QoS-Aware Traffic Scheduling in LTE-Advanced Relay-Enhanced Networks

Moraes, Thiago Martins de; Saleh, Abdallah Bou; Bauch, Gerhard; Seidel, Eiko

doi:10.1109/vtcspring.2013.6692725

Cited by 3 publications

(4 citation statements)

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“…[4]'te ise TCP kullanıcılarının performansını artırmak amacıyla ACK paketleri önceliklendirilmiş, TCP kullanıcılarının hem gecikme hem de iş verimliliğinde iyileştirme sağlanmıştır. Kullanıcılardan gelen raporlara göre CQI değerini yeniden düzenleyerek gerçek zamanlı ve gerçek olmayan zamanlı kullanıcılara kaynak dağıtımını gerçekleyen mekanizma [5], eNB ve relay node (RN) kullanıcıları arasında belirlenen yük oranında makul servis kalitesi sağlamıştır. Bu bildiride, mobil iletişim ağlarının gerçek zamanlı trafik kullanıcılarınn servis kalitesini desteklemesi amacıyla MaxCQI algoritması trafik türüne göre kaynak tahsisi yapacak şekilde yeniden tasarlanmıştır.…”

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A QoS-aware reconfigurable LTE MAC scheduler

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Hökelek

et al. 2014

2014 22nd Signal Processing and Communications Applications Conference (SIU)

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ÖZETÇEAkıllı mobil cihazların kullanımının yaygınlaşması mobil iletişimde yüksek veri hızına olan ihtiyacı ortaya çıkarmıştır. Bu ihtiyacın karşılanması amacıyla 4. nesil iletişim teknolojilerinden LTE geliştirilmiştir. LTE'nin sunduğu yüksek kapasiteler sayesinde ses, görüntü ve veri trafiği IP paketler ile taşınarak dijital yakınsama gerçekleştirilir. Artan VoIP ve video kullanımının servis kalitesini düşürmemek ve gerçek zamanlı trafik kullanıcılarına daha iyi hizmet verilebilmek için yeni mekanizmalara ihtiyaç vardır. Bu bildiride, mobil iletişim ağlarının, gerçek zamanlı kullanıcıların servis kalitesini desteklemesi amacıyla, MaxCQI algoritması trafik türüne göre kaynak tahsisi yapacak şekilde yeniden tasarlanmıştır. OMNeT++ kullanılarak yapılan simulasyonlar önerilen çizelgeleyici algoritmasının, var olan MaxCQI çizelgeleyicisine göre gerçek zamanlı UDP ve gerçek olmayan zamanlı TCP trafiğinin, uçtan uca gecikme değerlerinde ve iş çıkarma (throughput) yeteneğinde gelişme gösterdiği görülmüştür. Önerilen çizelgeyici algoritmasındaki parametrenin yeniden yapılandırılması ile gerçek zamanlı trafiğin gecikme değerindeki iyileştirme ile taşınan TCP veri miktarındaki azalma arasındaki değiş tokuş ağ yöneticisi tarafından ayarlanabilmektedir. ABSTRACT The widespread usage of smartphones reveal the necessity of higher data rates in mobile communication networks. LTE, one of the 4th generation cellular technologies, has been developed to meet high capacity needs. LTE enables the digital convergence via carrying audio, video and data traffic over IP packets. In this paper, a novel LTE downlink scheduling algorithm is designed to support Quality of Service (QoS) requirements of real-time users such as VoIP and video streaming. OMNeT++ based simulations illustrate that the proposed scheduling algorithm improves end to end delay and througput values of real-time UDP and nonrealtime TCP flows compared to the existing MaxCQI scheduler. The tradeoff between the amount of improvement in the endto-end delay of real-time traffic and the amount of degradation in the throughput of non-real time traffic can be arranged by tuning a parameter of the proposed scheduling algorithm.

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A QoS-aware reconfigurable LTE MAC scheduler

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et al. 2014

2014 22nd Signal Processing and Communications Applications Conference (SIU)

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“…This paper focuses on backhaul subframes, often hardly treated compared with access subframes, in most works. Resource allocation (RA) in backhaul subframes has been addressed in the literature from different perspectives [3][4][5][6][7][8][9][10]. In [3][4]6] the proposals are based on fixed frequency partition schemes and they focus on strategies to share the available resources among RNs served by the DeNB.…”

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confidence: 99%

“…In [5][6][7]10] the proposals are focused on computing the resource demands of each relay considering several criteria. In [3][4][5][8][9][10] the RA algorithm distributes the resources between direct and backhaul links. However, in most cases, ICIC is not considered and/or quiet orthogonal frequency assignations among RNs and between backhaul and direct links are exclusively assumed.…”

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confidence: 99%

“…In [7], the resource demand of each RN in backhaul subframes is estimated considering the relay buffer level, and the aim is to keep the relay buffer size near zero. RA in [8][9] includes how to split the resources at DeNB to serve direct and backhaul links, in addition to several QoS scheduling strategies for backhaul links in order to satisfy the QoS constraints of rUEs. In a similar way, in [10], firstly the authors propose a dynamic frequency partitioning algorithm between direct and backhaul links and then, a backhaul link RA algorithm based on user's requirements is proposed, considering the total data buffered at DeNB for each RN.…”

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confidence: 99%

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Dynamic, fair and coordinated resource allocation for backhaul links for heterogeneous load conditions in LTE-advanced relay systems

Eguizábal

Hernández

2014

2014 6th International Congress on Ultra Modern Telecommunications and Control Systems and Workshops (ICUMT)

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Relaying is considered in LTE-A networks as a promising solution to increase the capacity and improve the coverage. Resource sharing among different nodes and links and inter-cell interference coordination (ICIC) are challenging issues to obtain a real performance gain linked to relay deployments. This paper focuses on Type 1 half-duplex inband relaying. We propose a dynamic resource allocation (RA) and ICIC algorithm for backhaul subframes, in which the resources allocated to each RN in its backhaul link are dynamically adjusted, considering the aggregate traffic demand of its users in heterogeneous load distributions among RNs. The aim is to achieve a fair resource distribution among RNs, using efficient coordinated frequency reuse schemes, which not only reduce ICI but also minimize the impact on the bandwidth availability of macrocell users.

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Analysis of an Adaptive Priority Based Resource Allocation Control for LTE-Advanced Communications with Type I Relay Nodes

AlQahtani

2014

Wireless Pers Commun

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QoS-Aware Traffic Scheduling in LTE-Advanced Relay-Enhanced Networks

Cited by 3 publications

References 3 publications

A QoS-aware reconfigurable LTE MAC scheduler

A QoS-aware reconfigurable LTE MAC scheduler

Dynamic, fair and coordinated resource allocation for backhaul links for heterogeneous load conditions in LTE-advanced relay systems

Analysis of an Adaptive Priority Based Resource Allocation Control for LTE-Advanced Communications with Type I Relay Nodes

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