What is MCL (Maximum coupling loss)?

Maximum coupling loss (MCL) is characterized as the maximal total channel loss among the User Equipment (UE) and eNodeB (eNB) antenna ports at which the information administration can in any case be conveyed. It incorporates antenna gains, path loss, shadowing and some other impairments. The power of connection is depend on MCL. NB-IoT needs 20 dB of maximum coupling loss, and then reaches up to 164 dB of MCL to serve end devices in deep coverage.