5 Pillars of 5G
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5 key building blocks for 5G, as illustrated besides are elaborated herein. Each of these blocks is discussed with highlights their role and importance for achieving 5G
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Cognitive Radio
Auction theory, as a subfield of economics, provides useful tools to model, analyze, and optimize radio resource management in cognitive radio environments. By using an auction, radio resources such as subchannel, time slot, and transmit power can be allo…
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In this article,a discussion on a spectrum trading mechanism implemented by the spectrum broker in TV whitespaces is provided. TV Whitespaces are spectrum frequency bands unused by DTV, interleaved in both frequency and space. Underutilization of these ban…
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This article presents experimental and simulation results for the use of TV band devices (TVBDs) in TV white space, considering the presence of interference by incumbent services. Digital TV (DTV) services are major incumbent services currently operating i…
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LTE (Long Term Evolution) promises to deliver an unrivalled user experience with ultra fast broadband and very low latency and at the same time, a very compelling business proposition for operators with flexible spectrum bandwidth, smooth migration and the …
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Cognition is the scientific term for the process involved in knowing, which includes perception and judgement. Such process intelligently detects surrounding environment and makes decision based on what is learnt. Recent advancements in sensor technologies …
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New Networking Paradigms
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The advent of autonomic systems, the multiplication of networks, the presence of huge storage capacity at the edges of the old network (more specifically in the terminals, cell phones, media centers, and so on), and the growing intelligence outside the networ…
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The popularity of tablets, smartphones and mobile broadband connections has contributed to an explosion in data volumes in mobile networks. Customers can enjoy high data speeds on the move and value the wide-area availability of quality broadband connectivity…
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Nowadays, there are many routing protocols available for mobile ad-hoc networks. They mainly use instantaneous parameters rather than the predicted parameters to perform the routing functions. They are not aware of the parameter history. The value of hop coun…
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The main interest in the TV bands is driven by the worldwide switchover from analogue to digital terrestrial TV which will release a large portion of spectrum known as the “digital dividend”, and might also make available the guard bands between existing or n…
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TV White Spaces: Spectrum Sensing
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One of the important components of the IEEE 802.22 document to achieve the required cognitive capability is related to spectrum measurements. The spectrum measurement in 802.22 is primarily based on transmitter detection. In order to check the presence of pri…
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There are two trends in cognitive radio; one trend is the so-called “Multiple Systems,” which switches wireless communication systems according to the radio conditions. The other trend is the so-called “Dynamic Spectrum Access,” which recognizes spare frequen…
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Today SON functionalities are considered an integral part of future RANs. They provide a means to simplify network management tasks, to reduce operational costs, and to enhance network performance and profitability. The inclusion of SON functionalities in the…
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Over the past century but accelerating over the past couple of decades, we have seen the emergence of a kind of global data field. The planet itself - natural systems, human systems, physical objects - have always generated an enormous amount of data, but we …
Continue ReadingThe next wave in the era of computing will be outside the realm of the traditional desktop. In the Internet of Things paradigm, everything of value will be on the network in one form or another. Radio frequency IDentification (RFID) and sensor network technol…
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Hovering information is a mobile computing paradigm where pieces of self-organizing information are responsible to find their own storage on top of a dynamic set of mobile devices. Once deployed, the hovering information service acts as a location-based servi…
Continue ReadingTo examine cognitive radio from a security perspective we again return to its definition. One of the strongest features of a cognitive radio is the fact it takes in and processes so much information. In other words it observes much. It then adapts its behavio…
Continue ReadingCollaboration among cognitive nodes is a feature of many cognitive radio applications. Collaboration can take place in the context of sensing, in the context of any self-organising process, in the context of sharing resources, for bargaining purposes, during …
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Spectrum sensing in very broad terms involves the detection, by a given receiver, of the presence of a transmitted signal of interest. The ability of a cognitive radio to dynamically access white spaces that dynamically appear is predicated upon its ability t…
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In opportunistic networks end-to-end communication between users does not require a continuous end-to-end path between source and destination. Network protocols are designed to be extremely resilient to events such as long partitions, node disconnections, etc…
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