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.

The present invention relates to MAC layer communication for parallel random access procedures of dual connectivity. In this scheme, a first MAC entity of a user equipment informs the initiation of the first random access procedure to a second MAC entity of the UE; and informs the completion of the first random access procedure to the second MAC entity, when the first random access procedure is finished.

The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for transmitting, to a second UE, a first MAC PDU (Medium Access Control Protocol Data Unit) including a first Identity (ID) of the first UE; receiving, from the second UE, a second MAC PDU including a second ID; checking whether the second ID is same as the first ID or not; generating a third ID of the first UE if the second ID is same as the first ID and transmitting, to the second UE, a third MAC PDU including the third ID of the first UE.

Methods and apparatus are described by which a wireless station transmits information to an access point in response to a short feedback request. The response to the short feedback request is transmitted as either energy or lack thereof in one or more long training fields transmitted in a preamble of a physical layer packet. Short feedback trigger frames for requesting the short feedback are also described.

Systems, devices, and methods for performing coordinated clear channel assessments (CCAs) in a shared radiofrequency band are provided. In one aspect, a method of wireless communication performed by a first wireless communication device includes: receiving a control signal indicating a CCA trigger associated with the first wireless communication device and a second wireless communication device; performing, based on the CCA trigger, a CCA; transmitting, to the second wireless communication device based on the CCA, a first CCA success signal; receiving, from the second wireless communication device, a second CCA success signal; initiating, based on the first CCA success signal and the second CCA success signal, a channel occupancy time (COT); and amplifying and forwarding a communication in the COT.

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.

A method and apparatus may be used to broadcast a first beacon and a second beacon in a beacon interval. The first beacon may include an indicator that indicates whether a second beacon will be transmitted within the beacon interval. The first beacon may be a legacy beacon and the second beacon may be a non-legacy beacon. A legacy beacon may be decodable by any station (STA) and a non-legacy beacon may be decodable only by non-legacy STAs.

The present invention relates to a communication between MAC layer entity and PHY layer entity for parallel random access procedures of dual connectivity. In this scheme, a first PHY entity of a user equipment informs a failure of a random access preamble transmission to a first MAC entity of the UE. Then, the first MAC entity continues or stops a random access procedure without performing procedures for a random access failure.

Disclosed is a method for receiving a multimedia content message by a vehicle to everything (V2X) communication apparatus. A method for receiving a multimedia content message by a vehicle to everything (V2X) communication apparatus according to an embodiment of the present invention includes: receiving a multimedia content message; parsing the multimedia content message; and acquiring a multimedia content included in the multimedia content message or a content segment which is a part of the multimedia content.

A first communication device generates and transmits a first communication frame corresponding to a request to participate in a block acknowledgment procedure. The first communication frame includes: a first field indicating a number of buffers requested to be allocated at a second communication device for buffering data units to be transmitted by the first communication device, and a second field indicating a first maximum bitmap length supported by the first communication device. The first communication device receives a second communication frame corresponding to a response to the first communication frame. The second communication frame includes: a third field indicating a number of buffers allocated at the second communication device for buffering the data units transmitted by the first communication device, and a fourth field indicating a second maximum bitmap length supported by the second communication device. The first communication device performs the block acknowledgment procedure in accordance with the second maximum bitmap length.