The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Femtocells are an inexpensive solution to address weak indoor cellular coverage. Femtocells increase network coverage, offloaded macro cell sites, and provide high data rate services in a cost-effective manner. However, several aspects of this new technology are ambiguous or not defined in standard, such as QoS architecture, bandwidth request management and subscribers flows priority. This paper provides...
This paper seeks to explore the integration of spectrum and network resource management functionalities for the benefit of achieving higher performance and capacity gains in an International Mobile Telecommunications-Advanced (EVIT-A) scenario. Supporting wider bandwidth up to 100MHz is one of the key features for EVIT-Advanced systems. Spectrum aggregation (SA) has been studied as a major solution...
Deployment of newer generation cellular systems backed by new application usage trend, innovative device and operator's business model increase the mobile broadband traffic exponentially. It is found that most of the mobile data traffic is generated from the indoor. Increase of indoor traffic reduces the overall capacity of the cell and degrades the user's experience all over the network. This paper...
There is a growing demand in the telecom sector for economic models that allow stakeholders to calculate the value of radio spectrum. This increasing necessity is due to growth of both spectrum demand and offer. On the demand side, soaring mobile broadband has made mobile operators demand additional spectrum to improve their network efficiencies. Regarding the offer side, technology neutrality (refarming),...
Current devices use a network selection policy that is mostly driven by the physical layer, choosing the point of attachment with the highest Received Signal Strength Indicator (RSSI). Unfortunately for 802.11 networks, RSSI is not a good indicator of actual network performance as it is normally the bandwidth to the Internet and not the wireless signal conditions which dictates the quality of service...
Mobile tactical networks are characterized by their extremely low bandwidth and require performance optimisations in order to support both voice and data traffic. In this paper, we propose a cross-layer architecture to achieve this. The proposed architecture maintains a clean horizontal interface between layers to maintain interoperability while also allowing layers to share their operational state...
According to many studies, incumbent companies often struggle to respond adequately when faced with technological discontinuities. This research examines how three incumbent mobile network operators (MNOs) in Germany responded in terms of their strategy to the emergence of the wireless local area network (W-LAN) technology and how they interpreted this potentially disruptive technology in their own...
Mobile network has been tremendously increased in the number of users, diversity of applications and of interface technologies. Also mobile network need to provide sufficient adaptive End-to-End QoS management mechanism to provide enhanced user satisfaction. In this paper, we propose a new adaptive End-to-End QoS management mechanism based on the concept of utility function which we have borrowed...
This paper aims at achieving a successful WiMAX system, by providing the optimized downlink resources using a proper balance between the revenue of service providers and the satisfaction of subscribers. For these two resources, our framework integrates two management mechanisms, namely, adaptive power allocation (APA) and call admission control (CAC), Since it is difficult to solve the APA-CAC optimization...
Service delivery in a heterogeneous wireless network environment requires the selection of an optimal access network. Indeed, the selection of a non-optimal network can result in undesirable effects such as higher costs in terms of new call blocking and handoff call dropping rates or poor service experience. Network selection in such an environment is influenced by several factors related to network...
In this paper, we discuss resource management in modern wireless communications with the objective of minimizing power consumption, and carry out an analysis of simultaneous transmission and orthogonal transmission schemes in an FDMA (Frequency Division Multiple Access) framework. Based on a two-link line model with path-loss only, the performance of these two schemes for network power minimization...
We carry out a comprehensive analysis of a range of wireless network efficiency considerations. Firstly, we explore the properties and the implications of the power-versus bandwidth-efficiency criteria. Secondly, we perform a detailed top-down analysis of a typical commercial wireless network, which emphasizes the inherent differences between the aforementioned two efficiency metrics, while demonstrating...
This research proposed an effective mechanism for an effective solution to tackle missing data problem in the handoff delay. The focus of this research is the effective combination of multicast-base and forecast enhancement prediction mechanism. This solution will help future network management for bandwidth reservation for mobile users in motion.
With the rapid development of mobile communication and the proliferation of mobile terminals, multimedia mobile business (MMB) is proposed and becomes a hot point of the research. 4G networks where the bandwidth wonpsilat be the transmission bottleneck will provide powerful support to MMB. As an important part of 4G, MANET is not capable of providing MMB because of the varying wireless channels, so...
In this paper, we focus on proactive radio resource management schemes that retain the quality of the individual connections by pre-reserving the needed resources in a cellular network. We propose a new scheme, which improves older proactive solutions. Typically, in such solutions an improvement in call dropping probability negatively impacts new call blocking probability. We improve this framework...
Overcoming problems associated with network dynamicity and unreliable channels has been a challenge for data dissemination protocols in vehicular networks. In this paper, we present an overview on the most interesting solutions that have been proposed to perform data dissemination in this environment. Starting from this analysis, we present a novel approach that can efficiently address a reliable...
The knowledge of the present available bandwidth on a network path is essential in numerous contexts, such as network management and streaming applications. A network path nowadays often contains at least one wireless link. This is obviously true for mobile users having a wireless connection to the Internet through a laptop or mobile terminal. The existing tools for measuring end-to-end available...
We present in this paper a novel solution to the problem of vertical handoff for wireless networks when a mobile node carries multiple communication sessions with different QoS requirements. We solve this issue by treating it as a group decision making problem. We extend the classical AHP (Analytic Hierarchy Process) method to provide the mobile node with two types of solutions: a deterministic solution...
Bandwidth management is a key feature for providing quality of service (QoS) in contemporary mobile ad hoc networks (MANETs). In this paper, we present a novel approach to bandwidth reservation which is designed for highly mobile environments. In this scheme, a node takes into account the bandwidth requirements of its 2-hop neighbors. The design of this scheme does not depend on any routing protocol...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.