In the Eddystone beacon spec the word 'slot' is used

[Mahendra Tailor]

The term 'slot' is used in the context of the Eddystone beacon specification.

I cannot find a definition of that word.

For example, the sample app from Nordic says "The example provides five advertising slots" and despite working in Bluetooth for 17 years I am confused :-)

Does it mean that if you have 5 slots, then each advert will contain one frame and so 5 adverts are required to advertise all of them, OR Does it mean that you can fit 5 AD elements in a single advert ( which means it will not fit in pre v5 adverts)

I think in my case the confusion comes from a little bit too much knowledge to be able to perceive the ambiguity.

Look forward to hearing from someone.

Note to Nordic guys: it may be worth putting whatever feedback comes back as a response to this in the Nordic Inforcenter page related to "Eddystone Beacon Application"

[AmbystomaLabs]

Time slotting is a standard approach for time division duplexing (TDD) for many wireless transmission systems and Bluetooth supports it. You can find it discussed in the Core spec v4.2 section 2.2.3.

[Mahendra Tailor]

Having tried the eddystone sample app and the android application, I made it so that it had 2 slots. I saw that I saw alternate adverts of the two URLs that I had in the 2 slots.

From that I will assume that slots mean sending frames in different adverts and that may change in extended advertisments of v5 as the payload in that case can be multiple of 250 bytes.

I will have to revisit all this when Nordic expose extended adverts