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Hi Ahmad, Since Aqua-Sim 1.0 is only using a single channel model, I don't believe there is anyway to hard code a unique range per node on the channel (assigning distCST_ to a direct value). While you may be able to use the TxPower on each node's phy layer to uniquely handle transmission range (since dependent on the sink's receiving threshold a given packet may be non-decodable and therefore dropped by the sink). -Robert On Thu, Jun 1, 2017 at 10:53 AM, ahmad ababneh <[log in to unmask]> wrote: > Dear All, > I want to schedule transmissions between sensor nodes and sinks in UWSNs. > Suppose there are 100 sensor nodes and 2 sinks, the result the first 50 > nodes will send to sink1 and the second 50 nodes send to sink2. by default > the transmission range in aqua-sim is the same for all nodes. so i need to > change the transmission range for each node based on distance between node > and its sink. So, how do I change the transmission range for each node? > Thank you in advance. >