& cplSiteName &

Clearwire Paves Way for LTE in US

Michelle Donegan
LR Mobile News Analysis
Michelle Donegan
3/29/2010
50%
50%

Clearwire LLC (Nasdaq: CLWR) is part of a group of operators and vendors that has asked the 3rd Generation Partnership Project (3GPP) standards body to start work on specs that would allow TD-LTE to be deployed in the US in the 2.6GHz spectrum -- which is now used for WiMax -- in a move that further exposes the operator's interest in the competing proto-4G standard.

The proposal to adopt the 2496MHz-to-2690MHz frequency band in the US for TD-LTE, which was first highlighted on the "LTE Watch" blog, was accepted at a 3GPP meeting earlier this month. The acceptance is significant because it will enable Clearwire and other spectrum holders to deploy TD-LTE, which is the time division duplex (TDD) version of LTE, in the US.

The move is the strongest indication so far that Clearwire is eying the proto-4G technology chosen by its competitors, AT&T Inc. (NYSE: T), T-Mobile US Inc. , and Verizon Wireless -- although they will deploy the frequency division duplex (FDD) flavor of LTE.

The development also comes hot on the heels of Clearwire CEO Bill Morrow's comments at the International CTIA Wireless 2010 show in Las Vegas last week about operators using the same technology sometime in the future. (See CTIA 2010: Hesse – LTE Will Be Bigger But We Are First, Clearwire Is a WiMax Company (For Now), and Clearwire Testing in Silicon Valley as LTE Looms.)

Power in numbers
Clearwire was not alone in asking for the 2.6GHz spectrum to be defined as a TDD band for LTE. Indeed, there was broad industry support for the proposal from other companies, including: Sprint Corp. (NYSE: S), NII Holdings Inc. (Nasdaq: NIHD), China Mobile Communications Corp. , UK Broadband Ltd. , Motorola Inc. (NYSE: MOT), Huawei Technologies Co. Ltd. , TD Tech Ltd. , WiChorus Inc. , ZTE Corp. (Shenzhen: 000063; Hong Kong: 0763), Chinese Academy of Telecommunications Technology , Nokia Networks , Cisco Systems Inc. (Nasdaq: CSCO), Sequans Communications , Alcatel-Lucent (NYSE: ALU), Alcatel Shanghai Bell Co. Ltd. , and Rohde & Schwarz GmbH & Co. KG .

Part of the 2.6GHz band is already specified for TDD, namely the 2570MHz-to-2620MHz band. The new work at the 3GPP will ensure that all of Clearwire's spectrum will have a definition for TD-LTE operation and will get the TD-LTE specs in line with Federal Communications Commission (FCC) requirements as well.

The specifications for the US 2.6GHz band for TD-LTE is scheduled to be completed by March 2011.

However, although the work at the 3GPP will make it possible to deploy TD-LTE at 2.6GHz in the US, Clearwire is committed to WiMax for now. (See Clearwire Can't Stray From WiMax 'Til 2011.)

"Clearwire intends to maintain our 4G leadership position, which requires us to future-proof our network and stay abreast of emerging 4G technologies and evaluate their potential when and if standards are reached," a Clearwire spokeswoman wrote in an emailed response to Light Reading Mobile.

Another boost for TD-LTE?
Beyond the implications for Clearwire's future network technology strategy, adding the US 2.6GHz band to the 3GPP LTE specs could potentially broaden the market for TD-LTE.

TD-LTE is the flavor of LTE that China Mobile will use, although it will deploy the technology at 2.3GHz. The operator is looking to gain support for TD-LTE outside China, so that it is not limited by low equipment volumes and relatively few device choices. (See China Mobile Fast-Tracks TD-LTE , Motorola's Shanghai Hope, China Mobile Selects Sequans for LTE Chips, and ZTE, China Mobile Test TD-LTE.)

For example, India has emerged as a new market for TD-LTE in the 2.3GHz band after Qualcomm Inc. (Nasdaq: QCOM) announced plans to participate in the upcoming spectrum auction in the country. (See Qualcomm Unveils LTE Plans for India, So Who's Pals With Qualcomm?, and India's WiMax Camp Wants Intel's Support.)

