The IP Multimedia Subsystem (IMS) has been standardized as a Service Delivery Platform (SDP) positioned in the control layer of the Next Generation Network (NGN) infrastructure. To meet the diverse demands from NGN customers, it is...
moreThe IP Multimedia Subsystem (IMS) has been standardized as a Service Delivery Platform (SDP) positioned in the control layer of the Next Generation Network (NGN) infrastructure. To meet the diverse demands from NGN customers, it is effective to integrate different technologies, such as telecommunication, mobile, and Internet to enrich offered services. To integrate these domains the Service Oriented Architecture (SOA) concept developed for enterprise networks, can be applied into the IMS architecture. In this paper we overview the service control methods in IMS, discuss the concept of using a Service Broker (SB) to control and orchestrate service executions, and address some main issues of the integration of the SB component in the IMS architecture.
The IP Multimedia Subsystem (IMS) has been standardized as a Service Delivery Platform (SDP) positioned in the control layer of the Next Generation Network (NGN) infrastructure. To meet the diverse demands from NGN customers, it is...
moreThe IP Multimedia Subsystem (IMS) has been standardized as a Service Delivery Platform (SDP) positioned in the control layer of the Next Generation Network (NGN) infrastructure. To meet the diverse demands from NGN customers, it is effective to integrate different technologies, such as telecommunication, mobile, and Internet to enrich offered services. To integrate these domains the Service Oriented Architecture (SOA) concept developed for enterprise networks, can be applied into the IMS architecture. In this paper we overview the service control methods in IMS, discuss the concept of using a Service Broker (SB) to control and orchestrate service executions, and address some main issues of the integration of the SB component in the IMS architecture.
The Third Generation Partnership Project (3GPP) has specified the IP Multimedia subsystem (IMS) as a service control platform that al- lows creation of new multimedia and multi-session applications utilizing wireless and wireline...
moreThe Third Generation Partnership Project (3GPP) has specified the IP Multimedia subsystem (IMS) as a service control platform that al- lows creation of new multimedia and multi-session applications utilizing wireless and wireline transport capabilities. Supporting many types of communications such as instant messaging (IM), push-to-talk cellular walkie-talkie service, and multimedia telephony; the IMS should provide mechanisms to negotiate various levels
ABSTRACT With a large majority of the world’s population moving towards living in urban environments in the foreseeable future, the notion of Smart Cities is emerging globally as an important research topic. A particular challenge is the...
moreABSTRACT With a large majority of the world’s population moving towards living in urban environments in the foreseeable future, the notion of Smart Cities is emerging globally as an important research topic. A particular challenge is the unstable power supply of cities in underdeveloped countries, thus creating a need for smart energy management systems. By installing small smart and affordable devices at the end-user’s location, information about the state of the power grid can be collected and transmitted (over different network technologies) to a central controller. This can be the future technique for South Africa’s grid overload management, which operates in a demand- response manner allowing for loads to be measured and limited as needed. To investigate this issue we propose to interweave a Smart City platform and an ETSI/oneM2M compliant Machine-to-Machine communication framework. We emphasize secure identification and authentication of sensors and users as well as a policy-based store and forward functionality. To validate our approach, we analyse the core developments by carrying out experimental research in federated testbeds in Berlin and Cape Town using a Slice Federation Architecture (SFA) compliant framework and conducting field studies (pilots) in Johannesburg and San Vicenç dels Horts.
ABSTRACT With a large majority of the world’s population moving towards living in urban environments in the foreseeable future, the notion of Smart Cities is emerging globally as an important research topic. A particular challenge is the...
moreABSTRACT With a large majority of the world’s population moving towards living in urban environments in the foreseeable future, the notion of Smart Cities is emerging globally as an important research topic. A particular challenge is the unstable power supply of cities in underdeveloped countries, thus creating a need for smart energy management systems. By installing small smart and affordable devices at the end-user’s location, information about the state of the power grid can be collected and transmitted (over different network technologies) to a central controller. This can be the future technique for South Africa’s grid overload management, which operates in a demand- response manner allowing for loads to be measured and limited as needed. To investigate this issue we propose to interweave a Smart City platform and an ETSI/oneM2M compliant Machine-to-Machine communication framework. We emphasize secure identification and authentication of sensors and users as well as a policy-based store and forward functionality. To validate our approach, we analyse the core developments by carrying out experimental research in federated testbeds in Berlin and Cape Town using a Slice Federation Architecture (SFA) compliant framework and conducting field studies (pilots) in Johannesburg and San Vicenç dels Horts.
ABSTRACT Advances in the field of wireless sensors in particular and machine-to-machine communication in general are converging into the Internet of Things (IoT). Real and virtual `things' will create a pervasive information space...
moreABSTRACT Advances in the field of wireless sensors in particular and machine-to-machine communication in general are converging into the Internet of Things (IoT). Real and virtual `things' will create a pervasive information space that will hold vast amounts of data. The challenge is to give mobile users an on-demand access to this space, to discover and gather data dynamically from available sensors in the surroundings and enable collaboration by allowing the sharing of own data. Open M2M Data is a new paradigm in usage and delivery of (machine) data. The information space described above will be made accessible on-demand by bringing device-to-device (D2D) and machine type communication (MTC) together and introducing Linked Data principles into the machine-to-machine (M2M) platforms.
