Re: [Tinyos-help] CTP: ETX values vs. LPL wake-up interval

2010-11-19 Thread Manjunath Doddavenkatappa
Dear Sir, Please find the file at the following link. The file contains PRR vs. LPL_wakeup_interval observations. Please skim through the details provided below each of the tables in the file. http://www.comp.nus.edu.sg/~doddaven/lpl.pdf Sincerely, Manjunath D

Re: [Tinyos-help] CTP: ETX values vs. LPL wake-up interval

2010-11-17 Thread Philip Levis
I don't think this quite answers my question: it was whether, on using setLocalWakeupInterval(), you see a change in PRR on simple AM transmissions. I.e., is this a general link layer issue, or an interaction between the link layer and CTP? My guess is that it is the former, but evidence would h

Re: [Tinyos-help] CTP: ETX values vs. LPL wake-up interval

2010-11-16 Thread Manjunath Doddavenkatappa
Dear Sir, The problem and its cause can be summarized as follows. In the case of CTP, I guess it is required to set LPL variables (local and remote sleep intervals) from the Makefile. Otherwise, I guess no preamble is sent before transmitting routing beacons thus resulting in unexpected

Re: [Tinyos-help] CTP: ETX values vs. LPL wake-up interval

2010-11-15 Thread Philip Levis
On Nov 7, 2010, at 3:40 AM, Manjunath Doddavenkatappa wrote: > > Dear Dr. Gnawali, > > Sorry to get back to you so late, we had a paper deadline. > > Everything works fine if I set LPL variables from the Makefile as in > TestNetworkLpl. Problems arise only on trying to set LPL variables from

Re: [Tinyos-help] CTP: ETX values vs. LPL wake-up interval

2010-11-07 Thread Manjunath Doddavenkatappa
Dear Dr. Gnawali, Sorry to get back to you so late, we had a paper deadline. Everything works fine if I set LPL variables from the Makefile as in TestNetworkLpl. Problems arise only on trying to set LPL variables from the program using "setLocalWakeupInterval()". Just to verify in the later

Re: [Tinyos-help] CTP: ETX values vs. LPL wake-up interval

2010-10-22 Thread Omprakash Gnawali
Are you using TestNetworkLpl and changing the flags in the Makefile to control various intervals? If not, you should tell me how to replicate your problem starting with TestNetworkLpl. - om_p On Thu, Oct 21, 2010 at 11:01 PM, Manjunath Doddavenkatappa wrote: > > Generally, yes. As ETX increases

Re: [Tinyos-help] CTP: ETX values vs. LPL wake-up interval

2010-10-21 Thread Manjunath Doddavenkatappa
Generally, yes. As ETX increases lossses also increase. I can observe the fact that RetxmitTimer in CtpForwardingEngine being fired quite a few times before sucessfully transmitting every packet. But, only a few times this does not hold with packets getting through although ETX remains at a

Re: [Tinyos-help] CTP: ETX values vs. LPL wake-up interval

2010-10-21 Thread Omprakash Gnawali
On Tue, Oct 19, 2010 at 1:04 AM, Manjunath Doddavenkatappa wrote: > > Dear All, > >   We are not able to figure out a reason why ETX values in CTP increases as > wake-up interval of the LPL (BoXMaC-One) increases. We have a simple setup > of a sender and a root node placed adjacent to each other.

[Tinyos-help] CTP: ETX values vs. LPL wake-up interval

2010-10-19 Thread Manjunath Doddavenkatappa
Dear All, We are not able to figure out a reason why ETX values in CTP increases as wake-up interval of the LPL (BoXMaC-One) increases. We have a simple setup of a sender and a root node placed adjacent to each other. Nodes use maximum power of 0 dBm. 1) We are using IPI of 15s. We repe