Abstract: A method for performing random access by a User Equipment (UE) in a wireless network, comprises configuring at least one UE transmit beam for a transmission of a random access signal, generating the at least one UE transmit beam using an antenna array according to the configuration, and transmitting the random access signal to a base station (BS) on the at least one UE transmit beam. An user equipment for performing random access in a wireless network, the User Equipment comprises a processing circuit configured to configure at least one UE transmit beam for a transmission of a random access signal, and generate the at least one UE transmit beam using an antenna array according to the configuration, and transmit the random access signal to the Base Station (BS) on the at least one UE transmit beam.

Abstract: A method and apparatus for simultaneously communicating on at least two carrier frequencies, of which at least one carrier frequency is a licensed band and at least one carrier frequency is an unlicensed band, includes broadcasting an operating status of the unlicensed band to a receiver device, collecting feedback data regarding channel conditions from the receiver device for both the licensed band and unlicensed band, determining, when a bandwidth request is received from the receiver device, whether to use the unlicensed band based on the channel conditions, transmitting an unlicensed band scheduling indication to the receiver device, and communicating with the receiver device using both the licensed band and the unlicensed band according to the transmitted unlicensed band scheduling indication.

Abstract: A method for operating a station (STA) in a wireless local area network (WLAN). The method comprises receiving a resource status request from an access point (AP) communicating with the STA, transmitting a resource status response including an access category (AC) information of UL data that is identified using a traffic identifier. The AC information corresponds to a set of DL queues and a set of UL queues configured at the AP to schedule the STA. The method further comprises receiving a trigger frame from the AP, wherein the trigger frame includes scheduling information of the UL data based on the AC information included in the transmitted resource status response to the AP and processing the scheduling information included in the trigger frame to transmit the UL data to the AP.

Abstract: An apparatus and a method for providing a relay service in a Base Station (BS) of a communication system are provided. The method includes detecting a communication state with a backhaul of the communication system, transmitting backhaul error occurrence information to at least one Mobile Station (MS) located in a service coverage area when communication with the backhaul is interrupted, selecting a neighbor BS from among one or more neighbor BSs as a target BS, and providing a relay service by connecting with the target BS.

Abstract: A method for reducing power consumption of a macro Base Station (BS) in a radio communication system is provided. The method includes transmitting a preamble through at least one mini BS installed within a service coverage area of the macro BS, and transmitting a power-off command to the at least one mini BS after being switched into a power-on state, upon reception of access request information through the at least one mini BS from a terminal that received the preamble.

Abstract: A method, station, and access point for transmitting in a wireless local area network. A method for operating the station includes receiving a beacon signal from an access point in the wireless local area network. The method also includes identifying from the beacon signal a target transmission time of a trigger frame to be transmitted by the access point for an uplink multi-user transmission. A method for operating the access point includes transmitting, to one or more stations in the wireless local area network, a beacon signal that indicates a target transmission time of a trigger frame to be transmitted by the access point for an uplink multi-user transmission.

Abstract: A communication system includes a plurality of eNodeBs (eNBs) configured to serve one or more user equipments (UEs). The plurality of eNBs includes a first eNB and a second eNB. The first eNB is configured to wirelessly communicate on a resource with the second eNB. The resource includes a time resource and/or a frequency resource. The first and second eNBs are configured to cooperatively serve the one or more UEs. The first and second eNBs are configured to engage in wireless communication following a predetermined schedule known to the plurality of eNBs.

Abstract: Methods and apparatuses are provided for operating a Mobile Station (MS). A service flow is established with a Base Station (BS). Data is transmitted through the service flow to the BS at an access admission time. A first group control signal indicating a data communication interruption for the service flow is received from the BS at an access restriction time. Transmission of the data to the BS is ceased together with the ceasing of a data transmission from another MS of a group according to the first group control signal.

Abstract: Base station (BS) and mobile station (MS) methods and apparatus are provided. The BS configures an uplink sounding channel made up of at least one OFDM symbol in an uplink slot. The BS signals to the MS use and location of different configurations of the uplink sounding channel via a system configuration broadcast message. The uplink sounding channel comprises OFDM symbols where one or more of a subcarrier spacing and a sampling frequency is different from that of OFDM symbol used for data transmission. Each OFDM symbol comprises a sounding reference symbol corresponding to at least one transmit beam and is received by at least one receive beam to form at least one transmit-receive beam pair. The at least one transmit-receive beam pair for UL-SRS in different OFDM symbols are different. The sounding channel configuration is based on information received from neighboring BSs via inter-BS coordination over a pre-defined interface.

Abstract: Methods and apparatuses for association in a beamformed wireless area network (WLAN) are provided. A method for operating a station (STA) includes randomly selecting a plurality of sector sweep frames for association beam transmission within a frame-aligned transmit sector sweep duration in an association beamforming training duration of a beacon interval, transmitting a beam in each of the randomly selected sector sweep frames, and receiving sector sweep feedback from an access point (AP). A method for operating the AP includes receiving at least one transmission from one or more STAs on at least one of randomly selected sector sweep frames within the frame-aligned transmit sector sweep duration, selecting a sector identifier for transmissions from each of the one or more STAs based on the at least one received transmission, and transmitting grouped sector sweep feedback indicating the selected sector identifier for transmissions from each of the one or more STAs.

