Wireless Mesh Network is a promising technology with many challenges yet to be addressed. Novel and efficient algorithms need to be developed for routing and admission control with the objective to increase the acceptance ratio of new calls without affecting the Quality of Service (QoS) of the existing calls and to maintain the QoS level provided for the mobile calls. In this paper, a novel Mar...

This paper presents a two-layer cellular architecture which optimizes the handoff blocking probability performance of Priority Subscribers (PS) in a congested urban area. The lower layer of the proposed architecture is based on a microcellular solution for Normal Subscribers (NS) while the higher layer is based on a High Altitude Stratospheric Platform (HASP) overlay solution for absorbing the ...

In this paper, we introduce a TDMA channel assignment scheme suitable for personal communication services (PCS) networks. This scheme, called Handoff TDMA (H-TDMA), assumes three type of traffic: new voice calls, handoff voice calls and data packets, all competing for a finite number of channels. In the present scheme, priority is given to handoff voice calls over data calls, while a number of ...

We propose dynamic channel allocation schemes which employ techniques such as channel reservation, service priority and queueing strategies (with or without threshold control) etc. Using these techniques allows system designers to differentiate Quality of Service (QoS) requirements (e.g., new call blocking/handoff forced termination probability and delay) required by different types of service....

In mobile multimedia communication systems, the channel allocation schemes and computational model are becoming the topic of research interest. The computational model gives the faster processing time based on learning algorithm and neural network models. In wireless network the limited bandwidth is an issue of serious concern. However for the better utilization of available resources in a netw...

In CDMA mobile cellular systems, wireless quality is improved by soft handoff techniques. However, it requires to hold multiple channels of cells, which is likely to increase call blocking at wired channels. It is therefore necessary to consider the entire system including the wired and wireless portions of systems for investigating an effectiveness of the soft handoff. In this paper, we also c...

In this paper, we evaluate a Call Admission Control (CAC) scheme suitable for W-CDMA networks accommodating multiple service-classes. In such networks, the distinction between new and handoff traffic is very important. A simple CAC scheme can distinguish calls between the two traffic types by setting different thresholds for call admission. This simple CAC scheme is evaluated in respect of bloc...

Abstract — The demand for wireless mobile networks led to an increase in handoff calls. Optimum utilization of the channel should be planned as it is the limited resource for any mobile network. Poorly designed handoff schemes lead to a drastic decrease in quality of service. The study gives an analytical framework of handoff procedure when some channels are purely reserved for handoff calls. I...

This paper studies the behavior of performance evaluation for a personal communication services (PCS) network, in which the calls' arrival process may depend on the number of calls in the target cells. Each cell of the PCS network consists of a ®nite channel and a buffer (with ®nite or in®nite size) for handoff calls. The handoff calls having to wait in the buffer for further communication may ...

In multimedia cellular network, a Mobile Host (MH) requests multimedia services and may experience handoffs to several cells. When the target cell cannot provide adequate bandwidth for a service, instead of directly dropping a request, the MH is put into the handoff queue and hopefully the request bandwidth can be satisfied by later released bandwidth. Obviously, it is important to properly ass...