Patent application number | Description | Published |
20110286405 | METHOD AND APPARATUS FOR DYNAMIC STATION ENABLEMENT PROCEDURE IN A WIRELESS LOCAL AREA NETWORK SYSTEM - 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. | 11-24-2011 |
20110299481 | METHOD AND APPARATUS FOR A STATION TO OPERATE WITHIN WLAN SYSTEM - Methods and apparatuses for a specific station, operating as a non-AP (Access Point) station permitted to operate within available channels not used by a licensed device, to operate as an AP station in a Wireless Local Area Network (WLAN) are disclosed. A specific protocol related to a registration of a station's location to operate within a white space id defined whose Information IDs comprises a registration request and a registration response. Using the defined registration request and registration response, the station can register its geographical location with a Registered Location Server (RLS), and operate as an AP STA within WS. | 12-08-2011 |
20120120842 | METHOD AND APPARATUS FOR TRANSMITTING REFERENCE SIGNAL IN MULTIPLE INPUT MULTIPLE OUTPUT COMMUNICATION SYSTEM - Disclosed is a method for allocating a reerence signal, in a method for transmitting a Channel State Information-Reference Reference Signal (CSI-RS) for measuring a transmission channel according to each antenna and a data signal in a broadband wireless communication system based on a multiple input multiple output (MIMO) scheme through a plurality of antennas. | 05-17-2012 |
20120120903 | METHOD AND APPARATUS FOR TRANSMITTING REFERENCE SIGNAL FOR REDUCING INTER-CELL INTERFERENCE IN MULTIPLE INPUT MULTIPLE OUTPUT COMMUNICATION SYSTEM - Disclosed is a method for transmitting a reference signal, in a method for transmitting a Channel State Information-Reference Reference Signal (CSI-RS) for measuring a transmission channel according to each antenna and a data signal in a broadband wireless communication system based on a MIMO scheme through a plurality of antennas. | 05-17-2012 |
20130072232 | Method and Apparatus for Performing a Channel Availability Query for a Plurality of Locations - 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. | 03-21-2013 |
20130109403 | Method for Operating a Station in a White Space, and Apparatus for Same | 05-02-2013 |
20130114586 | Method and Apparatus for Receiving Multi-Band Information in a WLAN System - The present invention relates to a method and apparatus for receiving multi-band information in a WLAN system. The method for receiving multi-band information by a first station (STA), operating as an unlicensed device, within an available channel which is not used by a licensed device in a white space band of a WLAN system according to one aspect of the present invention comprises: allowing the first station to receive, from a second station, information about a first band and a second band through the first band that is currently being communicated with the first and second stations; and allowing the first station to communication with the second station through the second band, wherein the first station and the second station are multi-band stations that support the first band and the second band. | 05-09-2013 |
20130122951 | Method and Apparatus for Scanning Existing Networks in the White Space - A method and an apparatus for scanning existing networks in TV White Space are disclosed. For scanning existing networks at a station to operate as an unlicensed device in a regulatory domain where a licensed device and the unlicensed device are permitted to operate, the method comprises: receiving a white space map (WSM) comprising information for available channels to be used for the unlicensed device to operate a wireless local area network (WLAN) operation and maximum transmission powers allowed for each of the available channels from an enabling station, wherein the enabling station is a station determining the available channels at its location using its own geographic location identification and a regulatory database access capability; and scanning the existing networks on the available channels identified within the received WSM. | 05-16-2013 |
20130143613 | Method and Device for Transmitting and Receiving Available Channel Information Within White Space Band - The present invention relates to a method for a first station (STA) comprising: obtaining available channel information by accessing a database that manages the available channel information within the white space band, and transmitting a white space map (WSM) generated according to the available channel information to a second STA, the WSM includes a channel map field having a variable length, a length field including the length of the channel map field, and map ID information indicating a type of the WSM and whether the WSM being updated; and if the available channel information obtained from the DB indicates that no available channel exists within the white space band, a map ID is set to indicate that the WSM is the updated WSM, and the first STA transmits the WSM which is set as the length field to indicate that the length of the channel map field is 0. | 06-06-2013 |
20130156007 | Handover in White Space Band - A station forms a connection with a first access point (AP): a particular station for storing first active station identification information of an active station that manages the activation of the station serviced by said first AP accesses a region serviced by a second AP, and receives from said second AP a message for containing second active station identification information of the active station that manages the activation of the station serviced by said second AP; said first active station identification information is compared with said second active station identification information; and if said first active station identification information is different from said second active station identification information, a procedure for changing the active station and a handover to said second AP are performed to a second active STA corresponding to said second active station identification information. | 06-20-2013 |
20130170458 | METHOD AND APPARATUS FOR A STATION TO OPERATE WITHIN WLAN SYSTEM - Methods and apparatuses for a specific station, operating as a non-AP (Access Point) station permitted to operate within available channels not used by a licensed device, to operate as an AP station in a Wireless Local Area Network (WLAN) are disclosed. A specific protocol related to a registration of a station's location to operate within a white space id defined whose Information IDs comprises a registration request and a registration response. Using the defined registration request and registration response, the station can register its geographical location with a Registered Location Server (RLS), and operate as an AP STA within WS. | 07-04-2013 |
20130177007 | Method and Apparatus of Transmitting a White Space Map Information in a Wireless Local Area Network System - 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 transmitting, from the first station, one of a beacon frame, a probe response frame and a white space map announcement frame comprising a white space map (WSM) element comprising information for first available channels, which are available for the unlicensed device, to the second station, wherein the WSM element comprises a device type field indicating which device type the list of the fist available channels is for. | 07-11-2013 |
20130195096 | Method and Apparatus for Scanning Existing Networks in TVWS - A method and an apparatus for scanning existing networks in TV White Space are disclosed. For scanning existing networks at a station to operate as an unlicensed device in a regulatory domain where a licensed device and the unlicensed device are permitted to operate, the method comprises: receiving a white space map (WSM) comprising information for available channels to be used for the unlicensed device to operate a wireless local area network (WLAN) operation and maximum transmission powers allowed for each of the available channels from an enabling station, wherein the enabling station is a station determining the available channels at its location using its own geographic location identification and a regulatory database access capability; and scanning the existing networks on the available channels identified within the received WSM. | 08-01-2013 |
