System and methods for mitigating out-of-band interference in c-v2x transmissions

A method for enhanced resource reservation while accounting for out-of-band (OOB) interference detection and mitigation, comprising:

• by a self-vehicle and in each slot of a cellular vehicle-to-everything (C-V2X) communication band:
• checking if transmission (TX) is planned in a particular slot during a slot duration;
• if TX is not planned in the particular slot during the slot duration, checking if Listen-Before-Talk (LBT) is currently set and if OOB energy is detected during the LBT period;
• and
• if yes, cancelling the transmission and scheduling a one-time allocation, or if LBT is not currently set and if OOB energy is not detected during the LBT period, transmitting at a scheduled time.

A system for mitigating out-of-band (OOB) interference in cellular vehicle-to everything (C-V2X) transmissions, comprising:

• a V2X modem for transmitting and receiving messages;
• an OOB energy detection unit for detecting OOB energy transmitted by a nearby WiFi transmitter inside the C-V2X band;
• a one-time allocation identification unit for tracking a resources map to identify a one-time allocation;
• and
• an enhanced resource reservation algorithm and MCS setting unit for configuring the V2X modem for transmission based on detected OOB energy and the resources map.