In the last few years research on WDM optical packet-switching has mainly concentrated on issues at the single node level. The goal of this paper is to discuss about the problems arising when the focus is moved toward a network-wide scope. In particular, an overview of routing techniques that may be adopted in an optical packet-switched backbone is presented, showing the effects of adaptive mul...

Many new Internet applications require data transmission from a sender to multiple receivers. Unfortunately, the IP Multicast technology used today suffers from scalability problems, especially when used for small and sparse groups. Multicast for Small Conferences aims at providing more efficient support for example to audio conferences. In this work, we present a performance study of the conce...

We propose a limited packet-delivering capacity model for traffic dynamics in scale-free networks. In this model, the total node’s packet-delivering capacity is fixed, and the allocation of packet-delivering capacity on node i is proportional to k i , where ki is the degree of node i and φ is a adjustable parameter. We have applied this model on the shortest path routing strategy as well as the...

In this paper, a discussion of employing Global Positioning System (GPS) and geographic information system (GIS) technologies for packet routing strategies in ad hoc mobile wireless networks is presented. Mobile network architectures and existing packet routing schemes are briefly discussed to illustrate how GPS and GIS techniques can be beneficially employed. Telegeoinformatics, a new discipli...

Virtually all theoretical work on message routing in parallel computers has dwelt on packet routing: messages are conveyed as packets, an entire packet can reside at a node of the network, and a packet is sent from the queue of one node to the queue of another node until its reaches its destination. A trend in multicomputer architecture, however, is to use wormhole routing. In wormhole routing ...

Inspired by the collective foraging behavior of specific ant species, ant-based routing algorithms are able to find optimal or near optimal packet routes for Wireless Mesh Networks. Ant-based algorithms work by deploying artificial pheromone at the network paths, which is then used for future routing decisions. Using this approach, the routing can be optimized according to different criteria li...

The paper proposes an all-optical 1×M router architecture based on pulse-positionmodulation header processing (PPM-HP) scheme for packet routing in all-optical highspeed wavelength division multiplexing (WDM) packet switching network. The router is mainly comprised of all-optical clock extraction, pulse-position-modulation header extraction, continuous-wave (CW) sources, wavelength conversion m...

Internet Engineering Task Force (IETF) working group has standardized the transmission of internet protocol version 6 (IPv6) packets over IEEE 802.15.4 low power wireless personal area network (LoWPAN) as 6LoWPAN protocol. It provides the wireless sensor network (WSN) node with IP communication capabilities by putting an adaptation layer above the 802.15.4 link layer. Different mechanisms perfo...

We describe the adaptive source routing (ASR) method which is a first attempt to combine adaptive routing and source routing methods. In ASR, the adaptivity of each packet is determined at the source processor. Every packet can be routed in a fully adaptive or partially adaptive or non–adaptive manner, all within the same network at the same time. We evaluate and compare performance of the prop...

In this paper we present AntNet, a novel adaptive approach to routing tables learning in packet-switched communications networks. AntNet is inspired by the stigmergy model of communication observed in ant colonies. We present compelling evidence that AntNet, when measuring performance by standard measures such as network throughput and average packet delay, outperforms the current Internet rout...