What is eDRX (Extended discontinuous reception)?

eDRX is created by portable network normalization body 3GPP and presented in 3GPP Rel.13. The eDRX empowers application engineers to change how long an edge device stays in low-power sleep mode before it wakes up to listen for any network indications for information. The maximum sleep time for eDRX range from as long as 43 minutes for devices utilizing LTE-M LPWA networks, to as long as three hours for devices utilizing NB-IoT LPWA networks. The minimum sleep time for LTE-M can be 320 milliseconds and for NB-IoT is 10.24 seconds.