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We describe a “crowd measurement” project, referred to as PoQeMoN, whose main objective is to identify Quality of Service (QoS) indicators in order to predict the Quality of Experience (QoE) for HTTP YouTube content on mobile networks. Results are based on experiments on an operational network. The second contribution of this paper is to show that the proposed indicator is easy to implement in order...
The smart grid is a modern electricity grid that uses wireless technologies to control and supervise the substation and the electricity generation and consumption sides. Several wireless technologies can be used for smart grid communication such as Long-Term evolution (LTE) and Worldwide Interoperability for Microwave Access (WiMAX). However, LTE is the most compatible network for the smart grid because...
Mobile data offloading using Wi-Fi hotspots is increasingly utilized as it satisfies the huge traffic demand and boosts network capacity. For that reason, several studies have been carried out to define the best approaches to offload IP flows from LTE to Wi-Fi. In this paper, we investigate the offload optimization problem from an LTE-A network to Wireless Mesh network (WMN) owned by the operator...
Using Wi-Fi hotspot is increasingly adopted by operators as it boosts network capacity. For that reason, several studies have been carried out to define the best approaches to route IP flows from LTE through Wi-Fi.
This paper proposes a new cross-layer based packet scheduling scheme for multimedia traffic in Long Term Evolution (LTE)/LTE Advanced (LTE-A) network. The effective use of the limited resources still remains a major challenge in mobile networks across the globe. A dynamic user scheduling scheme is very important towards actualizing an effective utilization of the limited available resources in LTE/LTE-A...
Mobile networks in the military tactical domain, include a range of radio networks with very diverse characteristics and which may be employed differently from operation to operation. When interconnecting networks with dissimilar characteristics (e.g. capacity, range, mobility) a difficult trade-off is to fully utilize the diverse network characteristics while minimizing the cost. To support the ever...
Real life data from three Mobile Operators has been used to successfully test a New Model of Quality of Experience (QoE) in Broadband Services. The Platform utilized is based on Open Source Tools and it generates Key Quality Indicators (KQI) simulating the final user's perception of the service. The detailed characterization of: a) the consolidated usage profile, b) the transport and application protocols...
This paper proposes a QoE-driven LTE downlink scheduling algorithm which is able to maximise the number of users per cell while maintaining an acceptable QoE for VoIP applications. The QoE-driven scheduling algorithm was implemented in LTE-Sim and its performance was compared to common LTE scheduling algorithms. The main difference between QoE-driven scheduling and existing scheduling mechanisms was...
With increasing requirements of mobile users on computational demanding applications, the need for offloading of computation to a cloud is a convenient way to provide high QoS and to lower energy consumption of a User Equipment (UE). However, common centralized cloud can prolong overall application processing time due to high delay of data delivery from the UE to the cloud and back. To reduce data...
Mobile Network Operators around the world are improving their 3G/UMTS (Third Generation/Universal Mobile Telecommunication System) network by introducing DC-HSPA+ (Dual-Carrier Evolved High Speed Packet Access). However, it has remained unclear how well the current networks fulfill the commitments of performance guarantee of OTT (over-the-top) services. In this paper, a field test platform called...
Worldwide Interoperability for Microwave Access or better known as WiMAX is an air-interface standard in accordance with the IEEE 802.16. Mobile WiMAX or IEEE 802.16e standard defines five different service classes which can be used to satisfy the VoIP QoS. In this study, different trajectory is applied to the MS with the encoder of G.711 and G.729 in order to identify which encoder gives the best...
Development of machine-to-machine communication technologies encourages an increasing amount of mobile traffic by smart phones, cellular phones, and various sensors. This traffic consists of small packets in order to minimize the influence of frame dropping in a data link layer. However, it is necessary to reduce the number of packets flowing into the core network to chunk packets, while satisfying...
The mobile ecosystem is currently facing tremendous changes; in particular, the actual deployment of 4G will probably not be sufficient to totally fit the upcoming mobile data traffic explosion. This mismatch may be explained by the low marginal revenues expectable from mobile data compared to huge investments it requires. Consequently, congestion may appear soon in radio access networks, thus degrading...
LTE (Long Term Evolution) is becoming the fastest growing mobile communications technology ever. IEEE 802.11 and IEEE 802.15 standards is also developing on the other side. IEEE 802.11 standards (WLAN-Wireless Local area Network) provides higher data rates and less coverage. In the next generation networks, it is very important to increase the coverage area and efficiency of WLAN standards. Hence...
Mobile Network Operators (MNOs) are currently facing challenging times. With flat revenues and intense competition from ‘Over The Top’ (OTT) providers, they are searching for new opportunities that will enable revenue growth. The impending migration towards LTE presents a number of challenges as well as opportunities, especially in the area of Policy Control. The Evolved Packet Core (EPC) architecture...
The Long Term Evolution (LTE) may provide ubiquitous mobile broadband services with all IP architecture, however, the quality of service (QoS) of LTE systems is seriously affected by the network congestions, packet losses, jitters, latencies and other QoS issues in all IP networks. Thus it is valuable to investigate and design efficient resource scheduling algorithms to improve the performance of...
The study of the end-to-end QoS (Quality of Service) features of wireless networks may give to mobile operators ways to manage the network infrastructures from a trustworthy and robustness perspective, to optimize the network usage and guarantee desired quality of services to end user. In this paper a review of studies on end-to-end QoS in LTE networks is presented. The most important features of...
End-to-end QoS is a challenge for future Internet. A per flow resource reservation can be carried out among heterogeneous domains on the communication path using signaling protocols. When one or both communicating terminals are mobile there is additional complexity. Signaling delays and resource lacking on future paths can dramatically impact user experience. In this paper, a rational future path...
There is an increasing trend of accessing multimedia and web services embedded with Presence service over the mobile, which have driven the telecom operators to look for the new and better ways to provide such services. Presence service puts a lot of load on the IMS network and it can contribute 50% or more to the total signaling load which can increase end-to-end delay. In this paper we have analyzed...
The key challenges of the QoS-oriented satellite MAC technology are conditioned mainly by long-delay space medium. They represent phenomena of MAC's performance degradation (ldquotime barrierrdquo) and dynamical instability (ldquodynamic barrierrdquo) which appear when the propagation time increases. The delay-tolerant MACs should guarantee an effective overcoming of both barriers. We showed that...
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