PHY- and MAC-aware Resource Allocation and Packet Scheduling for Single-Cell OFDMA Packet Networks
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| Title | PHY- and MAC-aware Resource Allocation and Packet Scheduling for Single-Cell OFDMA Packet Networks |
| Authors | |
| Abstract | Radio resource management mechanisms such as PHY-centric Radio Resource Allocation and MAC-centric Packet Scheduling are expected to play a substantial role in the performance of future OFDMA-based wireless networks. Inevitably, efficient resource allocation strategies have to exploit information laying in different OSI layers, allowing for a cross-layer design. In the literature adaptive allocation schemes have been proposed for optimum or suboptimum resource distribution in the frequency domain under static individual user rate constraints. The contribution of this work is twofold: First, we evaluate current allocation schemes under realistic traffic and channel conditions, in order to acquire the upper performance bounds on a real time evolving network. Then we extend them to incorporate MAC-layer information, as well as opportunistic packet scheduling in the time-domain. The key factors that affect the overall system performance in terms of system average throughput and delay are identified, evaluated and discussed. The presented ideas are accompanied with extensive system level Monte-Carlo simulations. |
| Publisher | ACADEMY PUBLISHER |
| Date | 2008-09-01 |
| Source | Journal of Communications Vol 3, No 4 (2008) |
| Rights | Copyright © ACADEMY PUBLISHER - All Rights Reserved.To request permission, please check out URL: http://www.academypublisher.com/copyrightpermission.html. |