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Wireless Sensor Network is one of the most advance technology in the field of Information Technology because of the various applications implemented in. Coverage issue is a fundamental research in the Wireless Sensor Networks. Many Researchers have implemented techniques in order to reduce the coverage area of the sensor node to conserve the nodes energy. In this paper, a model to use intelligent...
There have been several geographic routing protocols proposed for disseminating data in Wireless Sensor Networks. In these protocols, routing is based on the location of neighboring nodes and the selection of the next hop is done based on a direction based or a location based strategy. In this paper, a novel routing protocol that makes use of this direction based strategy to disseminate data in the...
Wimax is an broadband wireless technology based on IEEE 802.16. It is very helpful and cheaper than other possible solutions. It is purely based on the 4G technology for the upcoming generation. In wireless technology the major problem is speed, Quality of Service, data rates in order to overcome that they going for some valuable technology. In this paper we consider WIMAX and WLAN for controlling...
To ensure resilient and reliable meter data collection that is essential for the smart grid operation, we propose a QoS-oriented wireless routing scheme. Specifically tailored for the heterogeneity of the meter data traffic in the smart grid, we first design a novel utility function that not only jointly accounts for system throughput and transmission latency, but also allows for flexible tradeoff...
Ant colony optimization algorithm is widely used in various NPC problems for the global optimization, self learning ability and other characteristics, and achievements were made in WSNs field. Based on the study of Ant colony algorithm, in this paper, we propose a new energy-effective QoS routing algorithm. The algorithm is to speeds up the convergence of ant colony algorithm by using SNGF to optimize...
Achieving high Quality of Service (QoS) over wireless multihop networks calls for enhanced routing/scheduling algorithms. Towards this direction it has been shown in the literature that the Greedy Backpressure algorithm which combines routing based on greedy hyperbolic embedding with backpressure scheduling, achieves to improve delay while remains throughput optimal. However, the performance of such...
WMN (Wireless Mesh Network) is a useful wireless multi-hop network with tremendous research value. A good routing mechanism for WMN can use the whole bandwidth of the network and can assure the quality of service of traffic. Through simulations we verify that the routing metric ETX (Expected Transmission Count) cannot assure good quality of wireless links. To improve the routing performance, a QoS-assured...
A multicommodity Minimum-Cost Maximum-Flow algorithm for routing multiple unicast traffic flows in infrastructure wireless mesh networks, represented as commodities to be routed in an undirected or directed graph, is presented. The routing-cost per edge can be any metric, i.e, a delay, a SNR, etc. To minimize resource-usage and transmission power, the routing-cost is formulated as a Bandwidth-Distance...
In a near future, wireless mesh networks (WMNs) and multimedia content will be abundant technologies/applications in the Internet. Hence, in order to keep and attract new customers, as well as, reduce operational costs, the development of new quality level control schemes are needed and it is one of the key requirements for the success of next generation wireless multimedia systems. With this goal...
Delivery of high-quality streaming services over multi-hop wireless mesh networks (WMNs) is a challenging research problem because of quality fluctuation and interference of wireless links in WMNs, as well as strict throughput, delay, and reliability requirements of streaming applications. In this paper, we propose a Network Assisted Peer-to-Peer (NAP2P) system for file-based media streaming services...
Wireless Multimedia Sensor Network(WMSN) is a blooming field due to the development of CMOS cameras and Microphones which are wirelessly interconnected devices that are able to retrieve multimedia content such as video and audio streams, still images and scalar sensor data from the environment. As of today, almost all deployed wireless sensor data networks measure scalar physical parameters like temperature,...
Anypath routing, a new routing paradigm, has been proposed to improve the performance of wireless networks by exploiting the spatial diversity and broadcast nature of the wireless medium. In this paper, we study the problem of finding an anypath subject to multiple (K) constraints, which has been proved to be NP-hard. We present a polynomial distributed K-approximation routing algorithm. Our algorithm...
Routing in Wireless Mesh Algorithm is concerned with finding “good” source destination paths and has been an active research area since many years. Much of the work is focused on the improvement of global resources, or on the performance of individual transfers. Either case, the routing problem can be casted as a multi-objective with objectives such as load-balancing, end-to-end delay, and path capacity...
Vehicular networks are highly mobile wireless networks that can provide wide variety of services and applications such as public safety communications, crash avoidance, multimedia and Internet access in highways. Designing routing algorithm in vehicular network is a challenging task due to rapidly changing topology and high speed mobility of vehicles. One of the critical issues of vehicular network...
The significant increase in Voice over IP (VoIP) service providers over the last few years has prompted an increase in VoIP services and currently poses additional challenges when deployed on wireless mesh network. Packet losses and delay due to interference in a wireless mesh network degrade significantly the VoIP call quality. In this work, we propose an approach inspired of Traffic Engineering...
Wireless Sensor Networks (WSNs) have inherent and unique characteristics rather than traditional networks. They have many different constraints, such as computational power, storage capacity, energy supply and etc. Energy aware routing protocol is very important in WSN, but routing protocol which only considers energy has not efficient performance. Therefore considering other parameters beside energy...
We present a new method for routing MAC frames at layer 2 (L2) within an 802.11 MANET. The new method, Multihop Clear Channel Assessment (MCCA), improves on the RTS/CTS mechanism used in the 802.11 DCF by extending it from a single hop protocol to a multihop one. Such an approach can, in some circumstances, eliminate the need for a routing protocol at layer 3 (L3), since frames, instead of being routed...
Adaptive QOS routing algorithm (DAQR) based on discrete particle swarm algorithm for wireless sensor networks is proposed to solve the problem that the existing QOS routing algorithms can't take count into both adaptive ability and network energy consumption in room environment. In the work, different QOS parameters are defined as different optimization objects on the research basis of AIRE and WAIER...
This paper addresses the problem of video multicast for heterogeneous destinations in mobile ad hoc networks. Multiple Description Coding (MDC) is used for video coding. MDC generates multiple independent bit-streams, where the multiple bit-streams are referred to as multiple descriptions (MD). Furthermore, MDC enables a useful reproduction of the video when any description is correctly received....
Cognitive radio (CR) emerges as a key technology to enhance spectrum efficiency and thus creates opportunistic transmissions over links. Supporting the routing function on top of numerous opportunistic links is a must to route packets in a general cognitive radio network (CRN) consisting of multi-radio systems. However, there lacks complete understanding of these highly dynamic available links and...
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