Re: [ns] Bug in 802.15.4?

2007-10-25 Thread bilge kartal
-Nachricht Datum: Thu, 18 Oct 2007 18:11:48 +0200 Von: Stefano Busanelli [EMAIL PROTECTED] An: Cesare M. Carretti [EMAIL PROTECTED] CC: ns-users@ISI.EDU Betreff: Re: [ns] Bug in 802.15.4? In the past I'd had noticed a similar strange behavior: in fact, during some simulation

[ns] Bug in 802.15.4?

2007-10-18 Thread Cesare M. Carretti
Hello all, I am implementing a distributed algorithm for sensor network, and I wrote an application and a transport protocol simil-UDP to send data. I have a strange problem in my simulation: at some point, one node stop to send packet, it is blocked and if I try to force the queue to send

Re: [ns] Bug in 802.15.4 implementation

2007-03-07 Thread Tim Allemeersch
Hi all, This is indeed a bug in the 802.15.4 ns-2 module. I have had this problem too. Multiple times, a node would just stay in the 'busy channel' mode, and could therefore not send its data. Anyway, I solved it this way: Have a cca at the first symbol. (CSH.start(1/getRate('s

[ns] Bug in 802.15.4 implementation

2007-03-06 Thread Daniele Messina
Hi all, I've found a possible bug / unhandled scenario in the 802.15.4 code included in version 2.28 and subsequent. It is due to a change introduced in the CCA and may cause the csma status to get locked to 1, with various disastrous consequences. I think that this may help someone who is