Patent application number | Description | Published |
20110053604 | SCHEDULING METHOD BASED ON HIERARCHICAL CELL STRUCTURE AND FEMTO BASE STATION FOR THE SAME - A method for scheduling User Equipments (UEs) in a femto Base Station (BS) in a mobile communication system having a hierarchical cell structure is disclosed. The scheduling method includes transmitting a resource allocation request signal to a macro BS using a predetermined identifier (ID) having a UE ID format, receiving radio resource allocation information about resources allocated in relation to the predetermined ID from the macro BS, allocating the allocated radio resources to one or more UEs, receiving a signal from the one or more UEs using the allocated radio resources, and transmitting the signal received from the one or more UEs to a network via an Internet connection. | 03-03-2011 |
20120057516 | METHOD FOR TRANSMITTING A SOUNDING REFERENCE SIGNAL IN AN UPLINK COMP COMMUNICATION SYSTEM, AND APPARATUS FOR SAME - The present invention relates to a method for transmitting a sounding reference signal from a terminal in an uplink coordinative multi-point (CoMP) communication system. Specifically, the method comprises the steps of: receiving parameters for transmitting a sounding reference signal from a serving base station included in a CoMP set; assigning a resource for the sounding reference signal on the basis of the parameters; and transmitting the sounding reference signal to the serving base station included in the CoMP set and to at least one neighboring base station according to the assigned resource, wherein basis sequences of the parameters for the sounding reference signal are different for base stations included in the CoMP set. | 03-08-2012 |
20120214536 | COOPERATIVE WIRELESS POWER SIGNAL TRANSMISSION METHOD AND DEVICE - Disclosed are a method and device for cooperatively sending and receiving power wirelessly. Wireless power charging coverage at the level of data signal transmission can be ensured by establishing one or more modes for transmitting, to a specific terminal, a power transmission signal from any of a plurality of nodes which is (are) not engaged in data transmission, and by matching the phase synchronization of the power transmission signal between the one or more nodes and then transmitting, to the specific terminal, a power transmission signal of which the phase synchronization has been matched by means of the one or more modes. | 08-23-2012 |
20120225662 | APPARATUS AND METHOD FOR ALLOCATING FREQUENCY RESOURCE TO MICRO UE IN A MOBILE COMMUNICATION SYSTEM - A method and apparatus for allocating a frequency resource to each micro User Equipment (UE) in a hierarchical cellular mobile communication system are disclosed. The method includes acquiring information about traffic of each macro UE or a macro BS in a frequency resource allocated to the macro UE or the macro BS, first Signal-to-Noise Ratio (SNR) information about an SNR of a signal from the macro UE or the macro BS, measured at each micro UE and second SNR information about an SNR of a signal from the micro UE, measured at each micro BS, calculating throughput of the micro UE using the traffic information, the first SNR information and the second SNR information, determining a frequency resource to be allocated to the micro UE using information about the calculated throughput and allocating the determined frequency resource to the micro UE. | 09-06-2012 |
20130034070 | METHOD AND APPARATUS FOR CHANNEL ESTIMATION FOR RADIO LINK BETWEEN A BASE STATION AND A RELAY STATION - A method and apparatus for channel estimation for radio link between a base station and a relay station in a radio communication system are disclosed. A method for receiving a downlink signal at a relay node in a wireless communication system, the method comprising receiving downlink control information by demodulating a R-PDCCH of a first RB pair based on a downlink channel estimated by a DMRS in the first resource block (RB) pair; and receiving downlink data by demodulating a PDSCH of the one or more RB pairs contiguous to the first RB pair based on a downlink channel estimated by a DMRS in the one or more RB pairs, wherein, if the PDSCH is assigned to the first RB pair, the downlink channel is estimated on the assumption that the same precoder is applied to one RB bundle including the first RB pair and the one or more RB pairs. | 02-07-2013 |
Patent application number | Description | Published |
20110274075 | APPARATUS FOR TRANSMITTING UPLINK SIGNAL IN MIMO WIRELESS COMMUNICATION SYSTEM AND METHOD THEREOF - A method of multiplexing control information and data information in a wireless communication system is disclosed. The present invention includes mapping codewords corresponding to the data information to a preset number of layers, mapping the control information to the preset number of the layers, multiplexing the layer-mapped data information and the layer-mapped control information into a frequency region within an SC-FDMA symbol, and transmitting the SC-FDMA symbol to a base station via multiple antennas. | 11-10-2011 |
