Ivaylo Atanasov

Mobile Edge Service for Intersystem Handover

Multi-access Edge Computing (MEC) appears to be an integrating technology for radio access networks to enhance the access capacity, optimize network performance and improve quality of experience for end users. MEC distributes cloud capabilities for storage and computing in the radio access network, close to the end users. As far as the development of advanced Application Programming Interfaces is a key area, we propose a new mobile edge service that enables 3rd party control on intersystem handover. The proposed service enables authorized applications to initiate intersystem handover following specific policy. The service is described by information flows illustrating the basic functionality, data models that provide mediation functions, and handover state models considering some implementation issues.

Mobile Edge Services for Quality of Service Control and Access to Terminal Status

Abstract An important ingredient of fifth generation (5G) networks will be Multi-access Edge Computing (MEC). MEC brings the computational intelligence of the cloud within the Radio Access Network (RAN). The virtualized functionality is accessible through Application Programming Interfaces (APIs). In this paper, we study capabilities of reuse existing time-tested Web Services to provide mobile edge middleware services. The focus is on mobile edge services that can be used by applications for bandwidth management and access to user contextual information. An extension of Web Service functionality is proposed. Implementation issues of Web Services in RAN are considered.

An approach to transformation of data into knowledge for power control in smart homes

Internet of things (IoT) encompasses information and networking technologies which allow connected devices gathering data from their environment to exchange information with network applications. The increased number of diverse devices and the variety of multimodal data make interoperability a challenging task. Synthesis of semantic information from raw IoT data enables sharing of common data models between different applications. The paper presents an approach to modelling semantic annotation for power control in smart homes and then converting it to knowledge. The approach includes context aware models as well as a knowledge base describing behaviour of an autonomous agent. The context aware models representing remote device management are formalised and verified using the concept of bisimulation. Temporal logic is used for specifying the agent behaviour and reasoning about power control of home appliances.

An approach to transform Internet of Things data into knowledge

The concept of Internet of Things (IoT) will play an essential role in future applications aimed at optimisation of energy consumption. Interoperability of IoT applications can be achieved by usage of data models that explicitly determine the structure of information exchanged between applications. This paper presents a layered approach to modelling semantic information for IoT applications aimed at improving energy efficiency. Physical system is modelled as things that can be observed and actuated. The observations and actuations are context-aware and may be used to control processes in the physical system. The purposive usage of observations and actuations is defined as a service model exposing generic capabilities that can be shared across different applications. The service model is described by RESTful web services for power control. The potential of web services for home appliance energy efficiency is estimated.

A Case of Service Interaction in M2M Device Management

The explosion of diverse Machine to Machine (M2M) services and applications may lead to undesired service interaction. While the service interaction problem is thoroughly studied for telecommunication services, there is a lack of knowledge about the manifest of service interaction in M2M communications. The paper presents a model of connectivity management of M2M devices and formal definition of value added services related to device connectivity. An approach to detect service interaction is proposed based on standard reasoning on description logic.

Reducing Energy Consumption by Using Smart Metering Intelligent Systems

Abstract Smart metering is aimed at efficient energy management. Its potential may be revealed using recent advances in machine type communications. This paper presents an approach to design web services for residential power control with prepaid functionality. The reduction in energy consumption is estimated for typical households applying heating control.

Open Access to Resource Management through Web Services

Abstract The paper investigates the capabilities for open access to resource management in multimedia networks through Parlay X Web Services. Resource management allows the network operator to provide Quality of Service (QoS) to user sessions and to apply advanced charging. The study is based on the analysis of Policy and Charging Control (PCC) functions defined for evolved packet systems The PCC comprises flow-based charging including charging control and online credit control, gating control, and Quality of Service Control (QoS) control. The required functionality for open access to QoS management and advanced charging is identified. Parlay X Web Services are evaluated for the support of PCC and some enhancements are suggested. Implementation aspects are discussed and Parlay X interfaces are mapped on IMS control protocols. Use Cases of Parlay X Web services for PCC are presented.

Study on Requirements for Service Interaction

The paper concerns problems for service orchestration in IP-based multimedia telecommunications. For operators that want to leverage the value of legacy systems and services, Service Capability Interaction Manager (SCIM) provides means of wrapping those systems and services so that they can be orchestrated alongside new services. SCIM functionality is not specified in details and ‘live’ SCIM implementations need to consider operators’ service specifics. The paper presents a study on the requirements of SCIM that can be used to integrate existing intelligent network services implemented on different service platforms in the network of a real mobile operator. Different service interaction scenarios are investigated and the required functionality of SCIM is synthesized.

Call-unrelated Interaction between SIP and Parlay/OSA

The paper investigates capabilities of Parlay/OSA (open service access) applications to access to call-unrelated functions, like mobility, user status, terminal capabilities, presence and availability in SIP (Session Initiation Protocol) networks. It addresses means to support Parlay/OSA applications from SIP endpoints in the context of non-INVITE server transactions and client transactions. A mapping between Parlay/OSA interface methods and SIP messages is suggested.

Service Creation Supporting Tools

In this paper supporting tools of a new mark-up language developed for service creation in next generation networks are presented. The language supports open interfaces of Parlay/Open service access and its grammar is formally described in augmented Backus Naur form (ABNF). In order to allow language extensibility without the need of manual reprogramming its interpreter, a translator-generator is developed. The translator-generator automatically generates parts of the language interpreter.