Coordinated Multipoint Transmission in Dense Cellular Networks With User-Centric Adaptive Clustering

Garcia, Virgile; Zhou, Yiqing; Shi, Jinglin

doi:10.1109/twc.2014.2316500

Cited by 196 publications

(101 citation statements)

References 17 publications

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“…This is previously argued by authors in [6], who show that a UE-centric solution will be optimal in terms of both outage probability as well as throughput (so called good-put), although they only discuss it from a clustering perspective but propose to extend their work with a distributed graph coloring scheme for the resource assignment.…”

Section: Motivations and Related Workmentioning

confidence: 97%

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Multi-point fairness in resource allocation for C-RAN downlink CoMP transmission

Beylerian

Ohtsuki

2016

J Wireless Com Network

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We investigate the resource allocation dynamics of Coordinated Multi-Point (CoMP) transmissions in a Cloud' Radio Access Network (C-RAN) deployment. In this context, we propose a service-aware user-centric scheme that achieves fairness in a multi-point fashion for the downlink. This approach operates in time-frequency and space, assuming a fixed power per transmitter. The scheme adaptively chooses overlapping clusters of serving stations on a per-user basis and effectively schedules the users in their preferred sets. We show how throughput and delay improvements can be achieved fairly for both center and edge users, with QoS considerations in the time domain and a Product of Metrics (POM) in the frequency domain that prunes the user-centric clusters.

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Section: Motivations and Related Workmentioning

confidence: 97%

“…Effectively, dynamic cell clustering techniques have been previously proposed by different authors, and usually rely on optimizing certain targets such as geometry gain or good-put [6].…”

Section: Motivations and Related Workmentioning

confidence: 99%

Multi-point fairness in resource allocation for C-RAN downlink CoMP transmission

Beylerian

Ohtsuki

2016

J Wireless Com Network

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“…As an explicit benefit of AP cooperation, user-centric overlapped clustering has been found eminently suitable for UDNs. For example, Garcia et al [31] designed a user-centric adaptive clustering method for maximizing each AP's normalized outage capacity. It has been shown that the performance of joint transmission in UDNs relying on user-centric adaptive clustering is capable of enhancing the system performance by beneficially adapting the coordination to match each UE's specific condition.…”

Section: B Related Workmentioning

confidence: 99%

Graph-Based Joint User-Centric Overlapped Clustering and Resource Allocation in Ultradense Networks

Lin

Zhang

et al. 2018

IEEE Trans. Veh. Technol.

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Abstract-With the increase of access point (AP) density and the exponential growth of mobile devices supported by ultra dense networks (UDNs), user-centric overlapped clustering relying on AP cooperation is becoming a promising design principle for guaranteeing the quality of service (QoS) required by each UE. This ambitious goal can be achieved by the joint design of user-centric overlapped clustering and resource allocation. In this context, both the traffic-load balancing and the limited availability of orthogonal resource blocks (RBs) have to be carefully considered in UDNs. To tackle these challenges, we formulate a joint user-centric overlapped clustering and resource allocation problem with the goal of maximizing the system's spectral efficiency (SE). To efficiently solve this problem, it is decoupled into two subproblems, which can be solved independently with the aid of our graph-theoretical framework. We first develop a novel distributed three-stage user-centric clustering solution, which is aware of the APs' traffic-loads. Then, based on the overlapped clusters constructed, we propose a novel two-stage graph-based user-centric resource allocation scheme for mitigating the resultant inter-cluster interference, despite the limited availability of orthogonal RBs. Our numerical results confirm the benefits of the proposed framework and show that it outperforms the benchmark solutions in terms of both its per area aggregated user rate (PAAR) and user rate.

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“…In particular, the authors of [38] integrated a multi-BS CoMP mechanism with a largescale cellular network and improved the users' coverage probability by carefully choosing a suitable CoMP cluster.…”

Section: A Related Workmentioning

confidence: 99%

Joint Energy-Spectral-Efficiency Optimization of CoMP and BS Deployment in Dense Large-Scale Cellular Networks

Zhao

Chen

Zhao

et al. 2017

IEEE Trans. Wireless Commun.

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Abstract-In this paper, the energy-spectral efficiency (ESE) benefiting from the joint optimization of coordinated multipoint (CoMP) transmission and base station (BS) deployment are evaluated in the context of dense large-scale cellular network. We first derive a closed-form network ESE expression for a largescale CoMP-enhanced network, which allows us to quantify the influence of key network parameters on the achievable network ESE, including the BS density and the cooperation activation probability characterized by a CoMP activation factor as well as the users' behaviors, such as their geographical mobile-traffic intensity and average user rate. With the aid of this tractable ESE expression and for a given BS density, we next formulate a cellular-scenario-aware CoMP activation optimization problem whilst considering the users' outage probability as constraints to maximize the network's ESE. We then further jointly optimize the CoMP activation factor and the BS density to maximize the network ESE, again under the constraint of the users' outage probability. Our simulation results confirm the accuracy of our analysis and verify the impact of several key parameters on the network ESE. Finally, the ESE improvement of our proposed strategies is evaluated under diverse scenarios, which provides valuable insight into joint CoMP and BS deployment optimization in dense large-scale cellular networks.

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Coordinated Multipoint Transmission in Dense Cellular Networks With User-Centric Adaptive Clustering

Cited by 196 publications

References 17 publications

Multi-point fairness in resource allocation for C-RAN downlink CoMP transmission

Multi-point fairness in resource allocation for C-RAN downlink CoMP transmission

Graph-Based Joint User-Centric Overlapped Clustering and Resource Allocation in Ultradense Networks

Joint Energy-Spectral-Efficiency Optimization of CoMP and BS Deployment in Dense Large-Scale Cellular Networks

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