SYSTEM AND METHODS FOR MITIGATING OUT-OF-BAND INTERFERENCE IN C-V2X TRANSMISSIONS

1 . A method for setting a modulation coding scheme (MCS) value 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 OOB interference is detected while receiving a message in the particular slot;

if OOB interference is not detected while receiving the message in the particular slot, checking if the received message is a one-time allocation; and,

if the received message is a one-time allocation, setting a MCS value lower than a regular MCS value to increase the resilience to the OOB interference.

2 . The method of claim 1 , wherein if TX is planned in the particular slot during the slot duration, transmitting a message using a calculated MCS value.

3 . The method of claim 1 , wherein if the received message is a one-time allocation, setting the regular MCS value.

4 . The method of claim 1 , wherein the OOB interference is caused by WiFi transmission in the U-NII-4 band.

5 . The method of claim 1 , wherein the OOB interference is caused by WiFi transmission in the U-NII-5 band.

6 . 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.

7 . The method of claim 6 , wherein if TX is not planned in the particular slot during the slot duration, checking if OOB interference is detected while receiving a receive (RX) message in the particular slot, and if yes, temporarily enabling the LBT.

8 . The method of claim 6 , wherein the temporarily enabling the LBT includes enabling the LBT for a period between a 100 mS and 1 second.

9 . The method of claim 6 , wherein the OOB interference is caused by WiFi transmission in the U-NII-4 band.

10 . The method of claim 6 , wherein the OOB interference is caused by WiFi transmission in the U-NII-5 band.

11 . 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.

12 . The system of claim 11 , wherein the V2X modem is configured with a calculated resource allocation slot and a MCS value.

13 . The system of claim 11 , wherein the OOB energy detection unit is configured to receive from the V2X modem an Error Vector Magnitude (EVM) value and powers received in all subchannels.

14 . The system of claim 11 , wherein the WiFi transmitter transmits in the U-NII-4 band.

15 . The system of claim 11 , wherein the WiFi transmitter transmits in the U-NII-5 band.