1. A method of exchanging measurements in wireless communications, the method comprising: receiving a measurement request with a Media Access Control (MAC) Layer Management Entity (MLME) in a wireless transmit and receive unit (WTRU) from a station management entity (SME) of an access point (AP), wherein the measurement request includes a request for a measurement of a parameter and the measurement request is a service primitive message between the SME of the AP and the MLME of the WTRU, where the SME of the AP is a layer-independent entity, wherein the service request is carried in a transmit power control (TPC) frame; performing one or more physical measurements with the MLME of the WTRU; forwarding results of the one or more physical measurements to a SME of the WTRU; storing the results on a management information base (MIB) of the WTRU; transmitting a measurement report message as a service primitive message from the MLME of the WTRU to the AP, wherein the measurement report includes the requested measurement of the parameter; and storing the requested measurement of the parameter in a management information base (MIB) of the AP.