When working on terrestrial wireless sensor networks (WSN), we are dealing with electro-magnetic waves to propagate our signals from a sender to a receiver. However, underwater sensor networks are significantly different from their terrestrial counterpart due to the usage of acoustic signals for communication. In underwater environments we are unable to depend on radio signals
Journals Open Call In this list you can find some open journal in Wireless Sensor Networks.
Abstract Recent developments in biosensor and wireless technology have led to a rapid progress in wearable real time health monitoring. Unlike wired networks, wireless networks are subject to more packet loss and congestion. In this paper, we propose a congestion control and service prioritization protocol for real time monitoring of patients’ vital signs using wireless biomedical sensor networks. The
The most prominent standard in low-power radio technology is IEEE 802.15.4. It defines both the PHY layer (e.g., the modulation scheme used) and the MAC layer (e.g., in a network, which mote talks when, on which channel). The first revision of the standard was published in 2003, with revisions in 2006 and 2011. Several working
The IEEE802.15.4e standard was published in 2012 as an amendment to the Medium Access Control (MAC) protocol defined by the IEEE802.15.4-2011 standard. The Timeslotted Channel Hopping (TSCH) mode of IEEE802.15.4e is the object of this page. TSCH was designed to “allow IEEE802.15.4 devices to support a wide range of industrial applications”. At its core is
The Internet is composed of many networks, a number of which are typically traversed by a packet on its way from source to destination. Thus, for each type of link layer technology which the network is based on, there needs to be an “IP-over-X” specification that defines how to transport IP packets. In many cases, to map the
The IETF Constrained RESTful Environments (CORE) working group has defined the Constrained Application Protocol (CoAP) which easily translates to HTTP for integration with the web, while meeting specialized requirements such as: multicast support, very low overhead, and simplicity for constrained environments. CoAP has been designed as a generic protocol for LLNs taking into account the features of
RPL is a distance vector routing protocol (defined in RFC6550). It can operate on top of IEEE802.15.4. The routing layer is responsible for relaying packets across multiple hops separating source and destination nodes. It is divided into a forwarding engine, which uses a routing table to decide which neighbor node is the next hop for
Abstract—terrestrial wireless sensor networks (TWSNs) are subject to extensive research and development. Numerous applications take advantage of low-cost, small-sized, easily configurable and scalable TWSN nodes to monitor, detect, and track various environmental phenomena and events. The recent advancement in electronics and sensor miniaturization and low-power technologies enabled TWSNs to extend their reach to underwater applications.
Wireless sensor networks (WSNs) find wide applications in environmental monitoring. MAC protocolsplay a vital role in controlling the energy consumption in a WSN. It tells the network when and how to access the medium. Time Division Multiple Accesses (TDMAs) are well suited for these real time applications. Because it prevents radio interference, and reduces energy consumptions. In