Its radio and it is possible that a transmission may be one way. Not the typical case but Idon't think you want to be assuming that transmission one way implies both ways.
eric On Wed, Jul 16, 2008 at 5:04 PM, Varun Jain <[EMAIL PROTECTED]> wrote: > Hi Nahr, > > When your neighbor can see you, that means you can also see it, isn't it?? > Secondly, if you are in the transmitting range of your neighbor then isn't > your NEIGHBOR definitely in you range?? > > > > Cheers, > > > > Varun Jain > > > > > > *From:* [EMAIL PROTECTED] [mailto: > [EMAIL PROTECTED] *On Behalf Of *Nahr ... > *Sent:* Thursday, July 17, 2008 2:04 AM > *To:* tinyos-help > *Subject:* Re: [Tinyos-help] Discovering Neighbors > > > > Hi, > I mean that I am in his Tx range but him not (in mine). > Although, your answer is convenient. > Thanks a lot > > Nahr Elk > > 2008/7/16 Omprakash Gnawali <[EMAIL PROTECTED]>: > > On Wed, Jul 16, 2008 at 5:40 AM, Nahr ... <[EMAIL PROTECTED]> wrote: > > Hi all. > > > > I remarked in CTP protocol that a node discovers its neighbors from > received > > messages. > > But there is a case in which my neighbor could see me so I can receive > his > > messages but him not so he can't receive msg from me > > consequently, why should I put him in my neighbor table? > > This description of the scenario is unclear - your neighbor could see > you so you can receive his messages? That does not make sense. If your > neighbor could see you, that means your neighbor could receive your > message. > > If you are talking about a scenario in which there is no > bi-directional link, although such links are not useful for CTP, the > only way to determine that a link is not bi-directional is by > maintaining some state about the link. So you have to insert the > neighbor into the table. > > - om_p > > > > _______________________________________________ > Tinyos-help mailing list > [email protected] > https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help > -- Eric B. Decker Senior (over 50 :-) Researcher Autonomous Systems Lab Jack Baskin School of Engineering UCSC
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