OPWUM: Opportunistic MAC Protocol Leveraging Wake-Up Receivers in WSNs

Figure 1

Packet forwarding using OPWUM. Red color is used to represent WUBs transmission, gray color is used to represent DATA and ACK frames transmission, and white color is used to represented reception. Main transceiver channel is represented with a solid time line and WuRx channel with a dotted time line. CS are represented by dark gray rectangles located under the time line.