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Failing to make use of multi-path advantages in data center networks (DCNs) has confined accessible resources and increased the possibility of congestion. In this paper, we have presented a new algorithm for traffic engineering (TE) in a modular mode. In the proposed algorithm, the less loaded paths for conduction of current are selected with regard to the present conditions as soon as a current is...
Opportunistic routing is the major routing strategy for intermittently connected networks (ICNs) that are characterized by frequent link disruptions. These disruptions limit the formation and stability of continuous end-to-end paths between any arbitrary source-destination node pair. This paper proposes a novel opportunistic routing/forwarding protocol, Nodes Density Adaptive Opportunistic (NDAO)...
The protocol independent multicast - sparse mode (PIM-SM) is a multicast routing protocol that uses one center (which we refer to as the rendezvous point ??RP??) for all transmitters in a multicast group. It builds source-specific trees to the transmitters whose data rates exceed a defined threshold. Investigations are done to improve and provide an efficient mechanism for switching between the shared-based...
Opportunistic routing (OR) schemes, such as ExOR, have been shown to provide significant throughput gains over traditional best-path routing schemes for wireless networks. Though the performance of OR schemes depend on the bit-rate, they currently use a fixed rate for transmitting packets. While several schemes have been proposed for selecting bit-rate for unicast transmission to a single receiver,...
In this paper, we introduce and evaluate ScaleMesh, a scalable miniaturized dual-radio wireless mesh testbed based on IEEE 802.11b/g technology- ScaleMesh can emulate large-scale mesh networks within a miniaturized experimentation area by adaptively shrinking the transmission range of mesh nodes by means of variable signal attenuators. To this end, we derive a theoretical formula for approximating...
Wireless network coding has been shown to reduce the number of transmissions by exploiting the broadcast nature of the wireless medium. Multiple packets may be encoded into a single packet when their respective next hops have enough information to decode them. Previous research has shown that packets belonging to different flows may be encoded (interflow coding) when they are passing through a common...
This paper presents a distributed fermat-point range estimation strategy, which is important in the moving sensor localization applications. The fermat-point is defined as a point which minimizes the sum of distances from three sensors inside a triangle. This point is indeed at the trianglepsilas center of gravity. We solve the problems of large errors and poor performance in the bounding box algorithm...
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