The time-varying nature of the parameters influencing the Quality of service (QoS) of real-time applications means the Call Admission Control (CAC) in LTE networks has to deal with some degree of uncertainty. The existing approaches fail to properly manage this uncertainty. A model is proposed to effectively manage real-time traffic via the deployment of a Type-1 Fuzzy Logic Controllers (FLCs)....

Common Radio Resource Management (CRRM) is required to support the provision of Quality of Service (QoS) and the efficient utilization of radio resources in coexisting different Radio Access Technologies (RATs). In this paper, an Adaptive-Terminal Modality-Based Joint Call Admission Control (ATJCAC) algorithm is proposed to enhance connection-level QoS and reduce call blocking/dropping probabil...

A distributed call admission control scheme is proposed for non-uniform traac in wireless networks. The proposed scheme uses the collective movement information of mobile terminals to estimate the handoo probabilities. Mobile terminal handoo history data is used as movement information. The performance of the scheme was evaluated by computer simulation. Introduction: Wireless network systems ar...

We consider threshold-based admission control policies for traffic in fixed-route circuit-switched networks, and develop a scheme for adjusting the threshold parameters online so that, as operating conditions in the network change, the thresholds “adapt” with the objective of minimizing a weighted sum of call blocking probabilities. Instrumental in this scheme is an algorithm for estimating onl...

This paper introduces a distributed call admission controller for ad hod networks. The call admission controller is based on service curve provisioning. Service curve reflects the status of network and depends on the number of active nodes, their activity index, and the back-off procedure used for contention resolution. The service curve along with the aggregated traffic function can be used to...

Two important Quality-of-Service (QoS) measures for current cellular networks are the fractions of new and handoff “calls” that are blocked due to unavailability of “channels” (radio and/or computing resources). Based on these QoS measures, we derive optimal admission control policies for three problems: minimizing a linear objective function of the new and handoff call blocking probabilities (...

The coexistence of different Radio Access Technologies (RATs) requires a need for Common Radio Resource Management (CRRM) to support the provision of Quality of Service (QoS) and the efficient utilization of radio resources. The provision of QoS is an important and challenging issue in the design of integrated services packet networks. Call admission control (CAC) is an integral part of the pro...

Call admission control (CAC) plays a significant role in providing the desired Quality of Service (QoS) in wireless networks. In this paper, we present some new call admission control schemes: mobility-based call admission schemes and new call bounding schemes, for wireless mobile networks providing services to multiple classes of mobile users ( i.e. pedestrians and vehicular travelers). Since ...

WCDMA is interference limited multiple access technique and mainly used for transmission of high data rate in the 3rd generation cellular and mobile networks. In conventional Call Admission Control (CAC) techniques, when a new call admit in the system to get admission, it checks whether the call is admitted or not on the basis of signal to interference ratio (SIR) and transmission power in the ...

The random access MAC protocol of WLANs is a key aspect in the actual rapid deployment of WLANs. However, the lack of a hard centralized control of the transmission resources, complicating an efficient implementation of QoS mechanisms without losing the inherent advantages of the distributed access scheme. To solve this difficulties, the EDCA IEEE 802.11e proposal has been released but, critica...