Abstract
Wirelesse Nanosensor Networks (WNSNs) contain a large number of independent and mobile nanodevices assembled with nanotransceivers and nanoantennas to work in Terahertz frequency band (0.1-10THz). These nanodevices exploit the properties of modern nanomaterials to recognize new varieties of events at the nanoscale, such as the presence of harmful viruses or bacteria and the detection of low concentrations of chemical and harmful gas molecules. Communication between nanonodes can be established by using molecular or electromagnetic communication approaches. One of the major problems of wireless nanosensor networks is the limited resources of nanodevices (e.g., computation, memory and power). On the other hand, such limited capacity cannot simply ensure communication between nanonodes using the flooding mechanism, which affects network performance and increases resource utilization. This paper considers the electromagnetic-based wireless nanosensor networks, and proposes a New Adaptive Probabilistic Based Broadcast Using Neighborhood Information. Simulations have been conducted using Nanosim simulator in order to compare our new schemes with the fixed probabilistic based broadcast. The experiments show that the proposed approach gives good results in terms of Packet Delivery Ratio (PDR reached 95%.), the amount of energy consumed (significantly reduced) for all the categories of density. No startup setup is required: the nanonodes adjust by themselves the broadcasting probability based on neighborhood collected information.
Highlights
The wireless nanosensor network has gained increasing attention over the past two decades due to the requirement for discovering and measuring chemical and physical phenomena in difficult-toreach biological, industrial and environmental systems that are within the nanoscale level
The Wirelesse Nanosensor Networks (WNSNs) is generally composed of several nanosensor nodes that are autonomous, tiny, low-cost and low-energy
An EM-WNSNs overview and the work related to existing information dissemination mechanisms in wirelless nanonetworks are presented
Summary
The wireless nanosensor network has gained increasing attention over the past two decades due to the requirement for discovering and measuring chemical and physical phenomena in difficult-toreach biological, industrial and environmental systems that are within the nanoscale level. Nano-machines are sensing devices with at least one of their sensing dimensions being no greater than one to hundred nanometers These are the most elementary significant units in the nanoworld that can perform very simple tasks, detection and actuation [4]. The WNSN is generally composed of several nanosensor nodes that are autonomous, tiny, low-cost and low-energy These nanonodes collect data from their environment and collaborate to transmit the detected data to centralized processing units called nanointerfaces for further processing [3]. The communication capability will allow the nano-machine to operate synchronously, supervised and cooperatively to achieve a common goal. This will greatly increase the capacities and application areas of nano-machines.
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