5G Ultra-Dense Cellular Networks

Ge, Xiaohu; Tu, Song; Mao, Guoqiang; Wang, Cheng-Xiang; Han, Tao

doi:10.1109/mwc.2016.7422408

Cited by 1,015 publications

(517 citation statements)

References 15 publications

(26 reference statements)

Supporting

Mentioning

506

Contrasting

Unclassified

Order By: Relevance

“…In order to provide an increased data rate and improved service control, the C/U 1 split architecture of Ge et al [4] is adopted in our UDN, where the APs are deployed in a hot-spot area and the macro-cell provides always-on coverage. The over-sailing MBS controls the UE handover, while the APs are responsible for transmitting the UE data.…”

Section: A System Modelmentioning

confidence: 99%

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

Lin

Zhang

et al. 2018

IEEE Trans. Veh. Technol.

View full text Add to dashboard Cite

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.

show abstract

Section: A System Modelmentioning

confidence: 99%

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

Lin

Zhang

et al. 2018

IEEE Trans. Veh. Technol.

View full text Add to dashboard Cite

show abstract

“…The proposed 5G architecture is heterogeneous and can comprise of microcells, macrocells, relays and mobile femtocells in a Cloud Radio Access Network (C-RAN) in order to support promising wireless technologies such as massive Multi-Input Multi-Output (massive MIMO), Device-to-Device (D2D) communication, spatial modulation and millimeter wave (mmWave) communication [12], [13]. The 5G cellular network is proposed to be ultra-dense by employing these technologies.…”

Section: Formative Architecture Of 5gmentioning

confidence: 99%

Feasibility, architecture and cost considerations of using TVWS for rural Internet access in 5G

Khalil

Qadir

Onireti

et al. 2017

2017 20th Conference on Innovations in Clouds, Internet and Networks (ICIN)

View full text Add to dashboard Cite

Abstract-The cellular technology is mostly an urban technology that has been unable to serve rural areas well. This is because the traditional cellular models are not economical for areas with low user density and lesser revenues. In 5G cellular networks, the coverage dilemma is likely to remain the same, thus widening the rural-urban digital divide further. It is about time to identify the root cause that has hindered the rural technology growth and analyse the possible options in 5G architecture to address this issue. We advocate that it can only be accomplished in two phases by sequentially addressing economic viability followed by performance progression. We deliberate how various works in literature focus on the later stage of this 'two-phase' problem and are not feasible to implement in the first place. We propose the concept of TV band white space (TVWS) dovetailed with 5G infrastructure for rural coverage and show that it can yield cost-effectiveness from a service provider's perspective.

show abstract

“…An advantage of this second approach is that only the statistical CSI, not the instantaneous one is required. 2 The instantaneous CSI h i j is used here only for the convenience of representing the instantaneous DL transmit power. As it will be shown in Section III, what we need is the average DL transmit power.…”

Section: Comp-enhanced Power Consumption Modelingmentioning

confidence: 99%

“…It is widely recognized that a promising technique of increasing the network capacity is that of shrinking the coverage area of base stations (BSs) with the spectral resource spatially reused as densely as possible [2]- [5]. However, the tremendous increase in the number of BSs and mobile devices will inevitably lead to fast-rising energy cost and severe interference caused by the massive number of BSs deployed in self-organized patterns.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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.

View full text Add to dashboard Cite

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.

show abstract

5G Ultra-Dense Cellular Networks

Cited by 1,015 publications

References 15 publications

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

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

Feasibility, architecture and cost considerations of using TVWS for rural Internet access in 5G

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

Contact Info

Product

Resources

About