Media Aware Network Element Data Plane Performance Evaluation

IFIP Advances in Information and Communication Technology, 2012

Recent advancements of IP networks pave the way for Over-the-Top (OTT) applications. Evolved telecom platforms provide revenue potentials via Service Gateways (APIs) on top of VoIP/RCS (IMS), Machine Type Communication (MTC) and Smart Bit pipe approaches. QoS is achieved through over-provisioning in today's access and core networks since there are no flexible mechanisms that are available for end-users to influence the QoS level. Processes for user-demanded and operator-controlled QoS management as well as mechanisms for applications signaling their requirements on the data path into the network are far from being adequate. Novel approaches regarding end-to-end inter-domain flow-control architectures, i.e. network slicing, as well as machine-to-machine (M2M) virtualization platforms that handle such functions as device/communication management, session management and bearer and charging management are emerging promising enhanced multimedia communications and efficient utilization of network resources. They promote cloud services and they integrate the computer word into next generation telecommunications.

IEEE Communications Magazine, 2014

Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 2009

The 3GPP are currently finalizing their Evolved Packet System (EPS) with the Evolved Packet Core (EPC) central to this framework. The EPC is a simplified, flat, all IP-based architecture that supports mobility between heterogeneous access networks and incorporates an evolved QoS concept based on the 3GPP Policy Control and Charging (PCC) framework. The IP Multimedia Subsystem (IMS) is an IP service element within the EPS, introduced for the rapid provisioning of innovative multimedia services. The evolved PCC framework extends the scope of operation and defines new interactions-in particular the S9 reference point is introduced to facilitate inter-domain PCC communication. This paper proposes an enhancement to the IMS/PCC framework that uses SIP routing information to discover signaling and media paths. This mechanism uses standardized IMS/PCC operations and allows applications to effectively issue resource requests from their home domain enabling QoS-connectivity across multiple domains. Because the mechanism operates at the service control layer it does not require any significant transport layer modifications or the sharing of potentially sensitive internal topology information. The evolved PCC architecture and inter-domain route discovery mechanisms were implemented in an evaluation testbed and performed favorably without adversely effecting end user experience.

2011 IEEE Symposium on Computers and Communications (ISCC), 2011

Internet. Emerging FI architectures should be able to fully support and facilitate all kinds of current and future mediaoriented applications. The architecture illustrated in this paper facilitates the deployment of an integrated Media Ecosystem, where all users can efficiently not only have access to, but also compose and share rich media services. This is achieved via a mesh of intelligent, media-centric home gateways ("HomeBoxes"), which utilize novel Content-Aware network overlays, developed on top of the existing transport infrastructures. This concept has been designed and is being implemented as an international pilot demonstrator in the frame of the EU-funded ICT project ALICANTE.

Lecture Notes in Computer Science, 2005

The paper presents a novel end-to-end seamless framework to support end-to-end Quality of Service and Traffic Engineering. The network model is based on the MPLS/DiffServ paradigm and addresses the definition of a network architecture according to both users and network providers requirements. A first solution relies on the centralized MPLS/DiffServ based Multi-protocol Access Inter-Domain (MAID) architecture. This architecture allows a seamless QoS-IP service setup through proper Users-Network Interfaces and inter-domain communication through Network-to-Network Interfaces. A fully distributed solution is also presented to address critical scalability issues and to improve network resilience. The overall architecture has been validated by means of functional tests carried out on operational testbeds based on Linux PC platforms.

OpenFlow is a Software Defined Networking (SDN) paradigm that decouples control and data forwarding layers of routing. In this paper, we propose OpenQoS, which is a novel OpenFlow controller design for multimedia delivery with end-toend Quality of Service (QoS) support. Our approach is based on QoS routing where the routes of multimedia traffic are optimized dynamically to fulfill the required QoS. We measure performance of OpenQoS over a real test network and compare it with the performance of the current state-of-the-art, HTTP-based multibitrate adaptive streaming. Our experimental results show that OpenQoS can guarantee seamless video delivery with little or no video artifacts experienced by the end-users. Moreover, unlike current QoS architectures, in OpenQoS the guaranteed service is handled without having adverse effects on other types of traffic in the network.

International Journal of Network Management, 2011

Management of long-distance, high-speed optical backbones spanning multiple administrative domains requires new solutions for challenging tasks. In particular, it is not trivial to negotiate, monitor and continuously enforce the required quality of service (QoS) for applications that span multiple domains. This paper proposes GigaManP2P: a novel peer-to-peer (P2P) management architecture for high-speed QoSaware backbones. GigaManP2P peers provide management services in a ubiquitous fashion through modules that interface with both the communication infrastructure and network users. In particular, we describe management services for on inter-domain QoS monitoring and resilient routing. After detecting a QoS constraint violation trend, a proactive rerouting strategy is triggered based on redundant virtual circuits, allowing both full and partial rerouting. The P2P overlay implementation is the basis for allowing transparent communication across autonomous systems. Experimental results showing the overhead of the P2P infrastructure in comparison to raw Simple Network Management Protocol, and the performance of the rerouting strategy, are presented.

2014

IP based multicast is considered as the most efficient way to deliver data to multiple receivers at the same time with preserving high throughput, and hence, most of the IPTV system exploits IP based multicast protocol to deliver content especially between Super head end often called root node and Regional Head end called local nodes. With this protocol, the data transmission paths are determined by multicast tree which is constructed and maintained by each network router in distributed manner. Since each network router has no holistic network view and it is not aware of the entire network status, even though some local nodes encounter a drastic packet loss due to the network congestion, the multicast tree will still be maintained, and this in turn causes waste of network resources. OpenFlow is one of the enabling technologies to manage and control a network in a centralized and programmable manner by considering the current network status. Therefore, in this paper we take advantage...

Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, 2012

The increasing demand for real-time multimedia applications for groups of users, together with the need for assuring high quality support for end-to-end content distribution is motivating the scientific community and industry to develop novel control, management and optimization mechanisms with Quality of Service (QoS) and Quality of Experience (QoE) support. In this context, this paper introduces Q-OSys (QoS-routing with Systematic Access), a distributed QoS-routing approach for enhancing future networks with autonomous mechanisms orchestrating admission control, per-class overprovisioning, IP Multicast and load-balancing to efficiently support multiuser multimedia sessions. Simulation experiments were carried to show the efficiency and impact of Q-OSys on network resources (bandwidth utilization and packet delay). Q-OSys is also evaluated from a user point-of-view, by measuring well-known objective and subjective QoE metrics, namely Peak Signal to Noise Ratio (PSNR), Structural Similarity (SSM) Video Quality Metric (VQM) and Mean Opinion Score (MOS).

The Content Aware Networking is an emerging architectural solution, responding to the significant increase in Internet content orientation. This paper is a continuation of a previous work and refines a management framework, for inter-domain peering in overlay Virtual Content Aware Networks (VCAN), QoS enabled, built over multi-domain, multi-provider IP networks. An overlay inter-domain topology service and negotiation protocols are defined in this paper, based on cooperation of the CAN Managers belonging to network domains. The scalability and efficiency is preliminary analyzed. The work is part of the research effort, inside a FP7 European Information and Communication Technologies (ICT) research project, ALICANTE, oriented to multimedia distribution based on CAN approach.