Tsch orchestra based scheduling apparatus and method using sub-ghz band to increase network lifetime

A TSCH Orchestra based scheduling method using a Sub-Ghz band to increase network lifetime, wherein for TSCH Orchestra based scheduling using a Sub-Ghz band in an apparatus comprising a preferred parent management module configured to perform storing of preferred parent information by managing preferred parent selection waiting time and managing preferred parent selection operation, a packet transceiver module configured to manage packet reception and packet transmission, and a slot management module configured to manage neighbor transmission slots, and manage reception slots and transmission slots,

• the method comprises controlling an operation of applying a sender-based (SB) method to a root device in an Orchestra receiver-based (RB) network, and
• controlling a reception slot activation operation using an ACK of the root device, and local duplicate transmission slot avoidance and global duplicate transmission slot avoidance operations.