Re: Background BTLE Advertisement Intervals
Re: Background BTLE Advertisement Intervals
- Subject: Re: Background BTLE Advertisement Intervals
- From: Joe Sines <email@hidden>
- Date: Thu, 03 May 2012 17:50:28 -0500
Thank you, Joakim. I would be very eager to test any timings that you would suggest as you find them.
Joe
On May 3, 2012, at 4:57 PM, Joakim Linde wrote:
>
> Hi Joe,
>
> I can compile that information and share it on this list. It will be a couple of days before I can get to it.
>
> Thanks,
> Joakim
>
> On May 3, 2012, at 1:19 PM, Joe Sines wrote:
>
>> Hello,
>>
>> I see that others here are seeing issues with >100ms advertising intervals causing a significant and erratic delay in background discovery. The recommendation of using 20ms advertising seems a bit harsh(as far as battery consumption goes). It is also well below the 100ms limit that the Bluetooth SIG has put on undirected non-connectable devices. I trust that efforts are being made to improve this situation, but for now it seems there may be some missing pieces to the puzzle.
>>
>> The current Apple Development Guidelines show a list of 645ms+ advertising intervals that are approved to work ideally with the current background discovery algorithm. I would like to see another list that would list some Apple-approved advertising intervals between 20ms to 100ms, and perhaps a few between 100ms to 645ms. This would seem necessary to properly support both connectable and non-connectable devices without choosing a "bad" timing (that may prove to have poor performance with the current CoreBluetooth algorithm).
>>
>> Are these intervals known?
>>
>> Cheers,
>> Joe Sines
>
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