Design of Control Architecture for Downlink CoMP Joint Transmission with Inter-eNB Coordination in Next Generation Cellular Systems

Okamawari, Takao; Zhang, Liang; Nagate, Atsushi; Hayashi, Hideki; Fujii, Teruya

doi:10.1109/vetecf.2011.6093036

Cited by 8 publications

(2 citation statements)

References 12 publications

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“…In recent years, coordinated multi-point (CoMP) transmission technology has been raised as a promising way to reduce the inter-cell interference and improve the spectrum efficiency (SE) at the cell edge through the cooperation among adjacent evolved Node Bs (eNBs) [4] [5]. CoMP can be generally divided into two categories, i.e., joint processing (JP) and coordinated beamforming (CB).…”

Section: Introductionmentioning

confidence: 99%

Distributed CoMP transmission for cell range expansion with almost blank subframe in downlink heterogeneous networks

Wang

2015

Proceedings of 2015 International Conference on Intelligent Computing and Internet of Things

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The almost blank subframe (ABS) has been studied in 3GPP as a way to mitigate downlink interference experienced by cell range expansion (CRE) user equipments (UEs). However, the throughput of CRE UEs highly depends on the ratios of ABS which are statically configured in many situations. The coordinated multi-point (CoMP) is one of the key solutions standardized in LTE-A which can be implemented in CRE with ABS to exploit the abundant spatial resources. And distributed cell selection could help guarantee the UEs' performance under different range expansion biases. In this paper, a distributed CoMP method for CRE with ABS is proposed in heterogeneous networks. Simulation results show that our proposed algorithm provides considerable performance gains in the spectrum efficiency with different bias and users settings.Keywords-CoMP, range expansion, almost blank sub/rame, heterogeneous networks 1.

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Section: Introductionmentioning

confidence: 99%

Distributed CoMP transmission for cell range expansion with almost blank subframe in downlink heterogeneous networks

Wang

2015

Proceedings of 2015 International Conference on Intelligent Computing and Internet of Things

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“…As a solution to the issue, CoMP JT based on a distributed cooperation approach using inter-eNB interface such as X2 interface has been proposed [8,9]. In the distributed cooperation, joint signal transmission is conducted from the geographically-separated eNBs; this is realized by achieving accurate synchronization based on Global Positioning System (GPS).…”

Section: Introductionmentioning

confidence: 99%

Field Experiment of CoMP Joint Transmission over X2 Interface for LTE-Advanced

Nagate

Nabatame

Ogata

et al. 2013

2013 IEEE 77th Vehicular Technology Conference (VTC Spring)

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Multiple base station cooperation techniques have been attracting much attention for the improvement in cell-edge throughput recently. In 3GPP, such techniques are referred to as CoMP and studied actively. Joint transmission is a promising technique in CoMP. In CoMP JT, previous studies have mainly focused on intra-eNB CoMP because it is relatively easy to implement. The intra-eNB CoMP JT in combination with optical fiber systems such as RRH or RoF can realize throughput improvement at cell edge. However, the number of RRHs being able to be connected to the same eNB is usually limited to a few because of the signal-processing capability of eNB. Therefore, CoMP JT can be used only within the cells connected to the same eNB, which makes it impossible to use CoMP JT between at any cell border. To enable all cell-edge UEs enjoy the merit of CoMP JT, CoMP JT based on a distributed cooperation approach using inter-eNB interface such as X2 interface has been proposed. In the distributed cooperation, CoMP JT can be realized in a distributed manner, so that CoMP JT can be used at any cell border. However, the previous studies focused on only concepts or evaluation by computer simulations. To verify the feasibility and its effect with real system, we developed a prototype system of CoMP JT realized on a distributed cooperation approach using inter-eNB interface. The technical details to realize it is shown in this paper. We also conducted laboratory and field experiments and demonstrated its feasibility. Also, we confirmed that drastic throughput improvement at cell edge can be realized with the real system.

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A C‐RANApproach for5GApplications

Huq

Rodrı́guez

2016

Backhauling/Fronthauling for Future Wireless Systems

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Design of Control Architecture for Downlink CoMP Joint Transmission with Inter-eNB Coordination in Next Generation Cellular Systems

Cited by 8 publications

References 12 publications

Distributed CoMP transmission for cell range expansion with almost blank subframe in downlink heterogeneous networks

Distributed CoMP transmission for cell range expansion with almost blank subframe in downlink heterogeneous networks

Field Experiment of CoMP Joint Transmission over X2 Interface for LTE-Advanced

A C‐RANApproach for5GApplications

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