course, the notion of multicasting a single video or audio stream to
multiple devices sounds similar to the way TV and radio towers broadcast
their programming. How does LTE Broadcast differ from previous attempts
at mobile TV broadcast?
For example, LTE network can broadcast
“interactive video,” said Karam. Cellular operators can send the same
event, the same movie “on demand,” without killing their network.
Another pro for LTE Broadcast is that it is based on the eMBMS technology, standardized for LTE.
previous mobile TV broadcast efforts that required a host of new
handsets based on fragmented mobile TV broadcast technologies, eMBMS is
standardized. It’s a part of LTE Advanced.
previous mobile TV broadcasts that depended on a whole new network
infrastructure (everyone was racing to build more towers specific to
mobile TV broadcasting), LTE Broadcast uses the LTE radio
infrastructure. If an operator wants to get into the broadcast business,
the infrastructure is largely in place, although some upgrades to the
network core may be necessary.
Qualcomm is already on the record with its commitment to supporting eMBMS in their future radio chip.
competing with Qualcomm head to head,” said Karam. The company’s
technology, compliant with the Release 10 enhancements for eMBMS,
supports multiple concurrent sessions for multicast traffic along with
unicast traffic, on both TDD and FDD networks. It also provides support
for architectures combining LTE and Wi-Fi, and a standardized interface
to third-party eMBMS middleware. The Sequans chip, receiving eMBMS
packets, demodulates and de-packetize eMBMS signals and hands them off
to a video decoder.
The successful interoperability testing of
Alcatel-Lucent’s LTE infrastructure equipment is especially significant
to Sequans, as it “assures operators that the solution works end-to-end and is commercially viable,” said Karam.
The very idea of LTE
Broadcast isn’t just a “maybe-in-the-future” scenario. During the
International Consumer Electronics Show 2013, Verizon CEO Lowell McAdam
mentioned in his keynote that Verizon hoped to have the technology in
place to “broadcast” the biggest U.S. sporting event, the Super Bowl, in
2014. That technology is LTE Broadcast.
Sequans expects its
baseband chip -- built in 40-nm CMOS at Taiwan Semiconductor Manufacturing
Co. -- to be used in high-end handsets, USB dongles, customer premise
equipment and consumer electronic devices such as media tablets, gaming
and LTE-enabled cameras. Karam sees ample opportunity for its LTE-only
chip -- including the China Mobile’s TD-LTE market. Sequans last year
announced its partnership with Nationz Technologies Inc., China’s
leading supplier of RF chips. The companies have been working together
to develop dual-mode TD-SCDMA/LTE solutions.
Nationz and Primemobi, China’s leading cloud computing service provider,
both Sequans device partners in China, won significant portions of
China Mobile’s contract for the next large-scale trial of TD-LTE
technology in China, which started in the fourth quarter of 2012.