Taichi Kawabata

MORSA: A Multi-objective Resource Scheduling Algorithm for NFV Infrastructure

Capital expenditure (CAPEX) and operating expenses (OPEX) have been practical concerns for telecommunication companies, and Network Function Virtualization (NFV) has attracted significant attention in recent years. However, the NFV Infrastructure (NFVI) includes a wide variety of resource types and stakeholders. Hence, there is still a need for the existing resource scheduling approaches, but they are no longer sufficient. In this paper, we propose a Multi-objective Resource Scheduling Algorithm (MORSA) to optimize the NFVI resources. In the development of the MORSA, we designed a plug-in architecture to satisfy various requirements related to NFVI resources and stakeholder policies. The MORSA allows the NFVI Resource Scheduler to optimize simultaneously the combination of possibly conflicting objectives with multifaceted constraints in complex real world situations. Evaluation results show that the MORSA obtains approximate solutions among conflicting objectives in a reasonable computation time.

vConductor: An NFV management solution for realizing end-to-end virtual network services

NFV, being discussed and standardized in ETSI, is regarded as a promising candidate technology for Future Networks. Although many advantages are expected, the introduction of NFV will greatly challenge current management systems. In this paper, we summarize some of the carriers requirements for the management of NFV, based on which we propose vConductor as an NFV management solution. We say vConductor is innovative due to its characteristics of automatic service provisioning, end-to-end inventory management, and generic system design. To achieve these goals, we design a completely modular-based system structure and refine the process of provisioning a virtual network service. Furthermore, we propose a general data model, specifically for NFV, starting from the TM Forum SID. We believe that vConductor will be a catalyst for accelerating the industrialization of NFV.

Component-oriented network management system development

The integration and seamless interconnection of local and global networks enable a variety of network services. However, they also mean that the swift evolution of network systems and associated computer technologies require rapid and flexible development of network management. In this paper, we propose a component-oriented approach that provides rapid and flexible construction of a network management system.

Impact of management data placement in NFV service coordinated across multiple datacenters and WANs

As network function virtualization (NFV) technologies have emerged, some standardization bodies such as the ETSI have advanced standardization activities on their functional blocks and interfaces. However, several issues such as where virtual network configuration information should be placed or how virtual network configuration among Virtualized Infrastructure Managers (VIMs) should be handled have not been standardized yet. This paper proposes several candidates to address these issues, and discusses their advantages and disadvantages from various viewpoints such as security.

Leveraging real-world data while protecting privacy Framework using personal agent system for distributed data

We propose a real-world data exchange framework based on the concept of data ownership. The most important issues with these data are the protection of user privacy and preserve the value of the information derived from the data to consumers. This framework enables the protection of privacy and enables maximum leverage of real-world data belonging to each person at the same time. In our framework, real-world data and its information value are managed and protected by the personal agent system that works on each persons authority. On that basis, the information value can be exchanged and leveraged using a market mechanism that distributes transactions of queries and answers concerning the data. We also present the basic design of the framework and its personal agent system that works on multiple user devices.