Many to Many chat.

[jpronans]

Is your feature request related to a problem? Please describe. No

Describe the solution you'd like Multi-party chat. i.e. many to many.

[DJ2LS]

Needed frames:

datac0 as "weakup" datac3 as payload

Frame design: Wakeup: <1b frame type><3b chat-id><6b Callsign><1b mode?><3b message-id> Payload: <3b message-id>

[sp2ong]

Nice idea to broadcast features that allow you to send asynchronous messages to one or all (group chat )

[DJ2LS]

Yes, but its a future feature. Sending a broadcast isn't a big deal, yet. But I want to focus on protocol stability. So this feature needs to wait

[DJ2LS]

Possible NORM oriented feature thoughts:

• ISS: data as stream, repeat it N times
• ISS: Split data into chunks with number and max chunks
• IRS: missing chunks requested in NACK frame
• N Stations receiving NACK: transmit missing bursts
• We need to make sure IRS must receive at least one burst from ISS, otherwise it would be Message forwarding which isn't permitted by default in some countries
• We need to avoid packet collision somehow. Therefore we should use a mechanism for random delayed transmission like used for QRV frames
• We need to hold last bursts in separate broadcast buffer for making them available for other stations
• We need to set N retries of sending a NACK
• Should we use a wake up frame or trying to run a data mode in parallel all the time - this should be possible with vectorisation of codec2 ofdm acquisition code

[DJ2LS]

basic broadcast seems to be working, but the feature needs more users using it so we can get more experience for a features like this.