Wei Mao

A Storage Solution for Massive IoT Data Based on NoSQL

Storage is an important research direction of the data management of the Internet of Things. Massive and heterogeneous data of the Internet of Things brings the storage huge challenges. Based on the analysis of the IoT data characteristics, this paper proposed a storage management solution called IOTMDB based on NoSQL as current storage solutions are not well support storing massive and heterogeneous IoT data. Besides, the storage strategies about expressing and organizing IoT data in a uniform manner were proposed, some evaluations were carried out. Furthermore, we not only just concerned about descripting the data itself, but also cared for sharing of the data, so a data sharing mechanism based on ontology was proposed. Finally, index was studied and a set of query syntaxes to meet the needs of different kinds of IoT queries based NoSQL was given.

UAI-IOT Framework: A Method of Uniform Interfaces to Acquire Information from Heterogeneous Enterprise Information Systems

Enterprise information systems store great amount of information, which describes details of the objects in Internet of things. Due to these complex systems lack of uniform interface, users could hardly get the valuable information. We propose the UAI-IOT framework, which provides a method of uniform interfaces to actively acquire information from heterogeneous enterprise systems. To be compatible with these systems, the framework obtains information from log files and transformed the log information into semantic events, which could be acquired by any user through the interfaces of information service. Besides, integrating UAI-IOT framework and RNS would make contribution to share information among organizations. We also introduce a use case and make a comprehensive discussion.

Towards an Equitable Federated Name Service for the Internet of Things

Because of the heterogeneity of resources, diversity of ownership, and decentralization of application management, the traditional pyramid-styled name service is no longer suitable for the Internet of Things (IoT). In order to avoid monopolistic control on IoT name service which is caused by a single root node, some researches have been done to create a federated name service. Yet a simple union of all existing name services cannot guarantee the equality of all participants. Based on the Identity Based Encryption (IBE) technology, we design an equitable federated name service for the IoT. First, Node Mapping Table (NMT) is distributed to each root nodes, which can effectively overcome the shortcomings of the centralized management. Second, the notification of creating or updating NMT will be digitally signed by multiple authorities together to ensure the real equity and fairness of the NMT.

A User-Oriented Resource Management Model for the Internet of Things

With the rapid development of Internet of Things (IoT), vast amounts of heterogeneous resources have been connected to the network. How to effectively manage these resources will become a critical issue. This paper first summarizes the current status of the resource management in different scenarios, like WSN, RFID, and RSN. Then from a user perspective, based on the resource name service, we propose a generic resource management model, which is composed of users, devices and resources. Two actual cases are introduced to describe how users can obtain the logical information and control the entity object through this theoretical model. Finally, the analysis shows that this model can meet the needs of ordinary users in compatibility, stability, real-time and flexibility for IoT resources management.

A Server Friendly File Synchronization Mechanism for Cloud Storage

The rapid development of cloud computing has made traditional data centers energy hungry. Thus it is very important to reduce the amount of calculations on the cloud. In this paper we focus on the energy saving in cloud storage service. First we analyze rsync algorithm widely used in the cloud synchronization service and reveal how this algorithm will lead to high CPU load on cloud. Then we design and implement an improved algorithm that moves most calculations out of the cloud. The experiments show that the synchronization related CPU load in server dropped significantly when using our improved method. The improved mechanism can be applied not only in cloud storage service, but also in any centralized synchronization scenario to reduce CPU load on the central nodes.

EPP-IP: A flexible and automatic IP address registration mechanism

The inevitability of IPv6 has come to fore. How to resolve the problem of IP address registration has been a great challenge for network management. The existing solution uses manual registration mechanism, not suitable for dealing with massive IPv6 addresses. Based on the Extensible Provisioning Protocol, we propose an “EPP-IP” mechanism to achieve a flexible and automatic registration management for hierarchical IP addresses. It is compatible with the current address allocation strategy, and can be continued to extend as needed. Complete and consistent registration information will contribute greatly to other network security research.

Host-identifier-based scheme for source accountability of the internet

This paper explores the current Internets potential to provide accountability. We present a new IPv6 address management and certification hierarchy to achieve host-oriented accountability of the Internet, with the current addressing system remaining unchanged. With the design of HIA (Host-Identifier-Embedded IPv6 Address), we present the framework for host identity authentication, packet source validation and the host reputation system construction. This paper also discusses the feasibility and deployment issues about our design.

An application of host identity tags to DKIM for identifying signers

The DomainKeys Identified Mail (DKIM) protocol gives a solution to guarantee the authentication and the integrity of e-mail messages. And in practice, to make DKIM come from theory to engineering, a concept of ADSP (Author Domain Signing Practice) has been put forth in an IETF draft. However, on the aspects of identifying a signer and delegating the signing ability, ADSP fails to give a specification. Yet the HITs (Host Identity Tags), put forth in RFC 5201, are born to identify signers featuring asymmetric key pairs and HITs will offer extra functions for security of the keys involved and management of the identifiers. This paper proposes to apply HITs to DKIM for identifying signers.