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Although broadband Internet relishes wide penetration in Pakistan, performance of fixed and wireless broadband networks have not been thoroughly investigated from perspective of end-users. To the best of our knowledge, no independent study exists to date documenting home user broadband experience in Pakistan. This dearth of information is troubling as benchmarking broadband performance is fundamentally...
Advances in multimedia and network technology enables to stream UHD video over public Internet. However, previous congestion control schemes have several limitations to guarantee the quality of UHD video streaming. The sluggish behavior of congestion control scheme disturbs the rapid increase in video quality. Another problem is burst packet losses caused by overshooting of transmission rate. These...
Content Centric Networking (CCN) has been emerged as a new networking paradigm. In CCN, adaptive video streaming is one of the most promising technologies. However, rate adaptation and outbound face selection are the primary concern since a node cannot reliably estimate the end-to-end throughput. In this paper, we propose a strategy for outbound face selection considering both response time and bit-rate...
How to effectively distribute and share increasingly large volumes of data in large-scale network applications is a key challenge for Internet infrastructure. Although NDN, a promising new future internet architecture which takes data oriented transfer approaches, aims to better solve such needs than IP, it still faces problems like data redundancy transmission and inefficient in-network cache utilization...
Today's interdomain routing is traffic agnostic when determining the single, best forwarding path. Naturally, as it does not adapt to congestion, the path chosen is not always optimal. In this paper, we focus on designing a multi-path interdomain forwarding (MIFO) mechanism, where AS border routers adaptively forward outbound traffic from a congested default path to an alternative path, without touching...
OpenFlow is attractive as a base of the data center network. IPS is also attractive as a security appliance. Then combining Openflow with IPS is an important issue. The simple solution is to screening all flow in an OpenFlow network using IPS. However, it may degrade throughput performance or increase equipment cost. In order to solve this problem, we propose a novel IPS allocation scheme. In this...
Software-defined networking (SDN) has emerged as one of the future internet technologies. It separates the control plane and the data plane, keeping the data plane simple by assigning the complex computing to the control plane. Active queue management (AQM) has been researched to obtain lower delay and higher throughput. It is noteworthy to have these advantages in SDN. To bring AQM to SDN without...
Internet has grown very rapidly in the last couple of decades and still growing because of the expansion and utilization of various services and applications. Consequently, demand of delay and throughput sensitive services, like audio/video is also increasing. Information Centric Networking (ICN) is proposed as an architecture for the future Internet to meet the modern users and application requirements...
Network Neutrality states that users should have equal access to all Internet content and that Internet Service Providers (ISP) should not unfairly block or degrade access to any site. The Network Neutrality controversy has been in the spotlight for several years due to political, economic, social, and technical implications. While proponents argue that enforcing Network Neutrality by law is important...
We propose a routing protocol for drive-thru Internet access in delay tolerant vehicular networks. The contribution of this paper is two-folds. First, we propose a new approach which utilizes the concept of delay tolerant network (DTN) to supplement the conventional communication approach. Second, we propose an algorithm to schedule DTN transmissions in order to maximize the system throughput. The...
The Metropolitan Area of Caracas, Venezuela, has a geographical distribution such that almost every middle-class and wealthy neighborhood is located next to at least one barrio -- informal squatter settlements. We propose a Wireless Mesh Network (WMN) that exploits the urban geography of the city, so some poor families could gain access to the Internet via one or more Internet Service Providers contracted...
The transition period which should have brought the end of the IPv4 era has no clear end in sight. With about 3% worldwide deployment rate, IPv6 still looks like a promise and the IPv6 transition like an ongoing struggle. Among the many challenges introduced by this transition process to the Internet community, one of the most difficult is to ensure a scalable network design when using IPv6 transition...
High quality video streaming for mobile users is difficult to achieve in some areas of the world due to poor broadband capacity and sparse network coverage. We propose a bandwidth-sharing scheme to allow users with limited uplink bandwidth to borrow idle bandwidth from nearby access points and provide these users the opportunity to experience higher quality video than what their own bandwidth could...
Dense carrier sensing wireless networks are important scenarios to enable ubiquitous mobile Internet access. In this work, we study user experience from the end-to-end performance of dense p-persistent CSMA networks that suffers from operation interference among many non-coordinated APs. Results show that in dense networks, the effective coverage of APs shrinks and most STAs don't receive satisfactory...
A Wireless Internet-access Mesh NETwork (WIM-NET) provides the scalable and reliable internet access through the multiple access points (APs) and wireless relay communications. In particular, by redundantly deploying APs in the network field, the WIMNET becomes robust to the link or AP failure. However, these redundant APs increase the power consumption, and thus the number of active APs should be...
Next-generation wireless networks entail a high degree of flexibility, efficient use of available radio resources and an energy-efficient operation at low operational costs. They typically integrate use of technologies such as spectrum management, interference mitigation and management, and energy efficient technologies to deliver the broadband experience. This paper aims to project the 2020 broadband...
Poor data locality in high-speed networks leads to more memory accesses of connection management, which limits the throughput performance. In view of the above problem, this paper analyzed the process of connection management and access in detail, and put forward the efficient connection management solution to improve throughput on FPGA platform. This solution takes full advantage of the structural...
In this paper we characterize the impact of failures in Brazil's national research network (RNP) on traffic at a large client university. We analyze reachability disruptions, caused by failures of RNP's interdomain links, that block all international traffic. We also analyze performance disruptions, caused by simultaneous failure of multiple RNP intradomain links, which result in congestion and performance...
In content oriented application, such as P2P, a user does not care about where content is obtained and a content file can be downloaded from anywhere it is obtained. In some P2P systems, e.g. BitTorrent, a content file is divided into small parts, chunks, and each chunk is downloaded from anywhere. In this many-to-one communication style, one TCP session is set up for each pair of a sender and a receiver...
Increasing numbers of service providers have tended to use tens of geographically dispersed datacenters in recent years. Thus, a major unmet challenge is efficiently transferring data among multiple datacenters in different domains. Traditional single-path transfer mechanism based on BGP has limited reliability and low link utilization; therefore, multi-path inter-domain flow transfer mechanisms have...
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