Abstract:
The present invention discloses a method for a base station to transmit a synchronization signal block in a wireless communication system. Particularly, the method includes the steps of mapping a plurality of synchronization blocks to a plurality of symbols within a specific time unit, and transmitting a plurality of the synchronization signal blocks mapped to a plurality of the symbols to a user equipment. In this case, at least one synchronization signal block is mapped to each of half time units having a half-length of the specific time unit.
Abstract:
A method and apparatus for communicating demodulation reference signals (DMRSs) for a PBCH (Physical Broadcast Channel) signal are disclosed. The method comprises mapping a primary synchronization signal (PSS) and a secondary synchronization signal (SSS) to resource elements on a first group of OFDM (Orthogonal Frequency Divisional Multiplex) symbols within a synchronization signal (SS) block. Here, the first group of OFDM symbols includes two OFDM symbols. The method also comprises mapping the PBCH signal to resource elements on a second group of OFDM symbols within the SS block. Here, the second group of OFDM symbols includes two or more OFDM symbols. Further, the method comprises mapping the DMRSs for the PBCH signal to the resource elements on the second group of OFDM symbols within the SS block.
Abstract:
A method and an apparatus for transmitting/receiving downlink control information are provided. Downlink control information about a data channel may be transmitted through one of a plurality of decoding candidates. Depending on whether the data channel is based on a first sub-frame or a second sub-frame, the downlink control information is transmitted through one of the candidates for the first sub-frame or one of the candidates for the second sub-frame, from among the plurality of decoding candidates. The second sub-frame is shorter than the first sub-frame and can be set within the first sub-frame.
Abstract:
A method is provided for receiving a user equipment (UE) specific reference signal based-downlink data channel by a UE in a wireless communication system. The UE receives, from a network, a downlink control channel including either first scheduling information or second scheduling information, and receives the UE-specific reference signal based-downlink data channel from the network based on the downlink control channel. When the downlink control channel includes the first scheduling information, antenna ports of a certain reference signal which can be assumed to be quasi co-located with antenna ports of a UE-specific reference signal is configured by an indicator indicating one of two or more parameters configured by a higher layer. When the downlink control channel includes the second scheduling information, the antenna ports of a certain reference signal is configured by a parameter of a minimum index among the two or more parameters.
Abstract:
The present invention relates to a wireless communication system. A method for reporting CSI (Channel State Information) in a cooperative multi-point (CoMP) wireless communication system, the method performed by a user equipment (UE) and comprising receiving first resource configuration information for a CSI-RS (Channel-State Information-Reference Signal) and second resource configuration information for interference measurement; and calculating CSI using the first resource configuration information and the second resource configuration information, the CSI being for one or more base stations (BSs) among a plurality of BSs participating the COMP, wherein an interference measurement resource according to the second resource configuration information exists in a union of zero-power CSI-RS resources of each of the plurality of BSs.
Abstract:
The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for transceiving channel availability query and response in a wireless communication system. According to the present invention, a scheme is provided to enable devices which operate in TVWS to request/response information on an available channel in a plurality of geographical locations in a more accurate and efficient manner.
Abstract:
The present invention relates to a method and apparatus for performing wireless communication, and includes: transmitting a channel scheduling request frame for querying scheduling information to a database device, the scheduling information being on one or more channels the enabling station wants to query, receiving a channel scheduling response frame including a channel number field and a channel availability duration field from the database device, the channel scheduling response frame not including information on from when a channel identified by the channel number field is available for operation, the channel availability duration field indicating a duration of time during which the channel identified by the channel number field is available for operation, and taking the specific time receiving the channel scheduling response frame as a starting time of channel availability of the channel identified by the channel number field of the channel scheduling response frame.
Abstract:
The present invention relates to a method and apparatus for channel availability query on multiple locations in a wireless local area network system. A method for a station (STA) to perform a channel query procedure in a wireless communication system comprises: transmitting, at a first STA corresponding to a channel availability query requesting STA, a first message to a second STA supporting the channel availability query procedure, wherein the second STA corresponds to a channel availability query responding STA, wherein the first message comprises device location information of one or more locations for the channel availability query; and receiving, at the first STA from the second STA, a second message comprising channel availability information, wherein the channel availability information is commonly applicable to multiple locations within an area, when the device location information of the first message is for the multiple location within the area.
Abstract:
A method of transmitting a White Space Map information in a wireless local area network system (WLAN) is disclosed. A method of transmitting a white space map information from a first station to a second station in a regulatory domain where a licensed device and an unlicensed device are permitted to operate together in a wireless local area network (WLAN) comprises acquiring a first list of available channels at each location of a plurality of locations from a regulatory database; determining a second list of available channels at a white space zone (WSZ) using the first list of available channels at each location of a plurality of locations; and transmitting, to the second station, one of a beacon frame, a probe response frame and a white space map announcement frame comprising a white space map (WSM) element, the WSM element including information of the WSZ and the second list of available channels, wherein the WSZ is a geographical area in which commonavailable channels are set.
Abstract:
A method of dynamic station enablement procedure in a wireless local area network (WLAN) is disclosed. A method of performing an enablement procedure by a first station in a regulatory domain where a licensed device and an unlicensed device are permitted to operate together in a wireless local area network (WLAN) comprises receiving, from a second station, an enabling signal including advertisement protocol element with an advertisement protocol identification (ID) field which indicates an advertisement protocol the second station supports; and exchanging DSE (dynamic station enablement) related messages with the second station using a GAS (generic advertisement service) protocol.