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Articles 1 - 6 of 6
Full-Text Articles in Physical Sciences and Mathematics
Content Placement As A Key To A Content-Dominated, Highly Mobile Internet, Abhigyan Sharma
Content Placement As A Key To A Content-Dominated, Highly Mobile Internet, Abhigyan Sharma
Doctoral Dissertations
Most of the Internet traffic is content, and most of the Internet connected hosts are mobile. Our work focuses on the design of infrastructure services needed to support such a content-dominated, highly mobile Internet. In the design of these services, three sets of decisions arise frequently: (1) Content placment for selecting the locations where a content is placed, (2) request redirection for selecting the location where a particular request is served from and (3) network routing for selecting the physical path between clients and the services they are accessing. Our central thesis is that content placement is a powerful factor, …
Forensic And Management Challenges In Wireless And Mobile Network Environment, Sookhyun Yang
Forensic And Management Challenges In Wireless And Mobile Network Environment, Sookhyun Yang
Doctoral Dissertations
The Internet recently passed an historic inflection point, with the number of broadband wireless/mobile devices surpassing the number of wired PCs and servers connected to the Internet. Smartphones, laptops, tablets, machine-to-machine (M2M) devices, and other portable devices have penetrated our daily lives. According to Cisco, by 2018, wired devices will account for only 39% of IP traffic, with the remaining traffic produced by wireless/mobile devices. This proliferation of wireless/mobile devices is profoundly changing many of the characteristics of network applications, protocols, and operation, and posing fundamental challenges to the Internet architecture. In light of this new trend, this thesis focuses …
Design And Implementation Of An Economy Plane For The Internet, Xinming Chen
Design And Implementation Of An Economy Plane For The Internet, Xinming Chen
Doctoral Dissertations
The Internet has been very successful in supporting many network applications. As the diversity of uses for the Internet has increased, many protocols and services have been developed by the industry and the research community. However, many of them failed to get deployed in the Internet. One challenge of deploying these novel ideas in operational network is that the network providers need to be involved in the process. Many novel network protocols and services, like multicast and end-to-end QoS, need the support from network providers. However, since network providers are typically driven by business reasons, if they can not get …
Energy-Efficient Content Delivery Networks, Vimal Mathew
Energy-Efficient Content Delivery Networks, Vimal Mathew
Doctoral Dissertations
Internet-scale distributed systems such as content delivery networks (CDNs) operate hundreds of thousands of servers deployed in thousands of data center locations around the globe. Since the energy costs of operating such a large IT infrastructure are a significant fraction of the total operating costs, we argue for redesigning them to incorporate energy optimization as a first-order principle. We focus on CDNs and demonstrate techniques to save energy while meeting client-perceived service level agreements (SLAs) and minimizing impact on hardware reliability. Servers deployed at individual data centers can be switched off at low load to save energy. We show that …
Robust Mobile Data Transport: Modeling, Measurements, And Implementation, Yung-Chih Chen
Robust Mobile Data Transport: Modeling, Measurements, And Implementation, Yung-Chih Chen
Doctoral Dissertations
Advances in wireless technologies and the pervasive influence of multi-homed devices have significantly changed the way people use the Internet. These changes of user behavior and the evolution of multi-homing technologies have brought a huge impact to today's network study and provided new opportunities to improve mobile data transport. In this thesis, we investigate challenges related to human mobility, with emphases on network performance at both system level and user level. More specifically, we seek to answer the following two questions: 1) How to model user mobility in the networks and use the model for network provisioning? 2) Is it …
Effectiveness Of Cloud Services For Scientific And Vod Applications, Dilip Kumar Krishnappa
Effectiveness Of Cloud Services For Scientific And Vod Applications, Dilip Kumar Krishnappa
Doctoral Dissertations
Cloud platforms have emerged as the primary data warehouse for a variety of applications, such as DropBox, iCloud, Google Music, etc. These applications allow users to store data in the cloud and access it from anywhere in the world. Commercial clouds are also well suited for providing high-end servers for rent to execute applications that require computation resources sporadically. Cloud users only pay for the time they actually use the hardware and the amount of data that is transmitted to and from the cloud, which has the potential to be more cost effective than purchasing, hosting, and maintaining dedicated hardware. …