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Opportunistic networking-forwarding messages in a disconnected mobile ad hoc network via any encountered nodes-offers a new mechanism for exploiting the mobile devices that many users already carry. However, forwarding messages in such a network is trapped by many particular challenges, and some protocols have contributed to solve them partly. In this paper, we propose heterogeneous content-aware...
We discuss protocols for all-to-all dissemination in ad-hoc wireless networks. We identify shortcomings and challenges related to high traffic and explore their causes by observing the performance at the MAC layer. Through simulations we show that a congestion assessment mechanism can reduce more than 1/4 of the traffic on a good part of the nodes without affecting dissemination performance. We conclude...
MAODV (Multicast Ad-hoc On-demand Distance Vector), a well-known multicast routing protocol in MANETs, has been proposed over ten years. It is originally designed for single-source multicast operation and thus inefficient when applied to multisource scenario. In addition, MAODV requires a route rediscovery procedure to recover multicast routing tree from partition of the tree and takes a long time...
In a Mobile Ad Hoc Network (MANET), mobile nodes may rapid change their positions and thus not only change the network topology but also may cause routing path disconnections frequently. Those routing protocols of on-demand would use flooding to broadcast RREQ (Route Request) messages to establish transmission route. However, flooding may cause broadcast storm and impair network performance severely...
Deployment of video communication services over mobile ad hoc networks faces numerical obstacles since the networks are characterized by limited and unpredictable bandwidth. Following the tenet of service-orientation, this study proposes a cross-layer design for fine-grained adaptive transmission of real-time video over time-varying channels. Specifically, the sender accurately estimates the current...
A distributed dynamic slot assignment scheme for multi-channel Time Division Multiplex Access (TDMA) based wireless Ad Hoc networks is presented in this paper. As exclusive control channels are introduced, hidden terminals are enable to receive packet whereas transmit packets are avoided. Similarly, exposed terminals are enable to transmit packets while receive packets are avoid. Thus high efficient...
In this paper, the performances of FSR wireless routing protocol under different parameters are simulated based on ns2 network simulation platform. The reference point group mobility model is selected as the mobile ad hoc network mobility model. Through the detailed analysis of the results, the three features of the FSR routing protocol in terms of end-to-end delay, packet delivery ratio and routing...
The Internet of Things is a rather new concept in IT field. The However, the research of routing protocols of Internet of Things is still a blank, while route designing is an important part in the research of Internet of Things. In this method, we designed a routing method that can take function as routing destination not just nodes. The improvement is more suitable for the use in internet of things,...
In the few last years, there is an increasing need of QoS guarantees for multimedia and real time applications in mobile ad hoc networks. While several QoS routing protocols were proposed, adaptive routing has not be enough exploited. We propose in this paper a new delay oriented adaptive routing protocol for mobile ad hoc networks. We integrate a mean delay estimation model at each node in our protocol...
In this paper, we unified two new algorithms, i.e., to selectively Bordercast the control packets in order to reduce the network load by limiting the number of control packets when ZRP searches for a new route. The second algorithm is proposed to optimize the performance of Query control mechanisms for the Zone Routing Protocol (ZRP) for mobile ad hoc networks for communication on an urban terrain...
We present a statistical approach to distributed detection of local latency shifts in networked systems. For this purpose, response delay measurements are performed between neighbouring nodes via probing. The expected probe response delay on each connection is statistically modelled via parameter estimation. Adaptation to drifting delays is accounted for by the use of overlapping models, such that...
Mobile Ad hoc networks (MANETs) are composed of a collection of independent nodes usually connected by low bandwidth Radio Frequency (RF) links which are challenging for transmitting video and high bandwidth applications for rescue workers in emergency situations. Earlier we proposed a routing protocol, called AODVH to use for high bandwidth communication for search and rescue operations in a disaster...
In delay tolerant networks (DTNs), power management will likely play a critical role in the system design. Because these networks are partitioned in nature, mobility is typically required for data routing. Since nodes must physically move to create links, there can be significant routing delays, and the network must be alive for a long enough time to be of any practical use. Therefore, a power management...
The primary responsibility of a medium access control (MAC) protocol in Ad hoc Network is the distributed arbitration for the shared channel for transmission of packets. The performance of Ad hoc Network depends upon the sincerity of the MAC protocol. The MAC protocol of this type of network should be distributed, faired & free from hidden and exposed terminal problem. It should also support real-time...
MANETs are vulnerable to a number of security threats due to their flexible characteristics such as dynamic topology formation, openness of the wireless medium and resource constraints. Wormhole attack is one of the most sophisticated forms of security threats in MANET wherein two or more colluders silently record packets at one location and then tunnel them to another location in the network. As...
The area of mobile ad hoc networking has gained widespread interest of the network research community in recent years because of the ability of the MANETs to provide truly distributed and decentralized communication facility on ad hoc basis. But due to the bandwidth constrained links and limited transmission range of the mobile nodes, MANETs suffer from the inability to cover a wider network area...
In this work, we establish a general framework for investigating statistical QoS provisioning in mobile ad hoc networks. Though the throughput and average delay in wireless ad hoc works have been has been intensively studied in the literature, statistical delay guarantee provisioning in large scale ad hoc networks has not received enough attention. A realtime application, e.g., interactive game and...
In the few last years, there is an increasing need of QoS guarantees for multimedia and real time applications in mobile ad hoc networks. While several QoS routing protocols were proposed, adaptive routing has not be enough exploited. This paper introduces a new multipath quality of service (QoS) routing protocol for mobile ad-hoc networks (MANETs) called QoSBeeManet. Based on the autonomic bee communication...
Integrating nodes in a MANET to the Internet require either a connection to the Internet or they can connect to the Internet through the Internet gateways or servers. For the second case a node in a MANET has to find out the gateway or server to connect to the fixed nodes in the Internet and it can do so either by broadcasting a gateway discovery request message or it may depend on periodic gateway...
In mobile ad hoc networks, routing protocol area is a challenging issue. In spite of recent research, MANETs lack load balancing capabilities, and thus, they fail to provide expected performance especially in the case of a large volume of traffic such as real time traffic. In this paper, we propose a simple but very efficient algorithm to support Quality of Service (QoS), by the use of load-distributing...
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