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In this work, the analysis of the performance of a Wireless Sensor Network integrated within urban infrastructure employed in an Infrastructure to Vehicle network will be presented. Features of a realistic scenario in which urban vehicles will be located will be analyzed with the aid of in-house implemented 3D Ray Launching code, in which the scenario, including urban furnishing, vehicles and users...
Vehicular ad hoc networks based on IEEE 802.11 OCB suffer from channel congestion, which will be critical for safety applications when the channel becomes saturated. Therefore, decentralized congestion control (DCC) is needed that keeps the channel load under a pre-defined threshold. In the European system for vehicular communication, a DCC-gatekeeper has been inserted into the protocol stack that...
Vehicular ad hoc networks have received considerable attention in recent years. Being a subclass of mobile ad hoc networks, VANETs have some different characteristics than MANETs such as, fast moving nodes and frequent disconnections in the network. Existing routing protocols of MANETs do not perform well under these dynamic conditions in VANETs. We present a two-level hierarchical routing protocol...
Named Data Networking replacing the TCP/IP architecture has emerged as a state-of-the-art tendency in VANETs because of its high efficiency in content distribution and Vehicle-to-Vehicle (V2V) communications. After this paradigm shift in VANETs, the traditional gateway selection algorithms and Peer-to-Peer content downloading protocols become inappropriate for vehicles to cooperatively acquire big-size...
In this paper, we investigate how to network smart-phones for providing communications in disaster recovery. By bridging the gaps among different kinds of wireless networks, we have designed and implemented a system called TeamPhone, which provides smartphones the capabilities of communications in disaster recovery. Specifically, TeamPhone consists of two components: a messaging system and a self-rescue...
The interconnection of distributed sensor nodes that is used to measure the sensor data in remote locations is called as Wireless Sensor Network (WSN). Each of the sensors is interfaced with a microcontroller to form wireless sensor node. Different types of devices like PDA'S, laptops, television etc., are used in consumer electronics that use different software and protocols. There is no common communication...
Flooding is the simplest way of broadcasting, in which each node in the network retransmits an incoming message once. Simple flooding technique in wireless Ad-hoc networks causes the broadcast storm problem. However, this technique is inefficient in terms of resource consumption such as bandwidth and energy. This paper presents a new hybrid scheme that combines different techniques that collaborate...
Internet technology and multimedia applications practices increasing day by day, a stimulation of Quality of Service (QoS) in Mobile Ad hoc Networks (MANETs) is now a great interest area for companies to serve better for their users. This research work focuses on design and development of new Energy Aware Multicast Cluster (EAMC) based routing to enhance the QoS of the MANETs. This proposed routing...
Applications of Wireless Mesh Network(WMN) are now visible everywhere in the world ranging from battle field to community networking and satellite constellation to university networking. Routing on WMN is one of the most sought research topic these days. Many routing protocols have been proposed by the researchers and works are being done in different dimensions. For better scalability Hierarchical...
Ad hoc networks are promising technologies that is easily deployable and dynamically adaptable. However, ad hoc networks can experience severe impairments caused by node motion in the case of Mobile Ad hoc NETworks (MANETs) or scarce node density in the case of Wireless Mesh Networks (WMNs). In this work, we are mainly interested in WMN. The WMN consists of wireless mesh clients (WMCs) and wireless...
Reducing energy consumption and packet loss in-volves congestion control and load balancing in MANETs. Thus, this paper introduces an efficient routing technique called the multipath load balancing technique for congestion control (MLBCC) for MANETs to efficiently balance the load among multiple paths by reducing congestion. MLBCC introduces a congestion control mechanism and a load balancing mechanism...
International military forces are increasingly engaged in coalition-based operations with an expectation that future coalition forces will be tightly interoperable even down to the tactical level. At the same time, there is an emerging trend towards increasing connectivity at the tactical edge, with mobile ad hoc networking (MANET) seen as a key enabling technology for this improved connectivity....
As more and more tactical Mobile Ad-Hoc Networks (MANETs) are deployed at the edge, there is a need to interconnect these heterogeneous MANETs to enable increased connectivity and robust communication services to the war fighters. Traditionally, Border Gateway Protocol (BGP) is considered the de facto standard inter-domain routing protocol. It was originally designed for wired networks and does not...
In a mobile IoT system, IoT devices are located in a moving vehicle such as in a car, in a mobile robot or in an Unmanned Aerial Vehicle (UAV). An IoT Gateway aggregates data from various IoT devices located in a moving vehicle and its surroundings. This GW could also be located in the vehicle itself. We consider infrastructure as well as ad-hoc mode scenarios here. In infrastructure mode, this mobile...
This paper presents the DASH7 Alliance Protocol 1.0. It is an industry alliance standard for wireless sensor and actuator communication using the unlicensed sub-1 GHz bands. The paper explains its historic relation to active RFID standards ISO 18000-7 for 433 MHz communication, the basic concepts and communication paradigms of the protocol. Since the protocol is a full OSI stack specification, the...
Typical routing protocols maintain, in their RIB (Routing Information Base) entries permitting destination-based forwarding: for a given data packet, the choice of next hop is a function of the destination address only. However, in deployments where a given network is multi-homed, and where ingress filtering is commonly applied, a routing protocol is required to be able to provide routes so as to...
Wireless mesh networks (WMNs) can be considered as a key technology for next-generation wireless networking. However, field trials and experiments prove that the performance of WMNs still below expectations. Therefore, several challenging research issues need to be determined. The routing protocol is one of the important factors to be improved to be robust, scalable, secured and efficient. This paper...
Fault-tolerance is one of the major issues in ad hoc networks. Failure probability is greater because of limited energy level of mobile nodes and dynamic topology constraints. Whenever a node is dubious to be attacked, checkpointing of data is done on some reliable and trustworthy node. So, evaluation of trust factor of a node is an important aspect that largely influences the recovery process. This...
Ambient information collected by wireless sensor networks (WSNs) (e.g. space, environment or physiological data) is made available to end-user applications via gateways. In situations where infrastructure-based networks are not available, these gateways and end-user applications are usually implemented as distributed entities forming P2P overlays. Enabling the interconnection of these application...
Secure and reliable communication is very important for a lot of different use cases. One major area of application is Network Enabled Capabilities (NEC). Security and reliability are even harder to achieve for the tactical domain, when different nations with a variety of communication technologies have to form a heterogeneous ad hoc network. CoNSIS (Coalition Networks for Secure Information Sharing)...
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