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How to setup a low latency (<10ms) "Direct Wifi" link between two CC31xx/C32xx?

Dudi Shmueli
Prodigy 20 points
Other Parts Discussed in Thread: CC3200, CC3100

For a point to point audio streaming application (7.1, high resolution), I need a wireless solution. the questions is can the CC31xx or CC32 be configured to minimize the latency, and make it predictable. (ie - no need for re-transmission etc. ). 

Some background of the system: The application can be though of as a "wireless 7.1 channels sound card".  all 8 channels are going to the same unit, NOT to 8 distributed speakers..).    

Thanks!

Dudi

  • 0
    TI__Mastermind 30780 points

    Hello Dudi,

    I recommend calculating your necessary application throughput and comparing it to the device datasheet as well as doing some initial prototyping of your system and testing it out. 

    Take a look at the Peer-to-Peer example in the SDK or the SimpleLink WiFi CC3200 Audio BoosterPack design for initial ideas.

    Best Regards,

    Ben

  • 0 in reply to Benjamin Moore
    Prodigy 20 points
    Hi Ben,
    Thanks for the quick response!
    Actually, the throughput is enough, and also is flexible. the most critical aspect is latency.

    for example, I can use the main channel as high definition (L/R stereo), and use the surround and subwoofer channels in lower throughput.
    I can fit all in ~6Mbps, which should be ok.

    the question is then how to reduce latency of a plain data stream, say 6Mbps? the data burst can be for example a 1000bit packet every 200uSec. (~5k packets/sec).

    Can I do 10ms latency with CC31xx or CC32xx?

    Thanks
    Dudi
  • 0 in reply to Dudi Shmueli
    Guru 39650 points
    Hi Dudi,

    It is hard to properly answer to your question, because it depends on many external conditions like signal quality, etc.

    As I know that CC3100 and CC3200 is not best device type, when latency is most important to you. Reliable data transfers with latency lower than 10ms I think are around possible limits of CC3100 or CC3200. But I can't guarantee it at 100%. You need to check this by your own proof concept.

    Jan