Companies to Work Closely on Performance Testing and
                  Prototyping of TDD-LTE Devices

PARIS and BELLEVUE, Wash., May 7, 2012 (GLOBE NEWSWIRE) -- 4G chipmaker
Sequans Communications S.A. (NYSE:SQNS) and Clearwire (Nasdaq:CLWR), a
leading provider of wireless broadband services, today announced an
agreement to collaborate on LTE for the purpose of accelerating the
availability of LTE devices for Clearwire's planned TDD-LTE network and
to optimize the user experience for Clearwire's customers. The two
companies will work together on performance testing and certification,
standards development, and the creation of devices to support
multi-band, multi-mode TDD-LTE and FDD-LTE solutions.

"Clearwire is a 4G leader with big plans for TDD-LTE where it is
establishing strategic partnerships around the world to develop and
strengthen the TDD-LTE ecosystem," said Georges Karam, Sequans CEO.
"Continuing the successful relationship begun under their current 4G
network configuration into TDD-LTE makes perfect sense for our two
companies. We are very pleased to continue our collaboration with
Clearwire."

"As one of the largest chip providers for a wide range of devices in
the WiMAX ecosystem, Sequans has been a major enabler of our growth,"
said John Saw, Clearwire's Chief Technology Officer. "We are pleased to
work with Sequans to bring LTE devices to market while also ensuring
that the user experience on our planned LTE Advanced-ready network is
second to none. We look forward to leveraging our successful
relationship with Sequans to develop a new wave of devices for our 4G
future."

Sequans TDD-LTE Leadership

Sequans is one of the early leaders in TDD-LTE chip technology and was
one of the first to provide China Mobile with working silicon for the
launch of the world's first TDD-LTE demonstration network in Shanghai
in May of 2010. Sequans' technology was approved by China's MIIT for
use in China and was also used in one of six major commercial trials
China Mobile has deployed. Sequans' TDD-LTE technology is operating in
commercial networks in Brazil and Australia.

Clearwire LTE and Band Class 41

Clearwire's next-generation LTE Advanced-ready network will operate
according to the 3GPP Band 41 specification, which aligns to
Clearwire's 2.6 GHz spectrum frequency. Clearwire's LTE network is
expected to be a major advancement over the current LTE networks
deployed in the U.S. because it will be designed to provide far more
broadband capacity than is possible with today's other 4G networks.
With more than 160MHz of spectrum available in the 100 largest markets
in the U.S., Clearwire's LTE Advanced-ready network should position the
company as the clear leader in 4G mobile broadband technology, capable
of serving the current and anticipated future demands of wholesale and
retail customers.

Clearwire expects that multi-band, multi-mode TDD-LTE devices that can
run on its network and other networks will be commercially available in
2013.

About Sequans Communications

Sequans Communications S.A. (NYSE:SQNS) is a 4G chipmaker, supplying
LTE and WiMAX chips to original equipment manufacturers and original
design manufacturers worldwide. Founded in 2003 to address the WiMAX
market, the company expanded in early 2009 to address the LTE market.
Sequans is based in Paris, France with additional offices throughout
the world, including United States, United Kingdom, Israel, Hong Kong,
Singapore, Taiwan, South Korea, and China. www.sequans.com; Twitter:
www.twitter.com/sequans

The Sequans Communications S.A. logo is available at
http://www.globenewswire.com/newsroom/prs/?pkgid=12733

About Clearwire

Clearwire Corporation (Nasdaq:CLWR), through its operating
subsidiaries, is a leading provider of 4G wireless broadband services
offering services in areas of the U.S. where more than 130 million
people live. The company holds the deepest portfolio of wireless
spectrum available for data services in the U.S. Clearwire serves
retail customers through its own CLEAR(R) brand as well as through
wholesale relationships with some of the leading companies in the
retail, technology, and telecommunications industries, including
Sprint. The company is constructing a next-generation 4G LTE
Advanced-ready network to address the capacity needs of the market,
working closely with the Global TDD-LTE Initiative and China Mobile to
further the TDD-LTE ecosystem. Clearwire is headquartered in Bellevue,
Wash. Additional information is available at http://www.clearwire.com.

Forward-Looking Statements

This release contains forward-looking statements which are based on
management's current expectations and beliefs, as well as on a number
of assumptions concerning future events made with information that is
currently available. Forward-looking statements may include, without
limitation, expectations regarding the companies' respective network
development and market launch plans and the provision of wholesale
roaming services under the agreement being entered into. The words
"will," "would," "may," "should," "estimate," "project," "forecast,"
"intend," "expect," "believe," "target," "designed," "plan" and similar
expressions are intended to identify forward-looking statements.
Readers are cautioned not to put undue reliance on such forward-
looking statements, which are not a guarantee of performance and are
subject to a number of uncertainties and other factors, which could
cause actual results to differ materially and adversely from such
statements. For a more detailed description of the factors that could
cause such differences, please refer to the filings made by Clearwire
and Sequans Communications, with the Securities and Exchange
Commission, including the information under the heading "Risk Factors"
in the parties' respective Annual Reports on Form 10-K. The parties
assume no obligation to update or supplement such forward-looking
statements.


CONTACT: Sequans Contacts
         Media Relations:
         Kimberly Tassin, +1.425.736.0569, Kimberly@sequans.com
         
         Investor Relations:
         Claudia Gatlin, +1 212.830.9080, Claudia@sequans.com
         
         Clearwire Contacts
         Investor Relations:
         Alice Ryder, 425-636-5828
         alice.ryder@clearwire.com
         
         Media Relations:
         Susan Johnston, 425-216-7913
         susan.johnston@clearwire.com
         
         JLM Partners for Clearwire
         Mike DiGioia or Jeremy Pemble, 206-381-3600
         mike@jlmpartners.com or jeremy@jlmpartners.com