Showing papers on "IP Multimedia Subsystem published in 2011"

Network media device

Abstract: A network media device is described that pulls multimedia data from one or more sources (e.g., a multimedia website or a multimedia server computer) at a first time, stores it to long-term storage within the device and transmits the stored multimedia data to one or more designated multimedia playback devices at a second time.

Methods and Apparatus for Enabling Access Transfer of an Emergency Call Back Session

Abstract: According to an embodiment of the present invention there is provided a method of enabling Single Radio Voice Call Continuity, SRVCC, access transfer for an emergency call back IP Multimedia Subsystem, IMS, session to a user equipment, UE. The method comprises including a session continuity function in a signalling path of a request for establishment of a call back session intended for the UE, and if access transfer of the call back session from a packet switched access to a circuit switched access is required, implementing SRVCC access transfer of the call back session using the session continuity function.

Internet of Things and Cloud Computing for Future Internet

Abstract: Currently, Internet of Things (IoT) and Cloud Computing are the hottest issues of Future Internet. The IoT is the most important concept of Future Internet for providing a common global IT Platform to combine seamless networks and networked things. Cloud Computing provides backend solution for processing huge data streams and computations while facing the challenges of everything will be connected with seamless networks in the future. However, there is a lack of common fabric for integrating IoT and Cloud. In telecommunications, the IMS (IP Multimedia Subsystem) based on the All-IP and Open Services Architecture has been regarded as the trend for Next Generation Network (NGN). We believe that the IMS communication platform is the most suitable fabric for integrating IoT and Cloud. In this study, we will provide the discussion of open challenges and possible solutions for Future Internet.

A context-aware service architecture for the integration of body sensor networks and social networks through the IP multimedia subsystem

Abstract: In this article a new context-aware architecture is proposed for the integration of body sensor networks and social networks through the IP Multimedia Subsystem. Its motivating application scenarios are described. The benefits and main research challenges for an efficient communication using the proposed architecture are outlined.

IMS cloud computing architecture for high-quality multimedia applications

Abstract: A novel IP Multimedia Subsystem (IMS) framework with cloud computing architecture is proposed for use in high-quality multimedia applications. The IMS supports heterogeneous networking with Quality-of-Service (QoS) policy. MapReduce analysis is also used to enhance cloud computing capability. This architecture enables users to access high-quality multimedia applications via Android-based appliances. In this study, the IMS QoS policies of three wireless access technologies, 3G, WiFi and WiMAX, are integrated in a cloud computing environment to provide different services such as VoIP services and video streaming services. Experimental results indicate that the proposed mechanism improves system performance by allocating resources according to service priority. The proposed architecture also significantly improves system capacity to accommodate numerous users.

Method and device for realizing ip multimedia subsystem disaster tolerance

Abstract: A method for realizing an Internet protocol (IP) multimedia subsystem (IMS) disaster tolerance includes the steps as follows. An S-CSCF receives a user registration, and backs up necessary data which is required when a user service processing is restored on a storage entity in a network. An I-CSCF of user's home domain receives a service request of the user, and if it is found that the S-CSCF currently providing a service for the user fails, assigns a new S-CSCF to the user, and forwards the service request to the newly assigned S-CSCF. The newly assigned S-CSCF interrogates and acquires subscription data of the user and the necessary data backed up by the original S-CSCF from the storage entity, and then restores the user service processing according to the subscription data and the backup data. A device for realizing an IMS disaster tolerance is also provided.

Transaction-Pattern-Based Anomaly Detection Algorithm for IP Multimedia Subsystem

Abstract: The Internet Protocol (IP) multimedia subsystem (IMS) plays an important role when migrating to next-generation networks. Based on the all-IP network architecture, at least an IP address is assigned to user equipment for communication. It thus brings not only value-added services, but also security issues such as attacks and threats from traditional IP networks. This paper proposes a novel scheme to detect the anomaly attempts or attacks in an IMS core network. Our proposed scheme adopts the support vector machines (SVMs) technique as our data-mining module. We also utilize the high-order Markov kernel to enhance the detection and prediction rate in sequence calls. Furthermore, the detection algorithm and feature selection for SVM kernel are designed by utilizing IMS transaction patterns. It is proved that the proposed algorithm can efficiently filter out the anomaly attempts in an IMS core network.

Using non-ims connections in ims sessions

Abstract: Systems and methods can be implemented for IP multimedia subsystem (IMS) resource reservation. A first electronic device can transmit, through an IP network, a non-Session Initiation Protocol (SIP) message to an application server in an IMS network, where the non-IMS SIP message includes a request to initiate an IMS communication session through the IMS network with a second electronic device. A SIP message can also be transmitted through the IMS network to the application server that initiates a SIP INVITE session between the first electronic device and the application server, where the SIP INVITE session is routed through the IMS network. The first electronic device can then, receive a SIP response message that identifies a resource reservation for the IMS communication session from the application server.