20130205313 | Method and Apparatus for Transmitting and Receiving a Measured Report Frame in a Wireless Local Area Network System - A method of transmitting and receiving a measurement report frame in a wireless local area network (WLAN) is disclosed. A method of transmitting a measurement report frame form 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) comprising: receiving, at the first station, a measurement request frame from the second station; and transmitting, to the second station, the measurement report frame including a Primary Service Signal Map field indicating which TV channels are occupied by a primary service signal, wherein the primary service signal is a signal that requires protection by regulation. | 08-08-2013 |
20130231108 | Method and Apparatus for Operating Within White Space Band Using Message Indicating Whether Available Channel Information is Valid in Wireless System - A method and apparatus for operating within a white space band using a message indicating whether an available channel information is valid in the wireless system are disclosed. In a method for a first station (STA) to operate as an unlicensed device which is permitted to operate on an available channel within a White Space (WS) band of a wireless system, comprises: receiving a message indicating whether an available channel information of the first STA is valid from a second STA, wherein the available channel is a channel not used by a licensed device, wherein the message includes a Map ID of a current valid available channel information; and determining whether an existing available channel information of the first STA is valid by comparing a Map ID of the existing available channel information of the first STA with the Map ID included in the received message. | 09-05-2013 |
20130258994 | Method and Apparatus for Transmitting Channel Information in Cognitive Radio Network and Method and Apparatus for Performing Channel Switching - A method and apparatus for transmitting channel information used by a station form among TV white space channels, and a method and apparatus for performing channel switching are disclosed. A method for transmitting information of a channel used by a station from among TV white space channels includes determining one or more channels used by the station from among channels contained in a plurality of OFDM blocks, wherein each OFDM block includes one or more contiguous channels from among the TV white space channels, generating a message including first information indicating the lowest channel number from among channels contained in a first OFDM block from among the plurality of OFDM blocks, second information indicating the lowest channel number from among channels contained in a second OFDM block, third information indicating the one or more channels used by the station as bitmap information, and fourth information indicating a total amount of bandwidth used by the station, and transmitting the generated message. | 10-03-2013 |
20130294436 | METHOD AND APPARATUS FOR TRANSCEIVING A CONTACT VERIFICATION SIGNAL IN A WIRELESS COMMUNICATION SYSTEM - The present document related to a method and apparatus for transceiving a signal capable of verifying the validity of an available channel in a wireless communication system. According to the present invention, a scheme for transceiving available channel information, a scheme for requesting/responding to a channel validity inquiry, and a scheme for transceiving a contact verification signal are provided, and accordingly, a scheme for supporting the accurate and efficient operation of an unlicensed device while protecting a licensed device in a whitespace band is provided. | 11-07-2013 |
20130308577 | METHOD AND APPARATUS OF OPERATING CHANNEL REQUEST AND RESPONDING TO THE OPERATING CHANNEL REQUEST IN A WIRELESS LOCAL AREA NETWORK SYSTEM - A method for operating channel request and responding to the operating channel request in a wireless local area network (WLAN) is disclosed. A method of operating channel request by a first station in a regulatory domain where an unlicensed device is permitted to operate at a given time in a given geographical area with regard to a licensed device in a wireless local area network (WLAN) comprises transmitting, to a second station, first frame including a first operating class field and a first channel number field, wherein the first operating class field indicates a number of an operating class of a first channel included in a first channel set for operating channel request and the first channel number field indicates a number of the first channel; and receiving, from the second station, second frame including a second operating class field and a second channel number field, wherein the second operating class field indicates a number of a operating class of a second channel included in a second channel set granted by the second station and the second channel number field indicates a number of the second channel. | 11-21-2013 |
20140044073 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING CHANNEL INFORMATION IN WIRELESS COMMUNICATION SYSTEM - One embodiment of the present invention relates to a method for transmitting channel information in a wireless communication system. Disclosed is method for transmitting channel information, comprising the steps of: generating a frame which includes an operating class field and a channel number field; and transmitting the generated frame, wherein the channel number field indicates a number of a wireless local area network (WLAN) channel allocated according to available channel information. | 02-13-2014 |
20140126503 | METHOD FOR TRANSMITTING/RECEIVING A SIGNAL IN A WIRELESS COMMUNICATION SYSTEM - According to an embodiment of the present invention, a method of transmitting/receiving a signal of a device using a non-licensed band in a wireless communication system includes: receiving available channel information by a first type device; and determining a first channel for transmitting a signal from the first type device to a second type device, and a second channel for receiving a signal from the second type device, among the available channels. | 05-08-2014 |
20140146804 | METHOD AND DEVICE FOR OFFERING DATABASE ACCESS IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system, and more specifically, to a method and device for offering database access. According to one embodiment of the present invention, a method in which a first station (STA) accesses a database (DB) through a second STA includes the steps of: receiving a beacon or enabling signal in a first STA, operating as a dependent STA, from a second STA, operating as an enabling STA; operating a link setup of the second STA; and accessing the DB through a link with the second STA. | 05-29-2014 |
20140152698 | METHOD FOR OPERATING AUGMENTED REALITY CONTENTS AND DEVICE AND SYSTEM FOR SUPPORTING THE SAME - Disclosed are methods of operating augmented reality (AR) contents, and a device and a system supporting the same. In one method, a real world image is captured using a camera in a portable device. A virtual space corresponding to the real world image is built, by partitioning image elements included in the virtual space into plural background objects and displaying the background objects. Augmented reality contents are generated by mapping one or more user contents onto the background objects. In other embodiments, location information of the portable device is used to obtain AR contents for enhancing captured images. | 06-05-2014 |
