It's still a shockingly open question exactly how the world's carriers plan on transporting voice over LTE -- which is something everyone who loves 4G should be freaking out about, considering that it threatens launch schedules and interoperability among unlocked handsets. A vibrant array of possible solutions are currently on the table, including everything from SIP-based IMS (which is already approved by the 3GPP, helpfully) to the controversial thought of leaving legacy GSM and UMTS networks live for the sole purpose of running voice. T-Mobile International is putting its bets on VoLGA -- Voice Over LTE via Generic Access -- by participating in the VoLGA Forum, which has just published the second version of its specifications and aims for 3GPP consideration later this year. The technology routes circuit-switched (that is, old-school) voice over data packets, but the problem is that there are a bunch of companies proposing the same thing in slightly different ways; Nokia Siemens Networks, for example, is working on its own proprietary standard that'll go head-to-head with VoLGA. Currently, T-Mobile's the only major network actively participating in VoLGA's development, though it apparently has the support of every major infrastructure vendor except Nokia Siemens. Whether it's VoLGA or something else, let's hope everyone gets on the same page on the double before everyone gets too entrenched in incompatible technologies that make roaming difficult and handset variety lame.

Sure, Clearwire has actually been running its WiMAX network in Atlanta for six weeks already, but that technicality isn't stopping the company from deciding now is the time to "launch" the service in the metro area, with an appropriately-sized marketing blitz to boot. Portland travelers already using the service should feel at home now with their own personal 4G network to keep them company while they engorge on the recommended dosage of Chik-Fil-A sandwiches and Varsity chili dogs. Prices are identical to what we've already heard and, yes, even though the company just quietly launched the service in Las Vegas, expect to see the delayed red carpet rollout for that city sometime later this Summer.

Clearwire's been slowly planting its WiMAX seeds around the country, and with nary a peep, it's rolled out the service into the Las Vegas area, designated by the image above. According to a company rep, the "official" launch -- including new store openings and a marketing blitz -- will begin this summer, but for now, it's operational and ready for those in the know. Portland and Atlanta vacationers, you can now watch your online bank account dwindle faster than you ever could before.

[Via Fierce Wireless; thanks, Zachery]

Read - Clearwire Goes Soft in Vegas
Read - Clear coverage map

Mmm, the sweet smell of mobile data burning up the pipes in the morning. Gets us every time. Evidently, the same aroma does something to the brains of Ericsson and TeliaSonera, who have taken their January agreement to the next level by introducing the planet's first commercial Long-Term Evolution (LTE) site in Stockholm, Sweden. Mind you, we've seen lots of trial runs over the past year and change, but this one's no test. Rather, this site will become part of a commercial network scheduled to go live in 2010, bringing wicked fast mobile transfers to Stockholmers everywhere. Now, let's hope these American carriers get jealous, and fast.

In Europe, Deutsche Telekom-owned T-Mobile and France Telecom-owned Orange are falling behind competitors with their LTE plans, but they say there are some very, very good reasons to blame. First, there's a little thing called "voice" -- you know, the main reason most of us have phones -- which isn't natively supported by LTE since it's a pure data technology; different carriers are currently endorsing different standards for routing voice, including some who are suggesting keeping legacy GSM and CDMA networks alive solely for their voice channels. That's just the beginning, though; the carriers are also worried about a massive crunch on the back end as devices capable of downlink speeds well over 20Mbps -- speeds that easily exceed the average home broadband connection -- put unprecedented pressure on infrastructure. There are also ongoing worries over intellectual property and the massive cost that'll be incurred by anyone hoping to manufacture or maintain LTE equipment, and the icing on the cake might be spectrum -- not all of the space necessary for full-scale LTE deployments in Europe has been auctioned yet, so these guys are biding their time anyway. All told, it sounds like it's a long way off before everyone's on the same page here.

We've seen oodles of dual-mode handsets, but none quite like this. Rather than boasting two radios, two keyboards or two faces, NEC's N-06A -- which is gearing up to debut on NTT DoCoMo over in Japan -- actually has two purposes. Aside from making calls on the carrier's FOMA network, the phone can actually double as a wireless access point when AP Mode is enabled. The handset packs a cutting-edge Atheros AR6002 module, which enables handsets to operate in infrastructure mode, the primary wireless connectivity framework employed in access points, routers, laptops and other WLAN devices. In other words, your netbook (and seven other WiFi-enabled devices) can hop online via your handset, and it's far easier than the wacky tethering methods we deal with today. Other specs include an 8.1 megapixel camera, HSDPA / WLAN models and a miraculous 3.2-inch touchscreen with an 854 x 480 resolution. There's no mention of a price or ship date for the handset, but more than that, we're thirsty for details on when this chipset will be featured in a handset that's headed to US soil. Check the full release after the break.

Looking for some LTE news that's harder than those wishy-washy vibes you've been getting thus far? Listen up. On a recent conference call, Verizon Wireless President and CEO Lowell McAdam (shown) stated that its LTE network would launch commercially in around 20 to 30 US markets during "the second half of 2010." He continued by noting that a "nationwide buildout would be complete in late 2013 to early 2014," but failed to elaborate on the whens, whos and whys in between. For those locked into the 4G movement, you'll notice that these dates are slightly different than ones tossed out in April by the outfit's CFO, which leads us to believe that we could hear something else in just a few month's time if things don't go perfectly to plan. At any rate, McAdam did confirm that a tiny group of VZW testers would have access to 4G this year, with one "pre-commercial" network per US coast being activated during 2009. Bring on the bytes, baby.

