Recent years in the field of mobile communications have brought two significant requirements – seamless service delivery and Quality of Service provisioning. Seamless mobility goes hand in hand with Mobile IPv6 protocol and various handover schemes of this protocol are trying to solve the QoS issue. In this paper we are presenting a method for evaluation of the Layer 3 handover schemes from the...

Recently, a two-phase handoff protocol has been proposed to support inter-switch handoff in wireless ATM networks. It employs path extension for each inter-switch handoff, followed by path optimization if necessary. In this paper, we propose a number of path optimization initiation schemes to facilitate the two-phase handoff protocol. The design objective is to determine the time to invoke path...

We develop a protocol for optimizing dynamic behavior of a network of simple electronic components, such as a sensor network, an ad hoc network of mobile devices, or a network of communication switches. This protocol requires only local communication and simple computations which are distributed among devices. The protocol is scalable to large networks. As a motivating example, we discuss a pro...

With increasing resource constraints, optimization is necessary to make the best use of scarce resources. Given the ubiquitous connectivity and availability of information, collaborative optimization problems can be formulated by different parties to jointly optimize their operations. However, this cannot usually be done without restraint since privacy/security concerns often inhibit the comple...

The phenomenon of network resource-constrained often appears in wireless sensor network (WSN) because of nodes with energy-limited, so it becomes a research topic to study on high-performance routing protocol in wireless sensor network. In accordance with the characteristic of quantum particle swarm optimization (QPSO), a novel clustering routing protocol with QPSO algorithm is proposed based o...

The optimal selection of parameters in practical quantum key distribution can greatly improve the generation rate and maximum transmission distance system. Owing to high cost global search algorithm, local algorithm is widely used. However, there are two shortcomings algorithm. One that solution obtained not always solution, other effectiveness dependent on choice initial value. This paper uses...