This paper presents a qualitative performance analysis of a 3G wireless cellular Network.Some key traffic parameters like: Erlang traffic, blocking probability and throughput of the existing system in parts of southern and northern Nigeria were quantitatively analyzed and average blocking probability computed.This is to assist mobile operators to explore an optimized way of improving the networ...

In the micro-cell-based PCS networks, due to the high user mobility, handoffs occur more frequently. Hence, the classical assumptions, such as the exponential assumptions for channel holding time and call inter-arrival time, may not be valid. In this paper, we investigate the call blocking performance for PCS networks using a semi-analytic and semi-simulation approach. We first construct a simu...

Dropping probability of handoff calls and blocking probability of new calls are two important QoS measures for cellular networks. Since the dropping probability of handoff calls is more important, call admission policies are used to maintain the upper bound of dropping probability of handoff calls. The fractional channel policy (FC) is a general call admission policy and includes most prioritiz...

Abstract-In this paper, we analyze the blocking probability of dynamic lightpath establishment in wavelength-routed networks. By using the destination-initiated reservation (DIR) method as a case study, we analyze traffic blocking occurring due to insufficient network capacity as well as traffic blocking caused by outdated information. Simulation results show the proposed models to be highly ac...

We propose a novel optical switching system equipped with shared wavelength converters with electrical buffers. Simulation results show that the proposed system significantly reduces the blocking probability below 10−6 with low buffering delay. We present benefits of the proposed switching system compared with the conventional dedicated wavelength converter scheme in terms of blocking probabili...

We consider cellular mobile systems where in order to limit hando blocking probability, admission control is applied to new call requests and capacity is reserved for future hando attempts. We show that due to this advance reservation the achievable e ciency of the system has an upper bound even if no constraint is speci ed on the blocking probability of new call requests. As a reference case, ...

In this paper, we have proposed a restricted shared protection (RSP) scheme that provides restriction on the sharing of some of the backup light paths to increase the reliability of the protection in optical network. From the reliability theory, we have proved that the reliability in RSP network is more than that of existing shared protection (SP) network. As failure rate increases, the reliabi...

In this paper the effect of dynamic wavelength allocation (DWA) scheme implementation to the OBS node performance is investigated. We have developed the mathematical model of an OBS node in order to evaluate the burst blocking probability. It is proposed to allocate a part of total wavelength capacity to be used by deflected bursts only. The results obtained from the model show that if the numb...

This paper proposes a wavelength converter placement method such that the same network will yield low connection blocking probability even when the alternate routing algorithm is replaced by a different one. Since the objective of the alternate routing algorithms used in the networks is to minimize blocking probability, the optimal traffic pattern which minimize the blocked traffic intensity is...

We introduce a traffic model for circuit-switched all-optical networks which we then use to calculate the blocking probability along a path for networks with and without wavelength changers. We investigate the effects of path length, switch size, and interference length (the expected number of hops shared by two sessions which share at least one hop) on blocking probability and the ability of w...