A Two-Dimensional Markov Model for Cross-Layer Design in AMC/ARQ-Based Wireless Networks

Ramis, Jaume; Carrasco, Loren; Femenias, Guillem

doi:10.1109/glocom.2008.ecp.888

Cited by 6 publications

(13 citation statements)

References 23 publications

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“…As shown in [9], depending on the channel conditions and the QoS requirements of different users, some of these possible TMs may be deemed useless, and thus, only a set of Mu useful TMs (M = {0…, Mu−1}) will be available to the AMC scheme for user u.…”

Section: Markov Model and Dynamic Txop Schedulermentioning

confidence: 99%

“…Literature review indicates that much work has focused on cross-layer designs by combining the AMC schemes with HARQ or ARQ error control protocols [9][10][11] while limited researches have addressed the multiuser scheduling at the MAC sub-layer [12÷15]. In [15] the authors presented an opportunistic scheduling scheme to improve the delay performance of secondary users with bursty traffic in cognitive radio (CR) systems.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the lack of an efficient configuration of the TXOP duration may result in wasteful bandwidth sharing a slot time, resulting in delay, jitter and throughput reduction of the system. To solve this issue the dynamic cross-layer design method has been proposed to enhance the accuracy of TXOP duration estimation [9].…”

Section: Introductionmentioning

confidence: 99%

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A novel cross-layer design for dynamic TXOP in IEEE802.11e

2015

Teh. vjesn.

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Original scientific paper This paper proposes a novel framework for the cross-layer design and optimization of wireless networks combining adaptive modulation and coding (AMC) at the physical (PHY) layer by means of automatic repeat request and channel-aware multiuser scheduling protocols at the data link control (DLC) layer. The proposed framework is based on the use of two-dimensional discrete time Markov chains (DTMCs) jointly modelling the AMC scheme and the amplitude contention window (CW). A new algorithm for dynamic configuration of the polled transmission opportunity (TXOP) in multi-rate IEEE 802.11e network is presented and its performance is analysed and compared with default configuration. The numerical simulation results have indicated the high efficacy of the proposed method in maximizing the average throughput of the system. Keywords: Adaptive Modulation and Coding (AMC); cross-layer design; Hybrid Automatic Repeat Request (HARQ); Markov modelsNovi cross-layer projekt za dinamički TXOP u IEEE802.11eIzvorni znanstveni članak U radu se predlaže novi okvir za konstrukciju s poprečnim slojevima (cross-layer design) i optimizaciju bežičnih mreža kombiniranjem adaptivne modulacije i kodiranja (AMC) na fizičkom sloju (PHY) pomoću automatskog zahtjeva za ponavljanjem (automatic repeat request) i channel-aware multiuser scheduling protokola kod sloja za reguliranje povezivanja podataka -data link control (DLC). Predloženo se načelo zasniva na primjeni dvodimenzijskih Markovljevih lanaca diskretnog vremena -two-dimensional discrete time Markov chains (DTMCs) koji skupa modeliraju AMC shemu i amplitude contention window (CW). Predstavljen je novi algoritam za dinamičku konfiguraciju ispitivane mogućnosti prijenosa -polled transmission opportunity (TXOP) u IEEE 802.11e mreži s više brzina te se analizira njegova učinkovitost i uspoređuje sa zadanom konfiguracijom. Rezultati numeričke simulacije pokazali su visoku učinkovitost predložene metode u maksimiranju prosječnog protoka sustava. Ključne riječi: adaptivna modulacija i kodiranje (AMC); cross-layer konstrukcija; hibridni automatski zahtjev za ponavljanjem(HARQ); Markovljevi modeli

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Section: Markov Model and Dynamic Txop Schedulermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A novel cross-layer design for dynamic TXOP in IEEE802.11e

2015

Teh. vjesn.

