16,647 research outputs found

    Trends in office internal gains and the impact on space heating and cooling demands

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    Internal gains from occupants, equipment and lighting contribute a significant proportion of the heat gains in an office space. Looking at trends in Generation-Y, it appears there are two diverging paths for future ICT demand: one where energy demand is carefully regulated and the other where productivity enhancers such as multiple monitors and media walls causes an explosion of energy demand within the space. These internal gains scenarios were simulated on a variety of different building archetypes to test their influence on the space heating and cooling demand. It was demonstrated that in offices with a high quality facade, internal gains are the dominant factor. As a case study, it was shown that natural ventilation is only possible when the ICT demand is carefully regulated

    Mandate-driven networking eco-system : a paradigm shift in end-to-end communications

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    The wireless industry is driven by key stakeholders that follow a holistic approach of "one-system-fits-all" that leads to moving network functionality of meeting stringent End-to-End (E2E) communication requirements towards the core and cloud infrastructures. This trend is limiting smaller and new players for bringing in new and novel solutions. For meeting these E2E requirements, tenants and end-users need to be active players for bringing their needs and innovations. Driving E2E communication not only in terms of quality of service (QoS) but also overall carbon footprint and spectrum efficiency from one specific community may lead to undesirable simplifications and a higher level of abstraction of other network segments may lead to sub-optimal operations. Based on this, the paper presents a paradigm shift that will enlarge the role of wireless innovation at academia, Small and Medium-sized Enterprises (SME)'s, industries and start-ups while taking into account decentralized mandate-driven intelligence in E2E communications

    Special Session on Industry 4.0

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    The silver lining: cloud computing and small and medium enterprises

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    This paper shows how Australian businesses can get the most out of one of the biggest global innovations: information communications technology. Overview: Innovation – the successful application of new ideas – drives Australia’s productivity. Australia’s biggest innovation opportunity lies in creatively exploiting global innovations. One of the biggest of these is information and communications technology. Small and medium enterprises (SMEs) are an engine of the Australian economy. They employ two-thirds of Australian private sector workers and contribute half of Australia’s private sector GDP. Yet many SMEs have low productivity. Innovations may spread slowly to many smaller firms because they lack the capital or market intelligence that large firms can access. Online innovations – including mobile devices, e-commerce, and cloud computing – offer opportunities for firms of all sizes to become far more productive. This paper explores issues raised at a workshop run by Grattan Institute and Google on how policymakers and business can accelerate the spread of cloud computing among SMEs. It uses cloud computing – the delivery of on-demand information technology services over the Internet – as a case study for how online technologies can benefit smaller firms. Cloud computing can help level the playing field for smaller firms. It allows them to access sophisticated IT services that were previously out of reach. For example, it can allow them to manage and monitor their sales, operations and finances in real time. The cloud also offers capabilities that were previously unavailable to firms of any scale. For example, it allows multiple users to access applications or update documents at the same time from mobile devices. Cloud computing makes it easier for small firms to take new ideas to market. Firms that use cloud computing report more growth in revenue and profit than others do. But many Australian SMEs say they do not use cloud services. Many are not aware of the benefits or believe they do not have skills to capture them. Some are concerned about transition costs, data security and privacy. Networks are too slow or unreliable for cloud services in some areas of the country. Workshop participants agreed that government and industry can remove obstacles to the use of cloud computing and help SMEs capture its benefits. The industry itself should lead the education of SMEs on the case for cloud computing. Yet government can:  Choose policy settings that promote broader productivity growth and innovation;  Ensure interaction with government over the internet is the default for all businesses;  Provide an appropriate policy environment for investment in broadband networks that meet the needs of small business. Information technology’s contribution to productivity is just getting started. Small and medium enterprises should get on board

    Game Theoretic Approaches to Massive Data Processing in Wireless Networks

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    Wireless communication networks are becoming highly virtualized with two-layer hierarchies, in which controllers at the upper layer with tasks to achieve can ask a large number of agents at the lower layer to help realize computation, storage, and transmission functions. Through offloading data processing to the agents, the controllers can accomplish otherwise prohibitive big data processing. Incentive mechanisms are needed for the agents to perform the controllers' tasks in order to satisfy the corresponding objectives of controllers and agents. In this article, a hierarchical game framework with fast convergence and scalability is proposed to meet the demand for real-time processing for such situations. Possible future research directions in this emerging area are also discussed

    Fronthaul evolution: From CPRI to Ethernet

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    It is proposed that using Ethernet in the fronthaul, between base station baseband unit (BBU) pools and remote radio heads (RRHs), can bring a number of advantages, from use of lower-cost equipment, shared use of infrastructure with fixed access networks, to obtaining statistical multiplexing and optimised performance through probe-based monitoring and software-defined networking. However, a number of challenges exist: ultra-high-bit-rate requirements from the transport of increased bandwidth radio streams for multiple antennas in future mobile networks, and low latency and jitter to meet delay requirements and the demands of joint processing. A new fronthaul functional division is proposed which can alleviate the most demanding bit-rate requirements by transport of baseband signals instead of sampled radio waveforms, and enable statistical multiplexing gains. Delay and synchronisation issues remain to be solved
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