Hello everybody, I want to work for a scenario where in the WSN network (comprising of micaz motes), one of the node say node 'A' (base-station connected to PC) needs to do a broadcast to all the other nodes. The remaining nodes communicate via multi-hop communication. To achieve this, I want node 'A' to have a very high transmission power whereas for the remaining nodes low transmission power. I use the CC2420_DEF_RFPOWER variable to set the RF power. say for node 'A' this value is 31 and for the remaining nodes it is 2. Now, the problem is since, nodes have different transmission power, if there is a multi-hop communication going on between the other nodes, then node 'A' should not do the broadcast as this may lead to collisions. node 'A's broadcast is supposed to reach all other nodes without the packets being corrupted. How do I achieve this? Is there a way wherein I can increasing the carrier sensing capabilities of node 'A' so that node 'A' can sense the multi-hop communication that is going on between other nodes? Please suggest.
Thanks Vikram
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