Hello, Am 22.01.2013 um 13:54 schrieb Steve Song:
> A colleague of mine is building a batman-adv mesh network in an > apartment building with essentially one node per apartment. Not > surprisingly, results in a very dense mesh with each node having a > large number of neighbours. Here is a typical batctl o output > http://pastebin.com/aAR43hj7 This results in some fairly slow > connections. > > I am seeking some general advice on how to optimise batman-adv in the > context of a dense mesh. Options that we have considered include > turning the radio transmit power down on all of the devices and/or > alternating channels on different floors (e.g. 1,6,11,1,6,11,etc). > However, it is not clear to us what is the best strategy in this > context. Grateful for any tips or suggestions you may have. > using different channels is always a good idea when it comes to crowded places. Another option in to use 5 Ghz for mesh and 2.4 Ghz for clients. Another options is to use less nodes - one node per appartment might be too much. Turning down the transmit power can help, but might have the opposite effect. (Interference- vs. transmission range) Another - imho the most important rule - is to limit hops Each hop limits the total throughput: if using same wireless channels one hop cannot forward data while receiving. It has to wait. To summarize: -> Minimize the (expected) hop count. -> Use as many channels as possible (incl. 5 Ghz) -> Use as few nodes per channel as needed to provide coverage Keep smiling yanosz
