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检索条件"任意字段=International Conference on IP Multimedia Subsystem Architecture and Applications"

共 839 条记录，以下是91-100 订阅

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Broadcast the user chosen content over LTE in a simplified approach using evolved multimedia Broadcast Multicast Service (eMBMS) with optimized MCE scheduling algorithm

Broadcast the user chosen content over LTE in a simplified a...

引用

international conference on Intelligent Computing applications (ICICA)

作者： Damera, Baburao Babu, P. Chitti Bharathiar Univ Dept Comp Applicat Coimbatore Tamil Nadu India Annamacharya PG Coll Comp Studies Rajampet AP India

ISBN: (纸本)9781479939664

Mobile operators are slowly migrating towards all ip based packet data service of LTE to grab new business opportunity for the demand of end users. As per recent market survey, there would be 80% surge in the demand for data services by 2016 (6.6 million terabytes per month) especially for video on demand, live streaming apps, online gaming, webcast, file sharing ... etc. In this scenario, the existing resources may not be sufficient to serve the expected demand. One potential solution could be to fulfill the demand using eMBMS over LTE cell transmission. There is an opportunity for effective utilization of available bandwidth to deliver the required content with an optimal way using eMBMS. To provide these services, carriers are leveraging bi-directional networks using ip based packet technology like LTE. At present there are no commercial systems which can cater these services. The main objective of the proposed architecture is to address the future needs with few key optimizations. The proposed novel literature has multiple objectives. 1) Workable new architecture model to support eMBMS service in MBSFN area using multi-cell transmission 2) Achieve better performance when compared with the existing model using optimized MCE scheduling algorithm 3) Improve Signal to Noise Ratio (SNR) using multi-cell transmission, as cells are timely & tightly synchronized and can provide better quality of services to the users. 4) Users will have a choice to choose the desired content from User Equipment (UE) either through mobile apps or push messaging technology.

关键词： Long term Evolution (LTE) Evolved multimedia Broadcast Multicast Service (eMBMS) MBMS Coordination Entity (MCE) Multicast Broadcast Single Frequency Network (MBSFN) Broadcast Multicast Service Centre (BM-SC) MBMS Gateway User Equipment (UE) and Content Server (CS)

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Cloudified ip multimedia subsystem (IMS) for Network Function Virtualization (NFV)-based architectures 19

Cloudified IP Multimedia Subsystem (IMS) for Network Functio...

引用

ISCC 2014 Workshop - 5th IEEE international Workshop on Performance Evaluation of Communications in Distributed Systems and Web based Service architectures, PEDISWESA 2014

作者： Carella, Giuseppe Corici, Marius Crosta, Paolo Comi, Paolo Bohnert, Thomas Michael Corici, Andreea Ancuta Vingarzan, Dragos Magedanz, Thomas Technische Universität Berlin Germany Fraunhofer FOKUS Germany Italtel Italy Zurich University for Applied Sciences Switzerland

ISBN: (纸本)9781479942770

The maturity reached by virtualisation technology enabled great innovation for efficient applications and services development and delivery, independent of the underlying hardware equipment, especially with the large deployment of off-the-shelf hardware based cloud infrastructures. In order to take advantage of this technology, the existing network functions have to be developed and adapted to the new paradigm. However, traditional telecom services are still implemented on dedicated hardware resulting in high deployment and maintenance costs compared to the other already cloudified services. ETSI Network Functions Virtualisation (NFV) aims to fill this gap by applying to telecom the virtualisation technologies. This paper introduces a set of three software architectures for efficient virtualisation of ip multimedia subsystem (IMS) in different operator environments responding to the high level requirements of the ETSI NFV use case for virtualizing operator core network functions. Additionally, a management architecture for simplifying the deployment and runtime orchestration of such a virtual service on top of a cloud infrastructure is presented. Furthermore, one of the IMS software architectures was implemented based on the Fraunhofer FOKUS Open IMS Core, measured and evaluated on top of an OpenStack cloud. © 2014 IEEE.

关键词： Network function virtualization

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Fuzzy video streaming control in ip multimedia subsystem architecture

Fuzzy video streaming control in IP Multimedia Subsystem arc...

