An Enhanced Reliable Access Scheme for Massive IoT Applications in Ubiquitous IoT Systems

Algorithm 2

TIA in the switch.

Input: HD, LD, ,

Send request reservation information to the controller in HPRS, including the following:

 Priority , 1 represents the HD, 2 represents the LD;

 Node number ;

 Deadline

Waiting to receive the updated access flow table of the controller ;

Complete the channel access according to the updated access flow table.