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The quality of service for an end user is defined by the quality of the network links connecting user and service provider. There are several parameters impacting network communication links, a very important one being the available end-to-end bandwidth. Bandwidth measurements in cellular wireless networks with traffic reactive nature, nomadic end users and highly dynamic shared resources is a challenging...
We propose a novel technique for the accommodation of mobile base stations (BSs) and a secondary system with a time division duplex (TDD) frame monitor. By increasing the number of BSs accommodated in a passive optical network (PON), the cost of mobile fronthaul (MFH) can be reduced. To realize even further cost reduction, a secondary system is accommodated in the PON with the MFH while the mobile...
Nowadays, mobile applications/devices have become the trends, especially, when they were gradually shifted from basic communication services to supporting more sophisticated service provisioning. Mobile applications are usually very light, are nowadays likely to be often connected to the Internet, and can be used quite easily. However, these applications exhibit some challenges related to limited...
Using Peer-to-Peer technology to deliver live video streams to mobile devices is a promising approach. It allows service providers to scale their video distribution without increasing their cost. As the resources are replicated at the edge of the network, mobile devices can take advantage of close-by peers in order to get the required data faster. This, however, is challenging due to the highly dynamic...
This paper presents a large scale BANs system in the presence of cloudlet-based data collection. The objective is to minimize end-to-end packet cost by dynamically choosing data collection to the cloud using cloudlet based system. The goal is to have the monitored data of BANs to be available to the end user or to the service provider in reliable manner. While reducing packet-to-cloud energy, the...
Providers of location-based services seek new methods to authenticate the location of their clients. We propose a novel infrastructure-based solution that provides spontaneous and transaction-oriented mobile device location authentication via an integrated 802.11× wireless access point and 3G femtocell access system. By simply making a voice call while remotely monitoring femtocell activity, a calling...
Increased commodity use of mobile devices has the potential to enable mission-critical monitoring applications. However, these mobile-enabled monitoring applications have to often work in environments where a delay-tolerant network (DTN) is the only feasible communication paradigm. Detection of complex (composite) events is fundamental to monitoring applications. However, the existing plan-based CED...
Mobile cloud computing is a combination of mobile computing and cloud computing, and provides cloud computing environment through various mobile devices. Recently, due to rapid expansion of smart phone market and wireless communication environment, mobile devices are considered as resource for large scale distributed processing. But mobile devices have several problems, such as unstable wireless connection,...
Many industrial and medical scenarios today are building on mobile devices as their end systems. These devices are typically connected to backend systems via the mobile phone network with their corresponding data services. Today's network protocols are optimized for reliable transfer of voice traffic, however, available bandwidth and latency for data traffic may vary significantly with location and...
The objective of this paper is to present a realization of vertical Handover which is applicable for 4G communication networks. The authors have realized vertical handover in four levels. Four different experiments have been conducted in the laboratory corresponding to four levels from basic fundamental level to final complex levels of vertical handover. It is observed that acceptance; lock and track...
A prominent function of a mobile host is seamless Vertical Handoff (VHO) that ensures application service continuity and quality. VHO decision algorithms that have been proposed in the literature consider parameters such as wireless channel quality (RSSI), cost, channel load, and available bandwidth. The mobile node runs the VHO algorithm autonomously and makes the decision. We highlight the fact...
Bandwidth is one of the most common terms in digital communication as it represents the supported amount of data that a link or network path can send per unit of time. Multimedia application's performance is directly impacted by available bandwidth because these applications have diverse Quality of Service (QoS) requirements. Internet is now a necessary technology in our daily life, and because of...
Tram rail transport is an important part of the underground coal mine transportation and it is also accident-prone, so the establishment of tram rail monitoring system in coal mine is essential. Conventional wired monitoring system has some problems and can not monitor the running of tram in real time. It makes the wireless mobile monitoring system for tram rail transport in underground coal mines...
The increasing demand for all time and every where services requires the network operators to integrate different kinds of wireless and cellular networks. To enable this integration, it is important that users can roam freely across networks. But, as different technologies are involved, the problem of vertical handover (VHO) needs to be addressed. Solutions in the literature lack intelligence and...
3GPP Long Term Evolution (LTE) is a Next Generation (4G) Wireless Technology, providing an evolutionary path for 3G/UMTS deployments. The LTE network architecture is based on a flat all-IP architecture which requires a full mesh connectivity between the LTE evolved Base stations (eNBs). Carrier Ethernet has emerged as a strong candidate to meet the highly scalable and flexible requirements of the...
Nowadays, technologies are providing the mobile terminals with much more powerful computational abilities. Such improvement made it possible to run many complex applications on mobile devices. However, many of these new applications are also resources demanding. Lacking sufficient resources would cause performance failures and impact negatively on the users' quality of experience. In order to improve...
Wireless Mesh Networks (WMNs) have been expected to be future commercial service-grade networks. OAM (Operations, Administration, and Maintenance) in wired networks is an important tool to guarantee a reliable network performance, WMNs needs such a tool to meet the service providers requirements, and to handle mobility problem. We propose a fundamental architecture of wireless mesh network OAM to...
A new network transmission framework highlighting the concept of cross-layer co-design for packet loss reduction is presented in this article. The proposed framework takes into account the correlation between the packet loss rate and the packet size under a given channel condition, and assigns different tasks to layers involved: physical/ MAC layer for monitoring current channel statuses, IP layer...
Low-cost wireless routers are changing the way people connect to the Internet. They are also very cheap, albeit quite limited, Linux boxes. These attributes make them ideal candidates for wireless mesh routers. This paper presents a minimally invasive mechanism for redundant multipath routing in kernel-space to achieve high reliability with high throughput in a mesh network. This service is essential...
Dynamic spectrum management (DSM) is a key feature for enhancing cooperation in wireless video sensor network (WVSN) towards supporting communication of high data-rate video information. Unlike traditional spectrum allocation, DSM in WVSN should have topology control and distributed control center. In this paper, we propose an ILST algorithm for constructing distributed DSM topology control with the...
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