Patent application number | Description | Published |
20110086659 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM - Disclosed are apparatuses and methods for transmitting and receiving control information, such as downlink assignment and uplink grant, to each CC through a DCI format of a PDCCH in a wireless communication system using a plurality of CCs. Exemplary embodiments include configuration and transmission of a CC indicator for the DCI format, in order to identify a CC to which the control information transferred by each DCI format corresponds from among the CCs. | 04-14-2011 |
20110105162 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM - A system and a method for transmitting control information by a system in a heterogeneous wireless communication network using Component Carriers (CCs), the heterogeneous wireless communication network including a first wireless communication network and a second wireless communication network, which at least partially overlap and are heterogeneous, the system controlling the second wireless communication network can more stably and efficiently transmit control information in a heterogeneous network environment. The method includes: calculating an environmental parameter having an influence on transmission of control information; determining a transmission scheme of the control information according to the calculated environmental parameter; and transmitting the control information to a User Equipment (UE) connected to the second wireless communication network according to the determined transmission scheme. | 05-05-2011 |
20110176634 | METHOD AND APPARATUS FOR ALLOCATING CHANNEL STATE INFORMATION-REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM - Disclosed are an apparatus for Channel State Information-Reference Signal (CSI-RS) allocation and a method for CSI-RS transmission using the same in a wireless communication system. A CSI-RS for each antenna port is allocated to REs or subcarriers on a basis of a symbol or symbol axis in a subframe or Resource Block (RB), and is allocated in such a manner that a distance between neighboring CSI-RS allocation REs or subcarriers may be 3 REs or subcarriers. Accordingly, in the range of following CSI-RS transmission overhead, CSI-RSs are allocated to a time-frequency resource domain in such a manner so as to have perfect orthogonality or quasi-orthogonality according to cells or cell groups. Then, the CSI-RSs, which have been allocated to the time-frequency resource domain, are transmitted. | 07-21-2011 |
20120044796 | METHOD FOR GENERATING SIGNAL PATTERN USING MODULUS OR SEQUENCE, AND DEVICE THEREOF - Disclosed are a method and an apparatus for generating signal patterns used for a transmission/reception process between a terminal and a base station by using a modular sonar sequence. | 02-23-2012 |
20120093253 | POWER ALLOCATION METHOD FOR WIRELESS COMMUNICATION SYSTEM, APPARATUS FOR SAME, AND TRANSCEIVER DEVICE USING THIS FORM OF SIGNAL TRANSMISSION - Disclosed is a wireless communication system and a power allocation in the wireless communication system. | 04-19-2012 |
20120108254 | REFERENCE SIGNAL ALLOCATION METHOD FOR WIRELESS COMMUNICATION SYSTEM, APPARATUS FOR SAME, AND TRANSCEIVER DEVICE USING THE APPARATUS - Disclosed is a reference signal required for an estimation of a frequency domain channel by a receiver side in order to transmit and receive data between a UE and a BS, and an apparatus and a method for allocating a reference signal for obtaining channel state information. In a wireless communication system including a UE and a BS using multiple antennas, cells are distinguished by applying a CDM, multiple antenna layers are distinguished by using a frequency offset or a time offset, and the reference signal for obtaining the channel state information is allocated to a frame or a subframe. | 05-03-2012 |
20120147844 | METHOD AND SYSTEM FOR ALLOCATING RESOURCES FOR COMPONENT CARRIERS IN A WIRELESS COMMUNICATION SYSTEM - The present disclosure relates to a wireless communication system which has a plurality of component carriers and a method and system for allocating resources for each component carrier. The present disclosure relates to a scheme in which cell coverage is set for each component carrier in consideration of the wireless environment of the component carriers, and a scheme in which a random access process of a user equipment is controlled in accordance with said set cell coverage and resources are allocated in accordance with a priority configuration. | 06-14-2012 |
20120155355 | METHOD AND SYSTEM FOR TRANSMITTING/RECEIVING DATA IN A WIRELESS COMMUNICATION SYSTEM - The present specification relates to a wireless communication system, and more particularly, discloses a method and system for discontinuous reception for data transmission/reception in a wireless communication system. The present specification discloses a scheme in which a terminal checks a parameter for controlling the discontinuous reception (DRX) of a second component carrier, said parameter being different from the parameter for controlling the discontinuous reception (DRX) of a first component carrier used by a base station, and receives data through the discontinuous reception of the first component carrier and of the second component carrier. | 06-21-2012 |
