Frequency Domain Packet Scheduling Under Fractional Load for the UTRAN LTE Downlink

Pokhariyal, A.; Monghal, G.; Pedersen, Klaus I.; Mogensen, Preben; Kovács, István Z.; Rosa, Claudio; Kolding, Troels

doi:10.1109/vetecs.2007.154

Cited by 41 publications

(12 citation statements)

References 5 publications

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“…A number of studies (i.e. [21][22][23][24]) have shown that scheduling opportunity that considers channel quality can significantly improve the system performance. Therefore, this variable is considered in the proposed algorithm.…”

Section: Packet Scheduling Algorithmmentioning

confidence: 99%

Opportunistic And Playback-Sensitive Scheduling For Video Streaming

Ramli¹,

Sandrasegaran²

2014

IJWMN

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Section: Packet Scheduling Algorithmmentioning

confidence: 99%

Opportunistic And Playback-Sensitive Scheduling For Video Streaming

Ramli¹,

Sandrasegaran²

2014

IJWMN

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“…In the authors' opinion, the magnitudes of the gains depend on many factors including CQI accuracy, CQI frequency resolution and the number of active users. In [16], the authors investigate the performance of the FDPS under fractional load generated by a Markov Chain. Their simulation shows that the PF scheduler tries to optimize resource allocation by avoiding transmission on frequencies that are experiencing severe interference.…”

Section: Previous Workmentioning

confidence: 99%

Comparative Performance Study of LTE Downlink Schedulers

Biernacki

Tutschku

2013

Wireless Pers Commun

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Long time evolution (LTE) represents an emerging and promising technology for providing broadband, mobile Internet access. Because of the limitation of available spectrum resource, high spectrum efficiency technologies such as channel-aware scheduling need to be explored. In this work, we evaluate the performance of three scheduling algorithms proposed for LTE downlink transmission. The evaluation takes place in mixed traffic scenarios and aims at exploring strengths and weaknesses of the proposed algorithms. Simulation results illustrate the importance of real-time traffic awareness by schedulers when a specified level of quality of service is required. The research shows that lack of prioritisation of multimedia traffic will lead to severe degradation of video and VoIP services even with a relatively low network load.

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“…Related Work: Several works have studied the design of throughput [5,6,9,10] and QoS [11,12] schedulers for OFDMA. How- ever, their focus has been on per-frame scheduling.…”

Section: Introductionmentioning

confidence: 99%

Design and implementation of an integrated beamformer and uplink scheduler for OFDMA femtocells

Arslan

Sundaresan²,

Krishnamurthy

et al. 2012

Proceedings of the Thirteenth ACM International Symposium on Mobile Ad Hoc Networking and Computing

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Beamforming is a signal processing technique with numerous benefits. Unlike with omni-directional communications, it focuses the energy of the transmitted and/or the received signal in a particular direction. Although beamforming has been extensively studied on conventional systems such as WiFi, little is known about its practical impact on OFDMA femtocell deployments. Since OFDMA schedules multiple clients (users) in the same frame (in contrast to WiFi), designing intelligent scheduling mechanisms and at the same time leveraging beamforming, is a challenging task.Unlike downlink, we show that the integration of beamforming with uplink scheduling projects an interesting trade-off between beamforming gain on the one hand, and the power pooling gain resulting from joint multi-user scheduling on the other hand. This, in turn, makes the uplink scheduling problem even hard to approximate. To address this, we propose algorithms that are simple to implement, yet provably efficient with a worst case guarantee of half. We implement our solutions on a real WiMAX femtocell platform integrated with an eight-element phased array beamforming antenna. Evaluations from both prototype implementation and trace-driven simulations show that our solution delivers throughput gains of over 40% compared to an omni-directional scheme.

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Frequency Domain Packet Scheduling Under Fractional Load for the UTRAN LTE Downlink

Cited by 41 publications

References 5 publications

Opportunistic And Playback-Sensitive Scheduling For Video Streaming

Opportunistic And Playback-Sensitive Scheduling For Video Streaming

Comparative Performance Study of LTE Downlink Schedulers

Design and implementation of an integrated beamformer and uplink scheduler for OFDMA femtocells

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