Recent advances in multimedia networking

Abstract: In recent years, the ubiquity of multimedia services along with the proliferation of mobile devices and the demand for new audio and video applications are changing the life style of users. User demands for multimedia access anywhere, anytime from any device are creating new challenges for research communities from both academia and industry. It is expected that video-based services alone will account for 50 percent of all consumer network traffic in 2012 and we will continue to witness the explosive growth in users sharing multimedia content over the Internet. In this context, new network, application, and user-based approaches must be created to deal with such complex multimedia systems. This paper presents some of the recent advances in multimedia networking focusing primarily on areas that have been receiving attention recently and are expected to continue to generate further interests in coming years. These areas include Quality of Experience (QoE) and various related standardization issues, Content Distribution Networks (CDNs), multimedia communications, mobile Multimedia. This paper also briefly highlights some of the major challenges that still need to be addressed to enable the support and delivery of multimedia services anywhere, anytime over highly heterogeneous infrastructures and user terminal devices.

Internet of things and cloud computing for future internet

Abstract: In recent years, Internet of Things (IoT) and Cloud Computing are the hottest issues of Future Internet. The IoT is the most important concept of Future Internet for providing a common global IT Platform to combine seamless networks and networked things. Cloud Computing provides backend solution for processing huge data streams and computations while facing the challenges of everything will be connected with seamless networks in the future. However, there is a lack of common fabric for integrating IoT and Cloud. In telecommunications, the IMS (IP Multimedia Subsystem) based on the All-IP and Open Services Architecture has been regarded as the trend for Next Generation Network (NGN). We believe that the IMS communication platform is the most suitable fabric for integrating IoT and Cloud. In this study, we will provide the discussion of open challenges and possible solutions for Future Internet.

IoT-IMS Communication Platform for Future Internet

Abstract: In recent years, Internet of Things (IoT) and Cloud Computing are the hottest issues of Future Internet. However, there is a lack of common fabric for integrating IoT and Cloud. In telecommunications, the IMS (IP Multimedia Subsystem), based on the All-IP and Open Services Architecture, has been regarded as the trend for Next Generation Network (NGN). The IMS communication platform is the most suitable fabric for integrating IoT and Cloud. This paper focuses on different aspects including Cloud Service Framework, Data Sensing and Communication Technology, Collaborative Authentication and Privacy Protection Mechanism, Operation, Administration, and Maintenance (OA&M), Mobility and Energy-Saving Management, and Application Services. This paper not only provides the discussion of open challenges, but also proposes a possible solution based on the above-mentioned aspects for Future Internet.

QoE-Driven Sender Bitrate Adaptation Scheme for Video Applications over IP Multimedia Subsystem

Abstract: IP Multimedia Subsystem (IMS) offers a framework which enables the provisioning of multimedia services with Quality of Service (QoS) and mobility support across heterogeneous networks. The aim of this paper is twofold. First, to present a new fuzzy logic based Sender Bitrate (SBR) adaptation scheme at pre-encoding stage that is Quality of Experience (QoE) driven for video applications. The scheme was tested and evaluated in the NS2 based simulation access networks of third generation Universal Mobile Telecommunication System (UMTS) networks. Second, to demonstrate the implementation of the proposed adaptation scheme in our developed open Android-based IMS test bed. The test bed was developed to fully understand and manipulate the effects of network conditions on perceptual quality. The SBR adaptive scheme is evaluated in terms of the Mean Opinion Score (MOS). Extensive simulation and test bed results demonstrate the effectiveness of the proposed adaptation scheme especially at UMTS bottleneck access networks where perceived video quality is most affected. The proposed scheme was responsive to available network bandwidth and congestion and adapted the SBR accordingly maintaining acceptable quality in terms of the MOS. The proposed scheme has applications in network planning and content provisioning for network/service providers.

A method and system for remote control of home electrical appliance devices

Abstract: The utility model relates to a method and system of remote control for home appliance, an session initialization protocol called SIP signaling is constructed and sent to an IP multimedia subsystem by a user terminal, the SIP signaling comprises attribute information of the home appliance which is required to communicate with the user terminal, operational information which is to be implemented tothe home appliance and home gateway mark; then the user terminal is judged by the IP multimedia subsystem to show whether the user terminal accords to the initial filtering rule of the home gateway settings or not, if accords, then the home gateway can be found according to the home gateway mark, the SIP signaling is forwarded to the home gateway; the home appliance in home domain which accords with conditions can be found by the home gateway according to the attribute information in the SIP signaling, then the home appliance is operated according to the operational information. The utility model has an advantage that users can use various terminals which support IP multimedia subsystem to access home network at anytime and anywhere, getting optimal and colorful user experience.

