WiFi and cellular coexistence strategies

Coexistence in Shared Spectrum

WiFi and cellular technologies increasingly share spectrum bands, creating coexistence challenges. LTE-Unlicensed and NR-Unlicensed operate in the 5 GHz and 6 GHz WiFi bands using Listen Before Talk mechanisms to fairly share the medium with WiFi access points. In LAA mode, the cellular system performs clear channel assessment before transmitting, backing off if WiFi energy is detected above a threshold. However, WiFi devices use CSMA/CA with different sensing thresholds and timing, which can lead to asymmetric access where one technology dominates. In indoor environments where both WiFi…