One radio, One Channel. That's our philosophy... Since there is only one radio receiver chip, it can be set to only one channel at a time -- in fact it takes some overhead to switch to a different channel. So you can only receive one message at a time. If there are two simultaneous transmitters the most likely result is that both messages will be corrupted, but the strongest might come through ok in some cases.
I don't know what "pseudorandom sequences" you are referring to. MS Fekete Tamás wrote: > Thank you! > > I have not found any documentation how the mica2 works. I need ask help here. > > I thought these motes can look different frequency channels at the same > time and use different pseudorandom sequences. In this case the mote can > detect two signal on two different frequency channels (each signals are on > the beginning of the own speudorandom sequence) and the mote can choose > out the stronger signal and it can follow that’s pseudorandom sequence. > > The above situation I cannot receive 2 message at the same time, but I can > choose out the better and receive it ( of course throw away the weaker). > > Can it be? > > > Tamas > > > > Hétfő, Július 12, 2010 5:38 pm időpontban Michael Schippling írta: >> All nodes in a system share one radio frequency/channel, >> so only one message can be "on the air" at a time. The MAC protocol >> attempts to prevent two nodes from transmitting at the same time, but if >> it fails the received result is usually garbage so sometimes messages are >> dropped due to interference. This holds for all types of motes using TOS. >> >> I don't know about any MAC simulations other than TOSSIM. >> MS >> >> >> >> Fekete Tamás wrote: >> >>> Hello. I need some help. >>> >>> >>> I would work with MICA2. And my question is the following: >>> If the base station receives 2 messages at the same time, what are my >>> possibilities? Can I choose of them? And how? >>> >>> I don’t know how MICA2 works in such situation. >>> >>> >>> Thanks! >>> >>> >>> >>> >>> Tamas >>> >>> >>> ps. Has somebody done MAC protocol simulation in MATLAB? >>> >>> >>> >>> _______________________________________________ >>> Tinyos-help mailing list >>> Tinyos-help@millennium.berkeley.edu >>> https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help >>> > > > > _______________________________________________ > Tinyos-help mailing list > Tinyos-help@millennium.berkeley.edu > https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help _______________________________________________ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
