LTE: Roaming Three Bands

LTE pioneers TeliaSonera, NTT DoCoMo and Verizon Wireless, will all use different frequency bands for their respective LTE networks, explains TechWorld. So for roaming in the U.S, Japan and Europe to work, modems will have to support 700MHz, 2100MHz and 2600MHz, with more bands to be used in the future. That will be a challenge for roaming, says Light Reading.

Some modems will be able to handle at least a few of these bands. The AL600 from ZTE is being developed for the North American market and will operate in the 700MHz band, which Verizon will use, and the 2.6GHz band, which will be the most common LTE band in Europe. That means data roaming will be possible as soon as operators in the US and Europe launch their services and sign roaming agreements. Samsung promises to ship its second generation LTE modem during the first half of 2010. They’ll have competition from ZTE and Huawei.

T-Mobile USA says they’ll upgrade their backhaul before they switch to faster High Speed Packet Access Plus (HSPA+) technology across the U.S. to avoid any bottlenecks. They could have the fastest 3G network in the country with HSPA+ before the end of the year, covering 205 million people and 271 cities.

Alcatel-Lucent and Ericsson are both Verizon’s and AT&T’s LTE Radio Access Network equipment providers. Meanwhile, AT&T is deploying fiber-optic backhaul connections and utilizing HSPA 7.2 3G technology.

Posted by Sam Churchill on .

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