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Network coding has been studied to enhance reliability and robustness of communications in lossy environments such as high mobile tactical situations. Previous network coding research has exploited on-demand multipath routing, multicasting, or broadcasting to leverage spatial redundancy and improve communication performance. However, one should not ignore proactive routing protocols such as link state...
Wireless sensor network (WSN) deploys tiny wireless sensor nodes to communicate with each other with limited processing speed, power and security measures. A recent WSN routing protocol defined as Secure Real-Time Load Distribution (SRTLD) has been developed to provide realtime transfer, high delivery ratio, and longer sensor node lifetime. However, SRTLD uses broadcast packets to perform neighbor...
Supporting effective and efficient data delivery in delay tolerant networks (DTNs) is a challenging problem due to the nature of the network. In this paper, we propose to use network coding technique based on Growth Code to improve the performance of data delivery in DTNs. We incorporate Growth Codes into Epidemic Routing and First Contact routing in DTNs to provide two network coding based routing...
A variety of network deployments in disaster recovery, fire fighting and military scenarios create networks that do not form a connected network all the time. In such scenarios, paths between a source and destination may be created over time when nodes encounter each other due to node mobility. Many routing algorithms that can route messages in such delay-tolerant networking (DTN) settings have been...
In highly dynamic airborne networks, multi-hop routing becomes increasingly difficult due to high mobility, intermittent links and link quality, and the need to scale. Traditionally, airborne tactical networks have leveraged existing MANET proactive, reactive, and hybrid routing protocols with modifications for cross-layer information, to provide multihop routing. Although there has been some success...
Ad Hoc networks usually consist of mobile nodes, which are characterized by lower computing and energy resources. For real-time streaming applications, choosing the shortest path for these kinds of sessions is insufficient. Such networks must operate energy-efficiently to maximize the lifetime of mobile devices and applications. In this paper we develop a energy-ware and delay-aware routing approach...
Due to the lack of end-to-end connectivity between mobile nodes, delay tolerant networks (DTNs) exploit the opportunistic forwarding mechanism. This mechanism requires nodes to forward messages in a cooperative way. Nevertheless, nodes may exhibit selfish behavior, in particular when they are constrained with respect to the battery energy, computational power, and/or storage space. In this paper,...
Demands for avionics Wavelength Division Multiplexing (WDM) network have been increasing dramatically in multicasting applications such as the in-flight multimedia in recent years. The topic of multicasting routing problem has been investigated with enthusiasm, because a proper design of routing can not only make full use of the resource, but also improve the performance of networks. However, different...
Previous Delay Tolerant Network (DTN) routing algorithms exploit either past encounter records (probabilistic routing) or social network properties (social network based routing) to derive a node's probability of delivering packets to their destinations. However, they only have a local view of the network, which limits the routing efficiency. Also, when two nodes meet, they have to exchange the delivery...
IRDT (Intermittent Receiver-driven Data Transmission) realizes low-power communication between neighbor sensor nodes. This paper proposes combination IRDT-GEDIR of IRDT and GEDIR which is an on-demand location-based ad-hoc routing protocol. Here, for shorter end-to-end transmission delay, pseudo speed of data message transmission is applied for next-hop selection in an intermediate node and on-line...
Nowadays, the end-users have multitude of offers that make service prices decrease in using a network environment with multiple-operators and multiple-network. Consequently, the competition between network providers increases. The customer is today in a strong position with ability to select the best one among different competing providers. Besides similar pricing schemes, which are a useful decision...
Content Delivery Networks (CDN) are overlay network of servers being used to deliver growing traffic demands on the Internet. As a result, CDNs are facing ever-increasing operating costs. Internet Service Providers (ISP) charge CDNs on server traffic, computed using common usage-based charging models, e.g. 95th Percentile charging. We propose Network Cost Aware Request Routing, NetReq, that assign...
In order to ensure a reliable and efficient end-to-end communication among the network nodes in a Mobile Ad Hoc Network (MANET), an appropriate routing protocol is needed. In this paper, we present an extensive simulation-based comparison of three well-known MANET routing protocols (AODV, DSDV and OLSR) evaluating their performance in three real-life scenarios. Considering various performance metrics...
The core idea of cognitive radio technology is to realize the dynamic spectrum allocation and spectrum sharing through spectrum sensing and system learning. This paper sets the throughput and delays as the algorithm design target, puts forward a cognitive radio multi-channel routing algorithm based on a modified PCNN (MPCNN), which fully considered the multi-channel characteristic, through both the...
This paper addresses the NP-hard problem of switching off bundled links whilst retaining the QoS provided to existing applications. We propose a fast heuristic, called Multiple Paths by Shortest Path First (MSPF), and evaluated its performance against two state-of-the-art techniques: GreenTE, and FGH. MSPF improves the energy saving on average by 5% as compared to GreenTE with only 1% CPU time. While...
We present LVRI, a hybrid link-state routing protocol based on exchange of link states in a region of interest. The region of interest (ROI) is defined as a connected component of the network that includes the source, destination nodes and the nodes that act as relays for the data. An ROI is established on-demand and exists as long as there are data to be sent. Each node in the region of interest...
Design and planning Military networks requires complex cost-performance trades involving several functions ranging from subnet creation, topology generation, routing hierarchy design & protocol choice, waveform and frequency planning and MAC choices. In this paper we focus on a subset of the design problems pertaining to routing architecture design with unit task organization (UTO) requirements...
In the past decade, multipath routing has been proposed to provide reliability for mobile ad hoc networks (MANETs). As wireless mesh networks become more and more popular, performance evaluation of different routing algorithms is required in static scenarios. Performance comparison between unipath routing and multipath routing is conducted in this paper. From the simulation results we find that multiple...
Disruptions, high dynamism and no end-to-end communication are some of the Vehicular Delay-Tolerant Networks (VDTNs) main characteristics. This paper describes the implementation of a new VDTN multicast routing protocol which makes use of knowledge about previous encounters to estimate congestion and density and better spread data bundles and limit the number of copies to reduce overhead. After a...
Wireless Multimedia Sensor Networks (WMSNs) is a novel information acquiring and processing technology which is more competent than traditional sensor networks in transferring and processing of huge amount of multimedia information data, such as audio, video, images and so on. It plays critical role in application in civil, military and commercial fields. In this paper, a Non-control sorting method...
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