  Instantaneous measurements of the electromagnetic field (EMF) strength do not
reflect the maximum exposure levels possible in a given location. An
extrapolation factor needs to be applied to the measurements before comparing
them against the local exposure guidelines or recommendations for compliance
evaluation. For the fifth generation (5G) networks, a standardized approach for
extrapolating EMF values is yet to be defined. This work provides an overview
of the state-of-the-art research that focuses on estimating the maximum EMF
exposure caused by radiation from 5G base stations. It also considers current
efforts by national and international organizations to establish standardized
methods for extrapolating the EMF measurements which is necessary in
investigating conformance with the EMF guidelines and regulations.