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international conference on Intelligent Systems: Theories and applications (SITA)

作者： Errais Mohammed Bellafkih Mostafa Rouayane Brahim Faculte des sciences AIN CHOCK CASABLANCA MOROCCO Networks laboratory INPT RABAT MOROCCO Faculte des sciences AIN CHOCK CASABLANCA MOROCCO RABAT MOROCCO

The INQA (IMS Network QoS architecture) approach offers several scenarios for IMS (ip multimedia Subsytem) monitoring as supervision and correction tools of services deterioration. The Platform INQA uses a set of entities and multitude technologies in monitoring. This requires deployment of considerable resources to carry out different scenarios and take more time in execution and processing. As solution, we propose in this work the integration of a new approach fuzzy logic-based. The approach optimizes costs by identifying for each situation, the appropriate scenario and related condition of service.

关键词： Quality of service Indexes Monitoring Packet loss Delays Artificial intelligence

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Cloudifying the 3GPP ip multimedia subsystem: Why and How?

Cloudifying the 3GPP IP Multimedia Subsystem: Why and How?

引用

New Technologies, Mobility and Security (NTMS)

作者： Roch Glitho CIISE Concordia University Canada

The 3GPP ip multimedia subsystem (IMS) has been specified as the service delivery platform of 3G networks. It subsequently became the de facto service delivery platform of 4G networks. Cloud computing is an emerging paradigm with inherent benefits such as scalability, elasticity and easy deployment of new applications and services. Scalability and elasticity are currently among the major roadblocks to the wide scale deployment of IMS. Cloudifying IMS can help in removing these roadblocks. It will also certainly bring many other advantages. However, this cloudification is no easy task and is still in its infancy. This paper motivates the cloudification of IMS, critically reviews the architectures proposed so far, sketches a vision and discusses the related research challenges.

关键词： Scalability Cloud computing Elasticity Computer architecture multimedia communication ip networks conferences

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Performance evaluation of a novel IMS-based architecture for LTE-WIMAX-WLAN interworking

Performance evaluation of a novel IMS-based architecture for...

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international conference on Engineering and Technology (ICET)

作者： Reem A. Hamada Hanaa S. Ali M. I. Abdalla Faculty of Engineering Zagazig University Zagazig Egypt

The next-generation heterogeneous networks aim to offer users of various networks seamless high quality ip-based multimedia services access anywhere at any time. IMS (ip multimedia subsystem) comes as a promising overlay service that provides a platform through which telecommunications operators can merge various networks to provide seamless data services. In this paper, we propose an architecture framework for interworking of the Worldwide Interoperability for Long Term Evolution (LTE), Worldwide Interoperability for Microwave Access (WiMAX) and Wireless Local Area Network (WLAN) technologies. The aim is the evolution of a seamless service provisioning heterogeneous networks. Thus, the proposed architecture extends IMS beyond 3G (UMTS) to 4G (LTE). The proposed LTE-WiMAX-WLAN tight coupled interworking is compared with the UMTS-WiMAX-WLAN tight coupled interworking. The two heterogeneous networks are simulated using OPNET Modeler 17.1. The performance metrices show that the proposed architecture outperforms the pervious architecture.

关键词： Wireless LAN WiMAX Protocols Delays Authentication multimedia communication Servers

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Interworking architecture between 3GPP IMS, Mobile ip and WiMAX in OPNET

Interworking architecture between 3GPP IMS, Mobile IP and Wi...

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international conference on Electrical, Electronics and System Engineering (ICEESE)

作者： Omar Arafat Mark A Gregory M. M. A. Khan School of Electrical and Computer Engineering RMIT University Melbourne Australia Department of Electrical Engineering University of Malaya Kuala Lumpur Malaysia

This article represents an interworking architecture model built by OPNET Modeler for intersystem handover between Worldwide Interoperability for Microwave Access (WiMAX), 3GPP IMS-Universal Mobile Telecommunications System (UMTS) and Mobile ip-General Packet Radio Service (GPRS). The interworking model implements ip multimedia subsystem (IMS) as a common platform at the application layer for session continuity and Mobile ip at the network layer for maintaining Internet Protocol (ip) mobility. A mobile device with three interfaces and having intelligence of initiating intersystem handover was designed which is capable of maintaining radio links simultaneously with the three access technologies mentioned above. The paper ends with some suggestions of further possible enhancements of the interworking architecture by OPNET Modeller.

关键词： WiMAX 3G mobile communication Ground penetrating radar ip networks Handover Data models

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Cloud Terminal Access and QoS Enhancement by Content Store and Service Load Classification in Named Data Network

Cloud Terminal Access and QoS Enhancement by Content Store a...