Routing terminating calls

Abstract: A subscriber server routes a terminating call in a network that includes a circuit switched (CS) network, a packet switched (PS) network, and an IP Multimedia Subsystem (IMS). The server receives a request for routing information in relation to the terminating call from a CS node in the CS network. A determination is made at server based on whether a UE associated with the terminating call is registered in the IMS and the UE has access to the PS network. The server instructs the CS node to route the terminating call in the CS network when the UE is not registered in the IMS or when the UE does not have access to the PS network. The server instructs the CS node to send the terminating call to the IMS for handling when the UE is registered in the IMS and when the UE has access to the PS network.

An ontology-based context inference service for mobile applications in next-generation networks

Abstract: Context enabled mobile applications are considered to provide a richer experience and to enhance the user interaction by acquiring information that allows the identification of the user's current situation. Modern context inference infrastructures can source, process and deliver user information. However, a commercialization towards a context service has still been prohibited by the need for global service coverage and accurate context identification. With the advent of Next Generation Networks, telecom operators can leverage All-IP networks to design external service interfaces that integrate a diverse set of sources and context inference processes that are easily scalable, extendable, and robust at the same time. This article presents a telecom operator service that supplies mobile applications with context information to illustrate how context infrastructures can leverage NGN capabilities. The article introduces an innovative context inference approach involving third Party applications within the inference process itself. This is done by structuring the ontology context model in layers of complexity and inferring particular context information via modules, which are designed in collaboration with third party developers. Furthermore, the service is compliant with state-of-the-art IP Multimedia Subsystem infrastructures and provides an interface that uses HTTP/SOAP and HTTP/REST communication as well as the Session Initiation Protocol of the IMS. A first proof of concept indicates an increased service adoption, a higher accuracy of context, and an increased robustness towards errors.

Providing user location and time zone information for lte/ims charging

Abstract: A method may include receiving a request from an Internet Protocol Multimedia Subsystem, where the request relates to an Internet Protocol Multimedia Subsystem service associated with user equipment The method may further include obtaining location or time zone information associated with the user equipment from an access network; providing the obtained location or time zone information to the Internet Protocol Multimedia Subsystem; and providing the obtained location or time zone information to an on-line or off-line charging system

Adaptive IPTV services based on a novel IP Multimedia Subsystem

Abstract: Heterogeneous communication devices are emerging and changing the way of communication. Innovative multimedia applications are now accessible through these embedded systems. The 3GPP IP Multimedia Subsystem (IMS) provides a basic architecture framework for the Next Generation Network (NGN) supporting the convergence platform for service provisioning in heterogeneous networks. ETSI TISPAN standardization effort focuses on delivering IPTV services on such platform. Nevertheless, IPTV on IMS standardization suffers from a lack of efficient user-centric network management mechanisms as the end-user may consume IPTV service from different access networks, on different mobile devices, at anytime. User's Perceived Quality of Service (PQoS) or Quality of Experience (QoE) of IPTV service may also suffer from wireless access network impairments. This paper introduces new functionalities in IPTV over IMS architecture which optimize satisfaction of the end-user and resource utilization of the operator's networks. A context-sensitive User Profile (UP) model is used to deliver IPTV streams adapted to the user's environment. In order to optimize the operator network usage, the impact of spatiotemporal dynamics of the video content on the deduced perceptual quality is considered. A Multimedia Content Management System (MCMS) is proposed to perform dynamic cross-layer adaptation of the IPTV stream based on PQoS measurements at the end-user side.

Systems and methods for peer-to-peer ims

Abstract: Systems and methods for peer-to-peer communication between user equipment using IP multimedia subsystem (IMS) functionality are provided. Each peer user equipment includes an IMS server and the peer-to-peer communication is established independent of network-based IMS servers. A third user equipment that does not include an IMS server can join the peer-to-peer communication using network-based IMS servers.

Method for implementing video conference service in IMS surroundings

Abstract: The present invention provides a method for realizing video conference service in the IMS environment, including: a step A: user terminals transmit request messages to an IP Multimedia Subsystem IMS core network, and the IMS core network forwards the request messages to the application server AS triggering business meeting; a step B: AS transmits conference resource application messages to a resource management system RMS, and the RMS appoints a multi-point control unit MCU apparatus for the conference, AS transmits request establishing conference message to the appointed MCU apparatus, the MCU establishes a conference, and returns backs the result to the AS; and a step C: after the MCU successfully creates the conference, the AS transmits the request message of the terminal to the MCU, the request message carries the session description protocol SDP of the user terminal, the MCU and the user terminal performs SDP media negotiation to establish an SIP session The present invention has enriched the access mode of the user terminal

