UM3 data exchange model and encoding rules

Abstract

M2M (Machine to machine) service has been designed to provide the customer with remote monitoring and control for various sensors and controllers. M2M platform is composed of a bunch of the software and devices equipped with network connectivity providing data manipulation and exchange among devices and applications. It is also required to be equipped with data management and analysis functions independent of the specific services. In this paper, it is proposed a highly scalable and flexible data exchange protocol, named UM3, which is independent to industry and products. The proposed UM3 data exchange protocols with data model and its encoding rules have strong interoperability to the various M2M related industry standards. UM3 data model based on ITU-T ASN.1 specification language has the capability of representing a time varying unstructured data format. The binary encoding rule of UM3 uses T-NL-N-L-V PDU format. It uses character string instead of numerical tag values as its attribute identifier. UM3 encoding rule provides XML and JSON encoding schemes as its text-based encoding methods. The merits of binary and text based encoding rules are more self-descriptive compared to numerical values based BER, XER and BACnet, etc. By the proposed in this paper self-descriptive capability and compatibility to the other industry protocols, integration of various M2M devices with different industry M2M platforms shall be more easer and expandable by modular way resulting general purpose M2M services. Finally, the pros and cons by character string based data exchange protocol and the future directions of M2M platform for different type of sensors and industry would be discussed and suggested.