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Millimeter wave (mmWave) communication is a key enabling technology for 5G cellular systems. However, due to mmWave propagation characteristics, link length for very high rates is limited and will likely necessitate the use of relay nodes for longer-range ultra-high-speed backhaul communications. This paper investigates relay selection and scheduling to support high end-to-end throughput in mmWave...
Resource allocation and traffic aggregation is becoming a significant part of the network deployment as it is expected that operators will offer advanced services through 5G systems. Scheduling procedures need to be fair but also to handle requirements set for diverse groups of users forming network slices. Heterogeneous networks will need to be controlled locally and the traffic could be split between...
Users located on the cell edge suffer from low data rates due to interference and poor reception. The Coordinated Multipoint technology targets this problem but it imposes overhead on the network, which can result in degradation of the Quality of Service. The Direct CSI feedback to Elected Coordination station architecture minimizes such overhead, resulting in improved data rates. Here, we analyze...
In this paper, we introduce a generalized analytical framework to evaluate the coverage probability in an mmWave heterogeneous cellular network (HetNet) consisting of UHF macrocell base stations (BSs) and mmWave small cell BSs deployed in an urban area. A generalized user association scheme that can cover a few user association schemes is formulated and applied in the mmWave HetNet. Two important...
Orthogonal frequency division multiple access (OFDMA) is considered as a promising technique to overcome interference in multi-cell cellular networks. However, the mobility of heterogeneous user equipment brings new challenge to traditional OFDMA network. The current research about OFDMA system mostly based on multi-cell cellular system that is not perfectly compatible with the future networks, for...
In this paper, we propose a (cell) load-aware approach to performing the downlink coordinated multi-point joint transmission (JT-CoMP) scheme in a dense heterogeneous cellular network (HetNet) consisting M tiers of different kinds of base stations (BSs). Inspiring from the fact that there could exist a considerable number of the void BSs in a dense HetNet that are not associated by any users, this...
Small cells are being deployed at increasing rates to meet the multimedia communication demand in mobile network, but inter cell interference is a challenge in the heterogeneous network. In this study, we proposed a novel method to solve the small cell placement and the interference management problem. In order to achieve a tradeoff between the quality of service of cell edges user and the whole system...
For the incoming 5G mobile communications, enhanced cell coordination is deemed as crucial to maximize network throughput. In this paper we focus on the impact that the placement of coordination controllers in the metro optical network has on the performance of cell coordination, and we aim at verifying how throughput maximization can be achieved through optimized controller placement. Specifically,...
Radiation power from the base station is highly hazardous to the human health. Macro cell environment with the aim of providing better QOs services to the mobile user are careless about the radiation power. Femto cell is an emerging cellular concept which can cater to the need the required QOs and at the same time with the base stations radiating less power. In this paper, an UMTS network with Macro...
In this paper we present a data-driven power control (DDPC) approach to improve total cell throughput and energy efficiency of ultra-dense femtocells. Although femtocells can increase the capacity and coverage in an indoor environment, ultra-dense femtocells may consume a lot of energy and generate severe interference. We investigate a data-driven clustering approach to reduce co-tier interference...
The distinction between the radio access network and the backhaul network is disappearing with emerging advanced features. The backhaul is invading the radio assess spectrum to enable wireless in-band connections and the radio network is overlapping with the transport network through cloud processing and distributed functions. As such, it is of pivotal importance to approach the optimisation of the...
In the information security field, varions algorithms are applied to provide users with a variety of security services. Although many of the algorithms are implemented in software, there is a rapidly growing demand for hardware implementations. The BlaMka algorithm is a cryptographic sponge algorithm, used in password hashing schemes (PHS) such as Lyra2 and Argon2, which are algorithms that generate...
As a micro engineered biomimetic system to replicate key functions of living organs, organs-on-a-chip (OC) technology provides a high-throughput model for investigating complex cell interactions with a high temporal and spatial resolution in biological studies. Typically, microscopy and highspeed video cameras are used for data acquisition, which are expensive and bulky. Recently, compressed sensing...
Despite that network capacity can increase with cell densification, interferences from adjacent cells may deteriorate the throughput of users close to cell edges. To alleviate this problem and to offer a service quality with no significant cell edge degradation, we propose a feasible coordinated multi-point (CoMP) transmission architecture from a new look on antenna allocation in dense small cell...
To address the challenge of unprecedented growth in mobile data traffic, ultra-dense network deployment is a cost efficient solution to offload the traffic over some small cells. The overlapped coverage areas of small cells create more than one candidate access points for one mobile station. Signal strength based user association in IEEE 802.11 results in a significantly unbalanced load distribution...
Extensive deployment of heterogeneous small cells over existing macrocell cellular networks forms the Ultra-dense Small cell Network (USN). USN has emerged as a key networking architecture in 5G wireless networks. It can improve network coverage and boost system capacity. However, the dense overlapped deployment of small cells leads to a complex interference problem. In this paper, we jointly implement...
Heterogeneous networks (HetNets) and multicell cooperation are two key technologies in cellular networks that can improve network performance. The channel information of all the collaborating Base Stations (BSs) is one of the core factors to achieve better throughput performance gain in the coordinated multipoint (CoMP) communication. Here, we propose a novel method for handling Channel State Information...
The higher demand for data traffic and the emergence of new applications has made mobile networks challenging to maintain high data rates for users, in particular those located on the cell's edges. The Coordinated Multipoint (CoMP) technology adopted in long-term evolution (LTE) cellular networks allows improving the cell's edge performance. In order to improve throughput performance gain in the downlink,...
In this paper, we focus on a beam pattern diversity of user terminals in order to improve the network-wide performance along with an inter-cell interference coordination (ICIC). Previous ICIC works mainly focused on conventional single antenna user terminals, and thus further improvement may be possible by employing the opportunistic scheduling to exploit multi-user and beam pattern diversity. Therefore,...
Cache-enabled device-to-device (D2D) networks turn memory of the devices at the network edge, such as smart phones and tablets, into bandwidth by enabling asynchronous content sharing directly between proximate devices. Limited storage capacity of the mobile devices necessitates the determination of optimal set of contents to be cached on each device. In order to study the problem of optimal cache...
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