[Via phoneArena]

Clearwire may not be as ubiquitous as you'd like it to be, but it's taking a huge step forward in hopes of wildly expanding by linking up with Cisco. In essence, the two have joined hands in order to "enhance and expand CLEAR 4G mobile WiMAX services throughout the United States," with Cisco providing the core infrastructure and Clearwire providing the guidance. Potentially more interesting is the notion that Cisco's Linksys brand will soon be delivering "new mobile WiMAX devices," such as routers that will presumably tune to WiFi and WiMAX waves. Specific product details are sorely absent, though Clearwire does reiterate that it's hoping to have WiMAX service to more than 80 markets across the US by the end of next year.

If you're the cranky type who's protesting the move from analog to digital TV for some bizarre reason, you probably don't care about LTE, either, so this story won't do much good in convincing you of the benefits of the switch -- but for the rest of you, check it out: Vodafone Germany has partnered with broadcaster WDR to repurpose decommissioned analog TV spectrum for LTE trials. The so-called digital dividend frequencies lie between 790 and 854MHz, a nice little nook to drop some 4G data services in rural areas, which is exactly where Voda intends to use it. Digital TV and LTE? Sounds like a win / win to us.

Network buildouts our expensive, and virtually every carrier in the world is staring down the barrel of a potentially multibillion-dollar LTE or WiMAX upgrade over the coming years. How do you soften the blow? One option is to make a strange bedfellow or two, and that's exactly what Telenor and Tele2 have done in Sweden. The rival carriers have agreed to form a joint venture to share the cost of crafting a new LTE network from the ground up and sharing spectrum in the 900 and 2600MHz bands, kicking off this year with the goal of offering service in 2010. From the customer's perspective, it seems like this could ultimately limit competition and healthy price pressure in the marketplace -- but if the alternative is waiting a few more years for these pricey networks to get off the ground, we suppose we'll take it.

[Via GigaOM]

While Clearwire's Clear Spot (which is really just a refashioned PHS-300) will handle WiMAX right out of the box, those who own one of CradlePoint's existing portable routers are flat out of luck... or are they? Said company has just announced that starting today, shipments of its business-class routers -- including the MBR800, MBR1000, and MBR1100 line of mobile broadband routers, CTR500 mobile broadband travel router, and CBA250 cellular broadband adapter -- will have WiMAX compatibility built in. Furthermore, a forthcoming (April 6th) firmware update will enable existing CradlePoint products to accept select WiMAX devices, and yes, it'll be made available for no charge at all. Talk about throwing a bone to your loyal customers.

The XOHM label may be gone, but the potency of Sprint's WiMAX network is still kickin' in and around Baltimore. For those itching for wicked fast mobile broadband outside of The Charm City, Sprint has just unveiled a slew of expansion areas that'll get gifted in 2009 and 2010. As for the rest of this year, folks in Atlanta, Charlotte, Chicago, Dallas, Ft. Worth, Honolulu, Las Vegas, Philadelphia, Portland and Seattle can expect Sprint 4G rollouts, while residents of Boston, Houston, New York, San Francisco and Washington, D.C. can be on the lookout in 2010. In related news, the carrier is also taking this opportunity to reveal that it has "several new 4G devices planned for 2009 and 2010, including a single-mode 4G data card, embedded laptops, a small-office-home-office broadband modem and a tri-mode phone." Lovely.

Sprint hasn't been coy about its love and adoration for all things WiMAX, and while it obviously has a vested interest in seeing the next-gen wireless protocol thrive, even it isn't completely ignoring the possibility of dabbling in LTE. Or, at least that's the impression we get from a recent spokesman answer to a question on whether it was "evaluating LTE equipment." Speaking on behalf of the carrier, John Polivka wouldn't go so far as to confirm nor deny whether it was actually dipping its toes into LTE testing while its Clearwire buddies weren't looking, but he did affirm that "as a prudent technology development organization, [Sprint] is always collecting competitive information about various technologies / equipment to monitor and asses the competitive landscape and any potential impacts to Sprint's plans." We've already seen a few CDMA mainstays admit to siding with LTE for 4G, and honestly, we wouldn't be shocked to see Sprint eventually cave too. Whatever stops the bleeding, right?

Thinking that there's only room in this town world for either WiMAX or LTE? Research firm In-Stat would love to disagree, as a new report from it asserts that both will actually live on for at least the next little while. Unsurprisingly, it's expected that mobile WiMAX will "outpace LTE over the next few years due to its head start on deployments," and potentially more importantly, the company believes that WiMAX and LTE will take "very different paths." In fact, it's stated that most WiMAX support will come from fixed network carriers looking to spruce up their existing offerings, while LTE expansion will likely be pushed solely (or mostly, anyway) by mobile operators. To us, it all boils down to support, and it only takes a quick survey of the field to see that LTE has the most of that. For better or worse, it seems the next-gen data war is but beginning, even though we already thought we were nearing the end.

Nokia Siemens Networks made quite a bit of noise at last year's CTIA by introducing an LTE solution for North America, and during this year's run-up to Mobile World Congress, it's vying for attention once more. The outfit's Flexi Multiradio Base Station is an understandably flexible solution that "meets the needs of new and existing 2G and 3G operators who can use their existing infrastructure to deploy new network-wide technologies via simple software upgrade to 3G or LTE." The true multiradio base station should ease concerns from operators worried over divvying up investment dollars for supporting various technologies, and it's even backwards compatible with existing Flexi Base Stations for those looking to spruce up their current hardware. For the consumer, this device could help carriers ease into LTE deployment more quickly, as the whole cut-and-run approach to simply axing one technology and moving over suddenly to another doesn't seem to sit well with most mega-corps.