A Return to Permission-Less Innovation

Posted by: Joan Marsh on August 22, 2016 at 2:41 pm

The latest chapter of the Wi-Fi vs. LTE-U saga unfolded this month as the Wi-Fi Alliance (WFA) announced that, after many months, it was finally closing in on an approved LTE-U coexistence test plan but surprised everyone by suggesting that the test plan should also include LTE-LAA. To understand why this is so aggravating, we need to take a little trip in the not-so-way-back machine.

A year ago, when the whole LTE-U brouhaha erupted, the Wi-Fi proponents advanced two primary complaints.

First, the Wi-Fi proponents argued that LTE-U had not been standardized, but instead was an un-scrutinized proprietary technology. It was further argued that the unlicensed community always worked together cooperatively and that the LTE-U proponents had somehow violated that unwritten code.

As a preliminary matter, that’s simply not the case. There are many unlicensed devices that are not particularly cooperative with Wi-Fi. One report estimates that 76% of the interference into home Wi-Fi systems comes from baby monitors, microwaves and cordless phones; and no one manufacturing those devices had to seek permission from the WFA to proceed or submit to WFA co-existence testing. I would also note that LTE-U relies on LTE Releases standardized in 3GPP.

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