20140254540 | Method and Device for Setting Operating Channel in White Space - The present invention relates to a method of setting an operating channel for a second station STA by a first STA in a white space according to an embodiment of the present invention may include: obtaining information on available TV channels from a geographical database GDB; and transmitting, to the second STA, setting information on the operating channel determined based on the information on the available TV channel. If the minimum channel bandwidth supported by the operating channel is W MHz, the operating channel may be defined as one or more of a) a width of one W MHz channel, b) a width of two contiguous W MHz channels, c) a width of four contiguous W MHz channels, d) a width of two non-contiguous W MHz channels, or e) a channel width consisting of two non-contiguous frequency parts, each of which includes two contiguous W MHz channels. | 09-11-2014 |
20140274106 | METHOD AND APPARATUS FOR DYNAMIC STATION ENABLEMENT PROCEDURE IN A WIRELESS LOCAL AREA NETWORK SYSTEM - 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. | 09-18-2014 |
20140293949 | METHOD AND APPARATUS FOR TRANCEIVING NEIGHBOR NETWORK INFORMATION IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system, and more specifically, to a method and an apparatus for transceiving neighbor network information. A method for a first station (STA) to provide neighbor network information to a second STA, according to one embodiment of the present invention, comprises the steps of: receiving a request frame for neighbor network information from the second STA; and transmitting a response frame for neighbor network information to the second STA, wherein the request frame for neighbor network information can comprise at least one item of information about the second STA from among the address, estimated transmission strength, and location. | 10-02-2014 |
20140307634 | Method and Apparatus of Converting TV Channels into WLAN Channels in a Wireless Local Area Network System - A method of converting TV channels into WLAN channels in a wireless local area network system (WLAN) is disclosed. A method of converting TV channels into WLAN channels at an apparatus comprising receiving WSM including a list of available TV channels and finding out a center frequency of each of first WLAN channels which exist on frequency area of the available TV channels using TV channel bandwidth, WLAN channel bandwidth and a starting frequency of each of the available | 10-16-2014 |
20140314032 | Method and Apparatus for Transmitting and Receiving a Whitespace Map in a Wireless Communication System - The present invention relates to a wireless communication system, and more specifically, to a method and apparatus for transmitting and receiving a whitespace map. The method for transmitting whitespace map (WSM) information from a first station (STA) to a second STA includes the steps of: setting a map version bit value included in the WSM information as a predetermined value; and transmitting the WSM information including the predetermined map version bit value to the second STA. | 10-23-2014 |
20140321409 | METHOD AND APPARATUS FOR DETERMINING OPERATING MODE OF DEVICE IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system, and more specifically, to a method and apparatus for determining an operating mode of a device. A method for switching an operating mode of a device from a white-space bandwidth according to one embodiment of the present invention comprises the steps of: starting a timer related to database access if the device is operating in a first operating mode; determining whether a message is received from the database while the timer is in operation; and switching to a second operating mode if a message is not received from the existing database and the timer has expired. | 10-30-2014 |
20150024798 | Method and Apparatus of Transmitting a White Space Map Information in a Wireless Local Area Network System - 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. | 01-22-2015 |
20150043338 | Method for Selecting a Master CM in a Coexistence Network - The present invention relates to a method for requesting the selection of a master management apparatus through a server by a management apparatus enabling television white space (TVWS) apparatuses to coexist in a TVWS. The method includes the steps of: determining whether the trigger condition of the process for selecting the master management apparatus is satisfied; and requesting the selection of the master management apparatus by the server, wherein the master management apparatus is configured to determine a channel selection in the TVWS for terminals connected to the master management apparatus and a slave management apparatus, and the trigger condition can be based on the load balance parameters or geographical coverage parameters of the management apparatus. | 02-12-2015 |
20150078309 | METHOD AND APPARATUS FOR A STATION TO OPERATE WITHIN WLAN SYSTEM - Methods and apparatuses for a specific station, operating as a non-AP (Access Point) station permitted to operate within available channels not used by a licensed device, to operate as an AP station in a Wireless Local Area Network (WLAN) are disclosed. A specific protocol related to a registration of a station's location to operate within a white space id defined whose Information IDs comprises a registration request and a registration response. Using the defined registration request and registration response, the station can register its geographical location with a Registered Location Server (RLS), and operate as an AP STA within WS. | 03-19-2015 |
20150257157 | METHOD AND APPARATUS FOR PERFORMING A CHANNEL AVAILABILITY QUERY FOR A PLURALITY OF LOCATIONS - 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. | 09-10-2015 |
20150271843 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING CHANNEL INFORMATION IN WIRELESS COMMUNICATION SYSTEM - 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. | 09-24-2015 |
Patent application number | Description | Published |
20120170534 | Station Operation Method and Apparatus in TV Whitespace - The present invention relates to a station (hereinafter, ‘STA’) operation method and apparatus in a TV whitespace. In a TVWS band, when an STA operating as an unlicensed device with permission to operate in an available channel not used by a licensed device needs to operate in the TVWS band by acquiring information on the available channel, the STA transmits an available channel information request message to a device having database information; receives, from the device having database information, an ACK message for the available channel information that includes (a) identification information on an available channel, (b) information on the maximum allowable power level in the available channel, and (c) information on valid time of the available channel; and transmits/receives a signal using the information of (a), (b) and (c), i.e., using the maximum allowable power level within the valid time in the available channel. | 07-05-2012 |
20120184318 | Method and Apparatus of Transmitting a White Space Map Information in a Wireless Local Area Network System - 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 common available channels are set. | 07-19-2012 |
20120218956 | Station Operation Method and Apparatus in TV Whitespace - The present invention relates to a station (hereinafter, ‘STA’) operation method and apparatus in a TV whitespace. In a TVWS band, when an STA operating as an unlicensed device with permission to operate in an available channel not used by a licensed device needs to operate in the TVWS band by acquiring information on the available channel, the STA transmits an available channel information request message to a device having database information; receives, from the device having database information, an ACK message for the available channel information that includes (a) identification information on an available channel, (b) information on the maximum allowable power level in the available channel, and (c) information on valid time of the available channel; and transmits/receives a signal using the information of (a), (b) and (c), i.e., using the maximum allowable power level within the valid time in the available channel. | 08-30-2012 |
