How do you send a beacon message containing informations like position, and how do you extract this information and signal strength by a second node?
In case of VANET you can use following patch.
http://www.alighandour.org/wave-1609tool/
one more suggestion is that you can use PBC agent for periodic beacons(I haven't tried it somewhere I read it).
Thank you for your response, bu I work on WSN . I dont think it is the same case as VANET
Well In WSN, I guess you're using the wpan model to simulate the IEEE 802.15.4 standard. In this case, you should use the beacon enabled mode. There is some examples in the ns-2 tcl folder for different configurations. (e.g. for NS-2.35 allinone, you can find them here \ns-allinone-2.35\ns-2.35\tcl\ex\wpan)
To send some data from the coordinator using the Beacon, you should fill the Beacon frame's payload.
These are the comments from the wpan model's developer inside the function :
" void Mac802_15_4::beaconTxHandler(bool forTX)"
/* To populate the beacon payload field, and should be set first, in that order (use primitive MLME_SET_request). */
So right after these comments, the program copies the payload to the beacon for transmission. So you have to fill that field before transmitting the beacon.
And here is a FAQ from the wpan model's developer (Can be useful to solve some common issues :
https://sites.google.com/site/jzhengresearch/pub/pages/wpan-ns2-faq
Asmaa, if you were able to solve this please let me know as well. Thanks in advance.
This should help
https://ns2research.wordpress.com/2015/01/07/signal-strength-in-wireless/
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