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In this paper we develop an optimized control strategy for the connection bandwidth maximization over a time varying wireless channel, by jointly controlling the adaptive source rate and the client/playout buffering policy with constraints on the maximum connection bandwidth allowed at the Application (APP) layer, the queue-capacities available at the DataLink (DL) layer and the average and peak transmit...
Next generation networks (NGNs) are evolving to accommodate a variety of new services and traffic types, while allowing a user to roam within the service area of the network, or between networks without deteriorating a predetermined quality of service (QoS). In order to establish a proper background for "end-to-end" QoS support, we have identified the key adaptation issues and proposed the...
The increasing demand of real-time multimedia applications in wireless environment requires stringent quality of service (QoS) provisioning to the mobile hosts (MH). The scenario becomes more complex during group communication from single source to multiple destinations. Fulfilling users demand with respect to delay, jitter, available bandwidth, packet loss rate and cost associated with the communication...
IEEE P1900.4 is an emerging standard for optimized radio resource utilization where cognitive radio technologies are used for efficient spectrum utilization. In this paper, we design and implement a cognitive wireless network system based on open documents of IEEE P1900.4, and evaluate its performance using UDP streaming and HTTP download. Our experiments show interesting results that total network...
Equivalent bandwidth (EqB) is defined as the minimum service rate to be provided to a traffic buffer to guarantee a certain degree of quality of service (QoS) in terms of objective parameters (packet loss, delay, jitter). EqB techniques are usually obtained analytically for homogeneous traffic trunks, with respect to a single QoS constraint. Modern network solutions often imply the aggregation of...
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