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A major challenge in wireless sensor network (WSN) is data collection in a disconnected network while ensuring a viable throughput for the sensors or the nodes in the network. Incorporating mobility-assisted data collection where no other means of data gathering is feasible is a growing trend among researchers. There are many works in literature which exploit mobility to derive throughput using protocol...
Cognitive radio networks will play important role in future wireless networks. This paper proposes a new resource allocation strategy in cooperative multi-relay cognitive radio networks, in which multi second users can work as the relays of primary users to accelerate the data transmission when the channel between primary transmitter and primary receiver is weak. In the strategy, the data transmission...
Due to rapid increase of network bandwidth, applications and systems working in long fat network (LFN) play more important roles. For effective development of them, precise measurements of network conditions are significant. Transmission Control Protocol (TCP) is the most commonly used protocol, but is essentially unable to achieve high throughput in LFNs with packet losses. For this reason, it is...
Device-to-Device communication is an essential component in the evolution towards the Internet of Things. The relatively new WiFi-Direct standard allows devices to communicate directly over the well established IEEE 802.11 protocol without the need for an intermediate access point. The increased range and bandwidth advantage of WiFi-Direct over existing short-range technologies such as Bluetooth and...
Recent years have witnessed that standard telecommunication services evolved more and more to complex value-added services. This fact is accompanied by a change of service characteristics as new services are designed to fulfil the customer's demands instead of just focusing on technologies and protocols. Besides, service providers have to consider a fast transition from concept to market product as...
In this paper we provide efficient statistical tools for the prediction of the required number of satellite terrestrial stations in a hybrid Satellite — Mobile Ad Hoc NETwork (MANET). We propose to consider the average statistical behavior of the network. We first analytically estimate the number of hybrid satellite gateway stations (HSs) in a typical cluster. A strategy for the terrestrial path discovery...
With the development of Internet, new applications are emerging in an endless stream, and traditional applications are constantly changing. Over the past decade, Internet applications develop rapidly, and great changes have taken place in application traffic characteristics of ordinary hosts and servers. Analyzing Internet application traffic characteristics is meaningful to understanding today's...
Future wireless networks are witnessing a major demand for mobile data, which necessitates reconsidering the design and deployment of their infrastructures. To fill this gap, the next-generation mobile 5G is defined as one of the promising solutions. Although the heterogeneous network, the small cell concept and the Cognitive Radio (CR) are considered as key drive technologies for 5G, the major challenge...
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