20120314658 | Station Operation Method and Apparatus in TV Whitespace - The present invention relates to a station (hereinafter, ‘STA’) operation method and apparatus in a TV whitespace. In a TVWS band, when an STA operating as an unlicensed device with permission to operate in an available channel not used by a licensed device needs to operate in the TVWS band by acquiring information on the available channel, the STA transmits an available channel information request message to a device having database information; receives, from the device having database information, an ACK message for the available channel information that includes (a) identification information on an available channel, (b) information on the maximum allowable power level in the available channel, and (c) information on valid time of the available channel; and transmits/receives a signal using the information of (a), (b) and (c), i.e., using the maximum allowable power level within the valid time in the available channel. | 12-13-2012 |
20130130731 | METHOD AND APPARATUS FOR TRANSCEIVING CHANNEL TRANSMIT POWER INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - Disclosed are a method and apparatus for transceiving channel transmit power information in a wireless communication system. According to one embodiment of the present invention, transmit power information for the channel available for the device which operates in a television band may be signaled for each individual channel. | 05-23-2013 |
20130163574 | METHOD AND APPARATUS FOR DISABLING AN ILLEGAL DEVICE IN A WIRELESS LAN SYSTEM - A method for an enabler entity to indicate an event to a manager entity includes transmitting, from the enabler entity to the manager entity, an event indication message indicating an event in a device served by the enabler entity. The enabler entity enables communication between the device and the manager entity and the manager entity exchanges information required for coexistence between enabler entities comprising the enabler entity. The event indication message includes type information indicating that the event indication message is for indicating that a specific device is detected by the device, the specific device operating on a frequency not permitted to the specific device. | 06-27-2013 |
20130237192 | ACCESS METHOD BETWEEN A TERMINAL AND A BASE STATION IN A WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREOF - The present description relates to a method in which a terminal accesses a base station in a wireless communication system and to a terminal thereof. The method includes broadcasting, to at least one base station, an advertisement message containing identification information for advertising existence of the terminal; receiving, from the base station, an inviting message which allows access to the base station; and performing an access procedure with the base station in accordance with the received inviting message. The present description further relates to a method in which a base station accesses a terminal in a wireless communication system, the method including receiving an advertisement message which is broadcasted by the terminal and contains identification information for advertising existence of the terminal; transmitting, to the terminal, an inviting message which allows access to the base station; and performing an access procedure with the terminal in accordance with the inviting message. | 09-12-2013 |
20130267237 | Method and Apparatus for Transceiving Channel Availability Query and Response in a Wireless Communication System - 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. | 10-10-2013 |
20130281109 | Method and Apparatus for Transmitting and Receiving Channel Information in Wireless Communication System - The present invention relates to a method and apparatus for performing communication by obtaining available channel information through an unlicensed device in which operations are permitted within an available channel and is not used by a licensed device in a white space band, includes the steps of: transmitting a message for requesting available channel information to a database device; receiving the available channel information including first information for indicating a format of the available channel information and second information for identifying the available channel, in response to the message for requesting the available channel information; and obtaining the second information using the first information and transmitting and receiving signals within the available channel corresponding to the second information, wherein the format of the available channel information can be changed according to country. | 10-24-2013 |
20130329693 | Channel Switching to a White Space Band Through TDLS - When channel switching to a channel in a white space band is performed through tunneled direct link setup (TDLS) in a wireless local area network (WLAN) system, it is confirmed whether or not a white space band between STAs is operable by directly including white space band performance between communication target STAs and device identifier information in a TDLS request/response message. Thus, one STA performs a channel availability query (CAQ) procedure in order to obtain available channel information, and a TDLS channel switching request/response message is exchanged by selecting a target channel in an available channel. Therefore, TDLS-based channel switching to a white space band is efficiently performed. | 12-12-2013 |
20130336277 | MESH NETWORK CONFIGURATION IN A WHITE SPACE BAND - The invention relates to a method for efficiently configuring a mesh network in a white space band and to a device therefor. In order to configure a mesh network in a white space band, a first station, which is accessible to a geographical position database through direct Internet access, notifies at least one second station through a gate announcement frame, for which the first station itself serves as a mesh gate; at least one second station receives a first multi-hop management action frame including position information on each of at least one, mesh point that subscribes to a mesh network; and a second multi-hop management action frame including information on an available channel in the white space is transmitted to at least one mesh point. Therefore, a mesh network may be configured in a white space band. | 12-19-2013 |
20140029516 | METHOD AND APPARATUS FOR SIMULTANEOUSLY PERFORMING FREQUENCY RESOURCE SENSING AND DATA TRANSMISSION IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for simultaneously performing frequency resource sensing and data transmission in a wireless communication system are disclosed. The method for performing frequency band sensing or data transmission and reception at a pico Base Station (BS) within the coverage of a macro BS in a wireless communication system includes determining the number of (M | 01-30-2014 |
20140092779 | METHOD AND APPARATUS FOR FINDING A NEIGHBOR IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for finding a neighbor. According to one embodiment of the present invention, a method for setting an Internet protocol (IP) by a station (STA) of a wireless communication network comprises: a step of receiving network prefix information; a step of transmitting an initial generic advertisement service (GAS) request frame including the set IP address information to an access point (AP). According to the present invention, a novel method of setting an IP is proposed which can be performed independently of, or prior to the completion of, an initial link set-up process. | 04-03-2014 |
