In this paper we consider the notion of “reload costs” in network design. Reload costs occur in telecommunication networks using diverse technologies. For example, one of the products offered by commercial satellite service providers and their partners is a virtual private network (VPN) that can offer voice, video and data connectivity between all of the geographically dispersed locations of la...

multicast routing is one of the most important services in multi radio multi channel (mrmc) wireless mesh networks (wmn). multicast routing performance in wmns could be improved by choosing the best routes and the routes that have minimum interference to reach multicast receivers. in this paper we want to address the multicast routing problem for a given channel assignment in wmns. the channels...

Abstract- Efficient message delivery in city environment is required to ensure driver’s safety and passenger’s comfortability. In cities of developed nations, routing of data in vehicular Ad hoc Network (VANET) faces many challenges such as radio obstacles, mobility constraints and uneven nodes distribution. These factors primarily makes communication between vehicles complex. To overcome and t...

Routing in Wireless Sensor Networks (WSNs) is a very challenging task due to the large number of nodes, their mobility and lack of proper infrastructure. Since the sensors are battery powered devices, energy efficiency is considered as one of the main factors in designing routing protocols in WSNs. Most of energy-aware routing protocols are mere energy savers that attempt to decrease the energy...

today, one of the new technologies in the modern era is vehicular ad-hoc network which has takenenormous attention in the recent years. because of rapid topology changing and frequent disconnectionmakes it difficult to design an efficient routing protocol for routing data between vehicles, called v2v orvehicle to vehicle communication and vehicle to roadside infrastructure, called v2i. designin...

We study the best OSPF style routing problem in telecommunication networks, where weight management is employed to get a routing configuration with the minimum oblivious ratio. We consider polyhedral demand uncertainty: the set of traffic matrices is a polyhedron defined by a set of linear constraints, and the performance of each routing is assessed on its worst case congestion ratio for any fe...

The introduction of SONET technology opens o p portunities for survivable network architectures, such as selfhealing rings, which can improve telecommunication reliability. This paper presents an algorithm for routing fiber around a ring in a network, when the network nodes, links, connectivity, and which offices are to be placed on that ring together are known. The algorithm aids automated sur...

In the last years, the power consumption of telecommunication networks has attracted the attention of both researchers and field experts in order to contain the associated energy bills and reduce their ecological impact. Many of the proposed solutions have been focused exclusively on the reduction of the power consumption, without adequately considering more traditional network engineering obje...

Static nodes, e.g. houses, educational institutions etc, can comprise ad-hoc networks using off-the-self wireless technologies with a view to bypass expensive telecommunication solutions. A suburban adhoc network (SAHN) aims to provide such an inexpensive broadband networking alternative for communities of cooperating users using wireless medium. There exists a plethora of efficient routing sol...