Determination of the position of devices may be useful in various communication systems. For example, wireless communication systems that support emergency services may benefit from being able to make a vertical position determination of user equipment and/or network elements within a building or in other indoor environments, such as caves. A method can be implemented by a processor of a base station. The method can include receiving from at least one user equipment, at least one report based on at least a signal strength of a wireless connection between the at least one user equipment and the base station. The method can also include determining a vertical position of the base station, from the at least one report.