also increase
wireless data consumption. As wireless
broadband continues to be rolled out
worldwide, the demand for wireless data
shows all signs of accelerating demand.
Heterogeneous networks hold great
promise to meet consumer demand,
while providing optimum total cost of
ownership for the network operators.
However, these networks have many
technical challenges at the air interface
and network layers which the wireless
community is working to address in
standards forums. Heterogeneous
networks will enable the cost effective
deployment of high performance
networks in order to bring wireless
broadband to every corner of the globe.
(Caroline Chan, Director of Wireless
Market Development, Wireless Program
Office, Intel; Geng Wu, Director of
Wireless Technology, Intel Labs)
Broaden Your Way with
Resilient WiMAX Network
By Liu Min, Xu Ruixue
I
n recent years, as the ARPU value
of voice services continues to
decline, wireless broadband data
services have become the new growth
magnet that network operators are
looking for. According to Cisco’s 2009
analytical data, wireless broadband
data services will show a hundredfold
growth trend and a tremendous
potential during the next five years.
It has been proved that large-screen
terminals like downsized Laptops,
UMPCs, IPhones, and Smart Phones
that are emerging one after another,
have lead to a sharp increase in the
demand for wireless broadband data
services. 3G networks have now been
overwhelmed and wireless bearer
networks with higher speeds are
needed.
WiMAX emerges to meet this
demand, serving as an edged tool
for emerging operators to rapidly
deploy new networks, seize market
opportunities, and gain an upper hand
in the competition; and also as an
effective means for traditional large
fixed-line operators to retain and
expand existing user groups, improve
ARPU value, and strengthen their
leading positions.
ZTE TECHNOLOGIES
January 2010
21
Research Note
Figure 1. Site distribution of an HSPA+ network in Hong Kong.
Different from the previous data
value-added technology, WiMAX
is designed from the ground up to
provide broadband data services. Its
very nature in network construction
follows the characteristics of
broadband data services. Firstly,
capacity is a KPI to assess network
quality and its macrocell construction
focuses on balancing network capacity
with network coverage. WiMAX can
stand out from the market competition
only if it provides a DSL-like rate
that is several times higher than
HSPA. Secondly, major services (like
Internet) and terminal modes (like
laptops and PCs) have determined
that the dominant service models
for WiMAX are fixed and nomadic
access, which allow a discontinuous
and uneven traffic distribution. Indepth hotspot coverage has become the
foremost issue to be considered when
designing a WiMAX network. Based
on these two characteristics of data
network construction, ZTE put forward
its innovative concept of building a
resilient WiMAX network that has an
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ZTE TECHNOLOGIES
insight into the operators’ needs from
the perspective of hybrid macrocell
networking and layered micro/pico/
femtocell networking.
Hybrid Networking Adaptive to
Various Scenarios
From the above analysis, we
can see that one characteristic of
wireless broadband data network is
the uneven geographical distribution
of traffic demand, namely 70% of
traffic is concentrated in 30% of
the geographical area, such as the
CBD, residential areas, hotspots,
etc. Therefore, that 30% of the
geographical area is a major source of
profit for the operator. We call it the
value area and the remaining 70% is
the non-value area. Figure 1 shows the
site distribution of an HSPA+ network
in Hong Kong (yellow dots represent
sites). It is very clear that 50% of its
sites are deployed and distributed in
the Golden Bowl area, covering less
than 5% of the whole networking
area, which can ensure adequate
competitiveness by providing an
average flow of 6Mbps per user.
Clearly, traffic features are different
in the value area and the non-value
area. The value area enjoys a high
intensity of users and a gathering of
high-end users. What the operator has
to resolve is Internet quality. Therefore,
large capacity is the key to meeting
the users’ needs in this area. However,
as the non-value area is scarcely
populated, it is more important for
users to get access to the Internet
than to enjoy high transmission rates.
Therefore, ensuring wide network
coverage is the core factor in this
area. Considering different core needs
in the value and non-value areas,
it is necessary to adopt the hybrid
networking to enable the optimum
balance of coverage and capacity.
For densely populated or valued
urban areas, we can use capacity
density, the ratio of network capacity
against coverage area, to accurately
reflect end-user service experience.
