What does fair coexistence mean in laa?

[John Young]

if laa devices and wifi devices have the same transmit power and antenna gain,  why does wifi hold a ed threshold of -62 dBm while laa holds a ed of -72dBm. That would cause laa to back off more frequently than wifi nodes. Since both use similar back off schemes, is the scheduling granularity the reason to do so?

[Tommaso Pecorella]

Hi,

I guess that there's more params to be considered. moreover, I'm not sure that the ed threshold is strictly defined by the standard.

T.

[Tom Henderson]

The short answer is that the technologies access the channel differently
(for instance, Wi-Fi backs off to Wi-Fi at -82 dBm or lower), and there
were many studies conducted on varying the LAA energy detection
threshold to achieve the desired fairness properties. There is a lot of
literature on this topic in the form of 3GPP RAN1 contributions during
2015 calendar year (3GPP contributions are publicly available; see for
instance R1-152936).

- Tom

[John Young]

Ok, thanks.

在 2016年11月26日星期六 UTC+8上午8:17:46，Tom Henderson写道：

[John Young]

Ok, thanks .

在 2016年11月26日星期六 UTC+8上午6:25:30，Tommaso Pecorella写道：