BLE Scatternet Algorithm

[hberg]

Hello,

i'm currently researching the possibility of building scatternets with BLE. As the S130 softdevice supports multiple concurrent roles, it seems very possible (see here).

Are there any studies or tested topology algorithms that implement a scatternet with BLE? I can only find studies to classic bluetooth algorithms, but it seems they can't be applied fully (because of the S130 softdevice constraints).

OpenMesh should work for this, but i'm interested in scatternet-only solutions (for the moment).

I appreciate any help.

Thanks.

Kevin

[Sigurd]

Hi,

Building a BLE scatternet is fully possible. The SoftDevice S132 v4.0.2 support 20 connections, where you can freely configure each link/connection in any combination between Peripheral and Central.

[Sigurd]

I don't have links to any algorithms, so you will have to implement how any routing of messages through the scatternet should work yourself.

[hberg]

It is more about the formation of the scatternet than the routing. There are many formation algorithms for bluetooth that are simulated and tested, but i can't really find anything for BLE.

[Sigurd]

What kind of BLE constraints are you talking about? That prevents these algorithms to be applied for BLE?

[hberg]

In several algorithms they connect a slave (peripheral) to more than one master (central), serving as a bridge. In S130, only one connection from central to peripheral is possible. It is possible to serve as bridge by connecting to one central, and letting a another central connect to the bridge (serving as peripheral). But this changes the behaviour of the algorithm. Do you know what i mean?