Re: Maximum simultaneous Bluetooth connections
Re: Maximum simultaneous Bluetooth connections
- Subject: Re: Maximum simultaneous Bluetooth connections
- From: Etan Kissling <email@hidden>
- Date: Tue, 19 Feb 2013 21:13:46 +0000
- Thread-topic: Maximum simultaneous Bluetooth connections
Classic BT offers only 7 parallel connection even in theory.
The previous thread was also with BLE. Don't recall the date when it was posted
but it was this mailing list.
On 19.02.2013, at 22:12, Sergei Shevlyagin <email@hidden>
wrote:
> Thanks Etan! Just to be 100% clear this is an issue with BTLE not just
> classic BT?
>
> On 2/19/13 1:11 PM, "Etan Kissling" <email@hidden> wrote:
>
>> Sergei,
>>
>> There was a thread on this mailing list where streaming data over three
>> concurrent connections already created problems.
>> While 100 is theoretically possible, the current technology is not yet as
>> far progressed.
>>
>> Etan
>>
>> On 19.02.2013, at 21:07, Sergei Shevlyagin <email@hidden>
>> wrote:
>>
>>> Thanks for the answers. To make my question clearer:
>>> - Max # of simultaneous connections to an iOS device, e.g. iPad 4, using
>>> Bluetooth Low Energy
>>>
>>> I understand that according to Frederik there's no theoretical maximum,
>>> I
>>> wonder if anyone has hit an actual maximum.
>>>
>>> Thanks,
>>> Sergei
>>>
>>> On 2/19/13 9:14 AM, "Chris Hall" <email@hidden> wrote:
>>>
>>>> One of the engineers stated the number was 10 devices.
>>>>
>>>> Chris Hall
>>>>
>>>>
>>>>
>>>> Sent from my iPhone
>>>>
>>>> ----------------
>>>>
>>>>
>>>> On Feb 19, 2013, at 11:54 AM, Frederik Vibe-Petersen <email@hidden>
>>>> wrote:
>>>>
>>>>> Bluetooth LE supports many devices. The number '7' or '8' is within
>>>>> the
>>>>> Standard Bluetooth 2.1 (+EDR) which the iPhone support under the MFI
>>>>> program.
>>>>>
>>>>> As I have learned, the number of simultaneous connected devices is
>>>>> based on
>>>>> the actually memory in the iPhone, designated to the Bluetooth chip.
>>>>>
>>>>> The Bluetooth LE standard officially supports unlimited devices (see
>>>>> print-screen of the official document here:
>>>>>
>>>>>
>>>>> https://dl.dropbox.com/u/3817170/Bluetooth LE Official Document.p
>>>>> ng
>>>>> )
>>>>>
>>>>> So, as we don't know how much memory Apple designated to the Bluetooth
>>>>> LE
>>>>> protocol/hardware, and how efficient they have made it, it's hard to
>>>>> tell
>>>>>
>>>>> I don't remember seeing any official number from Apple?
>>>>>
>>>>>
>>>>> On 19/02/13 17.42, "Michael Kroll" <email@hidden> wrote:
>>>>>
>>>>>> Hi,
>>>>>> I can remember that about 8 connections are supported at the same
>>>>>> time. Might
>>>>>> be wrong that it is only seven, but very sure that it's not 100+.
>>>>>>
>>>>>> Regards,
>>>>>> Dr. Michael Kroll.
>>>>>> --------------------
>>>>>> Blog: http://www.mkroll.mobi
>>>>>> Forum: http://forum.mkroll.mobi
>>>>>> Twitter: @dr_m_kroll
>>>>>>
>>>>>> Sent from iPhone.
>>>>>>
>>>>>> On 19.02.2013, at 17:37, Sergei Shevlyagin
>>>>>> <email@hidden>
>>>>>> wrote:
>>>>>>
>>>>>>> Hi,
>>>>>>>
>>>>>>> Does anyone know the maximum number of simultaneous Bluetooth LE
>>>>>>> connections
>>>>>>> that a device can handle? I'm working on an application that needs
>>>>>>> to
>>>>>>> collect
>>>>>>> data from many (100+) devices in real time.
>>>>>>>
>>>>>>> Thanks,
>>>>>>> Sergei
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>>>>>>
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>>>>>
>>>>> Med Venlig hilsen/ Best Regards
>>>>> Frederik Vibe-Petersen
>>>>> Export Officer
>>>>>
>>>>> Direct: + 45 4918 8169
>>>>> Mobile: + 45 4055 1821
>>>>> Mail: email@hidden
>>>>>
>>>>>
>>>>>
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