Sprint Plans to Meld TDD, FDD LTE Spectrum

Sprint plans to start using carrier aggregation to bond its LTE TDD spectrum in the 2.5GHz band with its LTE FDD spectrum in 1.9GHz, the carrier revealed Thursday, along with its third-quarter earnings.

As a refresher, carrier aggregation is part of the 3rd Generation Partnership Project (3GPP) 's LTE-Advanced specs that involves aggregating disparate spectrum bands for more bandwidth and faster speeds. Sprint Corp. (NYSE: S) CEO Marcelo Claure has praised the technology in the past for its ability to make the 2.5GHz perform like its spectrum powerhouse, 1.9GHz, but the carrier went a step further in revealing plans to start implementing it today. (See Defining 4G: What the Heck Is LTE TDD?)

Claure said combining Sprint's LTE TDD (Time-Division Duplex) spectrum with its LTE FDD (Frequency Division Duplex) spectrum will give it the flexibility to use the 1.9GHz spectrum for uplink and 2.5GHz for downlink, letting the two provide the same coverage.

Sprint CTO Stephen Bye also chimed in to note that doing so would not change any of its network plans as it would continue to deploy TDD-LTE at 2.5GHz, but -- given the carrier's spectrum depth in 2.5GHz thanks to Clearwire -- it can easily complement it with FDD carrier aggregation. Sprint is looking at using carrier aggregation on all the spectrum it owns, he said, including 1800Mhz, 1900Mhz and 2.5GHz. (See Sprint: LTE TDD Speed Boost Coming Soon.)

"We're not actually talking about a specific time frame at this point, but it's under development and we're working with device and network vendors on the timing of that," Bye said on the earnings call, adding that it's certainly not a few years off, but "more in the near term."

Claure also reiterated past comments that he's open to discussions around potentially selling Sprint's 2.5GHz spectrum, but isn't actively shopping it around. (See Sprint Mulling 2.5GHz Monetization Opps.)

Read more about mobile network strategies on the dedicated 4G LTE channel here on Light Reading.

The aggressive moves Claure has made since coming on the job this summer paid off in the carrier's fiscal third quarter as it added nearly 1 million connections, a 42% increase over last year, including 30,000 post-paid customers. The CEO said Sprint's "Cut your bill in half" promotion has been so successful it will extend it through 2015. (See Sprint Offers to Halve AT&T, Verizon Customers' Bills and Sprint Halves Rivals' Pricing Plans... Sorta.)

Yet, while it was successful in adding customers in the third quarter, the additions came at the expense of earnings. Sprint posted a loss of $2.38 billion, or 60 cents a share, up from a loss of $1.04 billion in the third quarter last year. The carrier earned revenues of $8.97 billion in the quarter and reported an operating loss of $2.5 billion, which includes a non-cash charge of $2.1 billion, and is up from $576 million loss a year ago.

Sprint's shares rose 4.15% to $4.72 after its results were announced Thursday.

— Sarah Thomas, Editorial Operations Director, Light Reading

IPMan10 3/5/2015 | 12:09:55 PM
Re: Sprint, the comeback kid Although they market against each other, Sprint isnt competing against VZ and AT&T. Its simply showing itself as a value option to consumers. You have to understand that as Sprint's network grows, VZ and AT&T's grows exponentially due to the revenue designs and control. In other words..Sprint orders the lines and poles . However, this may change given that verizon is selling off its wireline service to ..infinity i believe. Like Sprint..they are slowly moving into mobile only platform. In reference to network deployment. It took my team at BOFA 6 years to decom 17,000 servers in 2 data centers. Imagine what a scaled mammoth network like Sprint would take to decom and deploy new equipment. Not so small anymore when you put it in perspective is it?
bosco_pcs 2/5/2015 | 1:23:49 PM
Re: Sprint, the comeback kid Can't say I am happy with Sprint as both an investor and a subscriber. I think this is the best news it has amid all the gimmiclks with regard to pricing etc. What is the point of having competitive pricing if the network couldn't deliver reasonable services at a major city. So we are talking about both robustness in the coverage areas and the footprint. Son Sen (Mr Son) should have kept Hesse a bit longer and concentrate on the network vision (thing) Maybe he should borrow a page from Jack Ma. The latter watches "Forest Gump" often. The former should at least watch "Fields of Dream" once: if you build it, they will come. Getting Radio Shack outlets may be a good thing if they can be used as service center and not just a show room
sarahthomas1011 2/5/2015 | 12:26:40 PM
Re: VoLTE Claure did say they are working towards it, but still no timeline or concrete details.
lrmobile_Ziggy 2/5/2015 | 12:22:22 PM
VoLTE Still no immediate plans for VoLTE?
sarahthomas1011 2/5/2015 | 11:26:56 AM
Sprint, the comeback kid Despite the wider loss, I think it's fair to say Sprint's turnaround is starting to take hold. It's going to take many quarters to complete it, something former CEO Dan Hesse always said, but Claure seems to be expediting things. I'm not sure it will give AT&T and Verizon a run for their money, but it's at least fending off T-Mobile's advances.
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