A new method based on the slotted random anti-collision algorithm was introduced to solve the collision problem in the multi-tag inventory in the standard of UHF RFID.

Based on the research of its Q value adjusting method and the process of this important protocol, a new Q value adjusting method and an improved slotted random Aloha method were proposed.

To solve the problem of random time delay in an internet-based telecontrol system,the paper proposes a new method which can be used in a feedback path.

Closed-loop real-time control over the internet is very difficult because of the commonly existed random time delay, data packet dropout, and data packet out of order during internet transmission.