20110281585 | METHOD FOR PERFORMING A HANDOFF BY A COMP SET - Disclosed is a method for performing a handoff in a CoMP cluster. A user equipment measures a signal to interference-plus-noise ratio (SINR) value of each of the CoMP sets constituted by the combination of a plurality of base stations in one CoMP cluster. Then, the user equipment transmits the SINR value of each of the CoMP sets to a serving base station through a pilot strength measurement message (PSMM). Subsequently, the user equipment receives, from the serving base station, a message which instructs a handoff determined through the transmitted signal to interference-plus-noise ratio (SINR) values. | 11-17-2011 |
20110292865 | METHOD FOR ALLOCATING BACKHAUL LINK RESOURCES IN RELAY COMMUNICATION SYSTEM, AND METHOD & APPARATUS FOR TRANSMITTING & RECEIVING DATA USING SAME - The present invention relates to a method and an apparatus for transmitting and receiving data in a relay communication system. The method and the apparatus allocate resources by dividing backhaul link resources into plural partitions, and then transmit and receive data. The data transmission method of the invention comprises the steps of: allocating a certain number of initial OFDM symbol transmission periods in a sub-frame of a downlink channel to a control channel that transfers the control information of the terminal, wherein data is transmitted from a base station to a relay or terminal through the downlink channel; dividing the resource blocks excluded from the control channel of the sub-frame into at least two partitions based on frequency domain; determining whether or not each divided partition is allocated to the relay or terminal as resources; and allocating data to the determined partition in order to transmit the partition to the relay or terminal through the downlink channel, wherein the partition determined for the allocation of resources to the relay is allocated to the relay through time division multiplexing (TDM) or frequency division multiplexing of both control and data channels of the relay. | 12-01-2011 |
20110310747 | METHOD FOR AVOIDING INTERFERENCE - The present invention provides a method for avoiding interference resulting from data transmission between an adjacent second base station and a second relay station placed within the coverage of the adjacent second base station. The method for avoiding interference comprises: receiving the radio resource scheduling information from the adjacent second base station; checking the radio resources used in the data transmission between the adjacent second base station and the second relay station based on the received radio resource scheduling information; and scheduling at least one radio resource among uplink radio resources and downlink radio resources for at least one first terminal and at least one first relay station which are connected to a first base station in order to avoid interference with the checked radio resource if the radio resource used in the data transmission from the second base station to the second relay station is checked as the uplink resource or if the radio resource used in the data transmission from the second relay station to the second base station is checked as the downlink resource. | 12-22-2011 |
20110317616 | METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING DATA IN A RELAY COMMUNICATION SYSTEM - The present invention relates to a method and apparatus for data transmission, which properly use the time slot between a downlink transmission period and an uplink transmission period for a backhaul communication between a base station and a relay node in a time division multiplexing communication system. The method for data transmission in a relay communication system according to one embodiment of the present invention comprises the steps of: setting a data frame including a downlink subframe for transmitting a downlink signal, an uplink subframe for transmitting an uplink signal, and a special subframe existing between the downlink subframe and the uplink subframe; and transmitting/receiving data to/from the relay node or a terminal via the data frame set in the previous step. The special subframe includes a first transmission period and a second transmission period. The downlink signal is transmitted to the relay node or the terminal via the first transmission period, and the downlink signal is transmitted to the relay node via the second transmission period, and the terminal does not perform a reference signal decoding process during the second transmission period. Therefore, interference which may occur in the backhaul communication between the base station and the relay node can be minimized, the transmission volume of the backhaul communication between the base station and the relay node can be dynamically adjusted, and the backward compatibility between the present invention and conventional wireless communication systems and conventional terminals can be maintained at a maximum level. | 12-29-2011 |
