[Tinyos-help] How can I get acks for broadcasting ?
Hi Sometime, I need to know which nodes really received broadcasted packet. In unicasting mode, I will use packet acknowledgement for confirming that the receipent really received the packet. However, Are there any way that I can know all receipents(to be expected) received packet in case of broadcasting ? How packet ackwledgement works in broadcasting ? Thanks. -- DaeHee(Danny) Kim Department of Electrical Engineering and Computer Science(EECS), Wichita State University Cell Phone : 1-607-321-9574 email-address : dxk...@wichita.edu, dahki...@gmail.com ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
[Tinyos-help] Fwd: How can I make zero noise or collisions in Tossim?
Hi, everyone I am using Tinyos2.0.2, Tossim for micaz for simulation. Although simulating with very similar real environment(noises collisions) is very important, sometimes we need idealized environment for simulation. That is, in that case, following assumptions should be satisified. All sending packets should be delivered to next hop without any loss(packet drop) irrespective of any collision, if we set the lower noise level than signal strength for deliver packet. That is, 100% delivery ratio should be satisfied. Are there any way that I can disable collisions(if exist) in Tossim(especially, in MAC layer)? Danny -- Forwarded message -- From: Daehee Kim dahki...@gmail.com Date: 2008/12/31 Subject: Re: [Tinyos-help] How can I make zero noise in Tossim? To: Philip Levis p...@cs.stanford.edu Hi, Phil Thanks for your comment. First of all, Are you saying that each node can transmit each other without dropping unless collisions occur (based on the environment of previous my email)? Second, If so, based on your comments, using jitter at each node(each node sends packets at a slight different time with other nodes) could help prevent collisions. Retramissions could be one way to deal with a packet drop by collisions. Could you fix if there are any wrong comments here ? I apprecaite your help . Happy new year. Danny 2008/12/31 Philip Levis p...@cs.stanford.edu Collisions? Phil On Dec 30, 2008, at 9:38 PM, Daehee Kim wrote: Hi. How can I make zero noise in Tossim ? For example, let's suppose there are three nodes, 0, 1, 2. I set gain value for all nodes gain 0 1 -55 gain 0 2 -55 gain 1 0 -55 gain 1 2 -55 gain 2 0 -55 gain 2 1 -55 Also, I made noise.txt (noise file) with more than 100 values -100 -100 -100 : : By using upper gain and noise files, all three nodes can communicate each other. Problem is sometimes data packet disappear among them. Realistic modeling is very important for simulation, but in my case, data packets should not be disappeared at any case. Do you know how to make idealistic environment where all data packets cannot drop on the air ? I would appreciate your any help. Thanks. -- DaeHee(Danny) Kim Department of Electrical Engineering and Computer Science(EECS), Wichita State University Cell Phone : 1-607-321-9574 email-address : dxk...@wichita.edu, dahki...@gmail.com ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help -- DaeHee(Danny) Kim Department of Electrical Engineering and Computer Science(EECS), Wichita State University Cell Phone : 1-607-321-9574 email-address : dxk...@wichita.edu, dahki...@gmail.com -- DaeHee(Danny) Kim Department of Electrical Engineering and Computer Science(EECS), Wichita State University Cell Phone : 1-607-321-9574 email-address : dxk...@wichita.edu, dahki...@gmail.com ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
[Tinyos-help] How can I make zero noise in Tossim?
Hi. How can I make zero noise in Tossim ? For example, let's suppose there are three nodes, 0, 1, 2. I set gain value for all nodes gain 0 1 -55 gain 0 2 -55 gain 1 0 -55 gain 1 2 -55 gain 2 0 -55 gain 2 1 -55 Also, I made noise.txt (noise file) with more than 100 values -100 -100 -100 : : By using upper gain and noise files, all three nodes can communicate each other. Problem is sometimes data packet disappear among them. Realistic modeling is very important for simulation, but in my case, data packets should not be disappeared at any case. Do you know how to make idealistic environment where all data packets cannot drop on the air ? I would appreciate your any help. Thanks. -- DaeHee(Danny) Kim Department of Electrical Engineering and Computer Science(EECS), Wichita State University Cell Phone : 1-607-321-9574 email-address : dxk...@wichita.edu, dahki...@gmail.com ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
Re: [Tinyos-help] How can I measure computation time in Tossim properly ?
Hi. Everyone How can I measure computation time in Tossim properly ? As I mentioned followings, the time difference between computations was same although the computation 100^3. I used LocalTime.get() to get time. Are there any settings that I have to reconfigure in TinyOS to measure computation time properly ? Thanks. Danny 2008/12/26 Daehee Kim dahki...@gmail.com Hi. I am using TinyOS 2.0.2, TOSSIM, Micaz. I am trying to measure computation time in each node by using TOSSIM (for example such as M^3 computation) // Here, measured current time.. (Before computation) for ... (100 loop) for ... (100 loop) for (100 loop) // Here, measured current time... (After computation) I expected the time between before computation and after computation will be different (at least hundreds of milliseconds...) I used LocalTime.get() as well as sim_time_string() in order to get the time. However, irrespective of number of loop, the times which were measured at both case (before, after) was same. I don't understand why two time becomes same. Does TinyOS simulate micaz in TOSSIM correctly ? I would very apprecaite any help. Thanks. Danny.. -- DaeHee(Danny) Kim Department of Electrical Engineering and Computer Science(EECS), Wichita State University Cell Phone : 1-607-321-9574 email-address : dxk...@wichita.edu, dahki...@gmail.com -- DaeHee(Danny) Kim Department of Electrical Engineering and Computer Science(EECS), Wichita State University Cell Phone : 1-607-321-9574 email-address : dxk...@wichita.edu, dahki...@gmail.com ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