The simulation results show that with
the same multi-antenna technology
and signal path environment, MIMO
2T2R boasts about 72% higher
capacity intensity than MIMO 4T4R,
meaning that MIMO 2T2R can provide
a higher average throughput per unit
area while offering a higher download
flow (34.3% higher) to edge users.
Therefore, within the value area, the
2T2R networking can achieve the
optimum balance of capacity and
coverage to meet the key needs of
users for high capacity.
For scarcely populated suburban and
rural areas, or non-value areas, network
construction aims at maximizing the
coverage area, reducing the number of
sites deployed and lowering the Total
Cost of Ownership (TCO). Because
of the gap in transmit power between
Base Stations (BSs) and terminals,
Macro
Micro
Pico
Femto
Figure 2. WiMAX layered architecture.
the bottleneck that restricts network
coverage lies in the uplink. It has been
proved that the best way to improve
uplink coverage and achieve a balance
between the uplink and downlink
coverage is to adopt asymmetric 2T4R
(4Rx against 2Tx provides 4.5dB
antenna gain and 40% reduction of
sites) or 4T8R (8Rx against 4Tx means
2–3dB antenna gain and 30% reduction
of sites). In addition, high-gain
terminals and ultra-far area coverage
solutions are also used to effectively
enhance network coverage.
The hybrid networking can not only
ensure large capacity for microcells in
the value area, which helps to improve
user experience, but also achieve wide
coverage for macrocells in the nonvalue area, which helps to reduce
TCO. Therefore, it is the preferred
solution for operators to optimize the
whole network planning and increase
their Return On Investment (ROI).
Layered Architecture for Smooth
Capacity Unloading
Though the hybrid networking
balances macrocell capacity and
coverage, another problem emerges ―
how to extend the hotspots coverage
against the uneven distribution of data
services. Layered architecture is the
optimal solution for this problem.
Layered network architecture is
similar to the “heterogeneous network”
advocated in the industry. Its main idea
is that network capacity, especially
large capacity in hotspot areas, can not
be solely carried by macrocells, but be
unloaded gradually at different layers
through the layered stack of micro/
pico/femtocells. As shown in Figure
2, micro/pico/femtocells are layered
and complement one another to build
a resilient network capable of flexible
capacity expansion.
The layered network architecture
has advantages over traditional
macrocell capacity unloading. Firstly,
it is flexible. As wireless data network
services are unevenly distributed, the
network capacity can by no means
be increased evenly across the whole
network. Instead, hotspot areas would
become the first to have insufficient
carrying capacity; micro/pico/femto
BSs could be deployed on demand
to make full use of every space.
The BS size (micro/pico/femto) is
flexibly chosen according to the traffic
intensity and coverage. Secondly, it
generates less interference. Micro/
pico/femto BSs have small, easy-todesign transmit power that can greatly
reduce the interference to macro BS.
Thirdly, it has low deployment. The
cost of micro/pico/femto new BS sites
is far lower than macro BS sites.
Indoor coverage has attracted more
and more attention from operators
because it is the most important hotspot
coverage. According to the statistics
of Japanese operator NTT DoCoMo,
although the indoor coverage occupies
only 20% of the entire coverage area,
over 70% of data services, especially
high-speed data services occur indoors.
The quality of indoor coverage directly
influences operators’ competitiveness.
Because WiMAX utilizes higher
frequency bands, it has more blind
spots in indoor coverage that can
not be easily solved through outdoor
macro BSs when compared to 2G and
3G networks. Considering that indoor
vertical capacity intensity is several
or even dozens of times higher than
that of outdoors, and that the wireless
environment is complicated, it is
practical to deploy several pico BSs
at every layer to fully absorb capacity.
The three-dimensional in-depth
coverage of buildings can be achieved
through the co-frequency reuse among
different layers.
Conclusion
ZTE has been committed to
developing a full range of custommade WiMAX product series including
2T2R macro, 2T4R macro, 4T8R
macro, micro, indoor and outdoor
pico BSs, and delivering end-to-end
WiMAX solutions. Using the hybrid
and layered networking, it helps
operators build WiMAX resilient
networks that can effectively improve
their ROI.