20120020279 | MULTIPLE DATA STREAM TRANSMISSION METHOD AND APPARATUS IN RELAY SYSTEM - The present invention relates to a data transmission/receiving method and apparatus for overcoming interference between multiple data streams, by relaying only part of multiple data streams that are received from a source node during collaborative data transmission employing relay nodes. The multiple data stream transmission method of the present invention comprises: receiving a plurality of data streams from a source node; decoding the plurality of data streams received; selecting a portion of the successful decoded data streams; encoding the selected portion of the data streams; and sending the encoded data stream portion to a destination node. | 01-26-2012 |
20120033608 | METHOD AND APPARATUS FOR TRANSMITTING A REFERENCE SIGNAL IN A RELAY COMMUNICATION SYSTEM - The present invention relates to a method and to an apparatus for transmitting reference signals in a relay communication system. The method for transmitting reference signals through a type 2 relay node in a relay communication system comprises: a step in which a base station allocates a plurality of antenna ports in a mutually exclusive manner so that the antenna port of the base station and the antenna port of the peripheral relay node do not overlap each other; a step in which the base station and the relay node transmit reference signals to user equipment through the respective antenna ports mutually exclusively allocated; and a step in which the base station receives a channel state information from the user equipment to obtain channel state information between the base station and the user equipment and channel state information between the relay node and the user equipment. | 02-09-2012 |
20120057559 | METHOD FOR TRANSMITTING A DOWNLINK SIGNAL IN A WIRELESS COMMUNICATION SYSTEM AND APPARATUS FOR SAME - The present invention discloses a method in which a base station transmits a downlink signal in a wireless communication system. In detail, the method comprises the following steps: allocating a transmitting resource to data symbols for transmitting downlink signals, in the direction of increasing a frequency index; and transmitting the downlink signal to a terminal, using the allocated resource. The frequency band of preset orthogonal frequency division multiplexing (OFDM) symbols, from among the transmitting resource, contains a control domain and a segment band. The step of allocating the transmitting resource comprises the step of puncturing the data symbol using a control channel, to which the control domain contained in the preset OFDM symbols is allocated. | 03-08-2012 |
20120087400 | METHOD FOR RECEIVING DATA IN MULTI INPUT MULTI OUTPUT - Disclosed is a method for receiving data in a Multi Input Multi Output (MIMO) system, the method comprising: decoding data transmitted from a transmitter by using one beam-forming vector included in a codebook that beam-forming vectors are formed in a hierarchical structure according to at least one of change directions of radio channels, the number of channel change directions, and a change rate; determining whether to update the beam-forming vector based on the radio channel changes; selecting other beam-forming vector included in the codebook having a hierarchical structure when it is determined that update for the beam-forming vector is required; feed-backing information about an index indicating where the selected beam-forming vector is located in the hierarchical structure of the codebook to the transmitter; and decoding data received from the transmitter by using the selected beam-forming vector. | 04-12-2012 |
20120093250 | METHOD AND APPARATUS FOR DATA TRANSMISSION BASED ON DISTRIBUTED DISCRETE POWER CONTROL IN COOPERATIVE MULTI-USER MULTI-INPUT MULTI-OUTPUT SYSTEM - Disclosed are a method and apparatus capable of enhancing a closed loop multi-input multi-output (MIMO) capacity through distributed discrete power control in the case of cooperatively transmitting information to multiple users through a downlink. | 04-19-2012 |
20120108255 | APPARATUS FOR TRANSMITTING A SIGNAL USING SCHEDULING INFORMATION IN A MOBILE COMMUNICATION SYSTEM AND METHOD FOR SAME - Disclosed are a method for transmitting scheduling information in a mobile communication system and a femtocell base station using the method. A femtocell base station transmits scheduling information using a layered scheduling system in which the femtocell base station receives an allocated resource from a macrocell base station, and allocates the resource to femtocell users within a resource region thereof. | 05-03-2012 |
20120122513 | METHOD FOR COOPERATIVE CONTROL OF POWER AMONG BASE STATIONS AND BASE STATION DEVICE USING SAME - A method for cooperative control of power among base stations and a base station device which performs the same are discussed. A first receiving unit is configured such that a specific base station in a cooperative unit receives, from a specific terminal located on a cell edge of the specific base station, token value information which indicates an average transmission rate of the specific terminal and the up-to-date level of satisfaction of the minimum average transmission rate of the specific terminal. A second receiving unit receives, from one or more other base stations in the cooperative unit, information containing an average transmission rate of terminals located on edges of each of the base stations, token values of terminals located on cell edges of each of the base stations, and the current power levels of each of one or more base stations. | 05-17-2012 |
