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Recently the increasing use of IP networks, their applications and users requires an increasing amount of networking resources. Therefore, organizations require the guarantee of bandwidth transmission for critical applications for network users, i.e., a guaranteed quality of service. In this contribution we present a decision based model for networking that priors the critical data flow in an organization...
On QoS of live broadcast, proposes an congestion control strategy based on multicast transmission for terminals, i.e. the sender adopts RTP/RTCP adaptive control strategy, and variable increase and decrease method is used to adjust sending rate, while the receiver sets the buffer to adjust the data to play order of playback and to maintain the matching rate and effective bandwidth at the same time...
Optimizing memory system performance is critical for delivering high system performance for multimedia applications since they are usually memory intensive. As the number of IP cores in a multimedia MPSoC (Multi-Processor System-on-Chip) continues to increase, system performance will be eventually limited by the memory system. In this paper, we tackle the memory performance issue of multimedida MPSoCs...
To exchange medical data between two distant locations is of paramount importance in a significant number of scenarios (emergency, developing countries, home care, training, etc.). This paper presents performance evaluation, through emulation and using real medical equipment, of a Telemedicine application including Electro-encephalographic (EEG) data, audio, video and text. All the application flows...
EPS including Long Term Evolved (LTE) and Evolved Packet Core (EPC) has been accepted as the architecture of the next generation advanced mobile telecommunication network in the future. QoS in EPC is an important mechanism to provide guaranteed service to users. However, current QoS in EPC mainly based on barrier identification, resulting in complicated and forgetful QoS negotiation and updating process...
Multiprotocol Label Switching (MPLS) is an Internet Engineering Task Force (IETF) specified framework that provides for the efficient designation, routing, forwarding and switching of traffic flows through the network. MPLS is a versatile solution to address the problems faced by present-day networks like speed, scalability, quality-of-service (QoS) management, and traffic engineering. MPLS carries...
This project is to simulate the Voice over Internet Protocol (VoIP) over IEEE 802.11b and 802.11e WLANs (Wireless Local Area Network) with different Coder-Decoder (CODECs) by using Network Simulator-2 (NS-2). The main objectives of this project are to analyze the VoIP of Mean Opinion Score (MOS), throughput and packet drop rate. The simulation is conducted using different CODECs (G.711, G.729A and...
Internet usage has changed, and the demands on the broadband access networks have increased, both regarding bandwidth and QoS. Characterizing the traffic, as seen by a broadband access network, can help understanding both the demands of today and the demands of tomorrow. In this paper we analyze traffic measurements from a Swedish municipal broadband access network and derive corresponding user behavior...
In wireless heterogeneous environment, the integration of wireless access network will be accomplished by seamless handover which contains many challenges i.e. service mobility, vertical handover, common authentication, unified accounting/billing, security mechanisms, QoS and service provisioning, etc. Toward this direction, our research aims to provide a complete integration of heterogeneous network...
One of the major challenges for next-generation mobile systems is to achieve efficient mobility management in next generation wireless networks. To track host mobility, Mobile IP setup a tunnel between the Home Agent and the Mobile Node. This paper proposes a new architecture called LinkWork Mobile MPLS which takes advantage of MPLS traffic engineering capability, to achieve fast-reroute when a mobile...
In the IMS-based NGN service platform, live streaming is an important value-added service. But the distribution of streaming media is a difficult problem because of its massive bandwidth requirement and real-time requirement. Since IP multicast needs to update the whole network routers, this paper introduces P2P technology into live streaming system, which leverages the IP-based policy control and...
IPv6 has a good support to IP quality of service. A flow label field is defined in IPv6 header to help control IP quality of service (QoS), but how to design and allocate flow label in IPv6 forwarding router and then design framework of router is still one of key problems of IPv6 network to provide reliable service and to guarantee QoS. The paper introduced concept and characteristics of IPv6 flow...
In this paper we describe a new service that allows multimedia sharing between UPnP terminals connected to remote networks. The service grants the confidentiality of users' contents since they are still stored in the home network. Our approach uses IP Multimedia Subsystem (IMS) framework to establish a secure HTTP session between remote devices. A new Remote Access Application Server is deployed in...
IPv6 has gained its common sense as a fundamental IP instruction for the next generation network with larger address space with better QoS (Quality of Service) service. The IPv6 FL (flow label) is a function that, as it was designed, can be a big help in alleviating QoS problem from flow level treatment. However, the original design of FL can easily induce scalability problem and it has not been used...
Anycast is a new “one-to-one-of-many” communication method in IPv6. By taking advantages of anycast paradigm and evolutionary algorithm, an efficient anycast routing algorithm for load-balancing based on evolutionary algorithm is proposed in this paper. A new approach of initializing population is presented that the initial population is related to the load of anycast group, thus the diversity of...
For ad-hoc home networks without central coordinator, IEEE 802.11 systems merely support service differentiation. In many usage scenarios of a typical home network with applications requiring a strict quality of service (QoS), this MAC functionality is not sufficient. In order to counteract this problem, we developed in previous works a modified MAC scheme based on the IEEE 802.11 enhanced distributed...
In this paper, the technology of trusted boundary based on port trust value is discussed. When IP phones are connected to the existing switch-based campus area network, PC is connected to the access port of IP phone. To avoid IP phone is disconnected from the network and PC is directly into the switch port, trusted boundary based on port trust value is applied. In an IP PBX, trusted mode or untrusted...
Surfing the Web is a practical task that is being used in activities that range from bank transactions to entertainment. Web technology is advancing in order to provide its users with better quality and advanced features. Based on networking parameters, Internet Service Providers (ISPs) want to ensure better Quality of Service for their customers. However, a question arises concerning the assessment...
This paper presents an idea in the context of multicasting: it is to manage QoS with a certain level of hazard. The Xcast and IPv6 are used in the context of IPTV which is a contestable choice since the number of user could be high regarding the size of the packet header. In large IPTV network, even an IPTV stream with a small number of subscribers could have hundreds of them. Moreover if Xcast stream...
The Internet Protocol (IP) architecture is very flexible and allows the transmission of any type of service over it. This is one of the main advantages when it is used for video transmission. IPTV service is currently one of the hot topics where industry and academia is providing their efforts and obtaining significant results. The next big step is to serve stereoscopic (3D) video and 3D-TV over IP...
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