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.
Mobile devices have changed from being terminal equipment for making voice calls, video calls, playing games and sending messages to including differing functionalities such as acting as a server and client for sharing information. Information sharing directly between modern mobile phones can be done using Bluetooth or WiFi functionalities. Such a network does not need a fixed infrastructure, thereby...
Routing messages over vehicular ad hoc networks (VANETs) is usually achieved through geographic routing protocols. In such networks, the vehicle dynamics causes rapid changes on the vehicle density and the communication links. In order to be efficient to route messages from a vehicle to another, we need to locate each node (its position), this is achieved by a location service. This study works on...
Routing Protocol for Low power and lossy networks (RPL) is a proactive algorithm for Low-power and Lossy Networks (LLNs). Recent growth in Internet of Things (IoT) applications has made proactive handling of mobility apparent. While RPL does not tackle mobility, mRPL addresses it by adopting a proactive Hand-Off strategy. Since this strategy follows a greedy approach to select the next hop, a best...
Content-centric networking (CCN) is being considered as a paradigm for the Future Internet. CCN is focused on the content itself rather than the host. CCN can be used to enhance the performance of delivery latency, robustness, and security. One of the immediate needs that CCN has to address is mobility support because the number of users who are using mobile devices is increasing rapidly. Users demand...
As one of the most important restrictions on the application of wireless sensor network, energy consumption is also the main factor which ZigBee specification focuses on. However, current network formation and routing protocols described in ZigBee specification do not fully address power consumption issues. Most of improvements were tested under single network condition so far and the optimization...
The underwater acoustic channel features long and variable propagation delay, high bit error rate and limited bandwidth. Moreover, underwater mobile networks consisting of Autonomous Underwater Vehicles (AUVs) for surveillance and monitoring applications often suffer from intermittent connectivity as nodes move around the area of operations. Therefore, this scenario is appropriately modeled as a Delay-Tolerant...
Wireless technology based on the IEEE 802.11 standard is used to support multiple types of communication services (data, voice, and image) with different QoS requirements. Node mobility creates a continuously changing communication topology in which paths break and new one form dynamically. The routing table of each router in an adhoc network must be kept up-to-date. MANET uses Distance Vector or...
The concept of transition from IPv4/IPv6 network is currently being extensively studied to gain high level compatibility for easy, independent deployment ofIPv6. The transition between IPv4 and IPv6 internet will be a very long process as they are completely incompatible two protocols. IPv6 offers various features including Larger addressing capacity and capabilities, QoS control, encryption and decryption,...
The mobility model is one of the most important factors in the performance evaluations of a mobile ad hoc network (MANET). The Manhattan mobility model has been used to model the node's mobility, where the movement pattern of mobile node on streets and roads defined by maps. However, DakNet ad hoc network that uses wireless technology to provide digital connectivity among villages, kiosks and private...
Internet population is growing quickly: 1.8 billion people were connected to the Internet at the end of 2009 and this number is expected to grow to 2.2 billions within 2013. Right now, these people are, and will be even more surrounded by heterogeneous devices with advanced networking and rendering capabilities; in their daily life, they will demand a wide set of services and the opportunity to access...
Mobility is one of the challenging task in the routing of wireless ad hoc networks. The spanner local Delaunay triangulation (LDel) may not preserve its geometric properties if the nodes in the network move around which leads to the degradation of network performance. In this paper, we propose a spanner called mobile local Delaunay triangulation (MLDel) which performs better even at high mobility...
Relay is emerged recently as a promising solution not only to improve coverage but also end-to-end date rate. How to manage the radio resources effectively for the integrated cellular network are the key issues to be studied. The paper re-evaluates the traditional concept of adjustment and optimization for the call routing and congestion control as call routing and admission control (CRAC). With respect...
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.