Patent ID: 8228859
Filing Date: 2012-07-24
Classification: H04B,H04W

Abstract:
1. An industrial wireless communication method based on Self-Adaptive Channel Hopping within Timeslot (SACHT), the method comprising: assigning two communication channels including a preferred channel and a backup channel to each communication link within one time slot, the length of Send Waiting Time Window (SWTW) and Receive Waiting Time Window (RWTW) for communication are negotiated and defined before starting; and selecting the preferred channel as a communication channel at the beginning of a given time slot, wherein if the preferred channel is interfered, a sender does not send a message due to detecting the preferred channel interfered within the SWTW, and a receiver does not receive an expected message within the RWTW, a channel switching control command being generated and implemented respectively by the sender and the receiver, and then the sender and the receiver communicating on the backup channel.