On Wed, Jun 4, 2008 at 11:36 PM, Varun Jain <[EMAIL PROTECTED]> wrote: > Hello TinyOS users, > > I have read all the papers and comparisons cited in the earlier posts for > CTP. CTP is meant to be "Collecting" data from various motes lying in the > field and send the data to a central "BaseStation". As Dissemination is for > broadcasting certain common data/ small packets to all the nodes in the > network, it will only suit first part of my application which is to send > certain data everyday once to the remote motes. Secondly, I need to collect > data when a particular event happens at a particular node which can be done > by "Collection". Third part of my application is to send some particular > data to a particular node in the network for which I want guidance that can > CTP be used for it??? If we consider the BaseStation as main root of the > tree, then we cannot send the data packet down the tree or can we?? As > TEP-119 says, "Collection provides a best-effort, multihop delivery of > packets to one of a network's tree roots: it is an anycast protocol" so that > makes me believe that we can deliver particular data to a particular tree > root from the BaseStation but not further down those tree roots, in which > case we will have to make every node a 'tree root' which is not possible, so > how do we overcome this issue? I am currently also considering to apply > TYMO for my application. Are there any papers comparing TYMO and CTP > protocols???
You can not use CTP to route from the root to the nodes in the network. You might need to add some kind of reverse path routing or other kinds of mechanisms. Or you can use TYMO as you suggested. There are no papers comparing TYMO and CTP but you can look up Romain's Master's thesis or the tutorial pages for a detailed description of TYMO. > I have 4 Texas Instruments CC2420DBK, so for testing 'TestNetwork' > application, do we program 3 boards with this application and 1 board with > the "BaseStation" application. Can anyone please include a > "guide/Readme.txt" for TestNetwork as they are really helpful…. You should program a mote whose ID % 500 is 0 to make that node a root. You can look at apps/MultihopOscilloscope for a more realistic example of an application that uses Collection and Dissemination. - om_p _______________________________________________ Tinyos-help mailing list [email protected] https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