Improved IP Multimedia Subsystem authentication mechanism for 3G-WLAN networks

Abstract: The provision of IP Multimedia Subsystem (IMS) introduces important advantages for users of 3G-WLAN networks. However, a multi-pass authentication procedure needs to be performed before accessing the IMS, resulting in added overhead and possible Quality of Service (QoS) degradations. The problem is further compounded when the user moves from one Wireless Local Area Network (WLAN) domain into another, which requires the authentication procedure to be repeated. To mitigate this problem, we present a lightweight, robust, and architecture-compatible IMS authentication protocol that implements a one-pass IMS procedure by promoting efficient key re-use for a mobile user. The security of the proposed protocols is verified using the Automated Validation of Internet Security Protocols and Applications (AVISPA) security analyser. We also analyse the authentication delay of our proposed scheme. Numerical results reveal a reduction in user authentication delay of more than 50% compared to the existing authentication procedure.

Contextualized User-Centric Multimedia Delivery System for Next Generation Networks

Abstract: Telecommunication and Internet services are constantly subject to changes, seeking the customer's full satisfaction. Enriching these services with innovative approaches such as context-aware, social, mobile, adaptable and interactive mechanisms enable users to experience a variety of personalized services seamlessly across different platforms and technologies. In this sense, Service Oriented Architectures play a central role in allowing component reuse and low cost service creation. Together with IP Multimedia Subsystem enable the convergence of telecommunications and web services, allowing the network transport technologies to be abstracted from the services above. By integrating these technologies, a number of synergies can be explored. Existing services can be easily enriched with context information, made available on a variety of networks and new services can be composed using previously existing building blocks. This paper explains how this integration can be achieved, and demonstrates the potentialities of this architectural paradigm with a prototype service.

OEFMON: An open evaluation framework for multimedia over networks

Abstract: As various types of networks are proliferating with greater capacity, the demand for multimedia services, such as videoconferencing, VoIP, and IPTV, over underlying networks has been increasing. This demand has increased the need for an evaluation framework to analyze the quality of such multimedia services and network performances for the related research areas. This article proposes OEFMON, an open framework for evaluating the quality of multimedia transmissions over networks. OEFMON integrates a multimedia module and a network simulator. The major advantages of OEFMON compared to other existing work are support for any number of multimedia codecs, adaptive coding based on network feedback, on-the-fly observation of multimedia transmission, and easy extension for other tools. A couple of case studies are performed to demonstrate the applicability and usefulness of our framework.

System for transmitting control signals using an uplink

Abstract: The present invention relates to a system for providing multimedia service, comprising a network device which provides multimedia services using a wireless network, and a terminal which receives the multimedia services from the network device. The network device may receive feedback on the multimedia service receiving state from the terminal that receives the multimedia services, and control the multimedia services based on the received feedback.

Methods and apparatus for supporting the implementation of ims service continuity

Abstract: According to a first aspect of the present invention there is provided a method of operating a node of a communications network that is configured to provide an IP Multimedia Subsystem Access Transfer Control Function. The method comprises storing information regarding IMS Service Continuity features that are supported by Mobile Switching Center servers within the network. Upon receipt of a message requesting IMS registration of a user equipment using the information to determine the IMS Service Continuity features that may be available to the user equipment, and, for any IMS Service Continuity features that may be available, including an indication that the IMS Service Continuity feature may be available in the message, and forwarding the message towards a Service Centralization and Continuity Application Server.

A new architecture of HSS based on cloud computing

Abstract: Ip Multimedia Subsystem (IMS) is the key technology of the next generation network (NGN) and the optimal solution of mobile and fixed network convergence which is approved by the public. Home Subscribe Server (HSS) is not only the data center of the system, but also the key of supporting the user mobility and call controlling. Since the growth of user data, the capacity of HSS storage and computing to the IMS system is very critical. Cloud computing is a successful example for solving the problem that originates from the massive growth of data by using distributed storage and computing in the internet industry. In this paper, a improved HSS architecture based on distributed cloud computing will be designed, thus it will have the better performance on data storage and delivery and the performance of the whole IMS system will be improved.

Services Composition Based on Next-Generation Service Overlay Networks Architecture

Abstract: The User-Generated Contents (UGC) and User-Generated Services (UGS) concepts allow end-users to create their own contents and services as well as to share and to manage the lifecycle of these services. Web Services paradigm has been widely used for services composition in Internet to create Web applications that are flexible and rapidly deployable. In Telecom, on the other hand, the IMS (IP Multimedia Subsystem) architecture enables valued-added services composition for IP-based networks. Several ongoing efforts are attempting to leverage service-oriented architecture (SOA) for Telecom environment. The IEEE Next-Generation Service Overlay Networks (NGSON) working group is focusing on this integration and an architecture has been proposed. This paper work along NGSON concept and provide its extension for services composition. Finally, we discuss an illustrative use case scenario to help bring clarity to our proposed "Enhanced" NGSON architecture.