Cross-Layer Design for Dynamic Resource Allocation in Wireless Networks
August 2004
John Y. Kim, The MITRE Corporation
Ali Saidi, The MITRE Corporation
Randall J. Landry, The MITRE Corporation
ABSTRACT
In this paper, a novel analytical cross-layer design
framework for dynamic resource management of wireless
networks is proposed. First, dynamic bandwidth and time
resource allocation policies for a single-user under fading
channels that maximize capacity are derived. The analysis is then
extended to multi-user environments, where the resource
allocation is jointly optimized across both physical and data link
layers. A closed-form expression of a QoS measure, mean delay
in this case, is derived as a function of layer 2 traffic, multiple
access contention from other users, and allocated data-rates at
the physical layer. This mean delay expression is then used to
efficiently allocate physical layer resources. We also study the
effects of various contention mitigation policies on network
capacity and average latency under optimum resource allocation
strategies.
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Additional Search Keywords
cross-layer design (CLD), dynamic bandwidth
allocation (DBA), dynamic time allocation (DTA), information
theory, quality of service (QoS), queing theory, resource
management
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