Mobile Edge Service for Charging Control

5G systems will provide a flexible charging capabilities including policy control based on spending limits for a subscription. Edge computing possesses the potential for exposing policy control and charging capabilities to third party applications close to the end users. In this paper, we propose a new mobile edge service that provides open access to functions related to monitoring the usage limits regardless the way of measurement i.e. monetary, volume, duration, etc. Currently, this function is a part of the core network functionality. Using the proposed service interfaces, an intended application may track the usage of network resource by a subscriber and to request applying of enforcement action to user traffic such as quality of service downgrade, traffic redirection or blocking close to the end user. The description of the proposed mobile edge service is provided in form of typical use cases, data model, interface definition, and formally verified state models

Identity Management in Future Railway Mobile Communication System

The Future Railway Mobile Communication System (FRMCS) has emerged as a worldwide standard for railway communication. This technology enables the operational efficiency and safety of railways to be improved by providing mission critical communications, machine-type communication for the railway system on board, in addition to trackside telemetry and broadband connectivity for passengers. Different equipment types, users, and functional identities can be involved in communication, and each of them is uniquely identified. Identity management is an important part of the security functions provided by the FRMCS system. This paper presents a service-oriented approach to identity management functionality, enabling service composition for railway applications and service virtualization. This paper studies functionality for the initial registration and subsequent deregistration of railway devices, users, and their functional identities, in addition to the transfer of the registered identities between different FRMCS serving areas while the train moves. Two FRMCS services that follow the principles of representational state transfer architecture are proposed. Services’ functionality is illustrated by use cases, data types, and application programming interfaces that enable services to be interacted with. Identity registration status models are developed, formally described, and mathematically verified. Discussion of the applicability of the proposed services for the implementation of FRMCS security and safety functions is provided. The presented service-oriented approach features a satisfactory level of flexibility and versatility

Application Level User Traffic Control at the Mobile Network Edge

Multi-access Edge Computing is a promising technology that may satisfy the diverse quality of service requirements of 5G services. It brings the cloud capabilities for storage and computing in proximity to end users and thus it enables more timely reaction to dynamic network conditions. In this paper, we propose a new mobile edge service which provides functionality for user traffic handling. Using the service interfaces, an intended mobile edge application may shape, redirect or block user traffic based on information about radio conditions, user location, requested data speeds, etc. The new mobile edge service is described by typical use cases, data model, interface definition, and state models which are formally verified