Broadcast with Wifi Direct

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Broadcast with Wifi Direct

Zhenkai Zhu
I want to use Wifi Direct in a scenario of local multi-user communication of several phones without an AP.
Ideally, I would like to have each phone capable of send packets to a broadcast or multicast destination, so that one broacasting/multicasting is required to send a particular packet to the rest of the devices.

This seems to be not possible right now. Is it deliberately disabled or because of the limits posted by the firmware of the wireless chip? If it's doable, how much effort does it require if I want to hack my phones?

Thanks,
Zhenkai

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Re: Broadcast with Wifi Direct

Irfan Sheriff
On Tue, Dec 4, 2012 at 2:20 PM, Zhenkai Zhu <[hidden email]> wrote:
I want to use Wifi Direct in a scenario of local multi-user communication of several phones without an AP.
Ideally, I would like to have each phone capable of send packets to a broadcast or multicast destination, so that one broacasting/multicasting is required to send a particular packet to the rest of the devices. 

This seems to be not possible right now. Is it deliberately disabled or because of the limits posted by the firmware of the wireless chip? If it's

Can you clarify on what exactly is not working ? Did you setup a multi-peer setup and try to communicate ?

 
doable, how much effort does it require if I want to hack my phones?

Thanks,
Zhenkai

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Re: Broadcast with Wifi Direct

Zhenkai Zhu
What I tried was a simple 3-phone topology. 

+-----+              +-----+              +-----+
|   1  |---------------|   2  |---------------|  3  |
+-----+              +-----+              +-----+

Phone 2 acts as the owner of the group or AP. I tried to make phone 1 broadcast (by sending to a broadcast address), and phone 3 can not receive the broadcast packet, which is kind of expected.

Because I'm currently working on a network that takes advantage of broadcast (NDN), so what I really want is:

1) The 3 phones can act as an equal participant, i.e., any phone can broadcast and the other two phones can receive the broadcast packets. Assuming all three phones can hear each other, then broadcast is the nature way to go, as wireless communication is broadcast in nature.

2) Ideally, I would also like to skip the phase of establishment of peer connection or group, as I don't really care who is the peer because it's all broadcast communication and we will have a name for each packet in NDN.


On Tuesday, December 4, 2012 6:19:05 PM UTC-8, Irfan Sheriff wrote:
On Tue, Dec 4, 2012 at 2:20 PM, Zhenkai Zhu <<a href="javascript:" target="_blank" gdf-obfuscated-mailto="chIG5yBC5yYJ">zhuzh...@...> wrote:
I want to use Wifi Direct in a scenario of local multi-user communication of several phones without an AP.
Ideally, I would like to have each phone capable of send packets to a broadcast or multicast destination, so that one broacasting/multicasting is required to send a particular packet to the rest of the devices. 

This seems to be not possible right now. Is it deliberately disabled or because of the limits posted by the firmware of the wireless chip? If it's

Can you clarify on what exactly is not working ? Did you setup a multi-peer setup and try to communicate ?

 
doable, how much effort does it require if I want to hack my phones?

Thanks,
Zhenkai

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