Channel hopping aware channel access and re-transmission

A wireless radio device, comprising:

• a transceiver coupled to at least one antenna and a real-time clock;
• a processor having an associated memory which stores code for implementing a channel hopping aware channel access and retransmission algorithm or hardware including digital logic for implementing said algorithm, said algorithm for:
• setting a backoff time for frame transmissions from said radio device comprising an Interference Avoidance Delay (IAD) plus a random backoff time, wherein for an initial one of said frame transmissions also setting an initial number for a number of backoffs (nb) and an initial value for a number of preamble detection backoffs (npdb);
• after waiting for an expiring of said backoff time and provided a current value for said npdb <a predetermined maximum npdb value, performing a first clear channel assessment (CCA) on said radio device's receive (Rx) channel, wherein a value for said npdb is incremented following a failure of said first CCA;
• performing a second CCA on an Rx channel of a target radio device, wherein a value for said nb is incremented following a failure of said second CCA, and
• provided a not busy is determined in said second CCA, a first radio device transmitting a frame on said Rx channel of said target radio device.