— Michelle Donegan, European Editor, Light Reading Mobile

(5)  | 
Comment  | 
Print  | 
Newest First  |  Oldest First  |  Threaded View        ADD A COMMENT
hgmyung
50%
50%
hgmyung,
User Rank: Light Beer
12/5/2012 | 4:40:33 PM
re: Clearwire Paves Way for LTE in US


I appreciate your citing of my blog LTE watch as the source! This is an excellent in-depth article, by the way. - Hyung

kumaramitabh
50%
50%
kumaramitabh,
User Rank: Light Beer
12/5/2012 | 4:40:32 PM
re: Clearwire Paves Way for LTE in US
The smoke is finally clearing on how mobile WiMAX ( specifically OFDMA-TDD) will be used in future mobile devices..or more precisely how the prime spectrum for WiMAX the 2.5 GHz band will be used.
Evan as the WRC07 had adopted OFDMA-TDD as one of the air interfaces which could be used in 3G networks, there were no 3GPP standards which would have permitted it. On the other hand the Mobile WiMAX itself has been handicapped in its use in mobile devices in the absence of full protocol stacks having been specified up to the application layer.
Now the smoke seems to be lifting as Clearwire has now asked the 3GPP to formulate LTE standards in the 2.5 GHz band.Unlike what one might expect, this decision will impact the use of 2.5 GHz spectrum worldwide even as 3GPP provides a standards support for new use of this spectrum.
Michelle Donegan
50%
50%
Michelle Donegan,
User Rank: Light Beer
12/5/2012 | 4:40:23 PM
re: Clearwire Paves Way for LTE in US
Good points. From US perspective, it certainly looks like Clearwire and Sprint and doing more than just thinking about TD-LTE.
Michelle
Michelle Donegan
50%
50%
Michelle Donegan,
User Rank: Light Beer
12/5/2012 | 4:40:23 PM
re: Clearwire Paves Way for LTE in US
Thanks, Hyung!

It's an important development for Clearwire and for TD-LTE.

So, now I'm wondering about the likelihood of the IEEE and 3GPP working together on next-gen WiMax and LTE (802.16m and LTE-Advanced). Is there any chance of that happening?

Michelle
hgmyung
50%
50%
hgmyung,
User Rank: Light Beer
12/5/2012 | 4:40:21 PM
re: Clearwire Paves Way for LTE in US


In my personal view, the chance of LTE and WiMAX being merged even in the future is slim. Technically, even though there are many commonalities between the two standards (OFDM, MIMO, all-IP architecture, etc.), the details, especially at the Physical Layer-level, are pretty divergent (ex. LTE uses SC-FDMA for uplink whereas WiMAX ODFMA). A harmonization may happen in the network level for seamless handover between the two networks but it's pretty much a dual mode type of service just done in a more efficient way. From this perspective, in order for a complete harmonization to happen, one camp pretty much has to dich their previous developments, which seems unlikely. From a political/market perspective, almost all major players in LTE are not active participants of WiMAX (Samsung is an exception), so there is usually some resistence towards WiMAX from the LTE camp. I think VZW CTO's comment during the recent CTIA Wireless 2010 in response to Sprint and Clearwire's call for LTE/WiMAX union (Clearwire CEO mentions that WiMAX could join LTE as one, Verizon Wireless CTO says no way) is somewhat telling of this sentiment. - Hyung

From The Founder
The independent evaluation of Nokia's key virtual network functions (VNFs) was a defining moment for the Finnish giant.
Flash Poll
Live Streaming Video
Executives from Deutsch Telekom, Facebook, AT&T, Vodafone, and Masergy share insights from their company’s major transformation efforts and updates on key issues including open source, managed cloud connections and 5G.
Prepping for the Future: Upskill U Explained
During this short kick-off video, Doug Webster, Vice President of Service Provider Marketing, Cisco, and Light Reading’s CEO & Founder Steve Saunders give an overview of Upskill U.
LRTV Documentaries
Light Reading Hall of Fame 2016

5|23|16   |   05:43   |   (0) comments


Find out who has been welcomed into Light Reading's Hall of Fame this year.
LRTV Custom TV
ZTE TM Forum Highlights

5|23|16   |     |   (0) comments


ZTE showcased its new ICT solutions at TM Forum in Nice.
LRTV Interviews
Gamma's MD on the Emergence of UC2

5|20|16   |     |   (0) comments


Gamma Communications Managing Director David Macfarlane believes the unified communications (UC) market has reached a tipping point.
LRTV Custom TV
The Ultimate 5-Minute Guide to Digital Customer Engagement

5|20|16   |     |   (0) comments


In this short video, you will hear all about how Digital Customer Engagement is the key to meeting customer expectations, keeping them happy, and maximizing revenue. VP Product & Marketing at Pontis, Ofer Razon, breaks down for us the five essential capabilities for successful Digital Customer Engagement. Don’t miss!
LRTV Custom TV
NFV in 2016: Part 1 – NFV Use Cases Get Real

