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Autonomous management of a multi-tier Internet service involves two critical and challenging tasks, one understanding its dynamic behavior when subjected to dynamic workload and second adaptive management of its resources to achieve performance guarantees. In this paper, we propose a statistical machine learning based approach to achieve session slowdown guarantees of a multi-tier Internet service...
Ever increasing demand for more bandwidth over the Internet has lead to the development of many new technologies and architectures. Among these, Hybrid of Wireless and Optical networks have become increasingly important because of their “mobility” and “flexibility” in the wireless part and “robustness” and “high capacity”...
We develop a protocol through which multipath enabled IP routers collectively engage in dynamic traffic engineering, to optimize performance in concert with legacy TCP congestion control. We build on recent theory which shows a globally optimum resource allocation across the TCP/IP layers can be achieved through control of rates and multipath routing fractions following a consistent congestion signal...
IEEE 802.16d standard defines WiMAX Mesh mode, which uses Centralized Scheduling (CS), Distributed Scheduling (DS), and co-existence of CS/DS data subframes to allocate resources for data transmissions. The CS and CS/DS schemes are suitable for Internet traffic, but the lack of spatial reuse in over-pessimistic use of CS causes scalability problems and bandwidth limitations. In this paper a Hybrid...
With the deployment of more and more resilience-critical Internet applications, there is a rising demand for multi-homed network sites. This leads to the desire for simultaneously utilising all available access paths to improve application data throughput. This is commonly known as Concurrent Multipath Transfer (CMT); approaches for several Transport Layer protocols have been proposed. Combined with...
Emerging Peer-to-Peer (P2P) technologies have enabled various types of content to be efficiently distributed over the Internet. Most P2P systems adopt selfish peer selection schemes in the application layer that in some sense optimize the user quality of experience. On the network side, traffic engineering (TE) is deployed by ISPs in order to achieve overall efficient network resource utilization...
HSPA (High Speed Packet Access) technologies have become an attractive solution for broadband wireless Internet access. This article evaluates the quality of service experimented by one HSPA user in the presence of multiple terminals sharing the cell capacity. The study focuses on Web traffic and includes analytical and simulation results, providing a basis for dimensioning and admission control in...
As an all-IP network provides not only services that have been traditionally provided on the Internet but also many other services, it has a dramatically higher risk than conventional networks that an occurrence of congestion in one service leads to congestion in other services. Unlike conventional networks, an all-IP network should provide not only bandwidth but also processing ability simultaneously...
The future Internet is envisioned to host a large number of virtual networks managed by different operators sharing the same physical infrastructure. In such a scenario, an operator may not even own physical resources as such, but lease virtual resources to have their own virtual networks. While control-plane virtualization with several routing instances becomes common in equipments, the data plane...
Structured P2P system doesn't consider the actual physical topology when building the logical overlay, which would cause a serious mismatching between logical overlay network and physical network and affect the routing performance of the system. An advanced algorithm of K-bucket updating strategy base on structured Kademlia system was proposed. Using Landmark Binning algorithm and RTT detection will...
The traditional formulation of the total value of information transfer is a multi-commodity flow problem. Here, each data source is seen as generating a commodity along a fixed route, and the objective is to maximize the total system throughput under some concept of fairness, subject to capacity constraints of the links used. This problem is well studied under the framework of network utility maximization...
The hybrid application layer multicast (ALM) has been shown its efficiency by leveraging the conventionally main structures of application layer multicast, tree-based and mesh-based. However, how to select the proper node to construct the overlay and how to establish the connection between any two nodes are still unsolved. Therefore, this paper is to design a novel construction algorithm for the hybrid...
A load balancing algorithm functioning as an extension to the topological routing scheme is proposed. The algorithm is designed to evenly distribute the traffic load in a 4-regular grid network. This is done by letting each node calculate how loaded it is with regular intervals and feed this information to its neighboring nodes, which then use it to derive link probabilities applied in probabilistic...
A quality of service framework is a fundamental component of a 4G broadband wireless network for satisfactory service delivery of evolving Internet applications to end users, and managing the network resources. Today's popular mobile Internet applications, such as voice, gaming, streaming, and social networking services, have diverse traffic characteristics and, consequently, different QoS requirements...
Cloud data centers (CDCs) provide key infrastructure for cloud computing. Allocating computing resources is very important for the CDCs to function efficiently. Current allocation of resources in CDCs is mostly dedicated and static. However, workloads for cloud applications are highly variable which cause poor application performance, poor resource utilization or both. In this paper, adaptive dimensioning...
In this paper, we present a system that optimally and dynamically allocates the available computing resources to virtual machines that support virtual collaboration environments. Such environments are emerging fast via on-line social networks, virtual worlds, and the "Web 3.0" or "collaborative Web" paradigm. We use a utility-based framework to differentiate the applications hosted...
For the emerging concept of network virtualization where a multitude of virtual networks (VNs) coexist, the main challenge is to isolate and control the resources allocated for individual virtual networks. Realizing such resource allocation requires deliberate design of the router enhanced specifically for handling a large number of virtual network flows. This paper discusses fundamental challenges...
The server mirroring method has extensively used as the technology for contents delivery networks. Several mirror servers that serve same contents are located in a network, and an access is navigated to one of the mirror servers based on the delay time and the load balance. The location of the mirror servers with high reliability against a failure and small delay times of accesses is important. In...
In order to solve task scheduling and load balancing problems of distributed search engines, a GNP-based scheduling strategy for distributed crawling and a load balancing method are proposed in this paper. Internet distance estimating mechanism is adopted as a replacement for large-scale network distance measurement, which not only improves response speed of the system, but also reduces loads on WAN...
As part of the resource allocation mechanisms, each router must implement some queuing discipline that governs how packets are buffered while waiting to be transmitted. Various queuing disciplines can be used to control which packets get transmitted (bandwidth allocation) and which packets get dropped (buffer space). The queuing discipline also affects the latency experienced by a packet, by determining...
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