IoT Communication, especially IIoT communication, is machine to machine communication, which is quite different from the human to human centric communication that the existing Internet was originally designed for. Privacy and security is one of the major concerns of IoT communication, as most of the communication will not be monitored or controlled by a human being. High precision services are very essential in some of the IoT system where any interruption of the service will cause serious and non-affordable damages. And last but not least, the interoperability among various IoT networks/systems remains a challenge. This presentation will contribute some initial thoughts and concepts trying to tackle the aforementioned challenges.