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The demand for multimedia services in modern networks has experienced exponential growth in recent years and it is expected to dominate the mobile traffic in near future. On the other hand, the link capacity of mobile networks is limited due to the scarce wireless resources. Caching is a popular technique that uses available storage capability of the mobile devices to relieve this traffic tension...
Recently, LTE high-speed mobile communications have allowed service developers to create various interactive applications using push communications. In a push communication, a paging procedure is required to find the location of the target mobile terminal and to notify the arrival of the pushed data. The Mobility Management Entity (MME) speculatively sends many copies of a paging message to base stations...
In this paper, the concept of moving small cells in mobile networks is presented and evaluated taking into account the dynamics of the system. We consider a small cell moving according to a Manhattan mobility model which is the case when the small cell is deployed on the top of a bus following a predefined trajectory in areas which are generally crowded. Taking into account the distribution of user...
In Wireless Sensor Networks (WSNs), the nodes mobility model determines the network functionality which strongly influences the network lifetime, coverage and the energy consumption as well. So, the mobility strategy choice is very important in several critical application areas. The present paper proposes a mobility model that respects the network coverage while efficiently managing the spent energy...
As defined by WHO and ITU, mobile health (mHealth) is expected to change healthcare service modes and will be at the core of the future healthcare system. As for considering human activities, hotspot and indoor environments are the major scenarios to carry mHealth services (e.g., homecare). To accommodate mHealth services, dense/superdense small-cell layout in Heterogeneous Networks (HetNets) is a...
Power management of Wi-Fi interfaces can greatly impact the battery life time of a smart device. Thus, many commercial devices utilize the Power Save Mode — Adaptive (PSM-A) mechanism for energy saving by switching wireless radio between high and low power. Tail time is introduced in PSM-A to put the radio in high power state until the time expires, allowing near future packets to arrive without much...
Given a wireless network topology, a maximum number of users with specified Quality of service “QoS” requirements, including delay constraints, are allowed to transmit and receive data. Therefore, the best solution is to establish a partition of radio resources that provides a minimum quality for each user in the network. If all users can not be served in the same time, it is important to classify...
The success of smartphones has encouraged over-the-top service providers to seek ways in which they can have more control over the wireless service offered to their users. Google Project Fi is an example for this type of action, where control over the wireless service is achieved by either deploying own wireless infrastructure or entering into service level agreements with mobile network operators...
Recently, research on wireless sensor networks with mobile sinks (mWSN) has attracted a lot of attention. The mobility of such sinks often results in unpredictable changes of network topology, and brings big challenge to the design of efficient routing protocols for such networks. In this paper, we focus on design of an energy efficient distributed routing protocol for mWSNs. For this purpose, we...
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