ABSTRACT
There are a number of topologies for radio communications NWs. We here discuss some that are very suitable for WSNs [4].
9.2.1 Star Network
In a star NW (SNW), single BS sends and/or receives a message to a number of remote SD nodes. In SNW the remote nodes can only send or receive a message from the single BS. These nodes are not allowed to send messages to each other in SNW, this means that the individual SDSs are not directly connected – they are connected through only the single BS. This type of WSN is simple and it keeps the power consumption of the remote node to a minimum. The SNW allows a low latency (delay) communications between the BS and the remote node. The demerit of the SNW is that the BS should be within the RF transmission range of all the nodes. The SNW is not very robust for it depends only on one node to manage the NW.
