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The latest experiences hint that the QoS (Quality of Service) approaches adopted by IMS (IP Multimedia Subsystem) technologies are still suffering from a primary containment factor due to the nondifferentiation between IPTV (Internet Protocol Television) video components. The success of IPTV services depends on how the customer perceives QoS related to the provided stream. The satisfaction of this...
The use of real-time multimedia applications in IP networks is continuously increasing with the services provided by the evolving internet infrastructure. Providing Quality of Service (QoS) is important for service providers in terms of real-time voice and video services to meet users' expectations. For this reason, QoS parameters such as network latency, jitter and packet loss must be accurately...
Providing proper technical solutions to cover all requirements of the Voice over LTE (VoLTE) service is still a great challenge for operators. Network monitoring is one of the important methods to support service verification, deployment and operations. The VoLTE service utilizes both the LTE Evolved Packet Core (EPC), and the IP Multimedia Subsystem (IMS). These architectures are built on different...
The Trafïîc Flow Description (TFD) option is an experimental option of the IP protocol, designed by the Authors, able to assure signaling for QoS purposes. The option is used as a carrier of knowledge about forthcoming traffic. If planning horizons are short enough, this knowledge can be used for dynamic bandwidth allocation. In the paper an analysis of QoS assurance using the TFD option is presented...
It is necessary to monitor the usage of network resources in the core network, and give the solution to avoiding network congestion problems. Congestion control method in Huawei's routers and switches is analyzed. Based on it, then a real-time network traffic analysis and quality of service management platform was designed. With four-tier architecture and five functional modules, the platform achieves...
This paper studies enhancement of Multi-Path TCP(MPTCP), which is one of new transport-layer protocols of TCP/IP protocol suites, by IP routing for improvement of Quality of Experience for a Web service (WebQoE). In order to confirm the effect of IP routing on WebQoE, the author performed experiments with subjects. In the experiment, the subjects assess Quality of Experience of two actual Web services...
The purpose of this research is to address the issue of enhancing the Quality of Service(QoS) in IP networks, to make it more optimal in a given network of networks using a novel approach. In this approach, QoS is provided to the packet even when the packet crosses its access network into the backbone. It proposes a new design or set of features in the routers which maps and translates the QoS provisioning...
In the current Internet system, there are many problems using anonymity of the network communication such as personal information leaks and crimes using the Internet system. As the study for solving this problem, there is the study of Policy Based Network Management (PBNM). This is the scheme for managing a whole Local Area Network (LAN) through communication control for every user. As one scheme...
We study the prototype for fine-grained bandwidth allocating managers (FGBAM) which allot communication bandwidth inside heterogeneous software-defined networks (SDN) based on user-defined policies. FGBAM can be beneficial in enabling Quality-of-Service (QoS) during both normal periods and disaster recovery time. FGBAM consists of two parts: the web-based front end and the back end for enforcing bandwidth...
Software defined networks (SDN) is perceived to have specific capabilities for utilization by network infrastructures automatically. The success of OpenFlow protocol is to decouple control plane from data plane completely. However, current SDN still regards the network as a group of devices rather than a holistic resource, and traffic monitoring and control only relies on network states but not including...
The Traffic Flow Description (TFD) is a new option of the IP protocol, designed by the Authors for Quality of Service (QoS) signaling. In contrast to the traditional, long-term, RSVP-based signaling, which is able to serve only static QoS assurance, the TFD option provides signaling on different time horizons, enabling dynamic QoS assurance. The TFD option conveys information about forthcoming traffic...
The video, voice, multimedia next-generation applications are using real-time data transmissions. Therefore, taking into account that all these applications are transmitted “over IP”, variable bandwidth has to be provided for specific situations in order to prevent network congestion. The active equipments meet these requirements and provide the network management. However, how will it be if the network...
There are hundreds of billions packets passing through the network, how to analyse these big data is an arduous task. In this paper we proposed a new scheme based on cluster algorithm to explore the backbone network traffic pattern. Two new traffic features are introduced to assist the analysing process. These two novel attributes can represent the flow effectively cooperated with a new flow similarity...
This paper proposes a technique to split a traffic in a software-defined network using a meter table. In general case, a different differentiated services code point (DSCP) number in a packet header is used to classify network traffic and provide quality of service (QoS). The traffic splitting technique uses a DSCP number as a split parameter. Once a packet exceeds a predefined traffic rate, the DSCP...
Direct (or D2D) communications allow two UEs to communicate without passing through the eNodeB. However, the two UEs may still need to relay their communication through the eNB from time to time, hence should be able to switch from the direct to the re-layed mode seamlessly, without this affecting the QoS. In this paper we show that in conventional systems a mode switching may cause relevant losses,...
Mobile communications have grown exponentially these last few years leading to an increasing demand. Software-Defined Networking appears to be a promising technology in order to provide flexible Quality of Service and very low latency. By modifying the 4G LTE architecture and integrating OpenFlow (SDN protocol) towards the 5G architecture, this new architecture promises to fulfill the requirements...
Information-Centric Networks (ICN) is a communication paradigm that promises to transfer the Internet from a host-to-host communication network to a massive information delivery system, capable of supporting the future needs of the users. ICNs are based on three main concepts: content forwarding, in-network caching, and multicasting. To realize these three key concepts, Software-Defined Networking...
In the last years, the Machine-to-Machine (M2M) communications evolved as one of the major trends shaping the development of services in the future Internet. The use of M2M technologies is rapidly increasing in different fields such as Health Care, Automotive, Energy, Consumer Electronics, manufacturing, security and Banking. With that rapid increase different protocols had been developed for M2M...
Mobile operators are today facing the daunting challenge of providing cheap and valuable services to ever more demanding customers. As a matter of fact, mobile standards have not yet really addressed this expectation of open, cheap and flexible web oriented internet access. As an alternative, we introduced an IP-centric QoS model mainly inspired by IP policies commonly found in fixed networks. In...
Connectivity clearly plays an important role in Internet of Things (IoT) solutions, and the efficient handling of mobility is crucial for the overall performance of IoT applications. Currently, the most widely adopted protocols for IoT and Machine to Machine (M2M) environments, namely MQTT, CoAP or LWM2M, are directly dependent on the TCP/IP protocol suite. This suite is highly reliable when using...
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