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.
Traffic offloading is an attractive solution for the operators to increase the system radio capacity in the future cellular networks. Device to Device (D2D) technology helps achieve this goal by allowing direct communication between closely located user devices. However, as D2D devices transmit on the cellular network uplink bandwidth, the communication mode selection should be properly studied in...
Heterogeneous networks (HetNets) are likely to provide ubiquitous access to mobile broadband services as they involve various small cells, each targeting a different environment in the network. In this paper, we are interested in improving the system performance at the cell edge. Hence, we consider a HetNet composed of an eNodeB (eNB) coexisting with different relay nodes (RNs) situated at the cell...
Carrier Aggregation (CA) is a promising solution to enhance peak throughput in LTE-Advanced or Small Cells Networks (SCN). Thanks to this technique, a terminal becomes able to transmit on one or multiple component carriers. However, many issues in terms of radio resource allocation and mobility should be addressed. In this paper, we aim at improving carrier component allocation during inter-cell handovers...
Cell Range Expansion (CRE) is a promising solution to offload macrocells' traffic and improve the radio capacity in Heterogeneous Network (HetNet). On the other hand, enhanced Inter-Cell Interference Coordination (eICIC) techniques are introduced in HetNets to mitigate the severe interference caused between the small cells and the macrocell. In this paper, we present a novel application of the CRE...
Mobile communication systems have evolved considerably in recent years encouraging the deployment of multiple systems or multi-cellular technology. Quality of service (QoS) offered to mobile users improves from one system to another for example 4G systems, offer better QoS than that offered by 3G and 3.5G systems. In addition, 4G systems such as LTE (Long Term Evolution) can expand cellular coverage...
Relaying is a promising technique for the next generation cellular networks. It is highly recommended in the 3GPP LTE-Advanced because it is expected to satisfy the ever growing capacity and coverage demands in a cost-efficient way. Yet, in order to fully exploit the benefits of relaying, we should examine the radio resource allocation between the eNB and the relay nodes. In this paper, we propose...
Deploying decode-and-forward relay nodes is a promising solution for LTE-advanced networks in order to meet the growing data rate demand and the challenging requirements for coverage extension. However, relay selection scheme plays a crucial role in enhancing the benefit of this technology. In this paper, we have proposed a new relay selection scheme which achieves a more balanced load in the network,...
A wireless ad-hoc network is an autonomous system of wireless routers, fixed or mobile those communicate with each other via radio links without the support of any fixed wired infrastructure. In such a topology, communication is achieved by use of multiple hop paths between the sender and the receiver. Wireless ad-hoc networks constitute a typical paradigm of networks whose performance and operability...
In this paper, we propose a new dynamic frequency assignment scheme for femtoCells in OFDMA networks. The femtoCell base stations are small cellular base stations specially designed to improve the poor indoor coverage and increase the system capacity for cellular and wireless broadband networks. However, these femto-base stations cause harmful interference to the macroCells. Therefore, the optimization...
In this paper, we propose a pricing model for variable bandwidth demand services, combined by an optimized resources allocation strategy in an OFDMA based WiMAX systems. The users satisfaction level and the operator revenue are the two keys for the pricing scheme we propose. The relationship with the channels allocation is investigated and a two step based allocation method is proposed using linear...
In this paper, we propose a new Call Admission Control (CAC) for 802.16 systems. The scheme is based on a dynamic adjustment of the bandwidth offered to all rtPS (Real time polling services) and nrtPS (Non real time plolling services) active connections, for each new connection establishment request in order to maximize the number of accepted connections, without affecting the quality of service offered...
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.