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5Ghz LTE Means More Data for More People

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As more an more people use more and more data, two companies have tested new LTE technology that helps prevent data bottlenecks in dense population areas.

Since carrier’s began providing high speed 4G LTE service over their networks, the number of people streaming music and movies, or downloading large apps and games has skyrocketed.

Data speeds have gone way up, and with it, so have data demands, as more people switch to cell phones with faster radios on faster networks and carrier’s like T-Mobile and Sprint both push for unlimited data, or at least high data caps.

This new access to content due to faster data access is awesome for many people, but just like any transportation system, such as highways, the system that transports our data can get clogged, which sort of negates the whole point of high speed data access.

That’s where Huawei and NTT DoCoMo come in. The two companies have just recently performed a successful test of an LTE broadcast using the unlicensed 5Ghz spectrum normally used for WiFi.

Most carriers broadcast over spectrum licensed by national regulating authorities (such as the FCC in the United States). Licensed spectrum is well regulated and ensures that consumers can purchase service from one company without another company blocking or clogging the system.

The 5Ghz frequency is an unlicensed frequency, because it is used by consumers and businesses for WiFi, which would be a little excessive to regulate in the same way as the frequencies used by carriers.

5Ghz typically has lower range (only a few hundred meters) and doesn’t penetrate solid objects very well, but it does not require a large open space to broadcast, making it very well suited for mesh style networks in capacity laden cities.

Some people may find the concept of 5Ghz LTE deployment a bit redundant, considering most WiFi broadcasts use the same frequency, the two broadcasts would usually be suited for the same areas, and many people are already accustomed to to using WiFi when available since it can be more reliably and some people with data caps are looking for ways to avoid using up their cap.

This homogenization of radio frequencies is only a necessary component of wireless technology as we move forward, though. Carrier aggregation (use of multiple frequency bands in a single broadcast) is an essential component of next generation LTE Advanced, and many cellular providers are already moving towards WiFi calling and offering more “smart” network features.

The benefits of such service is undeniable. Besides the benefits of carrier aggregation, 5Ghz WiFi alone offers 1.6x the capacity of current methods, but the more networks can do, the more concerns are raised over issues like net neutrality, where wireless providers’ smart networks will prioritize traffic to offer the best quality of service.

The technology isn’t available immediately (it seems that’s always the case), but Huawei and NTT DoCoMo will continue testing through 2015, and we may actually start seeing 5Ghz deployment in 2016.

Source: PC World

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Broadcom outs smaller, more efficient LTE-Advanced modem for high-spec mobiles

Broadcom out shrunken down LTEAdvanced modem for highspec mobiles

Welcome to the BCM21892. It may sound like every other piece of Broadcom silicon we've covered, but it actually represents an important move from a company that is eager to start pecking at Qualcomm's lunch. First and foremost, this is a 4G modem for flagship phones rather than any budget fare, with support for LTE-Advanced and data speeds of up to 150Mb/s. To deliver that kind of performance, carriers either need 20MHz of contiguous bandwidth -- a rarity these days -- or they need carrier aggregation technology, which allows a modem to exploit separate chunks of bandwidth simultaneously. The BCM21892 boasts that spec too, not to mention compatibility with most of the popular network standards in use around the world, from the TD and FD types of LTE right down to HSPA+, TD-SCDMA and EDGE/GSM. Finally, through a combination of small transistors (28nm) and clever algorithms, the chip is claimed to reduce power consumption by 25 percent compared to rival devices, and also to take up less space -- potentially leaving more room for other goodies (Broadcom suggests NFC). The chip is still only at the the sampling stage, however, so the folks at Qualcomm shouldn't have too much to worry about until at least 2014.

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