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CC3220MODA: UDP seems to have less packet loss than UDP Broadcast

Tunstall_User
Intellectual 750 points
Part Number: CC3220MODA

Hi,

We have a setup where we have an AP that sends audio to a station using UDP.

For this test the two units are a few feet apart and, ultimately, the AP will be talking to one to four stations hence the experiments with broadcast.

For the UDP test, the station audio sounds fine except perhaps for a low hiss.

When we use UDP broadcast instead of UDP we seem to get some packet loss, the audio has noticeable breaks.

We did try using multicast as well but got a similar result as to UDP broadcast.

Is there a reason why UDP broadcast would suffer more packet loss than UDP? are we doing something wrong?

Regards,

  • 0
    Guru 39650 points

    Hi,

    This is normal for wifi networks. Because for UDP broadcast is not used reply mechanism at IEEE layer (phy&mac)

    Jan

  • 0 in reply to Hnz
    Intellectual 750 points

    Jan,

    Thanks for that.

    As a matter of interest, if UDP broadcast has more packet loss than UDP would we be better off having the AP to 4 station link as one-to-one UDP links? ie instead of a AP broadcasting to 4 stations the AP would have 4 separate UDP links and send the audio to each station individually.

    Regards,

  • 0 in reply to Tunstall_User
    Guru 39650 points

    Hi,

    Yes, for a small number of clients may to be resonable option use separate udp streams. Another opon is to use stream protocol with data redundancy. This can eliminate lost of small number of packets.

    Jan