20120134316 | METHOD FOR ALLOCATING REFERENCE SIGNALS OF A BACKHAUL LINK IN A RELAY COMMUNICATION SYSTEM, AND METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING DATA USING SAME - The present invention relates to a method and to an apparatus for transmitting/receiving data in a relay communication system. The method comprises the steps of: setting, as a guard band, the first predetermined number of symbol transmission slots of a data transmission period in a subframe resource element of a downlink channel constituted by a control signal transmission period to which a control signal is allocated and the data transmission period to which downlink data is allocated; allocating reference signals to symbols of the data transmission period; puncturing the symbols corresponding to the guard band from among the symbols to which said reference signals are allocated; and transmitting signals to which said reference signals are allocated. | 05-31-2012 |
20130016764 | Apparatus and Method for Generating Codebook in a Wireless Communication System - An apparatus and method for generating a codebook in a wireless communication system are disclosed. The codebook generation apparatus includes a processor for generating a covariance matrix of a channel between the transmitting end and a receiving end, using a unitary matrix including a first vector corresponding to at least one quantized dominant singular singular vector of the channel and a second vector corresponding to at least one basis vector of a null space of the first vector, and transforming a predefined first codebook by applying the covariance matrix of the channel to the first codebook. | 01-17-2013 |
20130142132 | Method and Apparatus for Receiving Available Channel Information in a Wireless LAN System - The present invention relates to a method and apparatus for receiving available channel information in a wireless LAN system. According to one aspect of the present invention, in a method in which a first station (STA) receives available channel information in a wireless LAN system, wherein the first station operates as an unlicensed device that is allowed to operate in an available channel not used by a licensed device in a white space band, the first station receives, from a second station, a frame including an operating class field, a channel number field and a maximum transmission power field, and operates in the channel indicated by the operating class field and the channel number field, wherein said operating class field and said channel number field indicate the available channel which can be used by the unlicensed device, and said maximum transmission power field indicates the maximum transmission power permitted in the available channel. | 06-06-2013 |
20130155896 | Method and Terminal for Searching for an Access Point - Specifically, according to one embodiment of the present invention, a method for searching for an access point is provided. The method for searching may comprises the steps of: a terminal measuring the position thereof; checking an access point located near the measured position of the terminal; determining whether or not the distance between the terminal and the access point is greater than the radius range searchable by the terminal; and searching for the access point when the distance between the terminal and the access point is less than the radius range. | 06-20-2013 |
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 |
20130201928 | Method and Apparatus for Receiving Available Channel Information in a Wireless Lan System - The present invention relates to a method and apparatus for receiving a white space map in a wireless LAN system. According to one aspect of the present invention, in a method in which a first station (STA) receives a white space map in a wireless LAN system, wherein the first station operates as an unlicensed device that is allowed to operate in an available channel not used by a licensed device in a white space band, the first station receives, from a second station, a frame including the white space map which includes a black list and a first field for indicating that the white space map contains the black list, and operates in at least one channel from the rest of the channels in TVWS, excluding the channel contained in the black list, wherein the black list is a list of channels which cannot be used by the unlicensed device. | 08-08-2013 |
20140286184 | METHOD AND APPARATUS FOR TRANSMITTING REFERENCE SIGNAL FOR REDUCING INTERCELL INTERFERENCE IN MULTIPLE INPUT MULTIPLE OUTPUT COMMUNICATION SYSTEM - According to one embodiment, a method for receiving a Channel State Information-Reference Signal (CSI-RS) for measuring a channel includes: receiving CSI-RSs on resource elements (REs) in a subframe configured for the CSI-RSs from a base station, wherein if each CSI-RS of the received CSI-RSs is transmitted from each of four or more transmit antenna ports of the base station, at least two REs on which each CSI-RS is received are associated with each of the four or more transmit antenna ports; and transmitting channel state information based on the received CSI-RSs. | 09-25-2014 |