20140135032 | METHOD AND APPARATUS FOR TRANSCEIVING A CONTACT VERIFICATION SIGNAL REGARDING AVAILABLE CHANNELS IN A PLURALITY OF LOCATIONS IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a method of receiving available channel information on K (K≧2) numbers of locations by a first type station (STA) from a second type STA in a wireless communication system includes: receiving a channel availability query (CAQ) response message, wherein the CAQ response message includes a field of the numbers (K) of the locations and K numbers of available channel list fields configured with information on an available channel list for each of the K numbers of locations, from the second type STA, and performing a communication in a white space using an available channel included in an available channel list for a single location among the K numbers of locations, wherein the K numbers of available channel list fields are configured with a Map ID field and a field of N (N≧1) numbers of available channels are repeated K times. | 05-15-2014 |
20140254537 | METHOD AND APPARATUS FOR CONTROLLING INTER-CELL INTERFERENCE IN WIRELESS COMMUNICATION SYSTEM - A method for transmitting reduced power-almost blank subframe (r-ABS) setting information from a first cell to a second cell, according to one embodiment of the present invention, comprises a step of the first cell transmitting to the second cell r-ABS pattern information for indicating the r-ABS which is setup by the first cell, and r-ABS power indication information for indicating transmission power of a physical downlink shared channel (PDSCH) of the first cell from the r-ABS, wherein the PDSCH transmission power of the first cell can be set to a transmission power which is low compared to a common subframe. | 09-11-2014 |
20140269597 | METHOD FOR DETERMINING TRANSMISSION POWER INFORMATION OF DOWNLINK SUBFRAME AND APPARATUS THEREFOR - A method for an eNB to transmit a downlink signal to a User Equipment (UE) is disclosed. The method includes transmitting information about a data transmission power within an OFDM symbol in a data region of a downlink subframe to the UE. The information about the data transmission power is determined according to a specific condition and the specific condition includes at least one of presence/absence of a Cell-specific Reference Signal (CRS) within the symbol and a modulation scheme or a Modulation and Coding Scheme (MCS) of the symbol. The downlink subframe is a Non-Zero Power Almost Blank Subframe (NZP ABS) in which signals are transmitted at a lower transmission power than a transmission power of a normal subframe on downlink. | 09-18-2014 |
20140286283 | METHOD AND APPARATUS FOR CONTROLLING INTER-CELL INTERFERENCE IN WIRELESS COMMUNICATION SYSTEM - A method for a base station transmitting transmission power of a subframe to a user equipment, according to one embodiment of the present invention, comprises a step of transmitting downlink control information to the user equipment through a physical downlink control channel (PDCCH), wherein the transmission power information of the subframe is indicated by information related to the PDCCH, and a value of the information related to the PDCCH can be decided based on a predetermined mapping relationship between the transmission power information and the value of the information related to the PDCCH. | 09-25-2014 |
20140293820 | METHOD AND APPARATUS FOR CONTROLLING INTER-CELL INTERFERENCE IN WIRELESS COMMUNICATION SYSTEM - A method for supporting a measurement of a user equipment, according to one embodiment, comprising the steps of: a second cell deciding at least one measurement resource set with respect to the user equipment, based on subframe setting information of a first cell and/or transmission power information of the first cell; and the second cell transmitting to the user equipment information for indicating the at least one measurement resource set that is decided, wherein the subframe setting information of the first cell can include setting information with respect to a first almost blank subframe (ABS) and a second ABS. | 10-02-2014 |
20140301237 | METHOD FOR ACQUIRING INFORMATION ON OCCUPIED CHANNEL OF DEVICE WHICH SUBSCRIBES TO INFORMATION SERVICE IN TELEVISION WHITE SPACE BAND - Provided is a method for acquiring information on an occupied channel of an apparatus (hereinafter, “information service apparatus”) which subscribes to an information service in order to allocate a channel to an apparatus (hereinafter, “management service apparatus”), which is performed by a management apparatus, and comprises: transmitting, to the information service apparatus, an occupied channel query request message for query of information about one or more channels (hereinafter, “occupied channels”) occupied by the information service apparatus; and receiving, from the information service apparatus, an occupied channel query response message including the information about the occupied channels, wherein the occupied channel query request message includes an ID of the information service apparatus and information about a measurement period of the occupied channels, and the information service apparatus and the management service apparatus may be TVWS devices. | 10-09-2014 |
20140301332 | METHOD AND DEVICE FOR INTER CELL INTERFERENCE COORDINATION IN WIRELESS COMMUNICATION SYSTEM - A method in which a second cell receives subframe pattern information on a first cell according to one embodiment of the present application comprises a step in which uplink almost blank subframe (ABS) pattern information and downlink ABS pattern information on the first cell are received by a second cell, wherein the downlink ABS pattern information is not separated into first and second type ABSs set by the first cell, and the first and second type ABS patterns of the first cell can be identified on the basis of the downlink ABS pattern information and the uplink ABS pattern information. | 10-09-2014 |
20140334422 | METHOD AND DEVICE FOR TRANSMITTING AND RECEIVING AVAILABLE CHANNEL INFORMATION BASED ON DIRECTIVITY IN WIRELESS COMMUNICATION SYSTEM - Disclosed are a method and device for transmitting and receiving available channel information based on directivity in a wireless communication system. A method for enabling a station (STA) to receive available channel information in a whitespace band according to one embodiment of the present invention comprises the steps of: determining a current position of the STA and a position at which the direction is changed on a moving path of the STA; determining K (K≧1) operating ranges based on the current position of the STA and the position at which the direction is changed; transmitting a channel availability query (CAQ) request frame for the K operating ranges to a database; and receiving available channel information on the K operating ranges through a CAQ response frame from the database. | 11-13-2014 |
20140347985 | METHOD AND APPARATUS FOR SETTING UP LINK AT HIGH-SPEED IN WIRELESS COMMUNICATION SYSTEM - Disclosed are a method and an apparatus for setting up a session at a high speed in a WLAN system or a LAN LTE system. A method for a station (STA) setting up a link at a high speed in a wireless communication system, according to one embodiment of the present invention, comprises the steps of: transmitting a request frame comprising information related to bandwidth requested by the STA to an access point (AP); and receiving from the AP a response frame, which is decided on the basis of the information related to the bandwidth that is requested, comprising information indicating whether to accommodate the request. | 11-27-2014 |