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“…Consequently, cross-layer designs able to jointly optimize the scheduling, ARQ, and AMC functions should be devised. Although many recent works focus on cross-layer designs that combine AMC schemes with ARQ error control protocols (see, e.g., [1][2][3][4][5][6][7][8][9][10][11][12]), proposals also incorporating the multiuser scheduling process at the media access control (MAC) sublayer are much less common (see, e.g., [13][14][15]). Liu et al in [15] presented an opportunistic scheduling scheme to improve the delay performance of secondary users with bursty traffic in cognitive radio (CR) systems.…”

Section: Introductionmentioning

confidence: 99%

Channel-aware MAC performance of AMC-ARQ-based wireless systems

Carrasco

Femenias

Ramis

2013

J Wireless Com Network

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This paper proposes a novel framework for the cross-layer design and optimization of wireless networks combining adaptive modulation and coding (AMC) at the physical (PHY) layer with automatic repeat request and channel-aware multiuser scheduling protocols at the data link control (DLC) layer. The proposed framework is based on the use of first-order two-dimensional discrete time Markov chains (DTMCs) jointly modeling the AMC scheme and the amplitude and rate of change of the wireless channel fading envelope. The behavior of the scheduler is embedded into the multidimensional PHY layer Markov model through the use of a service-vacation process. Using this PHY-media access control (MAC) Markov model, the quality of service performance at the DLC layer is discussed considering two different approaches. The first one relies on an analytical framework that is based on the multidimensional DTMC jointly describing the statistical behavior of the arrival process, the queuing system, and the PHY layer. The second one is rooted in the use of the effective bandwidth theory to model the packet arrival process and the effective capacity theory to model the PHY/MAC behavior. Both the DTMC-based and effective bandwidth/capacity-based approaches are analyzed and compared in a cross-layer design aiming at maximizing the average throughput of the system where constraints on the maximum tolerable average packet loss and delay are to be fulfilled.

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“…However, both designs are not applicable for CDMA systems and they assume a Poisson traffic model which is not suitable for multimedia traffic. In [19], a twodimensional Markov channel model and an AMC threshold searching algorithm are proposed for a system employing AMC and automatic repeat requests. Through queuing analysis, the link layer packet arrival rate and the physical layer tolerable packet error rate are determined to provide specific FLR and delay.…”

Section: Introductionmentioning

confidence: 99%

Cross-Layer Optimization for Multimedia Transport over Multicode CDMA Networks

Chen

Chan

Leung

2011

IEEE Trans. on Mobile Comput.

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Abstract-Most previous work on code division multiple access (CDMA) considers the bit error ratio (BER) at the physical layer and the frame drop ratio (FDR) at the medium access control layer separately. However, a better system performance, e.g., in terms of a lower overall frame loss ratio (FLR), can be achieved if BER and FDR are jointly optimized. In this paper, we propose a cross-layer optimization scheme called traffic-adaptive scheme for multicode CDMA operating over a time division multiple access (TDMA) channel. Based on the traffic condition and buffer status, this scheme employs a Markov Decision Process (MDP) to determine the optimal value of the maximum number of simultaneous data frames that can be transmitted in each time slot of a TDMA frame so as to minimize the overall FLR of the system. To facilitate implementation, we also propose an approximation scheme named the rateadaptive scheme to reduce the computation cost. Simulation and analytical results show that both the traffic-adaptive scheme and rate-adaptive scheme can significantly reduce FLR, increase the system throughput, and optimize the packet access delay of the system. Furthermore, the rate-adaptive scheme can achieve a performance close to the traffic-adaptive scheme when the traffic load in the system is high.

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A Two-Dimensional Markov Model for Cross-Layer Design in AMC/ARQ-Based Wireless Networks

Cited by 6 publications

References 23 publications

A novel cross-layer design for dynamic TXOP in IEEE802.11e

A novel cross-layer design for dynamic TXOP in IEEE802.11e

Channel-aware MAC performance of AMC-ARQ-based wireless systems

Cross-Layer Optimization for Multimedia Transport over Multicode CDMA Networks

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