ABSTRACT
Wireless networks are characterized by nodes (or stations, or users) that are connected to each other by wireless links. Accordingly, one main feature of such networks is mobility which results in dynamic topology when the position of nodes changes in time. Network setup in mobile wireless ad-hoc network is a tedious task because of rapid dynamic nature of these networks while communication in wired networks (Internet) or even stationary wireless networks is much easier to manage. In wireless networks, the communication channel is a broadcast medium since the transmitted signal by a node can be received by any other node that is in the transmission range of the transmitter. In some cases, a node transmits to a receiver while another node is also trying to send packet to the same receiver. If these two transmitters are outside of each other's transmission range and unaware of the other node existence, it is possible that both nodes try to transmit packets to the same receiver and cause collision. This situation is known as the hidden terminal problem and it does not allow the receiver to decode the received signals. Figure 31.1 demonstrates the hidden terminal problem.