ABSTRACT Advances in the field of wireless sensors in particular and machine-to-machine communication in general are converging into the Internet of Things (IoT). Real and virtual `things' will create a pervasive information space...
moreABSTRACT Advances in the field of wireless sensors in particular and machine-to-machine communication in general are converging into the Internet of Things (IoT). Real and virtual `things' will create a pervasive information space that will hold vast amounts of data. The challenge is to give mobile users an on-demand access to this space, to discover and gather data dynamically from available sensors in the surroundings and enable collaboration by allowing the sharing of own data. Open M2M Data is a new paradigm in usage and delivery of (machine) data. The information space described above will be made accessible on-demand by bringing device-to-device (D2D) and machine type communication (MTC) together and introducing Linked Data principles into the machine-to-machine (M2M) platforms.
Multimedia telephony over IP is a standardized IP multimedia subsystem (IMS) telephony service in release 7 of the third generation partnership project (3GPP), which is build on the IMS capabilities already provided in 3GPP Releases 5 and...
moreMultimedia telephony over IP is a standardized IP multimedia subsystem (IMS) telephony service in release 7 of the third generation partnership project (3GPP), which is build on the IMS capabilities already provided in 3GPP Releases 5 and 6. In this paper we investigate the performance of IMS multimedia telephony service over WLAN access networks by the means of simulation using
The IP multimedia subsystem (IMS) has been standardized to offer multimedia services over an internet protocol (IP) based infrastructure. These services require different quality-of-service (QoS) classes, hence the importance of providing...
moreThe IP multimedia subsystem (IMS) has been standardized to offer multimedia services over an internet protocol (IP) based infrastructure. These services require different quality-of-service (QoS) classes, hence the importance of providing QoS services through seamless interconnection networks is fueling an increasing interest in the next generation network (NGN). A critical issue regarding deployment of a QoS service is the ability to provide the network and also the service across administrative domains. Flexible inter-domain QoS provisioning requires tight coordination between the session and transport levels and can not be considered as a transport level task only. Even if operators in different domains utilize IP QoS agreements, they may be incompliancy configured. In this paper we identify the limitations in the current IMS policy control architecture, and propose a centralized policy framework for inter-domain QoS based on the IMS architecture.
The provisioning of quality-of-service (QoS) with interworking between heterogeneous mobile environments will be of vital importance for the future success of mobile telecommunications. As each network technology has its own distinct QoS...
moreThe provisioning of quality-of-service (QoS) with interworking between heterogeneous mobile environments will be of vital importance for the future success of mobile telecommunications. As each network technology has its own distinct QoS mechanism, it becomes essential to support interworking methods between different QoS technologies, in order to guarantee end-to-end QoS in heterogeneous networks. This paper investigates the interworking between differentiated service (DiffServ) core networks and the IEEE 802.11e QoS-enabled wireless LAN (WLAN). An interworking framework is proposed, in addition to a mapping scheme from the DiffServ per-hob behaviors (PHBs) to the 802.11e enhanced distributed coordinated access (EDCA) access categories (AC). The interworking framework is evaluated by means of simulation demonstrating the conformance of 802.11e EDCA to DiffServ PHBs in an end-to-end architecture.
Information and Communication Technologies are playing major roles in creating Smart environments, and enhancing services in various sectors. The Machine-to-Machine (M2M) communication paradigm enables devices used in all live aspects to...
moreInformation and Communication Technologies are
playing major roles in creating Smart environments, and
enhancing services in various sectors. The Machine-to-Machine
(M2M) communication paradigm enables devices used in all live
aspects to communicate and share information with limited
human intervention. In this paper we present an M2M
telemedicine service to monitor Electrocardiagram (ECG) signal
remotely. ECG is a physiological signal produced by electrical
activity of heart; it can be recorded using electrocardiograph
device and used to detect many heart problems, such as heart
attacks. Data generated by ECG's device are sent over M2M
platform, that is OpenMTC for further processing in devices that
are on the client side.
Sensors, actuators and devices that compose the Internet of Things (IoT) world are becoming more diverse every day in terms of capabilities and amount of generated traffic. Current Machine-to-Machine (M2M) communication standardization...
moreSensors, actuators and devices that compose the Internet of Things (IoT) world are becoming more diverse every day in terms of capabilities and amount of generated traffic. Current Machine-to-Machine (M2M) communication standardization efforts try to formalize the interfaces between M2M nodes based on the perspective of exchanging uniform small data size with low sampling rate only. However, many devices will require support for more heterogeneous traffic patterns, with different network capacity. This paper introduces a communication concept for supporting gracefully a heterogeneous set of devices. This paper analyses the effect of traffic size in M2M transactions and propose a concept to adapt gracefully to support heterogeneous traffic patterns in M2M systems. To prove its feasibility, the concept is exemplified on top of oneM2M architecture and implemented as part of the Fraunhofer FOKUS OpenMTC toolkit. Additionally, the concept was applied to a deployment in an E-Health pilot and practical measurements during functional evaluation are reported.