ZTE TECHNOLOGIES
January 2010
23
Solution
Intelligent CDMA Network Solution
Boosting Operators’ Competitiveness
By Dai Ronghui
W
ireless communications
belong to capital intensive
industry due to the massive
cost inputs needed to support the whole
network lifecycle. Mobile operators’
initial Capital Expenditures (CAPEX)
for wireless network construction
only occupy a small fraction of their
Total Cost of Ownership (TCO),
while the cost inputs on operation and
maintenance after the network is put
into operation occupy most of their
TCO.
Due to the increasing fierce
competition in the wireless market,
the operators’ major concerns are how
to optimize their cost structure and
quickly expand their user base. Based
on its insight into the needs of CDMA
operators, ZTE has rolled out its
intelligent CDMA network solution that
offers intelligent capability throughout
the whole network lifecycle including
network planning, deployment,
operation and maintenance, and
optimization. The solution helps CDMA
operators reduce their CAPEX, optimize
their cost structure and enhance their
market competitiveness.
simulation precisely and scheme
out the best network configuration
based on full consideration of all
the constraints in network capacity,
coverage, environmental factors, and
investment budget. ZXPOS CNP1 has
the following attractions.
Auto network-topology design: It can
improve the efficiency and quality of
initial network planning while taking
into consideration all the constraints in
network capacity, coverage, investment
cost, and site utilization.
Intelligent carrier planning, PN
planning and neighbor cell planning:
It can automatically calculate out
the related system parameters based
on the network topology, so as to
maximally improve the efficiency of
network deployment, expansion and
optimization.
Intelligent Network Planning
Network planning and simulation
is the fundamental work for wireless
network construction. ZTE provides
intelligent network planning tool
(ZXPOS CNP1) that can help operators
implement network planning quickly
and accurately, conduct network
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January 2010
ZTE TECHNOLOGIES
Figure 1. Intelligent network deployment.
Auto module tuning: It can conduct
module tuning in an automatic and
batch manner based on the drive test
data, so as to achieve low-cost network
planning.
Adaptive propagation model: It can
implement increasing-precise iterative
network planning in an efficient and
intelligent manner.
Intelligent Network Deployment
Engineering progress is quite
important in deploying a CDMA
network. In order to speed up the
engineering progress while guaranteeing
the network quality and reducing
personal error, ZTE has developed a
series of intelligent tools for network
deployment that can ensure the network
is well commissioned on schedule (see
Figure 1).
Auto conversion of planning data:
The Office Dependent Database (ODD)
tool enables parallel processing. The
network planning department starts
to prepare planning data while the
engineering department is conducting
site debugging and installation; as
soon as the engineering department
finishes its job, the network planning
department can write the data into the
ODD and input them into the OMC.
The ODD tool helps to improve work
efficiency by 20 times and it can also
avoid errors possibly arising from
manual input.
Auto data integrity check: The
OMC checks the integrity of imported
configuration data based on certain
rules and eliminates configuration
errors at the earliest time possible.
Auto configuration of IP link:
Because the Abis link supports
DHCP, the IP address of BTS can be
acquired automatically instead of being
configured manually at the BTS site,
which greatly improves efficiency of
site deployment.
Intelligent Network Operation and
Maintenance
In order to help the operators better
operate and manage their networks,
ZTE’s intelligent multi-mode CDMA
network solution offers the following
functions.
Intelligent fault isolation and selfrecovery: The faults occurred in the
network elements, links and modules
can be isolated and self-recovered
automatically, which enables the
network to operate smoothly with little
manual intervention.
Intelligent upgrade: The automatic
one-key upgrade can improve upgrade
efficiency and reduce the risks.
Intelligent energy-saving and
emission-reduction: It can save energy
efficiently and reduce network OPEX.
■ Intelligent carrier adjustment:
Adjust the number of carriers
output by BTS based on the cell
traffic change, and close the carriers
that are not in operation to reduce
power overhead. For example, the
power consumption for the 2-carrier
3-sector configuration can be
reduced by 15%.
■ I n t e l l i g e n t p o w e r a m p l i f i e r
shutdown: Shut down the power
amplifier when the Abis link of
BTS breaks, which can transfer
the terminal to the operating BTS
and avoid unnecessary power
consumption. This technique is
widely applied in China, India,
Southeast Asia and Africa.
■ Intelligent temperature control:
Reduce the operating time of
air conditioner to achieve the
substantive saving of power
and BTS environment control.
