Energy-efficient multimedia transmissions through base station cooperation over heterogeneous cellular networks exploiting user behavior

Zhang, Xing; Yu, Rong; Zhang, Yan; Gao, Yue; Im, Sio‐Kei; Cuthbert, Laurie; Wang, Wenbo

doi:10.1109/mwc.2014.6882296

Cited by 50 publications

(22 citation statements)

References 10 publications

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“…For instance, the authors in [12] introduce an enhanced architecture for multicast transmissions over heterogeneous cellular networks aimed at improving energy efficiency in multicast delivery. In this scenario, macro-cells provide wide-area coverage while small base stations (e.g., femto-cells) provide high data rates locally in hotspot regions.…”

Section: Macro/small Cell Cooperationmentioning

confidence: 99%

“…In general, the complexity represents the most challenging issue to be solved in 5G systems. Although the use of network coding has emerged as a promising approach to improve the reliability of multicast transmissions [12] without additional resource requirements, the complexity problem is exacerbated by the expected large amount of MTC devices with reduced computational capabilities. In addition, the computational cost for beamform calculation at the base station increases data delivery latency.…”

Section: Future Research Directionsmentioning

confidence: 99%

“…By surveying the relevant literature on this topic, it emerges that, until now, the primary research efforts have focused on approaches to boost the data rate performance (based on short-range links [4,5], beamforming [12][13][14], network coding [10,11], etc.) in the view of an improved quality of experience (QoE) of subscribers.…”

Section: Introductionmentioning

confidence: 99%

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Multicasting over Emerging 5G Networks: Challenges and Perspectives

et al. 2017

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Section: Macro/small Cell Cooperationmentioning

confidence: 99%

Section: Future Research Directionsmentioning

confidence: 99%

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Multicasting over Emerging 5G Networks: Challenges and Perspectives

et al. 2017

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“…In [14], the authors present an architecture for multimedia transmission over HetNets and propose an energy efficient multimedia transmission scheme to optimize the energy efficiency of the BSs by exploiting user behavior characteristics. Reference [15] considers a downlink multiuser orthogonal frequency-division multiple access (OFDMA) system and proposes an optimal power and subcarrier allocation scheme to maximize the sum energy efficiency of users under the total transmit power constraint.…”

Section: Introductionmentioning

confidence: 99%

An Optimal Joint User Association and Power Allocation Algorithm for Secrecy Information Transmission in Heterogeneous Networks

Chai

Chen

et al. 2017

Wireless Communications and Mobile Computing

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In recent years, heterogeneous radio access technologies have experienced rapid development and gradually achieved effective coordination and integration, resulting in heterogeneous networks (HetNets). In this paper, we consider the downlink secure transmission of HetNets where the information transmission from base stations (BSs) to legitimate users is subject to the interception of eavesdroppers. In particular, we stress the problem of joint user association and power allocation of the BSs. To achieve data transmission in a secure and energy efficient manner, we introduce the concept of secrecy energy efficiency which is defined as the ratio of the secrecy transmission rate and power consumption of the BSs and formulate the problem of joint user association and power allocation as an optimization problem which maximizes the joint secrecy energy efficiency of all the BSs under the power constraint of the BSs and the minimum data rate constraint of user equipment (UE). By equivalently transforming the optimization problem into two subproblems, that is, power allocation subproblem and user association subproblem of the BSs, and applying iterative method and Kuhn-Munkres (K-M) algorithm to solve the two subproblems, respectively, the optimal user association and power allocation strategies can be obtained. Numerical results demonstrate that the proposed algorithm outperforms previously proposed algorithms.

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“…Thanks to the prevalence of the on-line social websites and instant messaging systems, the study of social network research in temporal, spatial and content domains have been utilized to characterize the group user behaviors [1][2] [3]. Deploying small cells can help to satisfy high-speed requirements and overcome the bottlenecks of limited backhaul.…”

Section: Introductionmentioning

confidence: 99%

Energy Efficiency Analysis of Heterogeneous Cache-Enabled 5G Hyper Cellular Networks

Zhang

Imran

et al. 2016

2016 IEEE Global Communications Conference (GLOBECOM)

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Abstract-The emerging 5G wireless networks will pose extreme requirements such as high throughput and low latency. Caching as a promising technology can effectively decrease latency and provide customized services based on group users behaviour (GUB). In this paper, we carry out the energy efficiency analysis in the cache-enabled hyper cellular networks (HCNs), where the macro cells and small cells (SCs) are deployed heterogeneously with the control and user plane (C/U) split. Benefiting from the assistance of macro cells, a novel access scheme is proposed according to both user interest and fairness of service, where the SCs can turn into semi-sleep mode. Expressions of coverage probability, throughput and energy efficiency (EE) are derived analytically as the functions of key parameters, including the cache ability, search radius and backhaul limitation. Numerical results show that the proposed scheme in HCNs can increase the network coverage probability by more than 200% compared with the single-tier networks. The network EE can be improved by 54% than the nearest access scheme, with larger research radius and higher SC cache capacity under lower traffic load. Our performance study provides insights into the efficient use of cache in the 5G software defined networking (SDN).

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Energy-efficient multimedia transmissions through base station cooperation over heterogeneous cellular networks exploiting user behavior

Cited by 50 publications

References 10 publications

Multicasting over Emerging 5G Networks: Challenges and Perspectives

Multicasting over Emerging 5G Networks: Challenges and Perspectives

An Optimal Joint User Association and Power Allocation Algorithm for Secrecy Information Transmission in Heterogeneous Networks

Energy Efficiency Analysis of Heterogeneous Cache-Enabled 5G Hyper Cellular Networks

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