Abstract: A relay including a receiver to receive from a base station, data, a first data frame, and a second data frame, the first data frame includes data and data transmission time information associated with the data, and the second data frame includes map information corresponding to the data and map information transmission time information associated with the map information; a data frame computation unit to compute a third data frame and a fourth data frame, wherein the third data frame is used to transmit the data to a terminal and the fourth data frame is used to transmit the map information to the terminal; and a transmitter to transmit the data to the terminal using the map information when the third data frame is the same as the fourth data frame.

Abstract: Provided is a method for managing a security key for communication authentication with a Mobile Station (MS) in a communication system. The method includes acquiring a first authentication key by performing an authentication procedure for the communication authentication in a cloud cell having member Base Stations (BSs) that include a master BS and at least one slave BS for providing a service to the MS; and communicating with at least one member BS using a first encryption key that is generated using the first authentication key.

Abstract: A receiver, such as a mobile station or base station, includes a sliding window-decoder. An antenna in the receiver is configured to receive a protograph-based spatially coupled low density parity check (SC-LDPC) code from a transmitter. The sliding window-decoder is configured to perform a SC-LDPC decoding operation on the SC-LDPC code using a sliding window. The SC-LDPC code includes a parity check matrix. The sliding window includes a subset of protograph sections on which decoding calculations are iteratively performed. The sliding window-decoder performs a stopping rule configured to cease the decoding calculations as a function of a syndrome of one or more check nodes (CNs) in the sliding window.

Abstract: A method for performing communication by a cellular base station in a wireless communication system is provided. The method includes performing channel contention for occupying a channel of an unlicensed band, if the channel of the unlicensed band is occupied, the cellular base station transmits a first message including information about a time period in which the channel of the unlicensed band is usable, to at least one first User Equipment (UE) that performs communication in the channel of the unlicensed band using a first communication scheme, and communicating with a second UE using a second communication scheme different from the first communication scheme in the channel of the unlicensed band during a time period corresponding to the time period information. The second communication scheme corresponds to a cellular communication scheme, and the first message is transmitted to the at least one first UE based on the first communication scheme.

Abstract: A base station, a wireless terminal and a communication method of a wireless communication system are provided. The base station includes a receiver for receiving a signal from a wireless terminal or another base station, a transmitter for transmitting a signal to the wireless terminal or the another base station, and a controller for generating resource scheduling or control information for communication of the wireless terminal in a cell including at least two base stations included in a moving path of the wireless terminal and for transmitting the generated resource scheduling or control information to the wireless terminal and at least one of the base stations included in the cell.

Abstract: A user equipment, apparatus, and method are provided for wireless communication using an IG-OFDM structure. An apparatus is configured to transmit a known reference signal. The apparatus is configured to receive, in response to the reference signal and from at least one user equipment (UE), capability information that includes at least one of the sub-band bandwidth or number of independently decodable sub-bands that can be dynamically turned on or off by the at least one UE. The apparatus is configured to define an interleaved guard OFDM (IG-OFDM) structure according to the received capability information, the IG-OFDM structure including guard tones distributed within an OFDM symbol where there is no signal transmission on these guard tones. The apparatus is configured to communicate with the at least one UE using a transmitted waveform that is shaped according to the IG-OFDM structure.

Abstract: A method of providing multiple station beam refinement in a mmWave wireless network comprising an access point (AP) and a plurality of stations (STAs) is provided. The method includes providing an AP configured to selectively transmit wireless signals to a plurality of directional sectors and to selectively receive wireless signals from the plurality of directional sectors. The method further includes operating the AP to at least one of provide simultaneous transmit beam refinement for the plurality of STAs, provide simultaneous receive beam refinement for the plurality of STAs, receive simultaneous transmit beam refinement from the plurality of STAs, and receive simultaneous receive beam refinement from the plurality of STAs.

Abstract: To retain a beam direction of beamforming in a wireless communication system, an apparatus for the beamforming includes a detector for measuring change of at least one of a movement and a motion of the apparatus; and a processor for determining a beam control parameter for aligning a beam direction with a counterpart apparatus by compensating for the change of the beam direction according to at least one of the movement and the motion.

Abstract: A method for setting up a radio front haul link by a serving Base Station (BS) in a cooperative communication system is provided. The method includes receiving a measurement result report message including a measurement result for each of a serving BS and neighbor BSs, determining at least one neighbor BS with which the serving BS will set up a radio front haul link according to the measurement result for each of the serving BS and the neighbor BSs, and performing a radio front haul link set up operation with the at least one neighbor BS.

Abstract: An AP receives, from one or more STAs, an uplink orthogonal frequency division multiple access based block acknowledgement response in an 802.11 based wireless network. The AP transmits the downlink allocation for the downlink frame to the plurality of mobile devices, wherein the order of the plurality of mobile devices in the downlink allocation indicates respective uplink resource assignments. The STA receives a downlink frame with an allocation comprising the listing of a plurality of mobile devices for which data is transmitted in the downlink frame. The STA identifies an uplink resource allocation as a function of a location of a first mobile device within the listing of the plurality of mobile devices. The STA then transmits an acknowledgment on the uplink resource allocation corresponding to the location of a first mobile device within the listing of the plurality of mobile devices.