Averagely, in more than 80% time
of a year, the natural ventilation
technique can be used to replace the
air conditioner, which brings up to
70% energy savings.
■ I n t e l l i g e n t p o w e r s u p p l y
management: Turn on and off the
rectifier module automatically based
on the output current and the number
of operating rectifier modules, and
make the power supply system
work with a high efficiency of 50–
85%. This technique improves
power efficiency and brings energy
savings.
Intelligent Network Optimization
With the increase of subscribers and
the commercialization of 3G networks,
higher requirements are raised for
network optimization. There are urgent
demands for interoperable, automatic,
intelligent and visualized optimization
tools. To meet these requirements, ZTE
has developed its intelligent network
optimization system.
ZXPOS software tool suite (CNT/
CAN): It can implement data mining
based on large amount of statistical
data; make an intelligent analysis of
network problems and give suggestions
for improvement; provide enterpriselevel integrated report; support
conventional network KPI optimization;
focus on user experience enhancement;
and support automatic neighbor cell
optimization and auto PN optimization
for different scenarios such as network
expansion and swapping.
Call Detail Trace (CDT): CDT traces
the key data of each call made by
each user in the current access system,
including the wireless environment for
user access and the key data handled by
the internal system in the access process.
Innovative T-phone driver test tool:
Due to the complicated operation,
high cost and small coverage of the
traditional driver test tool, ZTE has
developed handheld T-phone drive test
tool. With a single intelligent T-Phone,
network optimization engineers can
collect all kinds of wireless data and
use CNT/ANA to analyze them. The
professional drive test can be performed
at anytime and anywhere.
Conclusion
Intelligent network is an important
trend for wireless network evolution.
Improving efficiency and saving energy
have become the focus of all operators.
Based on its insight into the needs
of clients, ZTE put forward a whole
package solution for intelligent CDMA
operations, helping operators reduce
their energy consumption, lower their
operation costs, and boost their market
competitiveness.
ZTE TECHNOLOGIES
January 2010
25
News Brief
ZTE Partners with SingTel to Run LTE Trials
Company has secured 10 LTE contract wins and/or trials
to date
“Innovation, Green,
Commitment”
ZTE Celebrates Its
10th Anniversary in
Indonesia
11 December 2009, Jakarta ― ZTE
Indonesia announced its 10th Anniversary
of operations in Indonesia. During this
period, ZTE Indonesia has supported
Indonesia with implementation capabilities
(for mobile and fixed networks), service
solutions, applications, sustainable R&D
capability and services for customers.
Besides offering a unique and innovative
product portfolio, ZTE has also forged
strategic partnership with local entities
including telecommunication providers,
government, private sectors, and
education institutions to shape the IT and
telecommunication landscape in Indonesia
as well as contributing to its Indonesian
stakeholder communities through social
responsibility initiatives.
During its 10 years of operations, ZTE
has set up six regional offices in Indonesia
including in Jakarta, Surabaya, Central
Java, Bandung, Kalimantan, Sulawesi and
Sumatra. Its head office in Jakarta is also
the office of ZTE’s Asia Pacific regional
division platform.
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January 2010
ZTE TECHNOLOGIES
1 December 2009, Shenzhen, China
― ZTE announced that it will collaborate
with SingTel to carry out LTE trials in the
Philippines market. The two companies
also agree to work on long-term planning
for LTE network infrastructure as well as
strategic management of the network. LTE
is forecasted to become the dominant 4G
technology for CDMA and GSM/UMTS
carriers.
The trial is scheduled to run for six to
nine months starting early 2010 in order
to meet the strong local market needs for
broadband and high-speed network access.
ZTE has been in partnerships with
different operators worldwide including
Telstra’s CSL, Telefonica, SingTel and
China Mobile, securing a total of 10
LTE contract wins and/or trials to date.
By leveraging its expertise in complex
network construction and world-class
product quality, the LTE trials ZTE
has been running with different global
operators has helped the company
successfully penetrate into various highend overseas markets including Spain,
North America and Hong Kong, making
it one of the key equipment providers
helping to propel 4G LTE network
development.
