Busy Bursts for Trading off Throughput and Fairness in Cellular OFDMA-TDD

Ghimire, Birendra; Auer, Gunther; Haas, Harald

doi:10.1155/2009/462396

Cited by 26 publications

(15 citation statements)

References 6 publications

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“…The score-based scheduler with reservation [18] is used for distributing N C chunks among U S users served by an Ghimire …”

Section: User Schedulingmentioning

confidence: 99%

“…With the proposed approach, the assignment of chunks in a tagged AP is adjusted dynamically depending on the location of an active user in the neighboring cell. To facilitate this, each user equipment (UE) must broadcast a BB [17,18] in a timemultiplexed slot after successfully receiving data in order to reserve the chunk for the next frame. The AP that intends to transmit on a given chunk must listen to the BB slot corresponding to that chunk.…”

Section: Introductionmentioning

confidence: 99%

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Self-organising interference coordination in optical wireless networks

Ghimire

Haas

2012

J Wireless Com Network

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In this article, self-organising interference management for optical wireless networks deployed inside an aircraft cabin is investigated. A user that has received data in a given frame and intends to continue receiving data in the next frame broadcasts a busy burst (BB) in a time-multiplexed BB slot. The tagged access point (AP) intending to reuse a resource reserved in a neighbouring cell must listen to the BB slot. Provided that channel reciprocity holds, the tagged AP infers (prior to transmission) the amount of co-channel interference (CCI) potentially caused towards the victim user in neighbouring cell. This is a vital information for an AP to decide without any central supervision whether to transmit or defer the transmission to another time or frequency slot so as to limit CCI caused to the active link to a threshold value. Simulation results demonstrate that the BB approach significantly improves both fairness and spectral efficiency in the system compared to a static resource partitioning approach.

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“…The score-based scheduler with reservation [18] is used for distributing N C chunks among U S users served by an Ghimire …”

Section: User Schedulingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Self-organising interference coordination in optical wireless networks

Ghimire

Haas

2012

J Wireless Com Network

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“…In order to simplify the scheduling, the BSs may treat each beam channel as a single-antenna terminal capable of receiving one data stream. Furthermore, the sounding beams corresponding to already allocated data streams are considered as busy signals [7] by the other BSs.…”

Section: Csi Sounding and Busy Signalingmentioning

confidence: 99%

CSI signaling for decentralized coordinated beamforming in TDD multi-cell MIMO systems

Komulainen

Tölli

Juntti

2010

2010 Conference Record of the Forty Fourth Asilomar Conference on Signals, Systems and Computers

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In this paper we present a novel multi-cell TDD CSI sounding concept for terminals employing multiple antennas. The objective is to support decentralized downlink beam coordination with minimal or no backhaul traffic between the base stations (BS). Each BS makes its own scheduling and precoding decisions independently, based on the locally available CSI and knowledge of the prior scheduling decisions made in the network. The concept combines interference-aware CSI sounding to busy signaling so that the sounding beams corresponding to the already allocated downlink data streams are considered as busy beams by the neighboring BSs. We experiment the concept in conjunction with simple regularized zero-forcing precoding and greedy beam scheduling.

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“…Later, the focus of research shifted towards self-optimization in heterogeneous networks using load balancing [8]. With the advent of Long Term Evolution (LTE), the research on LTE self-optimization involves RRM parameters like interference mitigation using inter-cell interference coordination (ICIC) [9,10], load balancing [11,12] and bandwidth allocation [13].…”

Section: Introductionmentioning

confidence: 99%

Self-organizing inter-cell interference coordination in 4G and beyond networks using genetic algorithms

et al. 2017

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The design objective of the 4G and beyond networks is not only to provide high data rate services but also ensure a good subscriber experience in terms of quality of service. However, the main challenge to this objective is the growing size and heterogeneity of these networks. This paper proposes a genetic-algorithm-based approach for the self-optimization of interference mitigation parameters for downlink inter-cell interference coordination parameter in Long Term Evolution (LTE) networks. The proposed algorithm is generic in nature and operates in an environment with the variations in traffic, user positions and propagation conditions. A comprehensive analysis of the obtained simulation results is presented, which shows that the proposed approach can significantly improve the network coverage in terms of call accept rate as well as capacity in terms of throughput.

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Busy Bursts for Trading off Throughput and Fairness in Cellular OFDMA-TDD

Cited by 26 publications

References 6 publications

Self-organising interference coordination in optical wireless networks

Self-organising interference coordination in optical wireless networks

CSI signaling for decentralized coordinated beamforming in TDD multi-cell MIMO systems

Self-organizing inter-cell interference coordination in 4G and beyond networks using genetic algorithms

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