Provided is a method for receiving a frame, which is to be performed by a station (STA) in a wireless LAN system. The method includes receiving a multicast frame from an access point (AP). The multicast frame includes a medium access control (MAC) header. The MAC header includes a transmitter address (TA) field and a receiver address (RA) field. The RA field includes a multicast association identifier for identifying an STA group including said STA.

A portable endpoint device comprises a first virtual device and a second virtual device integrated in a same single unit and configured such that the first virtual device and the second virtual device are configured to allow communication therewith as virtually different physical devices despite being integrated in the same single unit. In operation, the device is configured to receive a first signal from another endpoint device to indicate the availability of the another endpoint device for attachment; send, to the another endpoint device a second signal utilizing first scheduling-related information, the second signal including a first one of a plurality of identifiers for unique identification in association with the portable endpoint device; receive, from the another endpoint device a third signal that is sent in response to the second signal; and receive, from the another endpoint device data utilizing a second one of the identifiers for identification in association with the portable endpoint device.

A distributed antenna system is provided that frequency shifts the output of one or more microcells to a 60 GHz or higher frequency range for transmission to a set of distributed antennas. The cellular band outputs of these microcell base station devices are used to modulate a 60 GHz (or higher) carrier wave, yielding a group of subcarriers on the 60 GHz carrier wave. This group will then be transmitted in the air via analog microwave RF unit, after which it can be repeated or radiated to the surrounding area. The repeaters amplify the signal and resend it on the air again toward the next repeater. In places where a microcell is required, the 60 GHz signal is shifted in frequency back to its original frequency (e.g., the 1.9 GHz cellular band) and radiated locally to nearby mobile devices.

Provided is a method for receiving a frame, which is to be performed by a station (STA) in a wireless LAN system. The method includes receiving a multicast frame from an access point (AP). The multicast frame includes a medium access control (MAC) header. The MAC header includes a transmitter address (TA) field and a receiver address (RA) field. The RA field includes a multicast association identifier for identifying an STA group including said STA.