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Link-state routing with hop-by-hop forwarding is widely used in the Internet today. The current versions of these protocols, like OSPF, split traffic evenly over shortest paths based on link weights. However, optimizing the link weights for OSPF to the offered traffic is an NP-hard problem, and even the best setting of the weights can deviate significantly from an optimal distribution of the traffic...
The next generation of wireless sensor networks will integrate communication systems beyond the third generation paradigm. As a result of this integration, the new communication systems will be fed by the sensor networks with information gathered from the environment, achieving context awareness. To reach the necessary end-to-end connectivity between all-IP networks and sensor networks, the IETF 6LoWPAN...
Many peer-to-peer systems have been deployed on a large scale to provide users with "live streaming", that is Internet-delivered real-time multimedia content, much as the traditional television service. All such systems are organized in an unstructured manner, with epidemic-style information exchanges: users decide who to interact with in an adaptive manner, on the basis of past experience,...
The automatically switched optical networks (ASONs) and the generalized multi protocol label switching (GMPLS) control plane are envisaged to play an important role in the next generation Internet. ASON/GMPLS networks enable the multilayer traffic engineering (MTE) paradigm which facilitates the interaction between the IP and the dense wavelength division multiplexing (DWDM) layers. In such dynamic...
The Automatically Switched Optical Networks (ASONs) and the Generalized Multi Protocol Label Switching (GMPLS) control plane are envisaged to play an important role in the next generation Internet. They provide optical networks with intelligence and automation and they enable the Multilayer Traffic Engineering (MTE) paradigm which facilitates the IP/optical adaptive integrated routing. This paper...
In a broadcasting problem, a message is sent from a source to all the other nodes in the network. Blind flooding is a classical mechanism for broadcasting, where each node retransmits received message to all its neighbors. Despite its important advantages, an increase in the number of requests or the size of the routing area produces communication overheads that limit the scalability of blind flooding,...
This paper describes a new path computation model in Multi-protocol Label Switching (MPLS) and Generalized MPLS (GMPLS) networks. It introduces a path computation element (PCE), which is functionally separate from label switching routers (LSRs). The Path Computation Element (PCE) is an entity that is capable of computing a network path or route based on a network graph, and applying computational...
In this paper, we propose an adaptive pacing scheme at the link layer for IEEE 802.11 based multihop wireless networks. Our objective is to improve the performance of higher layer protocols without any modifications to them. Our adaptive pacing scheme estimates the four-hop transmission delay in the network path without incurring any additional overheads, and accordingly paces the packets to reduce...
Backbone wireless mesh networks (BWMNs) are decentralized, relatively inexpensive, and scalable networks providing broadband Internet connectivity to the metropolitan areas. In a BWMN, all traffics will flow in or out the BWMN through a gateway. However, the cost of setting up a gateway may be high such that using minimal number of gateways is desirable. In this paper, we propose the pre-defined gateway...
Content delivery network (CDN) plays an important role in today's Web services. More and more content providers use CDNs to lower the server overhead, reduce client perceived latency and decrease network traffic. More research papers have been published in recent years addressing CDN system performance issues. However, most of them are concentrated on server placement policy, content distribution...
Notice of Violation of IEEE Publication PrinciplesAfter careful and considered review of the content and authorship of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE's Publication Principles.This paper contains significant duplication of original text from the paper cited below. The original text was copied without attribution (including appropriate...
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