An Efficient Resource Management Scheme with Guaranteed QoS of Heterogeneous Services in MIMO-OFDM System

Xu, Hao; Tian, Hui; Feng, Yuan; Gao, Youjun; Zhang, Ping

doi:10.1109/wcnc.2008.327

Cited by 14 publications

(8 citation statements)

References 9 publications

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“…Many resource allocation algorithms have been considered that aim to optimize general utility functions. In [7], [8] and [9] packet scheduling is combined with efficient resource allocation algorithms to maximize system throughput in order to guarantee transmission rate and packet delay. More packet level characteristics and QoS performance metrics, such as packet drop probability, jitter and perceived QoS are considered in [10], [11] and [12].…”

Section: Introductionmentioning

confidence: 99%

Fair cross-layer scheme for heterogeneous H.264/AVC video streams over LTE-based broadband systems

Karachontzitis

Dagiuklas

Dounis

2012

2012 8th International Wireless Communications and Mobile Computing Conference (IWCMC)

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This paper presents a novel cross-layer scheme for video transmission of streams with heterogeneous characteristics over LTE-based wireless systems. The proposed cross-layer scheme is organized by taking into account parameters from the Application layer (I-frames and P-frames), MAC Layer (scheduling packets according to their importance) and PhysicalLayer (linear precoding). All these parameters are considered within a novel resource allocation algorithm, which guarantees a weighted rate balancing across users, which is proportional to the bit rate of each video stream. Simulation results show that the proposed cross layer scheme can efficiently support video delivery both in terms of individual video quality and system overall performance.

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Section: Introductionmentioning

confidence: 99%

Fair cross-layer scheme for heterogeneous H.264/AVC video streams over LTE-based broadband systems

Karachontzitis

Dagiuklas

Dounis

2012

2012 8th International Wireless Communications and Mobile Computing Conference (IWCMC)

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“…In the literature, quality-of-service (QoS) [2][3][4][5] and fairness [6][7][8][9] are two important performance measures for the RRA algorithms in the OFDMA/SDMA system. In a modern wireless system with multimedia traffic, the QoS requirements could be considered as bit error rate (BER), the minimum required transmission rate, the maximum packet delay tolerance, and the maximum packet dropping ratio.…”

Section: Introductionmentioning

confidence: 99%

“…To resolve this, heuristic algorithms to increase the total system data rate and guarantee the minimum data rates for each user have been proposed [3]. In addition, a joint resource allocation algorithm to guarantee the maximum allowable delay for delay sensitive services and the minimum data rate requirement for rate sensitive services has been suggested [4]. Other research took account of the BER requirement in the design of RRA scheme [5].…”

Section: Introductionmentioning

confidence: 99%

“…Design of the grouping algorithm is an important issue for SDMA systems [1][2][3][4][5][6]13]. An optimal set of cochannel users has been obtained by using the singular value decomposition (SVD) of the channel vectors [14].…”

Section: Introductionmentioning

confidence: 99%

“…Performance of the LCBS algorithm is analyzed in Sect. 4 Finally, concluding remarks are given in Sect. 5.…”

Section: Introductionmentioning

confidence: 99%

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A low-complexity beamforming-based scheduling to downlink OFDMA/SDMA systems with multimedia traffic

2010

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In this paper, we propose a low-complexity beamforming-based scheduling scheme utilizing a semiorthogonal user selection (SUS) algorithm in downlink orthogonal frequency division multiple access (OFDMA)/ space division multiple access (SDMA) systems to support multimedia traffic. One of the challenges in the multidimensional (space, time, and frequency) radio resource allocation problem for OFDMA/SDMA systems is its high complexity, especially to simultaneously satisfy the quality of services (QoS) requirements for various traffic classes. In the literature, the SUS algorithm is usually applied to the single-class traffic environment, but extending the SUS algorithm to the multimedia environment is not straightforward because of the need to prioritize the real-time (RT) users and the non-real-time (NRT) users. To solve this problem, we propose the concept of urgency value to guarantee the fairness of the NRT as well as the best effort (BE) users while satisfying the delay requirement for the RT users. Simulation results show that, when traffic load is greater than 0.5, the proposed scheduling algorithm can improve the fairness performance by more than 100% over the most recently proposed algorithms.

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Adaptive BU association and resource allocation in integrated PON‐WiMAX networks

Gong¹,

Lin²,

Ho³

et al. 2010

Wireless Communications

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This paper addresses the issues of Base station—User Association and Resources Allocation (BUA‐RA) in OFDM‐TDMA based broadband wireless access (BWA) networks under passive optical networks (PON)‐WiMAX integration. With the powerful coordination capability at the optical line terminal (OLT), a key technology of inter‐cell cooperative transmission (CT) is incorporated in the integrated network architecture, which is called cooperative PON‐WiMAX network (CPWN). To achieve an efficient integration and inter‐cell cooperative transmission in the CPWNs, the BUA‐RA scheme is critical to the Quality of Service (QoS) provisioning for each user. In order to minimize the network resource usage, we provide three new BUA‐RA schemes which first time employ the cooperative transmission in a multi‐cell BWA network. The three schemes are designed for three kinds of subscribers with different moving types, and can be adaptively applied based on the network load. Simulations are conducted to verify the proposed BUA‐RA schemes by comparing with those without cooperative transmission technology. Our results demonstrate the efficiency of our proposed schemes, which are based on mathematical formulations and linearization. Copyright © 2010 John Wiley & Sons, Ltd.

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An Efficient Resource Management Scheme with Guaranteed QoS of Heterogeneous Services in MIMO-OFDM System

Cited by 14 publications

References 9 publications

Fair cross-layer scheme for heterogeneous H.264/AVC video streams over LTE-based broadband systems

Fair cross-layer scheme for heterogeneous H.264/AVC video streams over LTE-based broadband systems

A low-complexity beamforming-based scheduling to downlink OFDMA/SDMA systems with multimedia traffic

Adaptive BU association and resource allocation in integrated PON‐WiMAX networks

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