Hi Den and Jeff, Appreciate your response! Your answers are really helpful.
Regards, Mahesh Kind Regards, *Mahesh Jena* Mob: +91-9717-999-451 www.pretlist.com On Sun, Dec 31, 2017 at 9:51 AM, Dan CaJacob via USRP-users < usrp-users@lists.ettus.com> wrote: > Jeff is right, but since I happen to have tackled this problem several > times myself, I'll leave some hopefully helpful advice. My use of unicast > protocols has mostly been for spacecraft downlinks - what's your use case? > In any event, most uni/mult-cast protocols I have come across have been > developed for imaging computers on a network or dumping data from > satellites. Here's some examples: > > - NORM: https://www.nrl.navy.mil/itd/ncs/products/norm > - https://www.udpcast.linux.lu/ > - http://feclib.sourceforge.net/ > - http://saratoga.sourceforge.net/ > > Most if not all of these are UDP-based, so your modem (which is where > GNURadio comes in) will need to be IP-encapsulating. > > I built an IP-encapsulating QPSK modem for GRCon 2017 based on a fork of > Andre Lofaldli's gr-ccsds OOT project. See my fork here: > https://github.com/dcajacob/gr-ccsds and video from the conference here: > https://www.youtube.com/watch?v=gVCCQ6rX3nk > > In the video, I use the modem to demonstrate bi-directional remote shell > access and file transfer is also possible via rsync, scp or whatever > protocol you like. You can use one of the unicast protocols / apps above to > demonstrate unicast or multicast as well. > > Note that some of the protocols can include some return traffic if you > have a return channel, but in general they provide built in forward error > correction via erasure codes. > > Hope this helps you or anyone else with this particular use case. > > - Dan > > On Fri, Dec 29, 2017 at 4:43 PM Jeff Long via USRP-users < > usrp-users@lists.ettus.com> wrote: > >> Unicast/multicast/broadcast are networking terms for different types of >> addresses in a packet, and are relevant at Layer 2 and above. >> >> GNU Radio is (mostly) concerned with Layer 1 (the radio), where >> "broadcast" is an RF term. There is no "multicast" or "unicast" at this >> level. >> >> You can carry any traffic you like over a channel implemented with GNU >> Radio. You're probably looking to learn about PDUs and the tuntap >> interface if you're dealing with GNU Radio and IP networking. >> >> On 12/28/2017 06:17 AM, Mahesh Jena via USRP-users wrote: >> > Hi Everyone, >> > I am new to the GNURadio world. >> > >> > I have tested few GNURadio features and test scenarios with USRP E312 >> > and B210, but all the example that I found has communication over >> broadcast. >> > >> > I wanted to know if its possible to send _unicast_ or >> > _multicast_ messages via GNURadio? >> > If yes, then can you please give me some example! >> > >> > Thanks in advance! >> > >> > Kind Regards, >> > >> > *Mahesh Jena >> > * >> > >> > >> > *DISCLAIMER* >> > >> > >> > THIS MESSAGE, TOGETHER WITH ANY ATTACHMENTS, IS CONFIDENTIAL, IS >> > INTENDED ONLY FOR THE USE OF THE ADDRESSEE(S), AND MAY HAVE INFORMATION >> > THAT IS COVERED BY LEGAL, PROFESSIONAL OR OTHER PRIVILEGE. ANY OPINIONS >> > EXPRESSED, IMPLIED, OR PRESENTED ARE SOLELY THOSE OF THE AUTHOR AND ARE >> > NOT THOSE OF PRETLIST. IF YOU ARE NOT THE INTENDED RECIPIENT, THEN >> > PLEASE DESTROY THIS EMAIL AND ITS ATTACHMENTS, AND LET US KNOW AT ONCE. >> > ANY COPYING, DISTRIBUTION OR USE OF THIS EMAIL, ITS ATTACHMENTS, OR ANY >> > INFORMATION CONTAINED HERE IS PROHIBITED. >> > >> > >> > >> > _______________________________________________ >> > USRP-users mailing list >> > USRP-users@lists.ettus.com >> > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >> > >> >> >> _______________________________________________ >> USRP-users mailing list >> USRP-users@lists.ettus.com >> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >> > -- > Very Respectfully, > > Dan CaJacob > > _______________________________________________ > USRP-users mailing list > USRP-users@lists.ettus.com > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com > > -- *DISCLAIMER* THIS MESSAGE, TOGETHER WITH ANY ATTACHMENTS, IS CONFIDENTIAL, IS INTENDED ONLY FOR THE USE OF THE ADDRESSEE(S), AND MAY HAVE INFORMATION THAT IS COVERED BY LEGAL, PROFESSIONAL OR OTHER PRIVILEGE. ANY OPINIONS EXPRESSED, IMPLIED, OR PRESENTED ARE SOLELY THOSE OF THE AUTHOR AND ARE NOT THOSE OF PRETLIST. IF YOU ARE NOT THE INTENDED RECIPIENT, THEN PLEASE DESTROY THIS EMAIL AND ITS ATTACHMENTS, AND LET US KNOW AT ONCE. ANY COPYING, DISTRIBUTION OR USE OF THIS EMAIL, ITS ATTACHMENTS, OR ANY INFORMATION CONTAINED HERE IS PROHIBITED.
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