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The Stream Control Transmission Protocol (SCTP) supports multiple streams to minimize the performance degradation due to head-of-line blocking. Among several streams transmitted simultaneously, some stream may require smaller transmission time than the others. However, the current SCTP provides no facility for controlling the access frequency of respective streams. This paper proposes a new scheme...
The IP Multimedia Subsystem (IMS) is a standard network technology merging voice, data, and multimedia services. IMS is well integrated with existing voice and data in wire and wireless networks. To ease the integration with the Telecom and Internet networks, IMS use SIP (Session Initiation Protocol). The main components of IMS are CSCF's and HSS servers. They are responsible of processing and routing...
This paper will discuss about transmission of multimedia content in limited capacity network (up to 5 Mbps), especially to study about the impact of background traffic towards multimedia content delivery quality in a limited capacity network. Observation methods proposed in the study include measurement of limited capacity network, background traffic modeling, and simulating the network to observe...
Mobile-Ad-Hoc network is a spontaneous, self configurable network consisting with multiple mobile nodes. All the nodes that are communicating in network acts like router and follow a random, ever-changing topology for sharing data on any scalable scenario. Due to this ever-changing network topology, one of the challenging tasks in multimedia ad-hoc network is to provide Quality of Services (QoS) during...
Mobile nodes in a robust and challenging network scenario of Mobile Adhoc Network (MANET) are autonomous with self-configurable capability due to high frequency of topology change and unpredictable rearrangement of the network components during data transmission. Due to ease of set up , the vigorous networking system in MANET is very successful in conditions where it is difficult to create infrastructure...
Nowadays Vehicular Ad hoc Networks is one of the most promising application areas of the wireless networks, able to organize without predefined infrastructure. In particular, the transmission of video data in the ad-hoc represents a major issue due to the immense enrichment by the video information of the quality of experience perceived by the user and knowledge of the environment in many applications...
The IP Multimedia Subsystem (IMS) enables the convergence of voice, data, and multimedia services. IMS is well integrated with existing voice and data networks, while adopting many of their key characteristics. SIP (Session Initiation Protocol) provides a pathway to build a single unified network, bridging the gap that previously existed between the once-separated Telecom and Internet networks. The...
Multimedia conferencing is the conversational exchange of multimedia content between multiple parties. It has a wide range of applications (e.g. Massively Multiplayer Online Games (MMOGs) and distance learning). Many multimedia conferencing applications use video extensively, thus video mixing in conferencing settings is of critical importance. Cloud computing is a technology that can solve the scalability...
Providing guaranteed services in the Internet has become extremely essential to fulfill the requirements of the Internet users. With an increase in the number of users and demand for multimedia applications like video streaming, VoIP and video conferencing, larger bandwidth requirement increases drastically since such applications are very sensitive to delay, packet loss, and jitter. In such an environment,...
This paper proposes a new cross-layer based packet scheduling scheme for multimedia traffic in Long Term Evolution (LTE)/LTE Advanced (LTE-A) network. The effective use of the limited resources still remains a major challenge in mobile networks across the globe. A dynamic user scheduling scheme is very important towards actualizing an effective utilization of the limited available resources in LTE/LTE-A...
Real-time applications over wireless networks often suffers from jitter, delay and packet loss. The traditional techniques for error control are FEC (Forward Error Correction) and ARQ (Automatic Repeat Request). In this paper a hybrid FEC/ARQ mechanisms with limiting the slots number between the loss of the last retransmission of the original block n and the reception of block n + φ is analyzed in...
This paper proposes a hybrid scheduling scheme to combine the priority queueing and Packet General Processor Sharing (PGPS) algorithm for Multimedia Cloud Services in Software Defined Network (SDN). The network calculus theory is employed to develop modeling and analysis techniques for evaluating the QoS performance of the proposed scheduling scheme. Both analytical and numerical results obtained...
Wireless multimedia sensor networks (WMSNs) is one of the hotest topic nowadays which attracts more and more researchers as being an interdisciplinary research interest. Its cost decreases continously due to advances in micro-electromechanical systems, and the proliferation and progression of wireless communications. However, the transmission of multimedia information must satisfy QoS criteria which...
The quality assessment of multimedia services as perceived by the end-user is a challenging task. In a controlled environment, it is easy to measure the user's Quality of Experience (QoE) against the influence of controlled network parameters. However, in an uncontrolled environment, it is difficult to measure the Quality of Service (QoS) perceived by end-users, due to the unpredictable behaviour...
IP Multimedia Subsystem (IMS) has been standardized by 3GPP/3GPP2 to provide essential services to users of the 4G and beyond. Its capabilities to scale and integrate with Next Generation Network (NGN) has given IMS widespread applicability in the Next Generation Networks (NGN). IMS relies heavily on SIP (Session Initiation Protocol) to insure initialization, negotiation and termination of services...
The limited energy resources of sensor nodes pose challenging issues on the development of protocols for WSN. Introducing clustering into hierarchical protocol reduces number of transmission in the network to reduce their energy deception, then to maximize network lifetime. But the LEACH case is not really reliable in the case of real-time traffic because real-time applications are characterized by...
The ever-increasing demand for multimedia surveillance and monitoring has led to the deployment of wireless sensor networks capable of capturing multimedia contents along with the scalar data. However, most of the routing protocols designed for wireless sensor networks (WSNs) are meant only for homogeneous sensor networks in which all sensor nodes have same capabilities in terms of communication,...
The field of wireless multimedia sensor networks (WMSN) is attracting more and more research community as an interdisciplinary field of interest. This type of network is low-cost, multifunctional due to advances in micro-electromechanical systems, and the proliferation and progression of wireless communications. However transmit multimedia information captured must satisfy the criteria of QoS , which...
In the existing IEEE 802.11e standard, all VoIP sessions contend within the same prioritization Access Category (AC), despite potentially having very different, and varying one-way (M2E - Mouth to Ear) delays. In this paper we show how VoIP endpoints that are time synchronized can help optimize 802.11e EDCA in order to prioritize VoIP sessions that have relatively large M2E delays and thus distinguish...
With rapid development of microelectronics and low-cost cost multimedia hardware, Wireless Sensor Networks (WSNs) have started to evolve into Wireless Multimedia Sensor Networks (WMSNs), where the emphasis is given on acquisition, processing and transmission of multimedia content through WSN. While the idea of multimedia sensor networks has been existing for some time, very little research is performed...
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