20140362720 | METHOD AND APPARATUS FOR TRANSMITTING MEASUREMENT REPORT IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for transmitting a measurement report in a wireless communication system are disclosed. The method for transmitting a measurement report at a UE in the wireless communication system includes measuring received strengths and reception frequencies of first and second signals, and transmitting a measurement report including a frequency offset between the first and second signals, if the received strength of the second signal is equal to or larger than a predetermined threshold. The frequency offset is used to support cooperative transmission of transmission points transmitting the first and second signals. | 12-11-2014 |
20150016331 | APPARATUS FOR RECEIVING DOWNLINK SIGNAL IN A WIRELESS COMMUNICATION SYSTEM AND METHOD THEREOF - A method of receiving downlink signal at a user equipment in a wireless communication system is disclosed. The present invention includes receiving an information related to a reference signal of a neighbor cell from a serving cell and performing an interference handling in resources in accordance with the information related to the reference signal of the neighbor cell, wherein the information related to the reference signal of the neighbor cell comprises at least one selected from the group consisting of a cell ID (identity) of the neighbor cell, the number of ports for transmitting the reference signal of the neighbor cell, an frequency information for transmitting the reference signal of the neighbor cell and an time information for transmitting the reference signal of the neighbor cell. | 01-15-2015 |
20150016333 | DISTRIBUTION SYSTEM CONNECTION THROUGH A STATION WORKING AS A NON-ACCESS POINT - The present invention relates to a method and device for performing a connection to a distribution system (DS) through a station working as a non-access point (AP) in a wireless communication system. In particular, any station (referred to hereinafter as ‘a first STA’) works as an AP having DS connection performance in first frequency band wireless local area network (WLAN) communication when performing WLAN communication to connect to a distribution system (DS), wherein a direct link setting procedure is performed with a specific STA (referred to hereinafter as ‘a second STA’) working as a station that is not an AP in second frequency band WLAN communication, in the second frequency band WLAN communication; and a connection is made to the DS through the direct link in the second frequency band WLAN communication. | 01-15-2015 |
20150016419 | METHOD AND APPARATUS FOR ACQUIRING SYSTEM INFORMATION IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus for acquiring system information in a wireless communication system are disclosed. The method for acquiring system information by a user equipment (UE) in a wireless communication system includes: performing a handover from a first cell to a second cell; and acquiring system information of the second cell, wherein a method for acquiring the system information of the second cell is determined according to CRE (Cell Range Extension)-related capability of the UE. | 01-15-2015 |
20150023265 | METHOD FOR RECEIVING DOWNLINK DATA CHANNELS IN MULTICELL-BASED WIRELESS COMMUNICATION SYSTEMS AND APPARATUS FOR SAME - The present invention relates to a method by which a terminal receives a downlink data channel in a wireless communication system. In detail, the method includes the steps of receiving from a network information on one or more settings defining large scale properties of a terminal-specific reference signal through a higher layer; detecting from the network one of either the first scheduling information or the second scheduling information on a downlink data channel based on a terminal-specific reference signal; and receiving the downlink data channel based on the terminal-specific reference signal on the basis of the detected scheduling information, wherein the first scheduling information includes an indicator indicating one or more of the settings, and the large scale properties of the terminal-specific reference signal are defined according to the setting indicated by the indicator during the detection of the first scheduling information, and a preset setting from among the one or more settings set during the detection of the second scheduling information. | 01-22-2015 |
20150029972 | METHOD FOR RECEIVING OR TRANSMITTING DOWNLINK SIGNAL AND APPARATUS FOR SAME - The method for receiving a downlink signal in a wireless communication system, according to one embodiment of the present invention, comprises: receiving, from a base station, a candidate seed list and downlink control information for the generation of a sequence of a downlink demodulation reference signal, wherein a seed value is selected from the candidate seed list on the basis of seed value indicating information contained in the downlink control information and the sequence of the downlink demodulation reference signal is generated by using the selected seed value. The candidate seed list may include a plurality of hybrid automatic repeat request (HARQ) process identifiers and virtual cell identifiers related to the plurality of HARQ process identifiers. | 01-29-2015 |
20150036524 | METHOD AND APPARATUS FOR MEASURING NEIGHBOR CELL IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus for measuring a neighbor cell in a wireless communication system are disclosed. The method for measuring a neighbor cell by a user equipment (UE) in a wireless communication system includes: receiving subframe information including a subframe pattern for neighbor cell measurement; performing synchronization acquisition from the neighbor cell; and performing measurement in a subframe corresponding to the subframe pattern, wherein the user equipment (UE) assumes that a signal required when the UE acquires synchronization from the neighbor cell is transmitted in a subframe corresponding to the subframe pattern. | 02-05-2015 |
20150043367 | METHOD AND APPARATUS FOR TRANSMITTING NEIGHBOR-CELL MEASUREMENT COMMAND IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus for transmitting a neighbor cell measurement command in a wireless communication system are disclosed. The method for transmitting a measurement command of a neighbor cell by a serving cell in a wireless communication system includes: confirming user equipment (UE) capability information related to cell range extension (CRE); and transmitting a measurement command including a list of cells to be measured to the UE, wherein, if the UE has CRE-related capability, the measurement command includes neighbor-cell reference signal (RS) information. | 02-12-2015 |
20150043369 | METHOD AND APPARATUS FOR PERFORMING MEASUREMENT IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus for performing measurement are disclosed. The method for performing radio link monitoring by a user equipment (UE) in a wireless communication system includes: performing cancellation of a reference signal (RS) of a neighbor cell; and determining whether to declare a radio link failure (RLF) on the basis of a reference signal (RS) of a serving cell by using information of a predetermined power ratio related to the neighbor cell. | 02-12-2015 |
20150043469 | METHOD AND DEVICE FOR TRANSMITTING CHANNEL STATE INFORMATION IN WIRELESS COMMUNICATION SYSTEM - One embodiment of the present invention discloses a method for allowing a terminal to transmit channel state information (CSI) in a wireless communication system in which a plurality of CSI reference signal (CSI-RS) resources are set for a plurality of transmission points, and the method for transmitting the CSI comprises the steps of: determining CSI reference resources; and transmitting CSI calculated from a measured signal on the basis of the CSI reference resources, wherein the CSI reference resources are included in one of at least two CSI subframe sets, the CSI subframe sets are set for each of the plurality of CSI-RS resources, and the CSI subframe sets are commonly set for transmission points which perform cooperative transmission among the plurality of transmission points. | 02-12-2015 |
