Abstract: The Internet of Things expects ubiquitous access support, including enabling and access. HF RFID and its previous RFID are limited to individual enabling and access. The current UHF RFID makes the Internet of Things community enable the demand to be implemented sequentially through collision arbitration protocols, which is still an individual enabling and access method. Due to its ability to resist tag collisions and reader collisions, code division radio frequency identification can also build corresponding system modes by selecting appropriate system parameters, and can meet the ubiquitous access needs of various groups of the Internet of Things.

Key words: Internet ofThings, ubiquitous enabling and accessing, code divisionRFidentification