20120195283 | METHOD FOR TRANSMITTING INFORMATION OVER A COMPONENT CARRIER IN A WIRELESS COMMUNICATION SYSTEM, AND WIRELESS COMMUNICATION SYSTEM - The present specification relates to a method for transmitting information over a component carrier and to a wireless communication system for the method. The present invention relates to a method for transmitting information that indicates an allocated component carrier, and to a method for transmitting information on the number of usable CCs of a terminal via upper layer signaling, and transmitting information on CC allocation via physical layer signaling. | 08-02-2012 |
20120195286 | APPARATUS AND METHOD FOR TRANSCEIVING SIGNALS IN A WIRELESS COMMUNICATION SYSTEM - The present specification relates to an apparatus and method for transceiving signals between a terminal and a base station in a wireless communication system. The present specification relates to a signal-transceiving method in which location reference signals discriminated by frequency units for each base station, such that base stations which transmit location reference signals with the same location reference signal pattern can be further discriminated. | 08-02-2012 |
20120201192 | METHOD AND APPARATUS FOR RELAYING UPLINK SIGNALS - The present invention relates to a method and apparatus for relaying uplink signals, and provides a method and apparatus for relaying uplink signals which involve integrating a plurality of information blocks for signals received from a plurality of terminals to generate an integrated information block, encoding the thus-generated integrated information block, and transmitting the encoded block to a base station. | 08-09-2012 |
20120201202 | METHOD FOR UPLINK MULTI-RECEPTION, AND BASE STATION DEVICE USING SAME - The present specification relates to a wireless communication system, and particularly, to a method for uplink multi-reception in a wireless communication system and to a base station device using same. The present specification relates to an uplink multi-reception technique for enabling two or more base stations including a serving main base station and one or more neighbor base stations, in order to receive data from a user equipment. The base station device checks whether or not the signal received from the user equipment is decoded, receives a transmission ready signal (RPT) from the neighbor base station or exchanges ACK/NACK signals, determines one or more neighbor base stations as selected neighbor base stations in accordance with a predetermined regulation, transmits a transmission request signal to the selected neighbor base stations, and receives data. | 08-09-2012 |
20120213190 | APPARATUS AND METHOD FOR GENERATING AND TRANSCEIVING REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM USING PLURAL COMPONENT CARRIERS - The present invention relates to an apparatus and a method for composing and transmitting/receiving a reference signal in a wireless communication system that uses a plurality of component carriers (CC). In a wireless communication system using a plurality of component carriers, the present invention can reduce an increase in cubic metric (CM) and peak to average power ratio (PAPR) which occur in the course of composing and transmitting/receiving the same reference signal for each component carrier, by composing and transceiving a distinctive reference signal for each component carrier. | 08-23-2012 |
20120213203 | METHOD FOR SENDING AND RECEIVING SYSTEM INFORMATION IN A WIRELESS COMMUNICATION SYSTEM, AND A SYSTEM INFORMATION SENDING DEVICE AND RECEIVING DEVICE EMPLOYING THE SAME - The present invention relates to a method for sending and receiving system information about multiple component carriers in a wireless communication system, and to a system information sending and receiving device employing the same. The present invention comprises a configuration wherein one component carrier is used to transmit system information about another component carrier to a terminal. One embodiment of the present invention solves the problems which occur when using a plurality of component carriers such as additional battery consumption and time delays before receiving information, and hence it has the advantages that battery consumption and information receipt delays are reduced. | 08-23-2012 |
20120258721 | METHOD AND APPARATUS FOR OPERATING COMPONENT CARRIERS IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a method and apparatus for operating component carriers in a wireless communication system. The method for operating component carriers according to one embodiment of the present invention comprises the following steps: determining whether or not to reconfigure component carriers of user equipment, and transmitting, to the user equipment, a reconfiguration message containing information on uplink component carriers to be allocated to a cell; allocating a resource in the cell as an uplink component carrier resource; and receiving, from the user equipment, a message containing the result of the allocation of the uplink component carriers via the allocated uplink component carriers. | 10-11-2012 |