20150055495 | METHOD AND APPARATUS FOR MEASURING SERVING CELL IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus for measuring a serving cell in a wireless communication system are disclosed. The method for performing measurement by a user equipment (UE) in a wireless communication system includes: receiving a list of aggressor cells and neighbor-cell reference signal (RS) information from a serving cell; and performing measurement of the serving cell, wherein information as to whether CRE (Cell Range Extension)-related capability is used during the measurement is determined according to at least one of the presence or absence of CRE-related capability of the UE and information regarding configuration or non-configuration of restricted measurement. | 02-26-2015 |
20150063177 | METHOD AND DEVICE FOR TRANSMITTING CHANNEL STATE INFORMATION IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system. A method for transmitting channel state information (CSI) by a user equipment in a wireless communication system includes receiving a CSI-reference signal (CSI-RS), determining overhead of a common reference signal (CRS) resource element based on the same antenna port number as an antenna port number associated with the CSI-RS, and transmitting the CSI calculated based on the CSI-RS and the overhead of the CRS resource element. | 03-05-2015 |
20150078272 | METHOD AND APPARATUS FOR RECEIVING DATA IN WIRELESS COMMUNICATION SYSTEM SUPPORTING COOPERATIVE TRANSMISSION - The present invention relates to a wireless communication system. A method for receiving data by a user equipment (UE) in a cooperative multi-point (CoMP) wireless communication system includes receiving information indicating a transmission base station (BS) that actually transmits data among a plurality of BSs that participate in CoMP, receiving information about zero-power channel state information-reference signal (CSI-RS) of each of the plural BSs, and assuming that data is not mapped to a resource element of zero-power CSI-RS corresponding to the transmission BS and receiving the data through a physical downlink control channel (PDSCH). | 03-19-2015 |
20150103683 | METHOD AND DEVICE FOR MEASURING INTERFERENCE IN WIRELESS COMMUNICATION SYSTEM - An embodiment of the present invention relates to a method for measuring interference by a terminal in a wireless communication system and includes: receiving neighboring cell specific reference signal (CRS) information; performing CRS interference cancellation on the basis of the CRS information; and measuring interference by applying a correction value to the result of the CRS interference cancellation, wherein the correction value is set for each sub-frame set for limited measurement. | 04-16-2015 |
20150131603 | METHOD AND APPARATUS FOR RECEIVING DATA IN WIRELESS COMMUNICATION SYSTEM SUPPORTING COOPERATIVE TRANSMISSION - The present invention relates to a wireless communication system. A method for receiving data by a user equipment (UE) in a cooperative multi-point (CoMP) wireless communication system includes receiving downlink control information (DCI) that does not contain information indicating a transmission base station (BS) that actually transmits data among a plurality of BSs that participate in CoMP, receiving information about zero-power channel state information-reference signal (CSI-RS) of each of the plural BSs, and assuming that data is not mapped to a resource element of zero-power CSI-RS with a lowest index and receiving the data through a physical downlink control channel (PDSCH). | 05-14-2015 |
20150146644 | METHOD AND DEVICE FOR RECEIVING DOWNLINK SIGNAL IN WIRELESS COMMUNICATION SYSTEM - A method for a terminal for receiving a downlink signal according to an embodiment of the present invention comprises a step of receiving a channel state information-reference signal (CSI-RS) on the basis of CSI-RS configuration information elements containing quasi co-location cell-specific reference signal (QCL CRS), wherein the terminal receives the CSI-RS by means of a QCL assumption on the basis of the QCL CRS information, and if the information contained in the QCL CRS information and the information known to the terminal corresponding to the information contained in the QCL CRS are not in agreement, then the information known to the terminal is applied preferentially. | 05-28-2015 |
20150180625 | METHOD FOR RECEIVING OR TRANSMITTING DOWNLINK SIGNAL IN WIRELESS COMMUNICATION SYSTEM AND DEVICE THEREFOR - One embodiment of the present invention discloses a method for receiving a downlink signal in a wireless communication system that supports coordinated multiple-point transmission and reception (CoMP), and the method comprises the steps of: receiving downlink control information that contains a plurality of resource allocation parts from a base station; and acquiring information on whether it can be assumed that an antenna port(s) of a particular reference signal and an antenna port (s) of a demodulation reference signal associated with each of the plurality of resource allocation parts are quasi co-located (QCL). | 06-25-2015 |
20150195068 | METHOD AND DEVICE FOR RECEIVING DOWNLINK SIGNAL IN WIRELESS COMMUNICATION SYSTEM - A method for a terminal for receiving a downlink signal according to an embodiment of the present invention comprises the steps of: receiving, from a serving cell, a cell-specific reference signal (CRS) information for a neighboring cell; and receiving, from a serving cell and/or a neighboring cell, a physical downlink shared channel (PDSCH), wherein the CRS of the serving cell is invalidated if the terminal receives a PDSCH from the neighboring cell. | 07-09-2015 |
20150207601 | METHOD AND APPARATUS FOR RECEIVING DOWNLINK SIGNAL IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a method for a first transmission point to transmit a downlink signal to a terminal in a wireless communication system, including a step of mapping a physical downlink shared channel (PDSCH) to resource elements (REs) in a first area, with the exception of an RE corresponding to a cell-specific reference signal (CRS) of a second transmission point from among the REs available for the PDSCH, and further including a step of, when the terminal is a second type of terminal, mapping the PDSCH to REs in a second area corresponding to the CRS of the second transmission point. | 07-23-2015 |
20150208290 | METHOD AND APPARATUS FOR PERFORMING HANDOVER IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a method for a terminal to perform a handover in a wireless communication system, including the steps of: receiving a handover instruction from a serving cell; and performing a random access procedure for a target cell according to the handover instruction, wherein, when interference adjustment is performed on the serving cell and the target cell, system information for the target cell is obtained from the serving cell. | 07-23-2015 |
20150208392 | METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING DOWNLINK SIGNAL CONSIDERING ANTENNA PORT RELATIONSHIP IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system, and more specifically, to a method and an apparatus for transmitting or receiving a downlink signal considering an antenna port relationship. The method for enabling a terminal to receive a physical downlink sharing channel (PDSCH) signal in the wireless communication system according to one embodiment of the present invention can determine a PDSCH start symbol index according to the predetermined priority and receive the PDSCH signal therethrough. The PDSCH start symbol index can be determined when a PDSCH start symbol value included in a PDSCH resource element mapping and Quasi co-location Indicator (PQI) parameter set is determined by an upper layer. The PDSCH start symbol index can be determined according to the PDSCH start symbol value for a cell receiving the PDSCH when the PDSCH start symbol value included in the PQI parameter set is not determined by the upper layer. | 07-23-2015 |
