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In random broadcasting or dynamic broadcast, source packets that have to be broadcast to all the other nodes are generated at each node of a network or a parallel/distributed system at random instances or in an uncoordinated manner. In this paper, we propose a priority-based routing scheme, to be referred to as prioritized dominating-set broadcasting (PDB), for random broadcasting in k-ary n-cubes...
IEEE 802.11 WLANs are becoming more and more popular in homes and urban areas. As opposed to traditional WLANs, the access points (APs) in these networks are often deployed by network non-specialists in an uncoordinated manner, leading to unplanned topology, interference and unsatisfactory throughput performance. We consider in this paper a distributed channel assignment algorithm for uncoordinated...
The spectrum-agile cognitive radio has been developed to significantly increase spectrum utilization and relieve the spectrum exhaustion problem, by enabling secondary users to dynamically access the licensed spectrum bands. As such cognitive radio will be a key feature of future wireless technologies. In this paper, we propose an architecture for cognitive radio network (CRN). Our architecture uses...
This paper considers the channel-assignment and scheduling in wireless mesh networks that employ multiple radios and multiple channels. In contrast to the various algorithms available in the literature, we explicitly model the delay overhead that is incurred during channel switching, and use that delay in the design of algorithms. We prove that the well known Greedy Maximal Scheduling (GMS) algorithm...
A Combined Input and Crosspoint Queueing (CICQ) switch is a switch that has both buffers at the crosspoints of the switch fabric and buffers at the inputs. Inspired by the fixed frame based algorithm for an input-buffered switch and the smooth scheduling algorithm for a CICQ switch, in this paper we propose using a dynamic frame sizing algorithm for a CICQ switch. It is formally shown that such a...
Application server clusters are often used to service high-throughput web applications. In order to host more than a single application, an organisation will usually procure a separate cluster for each application. Over time the utilisation of the clusters will vary, leading to variation in the response times experienced by users of the applications. Techniques that statically assign servers to each...
Cisco systems' application oriented networking (AON) is an important network element towards building next generation service oriented network. AON processes application- level content and moves far beyond a conventional content-aware Web switch. It creates a novel content delivery platform and allows more sophisticated message-level load balancing mechanisms to be deployed in a switch/router in front...
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