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Resource reservation is a key management function in future wireless networks, particularly to provide high-end multimedia applications to mobile users with quality of service (QoS) guarantees and to optimize the overall system resource utilization. In prediction based resource reservation, the radio resource is reserved from an a priori estimation of the future traffic load. In this paper, we have...
Providing guaranteed quality-of-service (QoS) for resource-hungry multimedia applications over wireless fading channels is challenging. Traditional layered architecture fails miserably in providing the QoS requirement of high throughput, low latency demand of these kinds of applications in wireless mobile networks. Cross-layer design approaches are critical for efficient utilization of the scarce...
In traditional communication networks, the open systems interconnection (OSI) layer architecture has been widely adopted, and the performance optimization is conducted largely within each individual protocol layer. Although the layered structure is still of great importance for next generation wireless networks, it is known that the conventional OSI architecture may not work well in many wireless...
In order to guarantee quality of service (QoS) of existing users and to optimize the overall system resource utilization, call admission control (CAC) along with efficient resource reservation scheme plays an important role in next generation wireless networks like WiMax. In prediction based or proactive CAC scheme, new incoming call is admitted or denied based on some predictive or analytical assessment...
In this paper, an efficient scheme to optimize resource allocation for dynamic OFDMA based WiMAX systems is presented, which provides priority estimated resource allocation with individual QoS provisioning. Our proposed scheme dynamically assigns OFDMA resources to the users to optimize the overall system performance in heterogeneous traffic and diverse QoS based WiMAX systems. To achieve this goal,...
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