20150215093 | METHOD AND APPARATUS FOR TRANSCEIVING CHANNEL STATUS INFORMATION IN WIRELESS COMMUNICATION SYSTEM SUPPORTING COOPERATIVE TRANSMISSION - 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. | 07-30-2015 |
20150223182 | METHOD AND APPARATUS FOR TRANSCEIVING CHANNEL TRANSMIT POWER INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - A method for receiving operating class information by a station (STA) from an access point (AP). A frame including a country element is received by the STA. The country element includes one or more operating/subband sequences having an operating triplet. The operating triplet includes an operating extension identifier field, an operating class field and a coverage class field. If a predetermined condition is met, the STA identifies that information on the country element is for two frequency segments having an equal width. The predetermined condition is that the received frame comprises two consecutive operating/subband sequences having first and second operating triplets. The first operating triplet indicates a specific behavior mode and the second operating triplet indicates a behavior mode other than the specific behavior mode. If the predetermined condition is not met, the STA identifies that the information on the country element is for one frequency segment. | 08-06-2015 |
20150236828 | DOWNLINK SIGNAL TRANSCEIVING METHOD AND DEVICE, IN WIRELESS COMMUNICATION SYSTEM, TAKING INTO ACCOUNT ANTENNA PORT RELATIONSHIP - The present invention relates to a wireless communication system, and more particularly, to a downlink signal transmission and reception method and device taking into account antenna port relationship. A method for the reception of a physical downlink shared channel (PDSCH) signal by a terminal in a wireless communication system, according to one embodiment of the present invention, can comprise: a step for determining a start symbol index for the PDSCH in a downlink subframe; and a step for receiving the PDSCH signal on the basis of the start symbol index. The PDSCH start symbol index (k) when the downlink subframe belongs to a specific subframe set is determined according to k=min(KThreshold, K), KThreshold being a prescribed threshold, K being the PDSCH start symbol index when the downlink subframe does not belong to the specific subframe set, and min(KThreshold, K) being the minimum value among KThreshold and K. | 08-20-2015 |
20150249973 | METHOD FOR RECEIVING OR TRANSMITTING DOWNLINK CONTROL SIGNAL IN WIRELESS COMMUNICATION SYSTEM AND DEVICE FOR SAME - A method by which a user equipment receives a downlink control signal in a wireless communication system supporting carrier aggregation (CA) and coordinated multiple-point transmission and reception (CoMP), according to one embodiment of the present invention, comprises the steps of: receiving candidate sets of control information for the CA and the CoMP from a downlink serving base stations; and receiving an indicator for indicating one of the candidate sets from the downlink serving base station, wherein the candidate sets of the control information comprise a usable set of control information with respect to each carrier wave, and the control information can include information on carrier waves scheduled by the downlink serving base station, information on channel state information-reference signal antenna port(s) that is (are) quasi co-located (QCL) assumable with demodulation-reference signal antenna port(s) of the downlink serving base station, information on PDCH resource element (RE) mapping and/or information indicating whether or not QCL assumption between the channel state information-reference signal antenna port(s) and antenna port(s) indicated by the information on PDSCH RE mapping is possible. | 09-03-2015 |
20150256306 | METHOD FOR SUPPORTING COMP IN WIRELESS COMMUNICATION SYSTEM AND DEVICE THEREFOR - One embodiment of the present invention discloses a method by which a CoMP scheduling device determines a CoMP set in a wireless communication system that supports coordinated multiple-point transmission and reception (CoMP), the method comprising the steps of receiving, from at least one base station, information on a terminal served by the base station; determining a CoMP set on the basis of the received information on the terminal (s); and transmitting identification information of the terminal(s) included in the CoMP set to a base station(s) included in the CoMP set, wherein the information on the terminal can include the identification information of the terminal, capability, quality of service (QoS), a channel state value between the terminal and each base station around the terminal, and/or ePDCCH set configuration information of the terminal. | 09-10-2015 |
20150264669 | METHOD AND DEVICE FOR RECEIVING OR TRANSMITTING DOWNLINK DATA IN WIRELESS COMMUNICATION SYSTEM - A method of receiving downlink data in a wireless communication system according to an embodiment of the present invention includes: receiving a first parameter, for determining the effectiveness of a channel state information-reference signal (CSI-RS) from a special cell, from a first cell; and obtaining information on a sub frame having non-effective CSI-RS by using the number of sub frames to which the paging message of a second cell is transmitted for a reference time, and the first parameter may be different from a second parameter that is transmitted by the second cell and indicates the number of sub frames to which the paging message of the second cell is transmitted for the reference time. | 09-17-2015 |
20150288432 | METHOD AND DEVICE FOR TRANSMITTING AND RECEIVING CHANNEL STATE INFORMATION IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system. A method by which a user equipment reports a channel state information (CSI) in a wireless communication system, according to one embodiment of the present invention, can comprise the steps of: setting up a first CSI process in which a subframe pattern for a first subframe set, which uses an almost blank subframe (ABS), and a second subframe set, which does not use the ABS, is set; setting up a second CSI process in which the subframe pattern is not set; setting a second rank indicator (RI) of the second CSI process to be the same as a first RI corresponding to the second subframe set when the second CSI process is established so as to have the same RI as the first CSI process; and transmitting the CSI on the basis of the first CSI process and/or the second CSI process. | 10-08-2015 |
20150296525 | METHOD FOR IDENTIFYING INTERFERENCE OF USER EQUIPMENT IN WIRELESS COMMUNICATION SYSTEM AND DEVICE THEREFOR - One embodiment of the present invention discloses a method for identifying the interference of a user equipment(s) on a pico base station located within the coverage of a macro base station in a wireless communication system, and the method comprises the steps: enabling the macro base station to receive an uplink (UL) interference control request message from the pico base station; signaling a random access preamble for the UL interference control to each of a plurality of interference candidate user equipments served by the macro base station; receiving, from the pico base station, received signal strength information of the random access preamble transmitted by the plurality of interference candidate user equipments; and determining the interference of user equipment on the pico base station on the basis of the received signal strength information, wherein transmission power of the random access preamble can be set in a random access preamble-specific manner. | 10-15-2015 |