Qatar Mobility Innovations Center: المرسلات الحديثة
السجلات المعروضة 181 -- 200 من 278
-
Radio resource management in integrated wired/wireless LTE femtocell networks
( Springer , 2014 , Article)In this paper, radio resource management (RRM) in LTE femtocell networks is investigated in an integrated wired/wireless environment. In such a scenario, femtocell access points (FAPs) are assumed connected via wired links ... -
Physically separated uplink and downlink transmissions in LTE HetNets based on CoMP concepts
( Institution of Engineering and Technology , 2014 , Conference)In this paper, we present a novel transmission and reception scheme in LTE heterogeneous networks (HetNets) that exploits the concept of Coordinated Multipoint (CoMP). In the proposed scheme, the uplink (UL) and downlink ... -
LTE BS placement optimization using simulated annealing in the presence of femtocells
( VDE VERLAG GMBH , 2014 , Conference)In this paper, we address the phase of radio network planning and optimization (RNPO) related to base station (BS) deployment in the presence of femtocell access points (FAPs). After determining an approximate number of ... -
A genetic algorithm solution for the operation of green LTE networks with energy and environment considerations
( Springer , 2012 , Conference)The Base Station (BS) sleeping strategy has become a well-known technique to achieve energy savings in cellular networks by switching off redundant BSs mainly for lightly loaded networks. Besides, the exploitation of ... -
Optimized LTE Cell Planning with Varying Spatial and Temporal User Densities
( IEEE , 2016 , Conference)Base station (BS) deployment in cellular networks is one of the fundamental problems in network design. This paper proposes a novel method for the cell planning problem for fourth-generation (4G) cellular networks using ... -
Energy-efficient two-hop LTE resource allocation in high speed trains with moving relays
( IEEE , 2014 , Conference)High-speed railway system equipped with moving relay stations placed on the middle of the ceiling of each train wagon is investigated. The users inside the train are served in two hops via the 3GPP Long Term Evolution (LTE) ... -
Performance of green LTE networks powered by the smart grid with time varying user density
( IEEE , 2013 , Conference)In this study, we implement a green heuristic algorithm involving the base station sleeping strategy that aims to ensure energy saving for the radio access network of the 4GLTE (Fourth Generation Long Term Evolution) mobile ... -
On using relays with carrier aggregation for planning 5G networks supporting M2M traffic
( IEEE , 2014 , Conference)In this paper, the joint use of carrier aggregation (CA) and relay stations (RSs) to support machine-to-machine (M2M) traffic in 5G networks is investigated. The focus of the paper is mainly on fixed M2M devices, periodically ... -
Achieving energy efficiency in LTE with joint D2D communications and green networking techniques
( IEEE , 2013 , Conference)In this paper, the joint operation of cooperative device-to-device (D2D) communications and green cellular communications is investigated. An efficient approach for grouping mobile terminals (MTs) into cooperative clusters ... -
On the extension of traditional resource allocation algorithms in LTE-A to joint UL-DL scheduling with FDD carrier aggregation
( IEEE , 2014 , Conference)Through and spectral efficiency maximization are two of the most challenging issues to be addressed by current and future cellular networks. To achieve these goals however, radio resources need to be utilized in a coordinated ... -
Enhanced connectivity in railroad networks using LTE relays with directive antennas
( IEEE , 2013 , Conference)Performance enhancements of cellular networks for passengers in high speed railway systems are investigated. Relays placed on top of each train car are proposed. These relays communicate with the mobile terminals (MTs) ... -
A practical approach for base station on/off switching in green LTE-A HetNets
( IEEE , 2014 , Conference)This paper describes a method for BS on/off switching in LTE-Advanced (LTE-A). The proposed method uses information exchanged between base stations (BSs) on the X2 interface in order to determine the BSs that should be ... -
SVC video streaming over cooperative LTE/802.11p vehicle-to-infrastructure communications
( IEEE , 2013 , Conference)Collaborative techniques for real-time video streaming of scalable video coded (SVC) videos over vehicle to infrastructure (V2I) communications are investigated. In the studied methods, roadside units (RSUs) communicate ... -
Air quality monitoring and analysis in Qatar using a wireless sensor network deployment
( IEEE , 2013 , Conference)In this paper, an actual deployment of a wireless sensor network is described. The purpose of the sensor network is to monitor and analyze air quality in Doha. Small scale wireless sensor stations communicate with a backend ... -
Green Virtualization for Multiple Collaborative Cellular Operators
( IEEE , 2017 , Conference)This paper proposes and investigates a green virtualization framework for infrastructure sharing among multiple cellular operators whose networks are powered by a combination of conventional and renewable sources of energy. ... -
Bandwidth and power allocation for two-way relaying in overlay cognitive radio systems
( IEEE , 2014 , Conference)In this paper, the problem of both bandwidth and power allocation for two-way multiple relay systems in overlay cognitive radio (CR) setup is investigated. In the CR overlay mode, primary users (PUs) cooperate with cognitive ... -
On the use of device-to-device communications for QoS and data rate enhancement in LTE public safety networks
( IEEE , 2014 , Conference)In this paper, device-to-device (D2D) communications are investigated in the framework of LTE public safety networks. A clustering approach to enhance the performance of public safety D2D networks is proposed. In each ... -
On the capacity and spatial fairness trade-off in planning sectorization and frequency reuse
( IEEE , 2013 , Conference)The intrinsic trade-off between the capacity and Quality of Service (QoS) has long been subject of investigation in the design of MAC layer scheduling, power and call admission control mechanisms. However, from prospective ... -
Optimized green operation of LTE networks in the presence of multiple electricity providers
( IEEE , 2012 , Conference)Energy efficiency aspects in cellular networks can significantly contribute to the reduction of greenhouse gas emissions and help to save the environment. The base station (BS) sleeping strategy has become a well-known ... -
Interference mitigation in femtocell networks with joint channel sensing and resource allocation
( IEEE , 2015 , Conference)Joint channel sensing and resource allocation in femtocell networks is investigated. An approach consisting of using jointly a sensing module in addition to a normal femto module performing resource allocation simultaneously ...