Cross-layer adaptive resource management for wireless packet networks with OFDM signaling

Ying Jun Zhang, Khaled Letaief

Research output: Contribution to journalArticle

50 Citations (Scopus)

Abstract

Adaptive resource management has become a key technique for the next-generation wireless systems to provide desired services at appropriate QoS. Most of the current resource management algorithms are confined to a single layer of the network protocol stack, which leads to an inferior performance. In this paper, we propose a joint MAC-PHY layer resource management algorithm for wireless OFDM networks. The algorithm aims to maximize the system power efficiency given that the fulfillment of the QoS as well as the fairness is guaranteed. We formulate the integrated design of packet scheduling, subcarrier allocation, and power control into a constrained optimization problem. The formulation defines the interaction and cooperation between different components of the algorithm as well as the information exchange between the PHY and MAC layers. A reduced-complexity scheme that solves the optimization problem in polynomial time is then developed based on the special structure of the problem. Analytical and numerical results will show that the proposed algorithm is able to guarantee the same degree of QoS and fairness as the fair queueing systems do in wired channels. Meanwhile, the power efficiency and system performance are significantly improved compared to traditional systems where resources are allocated based on a strict layering architecture.

Original languageEnglish
Pages (from-to)3244-3254
Number of pages11
JournalIEEE Transactions on Wireless Communications
Volume5
Issue number11
DOIs
Publication statusPublished - Nov 2006
Externally publishedYes

Fingerprint

Cross-layer
Packet networks
Resource Management
Orthogonal Frequency Division multiplexing (OFDM)
Orthogonal frequency division multiplexing
Quality of service
Fairness
Subcarrier Allocation
Packet Scheduling
Network Protocols
Constrained optimization
Power Control
Queueing System
Constrained Optimization Problem
Power control
Power System
System Performance
Polynomial time
Maximise
Scheduling

Keywords

  • Adaptive resource allocation
  • Cross layer design
  • OFDM
  • Packet scheduling

ASJC Scopus subject areas

  • Engineering(all)
  • Computer Networks and Communications

Cite this

Cross-layer adaptive resource management for wireless packet networks with OFDM signaling. / Zhang, Ying Jun; Letaief, Khaled.

In: IEEE Transactions on Wireless Communications, Vol. 5, No. 11, 11.2006, p. 3244-3254.

Research output: Contribution to journalArticle

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