In this paper we study how a reduction of consumer switching costs may affect market competition in the wireless telecommunication industry. The reduction of switching costs can be achieved through the implementation of a regulatory policy called Wireless Number Portability (WNP) that allows consumers to retain the same phone numbers when they switch service providers. By r educing consumers' s...

Circuit switching, suited to providing real-time services due to the low and fixed switching delay, is not cost effective for building integrated services networks because is based on static allocation of resources which is not efficient with bursty data traffic. Moreover it cannot handle flow that are not integer multiple of 64 Kb/s, preventing the usage of low bit rate codecs. This work explo...

In recent years, with the rapid exhaustion of the capacity in wide area networks led by Internet and multimedia applications, demand for high bandwidth has been growing at a very fast pace. Wavelength-division multiplexing (WDM) is a promising technique for utilizing the huge available bandwidth in optical fibers. In this paper, we consider efficient designs of nonblocking WDM permutation switc...

Circuit switching, suited to providing real-time services due to the low and fixed switching delay, is not cost effective for building integrated services networks because is based on static allocation of resources which is not efficient with bursty data traffic. Moreover it cannot handle flow that are not integer multiple of 64 Kb/s, preventing the usage of low bit rate codecs. This work explo...

Network devices, such as switches and routers, process data at rates of terabits per second, forwarding billions of network packets per second. Recently, such devices’ switching chips have been enhanced to support new levels of programmability [3]. Leveraging these new capabilities, a switching chip’s packets classification and modification tasks can now be adapted to implement custom functions...

216 Abstract—Authentication of mobile subscriber is a challenge of future researchers due to increasing security threats and attacks with the enhanced population of wireless traffic. 3G mobile communication system has been developed to speed up the data communication. In general the authentication technique in 2G mobile communication is solely dependent on checking the authenticity of MS (Mobil...

We study a homoclinic network associated to a non-resonant hyperbolic bifocus. It is proved that combining rotation with a non-degeneracy condition concerning the intersection of the twodimensional invariant manifolds of the equilibrium, switching behaviour is created: close to the network, there are trajectories that visit the neighbourhood of the bifocus following connections in any prescribe...

We propose a novel dynamic hierarchical optical path network architecture that achieves efficient optical fast circuit switching. In order to complete wavelength path setup/teardown efficiently, the proposed network adaptively manages waveband paths and bundles of optical paths, which provide virtual mesh connectivity between node pairs for wavelength paths. Numerical experiments show that oper...

This paper focuses on designing a Fast Packet ATM switch suitable for B-ISDN. It is a Banyan network using cyclic interconnection among switching elements of the same stage for deflection routing. The proposed routing is as simple as that of the generic Banyan network, and all the switching elements (SE’s) have a uniform structure. To design the proposed network and to develop its self-routing ...

Recent years have demonstrated the limited scalability of electronic switching to realize transport networks. In response, all-optical switching has been identified as a candidate solution to enable high-capacity networking in the future. One of the fundamental challenges is to efficiently support a wide range of traffic patterns, and thus emerges the need for equipment that is both practical a...