Abstract
Energy scarcity and interference are two important factors determining the performance of wireless ad-hoc networks that should be considered in depth. A promising method of achieving energy conservation is the transmission power control. Transmission power control also contributes to the mitigation of interference thereby promotes throughput by means of rendering multiple hosts to communicate in the same neighborhood simultaneously without impairing each other’s transmissions. However, as identified previously in the literature, traditional hidden terminal problem gets deteriorated when transmission power control mechanism is intended to be applied. In this article, we discuss the primary details about the power usage and throughput deficiency of the traditional 802.11 RTS/CTS mechanism. Improvements by means of power control are introduced as well as the solutions to the challenges likely to emerge because of the usage of diverse power levels throughout the network.
Highlights
Wireless ad-hoc networks (WANETs) have gained increasing popularity because of the ubiquitous communication needs with satisfying costs
We discuss the primary details about the power usage and throughput deficiency of the traditional 802.11 RTS/CTS mechanism
To achieve spatial reuse maximization, Medium Access Control (MAC) protocol must coordinate the hosts to access the common medium depending on their distances to avoid interfering another ongoing transmission whilst not to prevent an upcoming nondestructive transmission but declared as possibly interferer because of the traditional Physical Carrier Sensing (PCS) and Virtual Carrier Sensing (VCS) mechanisms [21]
Summary
Wireless ad-hoc networks (WANETs) have gained increasing popularity because of the ubiquitous communication needs with satisfying costs. Since lower energy signals do not propagate to further distances, the size of the area they affect in terms of interference reduces By this way, more hosts possibly stay out of the interfering range of the node and can start communication without being affected by the ongoing transmission which results with throughput improvement in the network. One of the primary challenges in wireless communications to be considered is the hidden terminal problem that is firstly identified by Tobagi and Kleinrock [8,9] Since it is not possible for a sender to detect a collision at the receiver side, hosts lay at the opposite side of the receiver are hidden to the sender. Details about the hidden terminal problem and RTS/CTS mechanism are introduced
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