Cross-layer resource allocation for QoS guarantee with finite queue constraint in multirate OFDMA wireless networks

Acta Metallurgica Sinica(English letters) ›› 2008, Vol. 15 ›› Issue (3): 87-94.doi:

Cross-layer resource allocation for QoS guarantee with finite queue constraint in multirate OFDMA wireless networks

徐海博田辉冯媛

Key Laboratory of Universal Wireless Communications, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China

收稿日期:2007-11-13 修回日期:1900-01-01 出版日期:2008-09-30
通讯作者: 徐海博

Cross-layer resource allocation for QoS guarantee with finite queue constraint in multirate OFDMA wireless networks

XU Hai-bo, TIAN Hui, FENG Yuan

Key Laboratory of Universal Wireless Communications, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China

Received:2007-11-13 Revised:1900-01-01 Online:2008-09-30

摘要/Abstract

摘要：

Efficient radio resource allocation is essential to provide quality of service (QoS) for wireless networks. In this article, a cross-layer resource allocation scheme is presented with the objective of maximizing system throughput, while providing guaranteed QoS for users. With the assumption of a finite queue for arrival packets, the proposed scheme dynamically allocates radio resources based on user’s channel characteristic and QoS metrics derived from a queuing model, which considers a packet arrival process modeled by discrete Markov modulated Poisson process (dMMPP), and a multirate transmission scheme achieved through adaptive modulation. The cross-layer resource allocation scheme operates over two steps. Specifically, the amount of bandwidth allocated to each user is first derived from a queuing analytical model, and then the algorithm finds the best subcarrier assignment for users. Simulation results show that the proposed scheme maximizes the system throughput while guaranteeing QoS for users.

关键词:

cross-layer;resource;allocation,;finite;queue,;dMMPP,;QoS,;orthogonal;frequency;division;multiple;access;(OFDMA);

Abstract:

Key words:

cross-layer resource allocation;finite queue;dMMPP;QoS;orthogonal frequency division multiple access (OFDMA)

XU Hai-bo, TIAN Hui, FENG Yuan. Cross-layer resource allocation for QoS guarantee with finite queue constraint in multirate OFDMA wireless networks[J]. Acta Metallurgica Sinica(English letters), 2008, 15(3): 87-94.

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Cross-layer resource allocation for QoS guarantee with finite queue constraint in multirate OFDMA wireless networks

Cross-layer resource allocation for QoS guarantee with finite queue constraint in multirate OFDMA wireless networks

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