5|19|16   |   05:57   |   (0) comments


Consensus is building around the key use cases for NFV, including managed IP services at the network edge and on customer premises, which can generate new revenues from enterprises/SMBs and consumers; Evolved Packet Core to support LTE migration; and adjacent technologies, such as TAS and IMS, to support VoLTE and next-generation charging and policy control ...
LRTV Custom TV
Nokia's Steve Vogelsang on NFV – Part 3

5|19|16   |     |   (0) comments


Steve Vogelsang discusses the challenges of operational transformation and how Nokia helps its customers. Join Steve at the Big Communications Event in Austin the morning of May 24, on his keynote and optical networking panel.
LRTV Interviews
Level 3: Why UC Is In Demand

5|17|16   |   04:12   |   (1) comment


Andrew Edison, Level 3's senior VP of sales, EMEA region, talks about the drivers of growth in the unified communications services market.
LRTV Custom TV
ARM's OPNFV Action

5|17|16   |     |   (0) comments


At the ARM booth at MWC 2016, Joe Kidder and Bob Monkman speak to Light Reading about OPNFV and their upcoming action.
LRTV Custom TV
Nokia's Steve Vogelsang on NFV – Part 2

5|16|16   |     |   (0) comments


Steve Vogelsang gives advice to service providers on how to move to NFV. Join Steve at the Big Communications Event in Austin the morning of May 24, on his keynote and optical networking panel.
LRTV Interviews
Interoute CTO on NFV's Maturity

5|13|16   |   06:46   |   (1) comment


Matt Finnie, CTO at international operator Interoute, explains how NFV has made life easier in terms of logistics and how Interoute can now enable a 'software-defined moment' for its customers.
LRTV Huawei Video Resource Center
UBBS 2016 Highlights

5|12|16   |     |   (0) comments


Highlights of Huawei's UBBS event in Hong Kong.
LRTV Huawei Video Resource Center
European 2020 Digital Agenda

5|12|16   |     |   (0) comments


Anacom's Fatima Barros discusses the plan to bring ultrafast broadband to Portugal by 2020.
Upcoming Live Events
May 24-25, 2016, Austin Convention Center, Austin, TX
September 13-14, 2016, The Curtis Hotel, Denver, CO
December 6-8, 2016,
June 16-18, 2017, Austin Convention Center, Austin, TX
All Upcoming Live Events
Infographics
A new survey conducted by Heavy Reading and TM Forum shows that CSPs around the world see the move to digital operations as a necessary part of their overall virtualization strategies.
Hot Topics
WiCipedia: Short Skirts & Back-Up Plans
Eryn Leavens, Special Features & Copy Editor, 5/20/2016
Nokia Plays It Smart With Major Mobile Devices Brand Deal
Iain Morris, News Editor, 5/18/2016
Ingenu Revs Up IoT Rhetoric
Iain Morris, News Editor, 5/18/2016
Google Doubles Down on Machine Learning, AI
Mitch Wagner, West Coast Bureau Chief, Light Reading, 5/19/2016
Like Us on Facebook
Twitter Feed
BETWEEN THE CEOs - Executive Interviews
In this latest installment of the CEO Chat series, Craig Labovitz, co-founder and CEO of Deepfield, sits down with Light Reading's Steve Saunders in Light Reading's New York City office to discuss how Deepfield fits in with the big data trend and more.
Grant van Rooyen, president and CEO of Cologix, sits down with Steve Saunders, founder and CEO of Light Reading, in the vendor's New Jersey facility to offer an inside look at the company's success story and discuss the importance of security in the telecom industry.
Animals with Phones
Live Digital Audio

Our world has evolved through innovation from the Industrial Revolution of the 1740s to the information age, and it is now entering the Fourth Industrial Revolution, driven by technology. Technology is driving a paradigm shift in the way digital solutions deliver a connected world, changing the way we live, communicate and provide solutions. It can have a powerful impact on how we tackle some of the world’s most pressing problems. In this radio show, Caroline Dowling, President of Communications Infrastructure & Enterprise Computing at Flex, will join Women in Comms Director Sarah Thomas to discuss the impact technology has on society and how it can be a game-changer across the globe; improving lives and creating a smarter world. Dowling, a Cork, Ireland, native and graduate of Harvard Business School's Advanced Management Program, will also discuss her experience managing an international team focused on innovation in an age of high-speed change.