ZTE Achieves Industry-High TD-LTE Network
Downlink Speed of 130Mbps
Company helps to drive the development of LTE TDD IODT
between industry and chip manufacturers
10 December 2009, Shenzhen, China
― ZTE announced that it has successfully
d e m o n s t r a t e d i t s T D - LT E n e t w o r k
technology and achieved a downlink
speed of 130Mbps, the highest level in the
industry. ZTE is the first company to reach
the theoretical limit of TD-LTE throughput
in downlink. Utilizing third-part terminal
testing tools, ZTE conducted the tests
using its system products including EPC,
eNodeB, etc in Guangzhou in November.
ZTE has created a simple and smooth
transition path for operators to move to
LTE through its mature and stable SDR
base stations. Networks can be upgraded
from TD-SCDMA to TD-LTE or to TD-S/
TD-LTE dual-mode through a simple
software upgrade, saving operators time
and money. At the present time, there
are more than 200,000 sets of ZTE SDR
products running throughout the world,
including in China mainland, Hong Kong,
India, Chile and other countries. In May
2010, ZTE and China Mobile will jointly
deploy a TD-LTE network at the Expo
News Center for the World Expo Shanghai
2010.
ZTE Introduces GC990 to Continue
Its Success in the Mobile Market
11 December
2009, Jakarta ― ZTE
launches its latest
QWERTY and dualmode dual-on handset;
ZTE GC990 will give
more options to the
market. ZTE continues
its success in the
mobile market by launching a device that has high specifications with
affordable price.
The new handset is designed with the latest technologies and
features that enable users to enjoy and experience mobile Internet
access and latest mobile applications. With its slim appearance, it will
represent a fashionable yet functional handset since it is equipped
with QWERTY keyboard with both GSM and CDMA frequency. The
dual-mode function will get everything easier and more efficient. This
product is targeting the youngsters since it has trendy, fast and user
friendly features.
E-Plus Group and KPN Group
Belgium to Significantly
Expand 3G Networks in
Cooperation with ZTE
23 December 2009, Belgium ―The E-Plus Group and KPN
Group Belgium have selected ZTE to supply HSPA-enabled 3G
equipment for further expansion and technical upgrade of their
mobile networks. ZTE will support both operators in all aspects of
their customer-oriented voice and data network expansion strategy,
focusing investment in the right technology at the right time.
In cooperation with ZTE, E-Plus Group and KPN Group
Belgium plan to further expand their 3G networks over the next
years. With ZTE’s future-proof technologies the operators will
offer mobile data services at speeds up to 21.6 Mbps and ensure a
faster roll-out of mobile broadband coverage at significantly lower
costs. Furthermore ZTE’s technology affords an easy and fast
integration of future data acceleration standards in the new network
infrastructure in Germany and Belgium.
ZTE Collaborates with China
Telecom to Build IMS Network
Solution
3G infrastructure provides full-range of
services to meet local market needs
30 November 2009, Shenzhen, China ― ZTE announced
it has partnered with China Telecom to build the operator’s IP
Multimedia Subsystem (IMS) in five costal provinces of China
among seven key locations, as part of its 3G network infrastructure
plan. Under the construction plan, ZTE will provide end-to-end
IMS solution for China Telecom to deliver a full-range of services
that will meet local market needs.
As one of the key partners of China Telecom in building its
core network, ZTE has been selected to provide various critical
solutions ranging from PSTN to Softswitch and IMS. On April
10, 2009, ZTE successfully conducted the first IMS-based mobile
video telephony call on its CDMA EV-DO network, making it first
call of its kind in China.
ZTE Partners with China Mobile
to Complete Industry-First
Commercial IMS-Based HD Video
Conference System
Comprehensive features meet market needs
and help operator reduce CAPEX and OPEX
27 November 2009, Shenzhen, China ― ZTE announced that it has
completed the industry’s first commercial IP Multimedia Subsystem
(IMS)-based high definition (HD) video conference system for China
Mobile. This industry breakthrough announcement was made at the
2009 IMS Forum in Beijing, China.
The IMS-based commercial HD video conference system has been
integrated in China Mobile’s IMS office network to help reduce China
Mobile’s CAPEX and OPEX through unified network operations and
easy maintenance.
The system enables China Mobile to enjoy converged multimedia
conference functions via various terminals, including fixed line
telephones, TD-SCDMA handsets, and desktop soft-clients.
ZTE TECHNOLOGIES
January 2010
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