Analysis of Combined Adaptive Bandwidth Allocation and Admission Control in Wireless Networks
نویسندگان
چکیده
An analytical model is developed for cellular networks with a combined adaptive bandwidth allocation and trafficrestriction mechanism. Instead of focusing only on the bandwidth utilization and forced-termination probability, we derive two important Quality-of-Service (QoS) metrics, degradation ratio and upgrade/degrade frequency. We show numerically that these two metrics must be taken into account in order to support the QoS specified by each client. The effects of system loads and clients’ mobility on system performance are also investigated. Even under the various distributions of mobility, the simulation results are shown to match our analytical results, implying the applicability of our analytical model to more general cases.
منابع مشابه
Adaptive call admission control and resource allocation in multi server wireless/cellular network
The ever increasing demand of the subscribers has put pressure on the capacity of wireless networks around the world. To utilize the scare resources, in the present paper we propose an optimal allocation scheme for an integrated wireless/cellular model with handoff priority and handoff guarantee services. The suggested algorithm optimally allocates the resources in each cell and dynamically adj...
متن کاملAsymptotic Close to Optimal Resource Allocation in Centralized Multi-band Wireless Networks
This paper concerns sub-channel allocation in multi-user wireless networks with a view to increasing the network throughput. It is assumed there are some sub-channels to be equally divided among active links, such that the total sum rate increases, where it is assumed each link is subject to a maximum transmit power constraint. This problem is found to be a non-convex optimization problem and i...
متن کاملThe Role of Regulatory in Price Control and Spectrum Allocation to Competing Wireless Access Networks
With the rapid growth of wireless access networks, various providers offer their services using different technologies such as Wi-Fi, Wimax, 3G, 4G and so on. These networks compete for the scarce wireless spectrum. The spectrum is considered to be a scarce resource moderated by the spectrum allocation regulatory (“regulatory” for short) which is the governance body aiming to maximize the socia...
متن کاملDecentralized Routing and Power Allocation in FDMA Wireless Networks based on H∞ Fuzzy Control Strategy
Simultaneous routing and resource allocation has been considered in wireless networks for its performance improvement. In this paper we propose a cross-layer optimization framework for worst-case queue length minimization in some type of FDMA based wireless networks, in which the the data routing and the power allocation problem are jointly optimized with Fuzzy distributed H∞ control strategy ....
متن کاملJoint routing, scheduling and admission control protocol for WiMAX networks
In WiMax networks the routing and the scheduling are tightly coupled. The routing and scheduling problem for WiMAX networks is different from 802.11 based mesh networks and can be designed and operated separately. Standard problems in wireless systems include Bandwidth allocation and Connection Admission Control (CAC). In this paper we design a joint routing, scheduling and admission control pr...
متن کامل