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international conference on Intelligent Information Hiding and multimedia Signal Processing (IIHMSP)

作者： Tin yu Wu Chun yu Hsieh Computer Science and Information Engineering National Ilan University I-Lan Taiwan

As one of the most popular topics in the Next Generation Network (NGN), Named Data Networking (NDN), a newly proposed network architecture centered on content data, targets on altering the existing communication protocol between Internet hosts. NDN uses data names rather than ip addresses for data transmission and re-designs the packet formats and the protocols between layers in order to substitute the conventional ip architecture. Quality of Service (QoS) in conventional ip network aims at bandwidth optimization in limited bandwidth network environments and bandwidth guarantees for specific applications, or user satisfaction of specific needs. To break away from traditional QoS, the next service-stack network attempts to reduce the total throughput and avoid data retransmissions over the network. Traditional QoS solutions are effective in ip networks but do not fit the needs of the NDN. Therefore, this paper defines the QoS parameters and measurements and also their impact on the NDN network performance.

关键词： Quality of service ip networks Computer architecture Routing protocols Delays Internet

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Secure Sip signalling service in IMS network

Secure SIP signalling service in IMS network

引用

international conference on Intelligent Systems: Theories and applications (SITA)

作者： Elmostafa Belmekki Brahim Raouyane Abdelhamid Belmekki Mostafa Bellafkih Faculty of Science and Technology Mohammadia Morocco Networks laboratory National institute of posts and Telecommunications Rabat Morocco

Securing service and signalization is an important aspect in the IMS network (ip multimedia subsystem). The signaling is based mainly on Sip protocol (Session Initialization Protocol). This protocol presents several challenges in terms of security which induce security problems in IMS network. The paper presents an analysis of Sip protocol and identifies the critical security weaknesses during registration phase. Indeed, during this phase, sensitive information is clearly exchanged by Sip entities which presents big risk because this information can be used in Sip security attack. So, the paper proposes an approach to improve Sip security by securing client registration in the Sip server.

关键词： Registers ip networks Servers Codecs Payloads Computer aided instruction Protocols

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Mobile-to-mobile multi-user chat service framework for operator networks

Mobile-to-mobile multi-user chat service framework for opera...

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IEEE international conference on multimedia Computing and Systems (ICMCS)

作者： Muzzamil Aziz Sharique Javaid Matthias Jarke Chair of Communication and Distributed Systems RWTH Aachen University Aachen Germany

In past few years, the concept of mobile servers has emerged dramatically. That means the mobile nodes have now gained such extraordinary processing powers and storage capacities that they can actively play a role of service delivery platforms in the service oriented paradigms. Recently, a concept of Mobile Application Servers (Mob-ASs) has been introduced by the research community in order to promote M2M (Mobile-to-Mobile) service networks over the telecom operator networks. Such joint-venture of IT and Telco systems will bring a plethora of new M2M applications in the market. This paper presents the design and evaluation of an M2M chat service framework for an existing Mobile Server Platform (MSP). The existing MSP has the capacity to register itself as a Mobile Application Server (Mob-AS) and a Mobile Application Client (Mob-AC) in the operator's IMS (ip multimedia subsystem) network. Featuring the MSP with the chat service framework will facilitate the mobile users to exchange short and long text messages and multimedia files over the operator network without using any third-party services.

关键词： Mobile communication Mobile computing ip networks Quality of service Image color analysis

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A Framework of Educational App Repositories with Recommendation Powered by Social Tag Mining

A Framework of Educational App Repositories with Recommendat...

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international conference on Information Science and applications (ICISA)

作者： Wen-Chung Shih Department of Applied Informatics and Multimedia Asia University Taichung Taiwan

Existing remedial instruction focuses on teacher-oriented or self-learning approaches. However, we think that the tutor-based approach with the support of educational repositories can provide students with an opportunity to correct their misconceptions. In this paper, the architecture is proposed to help users find suitable educational apps in repositories for the purpose of Math tutoring. The proposed recommender subsystem is combined with a social tagging mining approach. Evaluation results indicate that despite the need for further improvement, the tutoring method with the educational repositories is promising for remedial instruction.

关键词： Tagging Data mining Mathematics Educational institutions Recommender systems Learning systems Taxonomy

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