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Most load balancing techniques implemented in current data centers tend to rely on a mapping from packets to server IP addresses through a hash value calculated from the flow five-tuple. The hash calculation allows extremely fast packet forwarding and provides flow `stickiness', meaning that all packets belonging to the same flow get dispatched to the same server. Unfortunately, such static hashing...
The availability and reasonable cost of broadband Internet made it an attractive and favourable option to billions of users worldwide. Being a fast service also encourages its users to use real-time applications which is streaming and live data transfer includes VoIP and video streaming. The performance of such applications in Wireless Local Area Network (WLAN) may be highly affected by security protocols...
The recent trends in deploying multimedia systems, such as education, telemedicine, military and space endeavors is to deliver a smooth and uninterruptable video along with audio is a challenging task nowadays. The operators started using standard servers in the cloud. The internet based computing which provides more on-demand computing resources over the internet. Video Transcoding the method adapted...
In the traditional Publish/Subscribe (Pub/Sub) paradigm, most of the responsibilities lie with the broker, thus making it burdened. It also takes a considerable amount of time to first route the publications and subscriptions towards the broker, and then to further route the notifications to the subscribers. This leads to delays in data delivery. Besides delay and bandwidth consumption, the number...
Reverse proxies are key performance elements of a content distribution network (CDN) and operate as intermediaries between client and upstream (or origin) server traffic. A typical reverse proxy server aims to distribute user workload, more or less equally, among multiple upstream servers. To keep the pace with the growing demand for content, CDNs regularly expand their capacity by adding extra upstream...
Novel cloud computing technology makes multiplayer cloud gaming a reality, where players play games that do not run on local devices, but on servers in the cloud. Nevertheless, the necessary communication between player's local device and cloud server increases the response delay of the gaming session. Besides the degrade of responsiveness, the inter-player delay, which is the difference of response...
Network bandwidth and server capacity are gradually becoming overloaded due to high demand and rapid evolution of high quality multimedia services over the Internet. Internet Protocol Television (IPTV) is among the multimedia services that demand more of network and server resources, especially with the emergence of Mobile IPTV. It is imperative for service providers to maintain good quality management...
It is a paradigm shift in internet architecture from receiver centric model to the information centric networking (ICN) model to improve the end-users' latency experience. With exponential increment in number of users and data volume, efficient usage of the nodes (caches) and content forwarding methodology are key issues in an ICN architecture. In ICN intra-domain routers have storage capacity and...
Content distribution schemes for Video on Demand (VoD) systems, based on the peer-to-peer (P2P) technology, have attracted more and more attention. Recently, people mainly focus on the latency performance, security, interaction, scalability, and so on. We propose a new network topology model — Similarity Crossed Cube(S-CQ for short), which combines with the feature of crossed cube and establishes...
Internet has had offered plethora of services availed by the users either free of cost or at unimaginable price. Voice over Internet Protocol (VoIP) is also one of such boons provided by the net. It is a technique for transferring Voice (analog signals) over the Internet (packet switched based) using Internet Protocol (IP). Voice transmission through a non-circuit switched network rather than a dedicated...
The load balancing problem is one of an open issues for the cloud computing. A good load balancing mechanism enhances the performance of network processing, optimizes the use of resources, and ensures that no overloading a single node or link case. The existing load balancing cloud computing research mainly unilateral the fairness of the transmission network or stand only for the system. Hence, this...
Bandwidth is one of the characteristics that is used to measure network performance. In this paper, we present a Unicast Bandwidth Efficiency Routing Algorithm (UBERA) for mobile devices that are streaming video contents from a video server. The algorithm can adapt to different number of mobile devices with different level of mobility and different location. Routing decisions are based on the availability...
In IP multimedia subsystem (IMS), in order to have a multimedia service first a session should be established. The signaling part is done by the SIP protocol-the most important protocol used in IMS network. Excessive signaling during the session setup mechanism leads to an undesirable delay in session establishment and also the final response of the other subscriber. This matter is considered important...
The proliferation of cloud services makes virtualization technology more important. One important feature of virtualization is live Virtual Machine (VM) migration, which can be employed to facilitate load balancing, fault management and server maintenance etc. Two main metrics of evaluating a live VM migration mechanism are total migration time and downtime. The existing literature on live VM migration...
This paper presents the development of next generation e-learning systems for real-time video, voice conferencing and streaming technology over secure socket layer (SSL) IPv6 in campus environment. Development of the V2oIP e-learning systems has contributed a significant value to distance learning. The aim of this study is to design real time interactive learning systems with security over SSL IPv6...
Service discovery is an integral part in establishing an independent and self-organizing mobile ad-hoc network(MANET). In this paper a new distributed semantic service discovery scheme is proposed for MANET consisting of various mobile terminals. The proposed scheme based on the proactive routing protocol, Destination-Sequenced Distance Vector (DSDV), maintains the information on the network in the...
Quality of Service (QoS) based scheduling in Cognitive radio networks (CRN) is a pressing research problem. The objective of this work is to study the feasibility of using CRN for delay sensitive applications in the presence of primary users with random ON/OFF periods. The first contribution of this work is the modeling of a cognitive node as a Queuing system and characterization of the average delay...
Public health surveillance is the ongoing systematic collection, analysis and interpretation of health-related data. It serves as an early warning system for impending public health emergencies. This paper presents an efficient framework for automated acquisition and storage of medical data using the infrastructure provided by Short Message Service (SMS). The data to be collected are dynamically organized...
The paper describes a service model for cost-effective event reporting to clients over a wide-area network. The service provider (SP) maintains multiple protocol mechanisms to replicate the event pages at different proxy nodes of the distribution network. The mechanisms, which embody server-driven and client-driven replica update schemes to synchronize the page copies, reduce the access latency on...
The IP Multimedia Subsystem (IMS) seems to be the technology that will prevail in Next Generation Networks (NGN s), since the interworking environment and the service flexibility that this technology offers to the currently deployed wireless broadband technologies makes it appealing to users, service developers and network operators. In this paper a heterogeneous network model based on the IMS that...
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