China Mobile and Ericsson have successfully completed LTE-Advanced TDD trial in the 3.5 GHz band in China
March 03 2015 - 3:30AM
China Mobile and Ericsson have successfully used
the 3.4-3.6 GHz (3.5 GHz) frequency band for testing data speeds,
mobility and TDD carrier aggregation. This LTE-Advanced TDD trial,
which was jointly carried out in January 2015 in China, is using
Ericsson's equipment.
The first phase of the trials was performed at Ericsson's lab in
Beijing. Speeds of DL 223 Mbps were achieved by using carrier
aggregation (20 MHz@3.5 GHz band and 20 MHz@2.6 GHz band), thereby
confirming the potential of 3.5 GHz TDD technology to increase
mobile broadband capacity. Handover was also successfully performed
during the testing, thus confirming the mobility capability and
potential performance credibility. The second phase is the field
trial which has been carried out in February 2015 using China
Mobile's live mobile network and based on Ericsson's TDD 3.5 GHz
radio equipment.
3.5 GHz: an important band to
meet the mobile internet traffic
growth
3.5 GHz provides 200 MHz of spectrum and addresses more than 50% of
TDD licensees. With the maturing ecosystem, 3.5 GHz has been
recognized as a potential global harmonized band for TDD and will
play a key role in meeting the traffic demands for the future and
improving the user experience. Japan has recently assigned 3.5 GHz
(late 2014), and expect to deploy a commercial LTE-Advanced TDD
network in 2016 in this band.
"This TDD testing demonstrated that the 3.5 GHz band can be
successfully used both in stand-alone mode and in aggregation with
existing commercial spectrum band to provide advanced mobile
broadband services using a TDD access scheme for high peak data
rate applications to enhance the user experience and operator's
competitiveness," says Dr. Guangyi Liu, CTO of Wireless Department
of China Mobile Research Institute.
This project has provided an opportunity to gather essential
experience on the ways that future multi-frequency networks could
be optimized from cost and performance perspectives. One of the
most rewarding results of the first step of this trial is the
confirmation that the existing, lower-band network resources can
further utilize 3.5 GHz as addition to the legacy
network.
"This TDD trial also demonstrated that the 3.5GHz spectrum provides
a good solution for MBB end user performance improvements and
capacity expansion, which can satisfy future consumer
needs.
Ericsson is eager to support China Mobile on the trials in the
future and jointly push for the TDD industry eco-system
development," says Micael Narup, Head of Radio Product Management,
Ericsson.
The successful testing results re-confirm that the TDD access
scheme is a promising solution for the 3.5 GHz band to provide
mobile operators with the capability for advanced services and
applications. 3.5 GHz coverage can also be improved with carrier
aggregation of lower frequency bands. The maturity of the 3.5 GHz
LTE-Advanced TDD ecosystem can address the need for increases in
spectrum and promote the development of mobile broadband.
NOTES TO EDITORS
About China Mobile
China Mobile Limited (the "Company", and together with its
subsidiaries, the "Group") was incorporated in Hong Kong on 3
September 1997. The Company was listed on the New York Stock
Exchange ("NYSE") and The Stock Exchange of Hong Kong Limited
("HKEx" or the "Stock Exchange") on 22 October 1997 and 23 October
1997, respectively. The Company was admitted as a constituent stock
of the Hang Seng Index in Hong Kong on 27 January 1998.
As the leading mobile services provider in Mainland China, the
Group boasts the world's largest mobile network and the world's
largest mobile customer base. The Company has been listed in
Fortune Global 500 list for 14 consecutive years, ranking the 55th
in 2014 and the 15th in BRANDZ 2014 ranking. The Company currently
has a corporate credit rating of Aa3/Outlook Stable from Moody's
Investor Service and AA-/Outlook Stable from Standard & Poor's,
equivalent to China's sovereign credit rating,
respectively.
About Ericsson
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PR - China Mobile and Ericsson
LTE-A TDD trial
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