The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In wireless sensor networks, sensors at different locations in the field use different energy levels to propagate sensing data back to the sink or base station. This causes unbalanced energy usage among sensors and also lowers the network lifetime. Currently there are several techniques to mitigate this problem, such as deploying multiple sinks, adding more sensors on heavy traffic areas, or managing...
The Internet of Things (IoT) is a vision which real-world objects are part of the internet. Every object is uniquely identified, and accessible to the network. There are various types of communication protocol for connect the device to the Internet. One of them is a Low Power Wide Area Network (LPWAN) which is a novel technology use to implement IoT applications. There are many platforms of LPWAN...
Delay-Tolerant Network (DTN) is a sparse network of mobile wireless nodes which there is no end-to-end connectivity between nodes. DTN is used to provide communications in the extreme terrestrial environments, mobile environments, or in certain situations that it is impossible for infrastructure network to deliver data. In this paper, we will focus on how to utilize node power consumption in order...
In Wireless Sensor Network (WSNs), clustering technique is widely used to balance energy usages consumed by the sensors. In each round of operation, a number of sensors are chosen to be candidate cluster head (CCHs) with a fixed and predefined probability value. CCHs then compete among themselves to become Cluster Head (CH) based on some criteria such as its remaining residual energy. CH role is rotated...
Epidemic-based routing protocol in Delay-Tolerant Network (DTN) is considered to provide a good network utilization in term of delivery probability, and average delivery delay. However, to achieve the goal of a better utilization of the network, an efficient buffer management and scheduling policy are needed. In this paper, we introduce a buffer management and scheduling policy for further improvement...
In multi-hop clustering Wireless Sensor Networks (WSNs), Cluster Head (CH) role is rotated among sensor nodes in order to balance their residual energy usages. However, to forward data from CHs to sink or Base Station (BS), CH nodes that are placed near to the sink consume more energy than CH nodes that are further away. This is known as “Energy Hole” problem in WSNs. This paper proposes an algorithm...
Sleep scheduling mechanisms have been widely used in wireless sensor networks so as to extend the lifetime of networks. Sensors are able to decide to be either in active or sleep mode to save the energy. Sensing coverage area is an important factor for some applications such as Intrusion Detection. It is necessary to have the full-sensing-covering set of active nodes on these applications. In this...
A large portion of energy-aware routing protocol for wireless sensor networks are cluster-based. In cluster based approach, energy at the cluster head nodes are drained more rapidly compared to other member nodes. Dynamically change cluster heads periodically could partialy mitigate this problem, but clusters that are far from base station still suffer from large amount of energy for directly transmit...
A large portion of energy-aware routing protocol for wireless sensor networks are cluster-based. In cluster based approaches, power of the cluster head (CH) nodes are drained more rapidly compared to other member nodes. Dynamic CH approach could partially alleviate this problem. But even with dynamic CH approach, energy is not uniformly dissipated among all nodes. In this paper, we propose a new energy-aware...
KAD is one of the most popular Peer-to-Peer (P2P) networks on the Internet. It uses Kademlia-based Distributed Hash Tables (DHTs) to form a tree-structured P2P network. Iterative routing algorithm is used on Kademlia to perform key-value DHT lookup operation based on XOR distance of peer identifiers, which are randomized. Therefore the lookup operation might increase the lookup latency, as well as...
Due to many unique characteristics on the MANET environment such as node's autonomy, highly limited and shared resources, dynamic topology, etc. And these characteristics introduce to the new MANET aspects such as node autonomy, node's roles and resources. The needs for each node to control its resources and roles participated on the MANET is increasing. In this paper we proposed a design of policy-based...
Distributed multimedia applications usually require multiple QoS performance guarantees. However, in general, searching such a route in the network, to support multimedia applications, is known to be NP‐complete. In this paper, we propose a new heuristic QoS routing algorithm, called “QoSRDKS”, for supporting multimedia applications in high‐speed networks. QoSRDKS is a modification of rule‐based Fallback...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.