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 |
Patent application number | Description | Published |
20110312184 | METHOD FOR FORMING PATTERN OF SEMICONDUCTOR DEVICE - A method for forming a pattern of a semiconductor device is disclosed. The method for forming the semiconductor device pattern can simplify a fabrication process using Spacer Patterning Technology (SPT), and at the same time can form a microscopic contact hole. The method for forming the semiconductor device pattern includes forming a hard mask layer and a photoresist film pattern over an underlying layer to be etched; forming one or more first spacers over sidewalls of the photoresist film pattern; removing the photoresist film pattern; forming a sacrificial film pattern by burying a sacrificial film in a region between the first spacers; after removing the first spacer, and forming one or more second spacers over sidewalls of the sacrificial film pattern; after removing the sacrificial film pattern, etching the hard mask layer using the second spacer as an etch mask, and forming a hard mask pattern; and forming a contact hole pattern by etching the underlying layer using the hard mask layer pattern as a mask. | 12-22-2011 |
20130153990 | SEMICONDUCTOR DEVICE AND METHOD FOR MANUFACTURING THE SAME - In a semiconductor device and a method for manufacturing the same, a pillar pattern is formed in an alternating pattern and a one side contact (OSC) is formed without using a tilted ion implantation process or a mask, resulting in formation of a vertical gate. The semiconductor device includes an alternating or zigzag-type pillar pattern formed over a semiconductor substrate, a first hole formed between pillars of the pillar pattern, a passivation layer formed over a sidewall of the first hole, a second hole formed by partially etching a lower part of the first hole, a bit line formed in the second hole, and a contact formed at a lower part of the pillar pattern. | 06-20-2013 |
20140065524 | PHOTOMASK AND METHOD FOR FORMING PATTERN OF SEMICONDUCTOR DEVICE USING THE SAME - A semiconductor device includes a cell mask pattern disposed in a cell region of a mask substrate and a vernier mask pattern disposed in a vernier region of the mask substrate. The vernier mask pattern includes a variable mask pattern portion to transfer a different shape of pattern depending on the magnitude of exposure energy. | 03-06-2014 |
20150311211 | SEMICONDUCTOR DEVICE AND METHOD FOR MANUFACTURING THE SAME - In a semiconductor device and a method for manufacturing the same, a pillar pattern is formed in an alternating pattern and a one side contact (OSC) is formed without using a tilted ion implantation process or a mask, resulting in formation of a vertical gate. The semiconductor device includes an alternating or zigzag-type pillar pattern formed over a semiconductor substrate, a first hole formed between pillars of the pillar pattern, a passivation layer formed over a sidewall of the first hole, a second hole formed by partially etching a lower part of the first hole, a bit line formed in the second hole, and a contact formed at a lower part of the pillar pattern. | 10-29-2015 |
Patent application number | Description | Published |
20130222261 | TOUCH-ZONE KOREAN-LANGUAGE INPUT PANEL - The current application is directed to an intuitive, easily manipulated, and fully functional soft-input panel (“SIP”) and hardware input panels (“HIPs”), or physical keyboards, for mobile telephones, tablet computers, and other electronic devices that provides for input of Korean-language text. One implementation of the touch-zone Korean-language SIP to which the current application is directed includes 4 regions, or zones, each containing three input keys, for input of Hangul characters and control directives, including backspace, space, and enter commands. A fifth region includes two consonant-composition features, and sixth and seventh regions each include an alternate SIP toggle. The input features of this particular implementation allow for input of all Hangul Korean-language characters as well as cursor control, text-entry control, and alternate-SIP toggles. Neither this section nor the sections which follow are intended to either limit the scope of the claims which follow or define the scope of those claims. | 08-29-2013 |
20130222262 | KOREAN-LANGUAGE INPUT PANEL - The current application is directed to intuitive, easily manipulated, and fully functional soft-input panels (“SIPs”) and hardware input panels (“HIPs”), or physical keyboards, for mobile telephones, tablet computers, and other electronic devices that provide for input of Korean-language text. One implementation of the Korean-language SIP to which the current application is directed includes 16 different displayed input features arranged in four columns and four rows. The 16 input features of this particular implementation allow for input of all Hangul Korean-language characters as well as cursor control, text-entry control, and alternate-SIP toggles. Neither this section nor the sections which follow are intended to either limit the scope of the claims which follow or define the scope of those claims. | 08-29-2013 |