20120269152 | METHOD FOR CONFIGURING A RESOURCE, METHOD FOR TRANSCEIVING DATA IN THE CONFIGURED RESOURCE, AND APPARATUS FOR SAME IN A WIRELESS COMMUNICATION SYSTEM - The present description relates to a wireless communication system, a method for configuring a resource, a method for transceiving data in the configured resource, and an apparatus for the same. The method described in the present description comprises: selecting one or more resource block groups from among the resource block groups contained in at least one or more component carriers so as to generate an aggregated resource block group; and allocating resources in accordance with the configuration of the aggregated resource block group, and transceiving data. Here, information on the aggregated resource block group contains a component carrier indicator. | 10-25-2012 |
20120281578 | METHOD FOR TRANSCEIVING CHANNEL INFORMATION, AND TERMINAL AND BASE STATION USING SAME - The present description relates to a wireless communication system and to a method for transceiving channel information through carrier aggregation, and a terminal and a base station using the method. The method described in the present description comprises: receiving channel information from a user terminal, and generating a sub-band group from one or more subbands contained in at least one or more component carriers; and receiving, from the user terminal, channel information for each of the sub-band groups through a control channel. | 11-08-2012 |
20120300725 | SYSTEM INFORMATION TRANSMISSION AND RECEIVING METHOD OF MULTIPLE COMPONENT CARRIERS AND DEVICE THEREOF, AND SYSTEM INFORMATION TRANSMITTING AND RECEIVING/UPDATING DEVICE USING SAME - A base station and a user equipment (UE) transmit and receive one or more of a system information (SI) change notification message, which includes SI change notification information of a first component carrier in which system information is changed, and an SI validity verification message, which includes SI validity verification information of the first component carrier in which the system information is changed, in order to transmit and receive the system information in a wireless communication system using at least one component carrier; and the SI is transmitted by determining a transmission type of the system information according to priority between QoSs and power consumption of the UE, without generating an additional increase of signal quantities or power consumption when the SI is transmitted. | 11-29-2012 |
20120307772 | METHOD OF SWITCHING A PERIODIC/APERIODIC TRANSMISSION OF A CHANNEL ESTIMATION REFERENCE SIGNAL, AND APPARATUS AND METHOD FOR A TRANSMITTING/RECEIVING CHANNEL ESTIMATION REFERENCE SIGNAL USING THE SAME - A method for switching between periodic transmission and aperiodic transmission of a channel estimation reference signal for scheduling resources in an Orthogonal Frequency Division Multiple Access (OFDMA) system and an apparatus to transmit/receive the reference signal using the same. To schedule periodic and aperiodic transmission of the channel estimation reference signal, a predetermined type of transmission indicator is used, the transmission indicator including one or more bits of a periodic/aperiodic identification indicator. According to the present embodiment, when periodic and aperiodic transmission of the channel estimation reference signal is mixedly performed, interference between user equipment or between cells can be minimized, and a transmission efficiency of the reference signal can be enhanced. | 12-06-2012 |
20120314656 | METHOD AND APPARATUS FOR COMBINING AND TRANSCEIVING CONTROL INFORMATION - Disclosed are a method and apparatus for combining and transceiving control information. The method for combining and transmitting control information in accordance with one embodiment of the present invention comprises: a step in which a base station, which transceives control information and data information to/from a user terminal via a plurality of component carriers (CC), transmits control information via a first component carrier to the user terminal, and determines identification information for identifying a second component carrier so as to transmit data information via the second component carrier which is determined by the control information of the first component carrier; a step of determining indication information required for encoding the data information and/or control information of the second component carrier; a step of combining the identification information for identifying the second component carrier and the indication information; and a step of transmitting the control information of the first component carrier, including said combined information. | 12-13-2012 |
20120320843 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING EXTENSION INFORMATION OF COMPONENT CARRIER IN WIRELESS COMMUNICATION SYSTEM - A base station comprises: an area information generation unit which generates information for a determined second area by determining an additional assignment of the second area different from a first area to a component carrier (CC) of the first area having a bandwidth smaller than a bandwidth of a maximum assignable CC; a mapping control unit which controls an assignment of a reference signal to a frequency band including the first and second areas by generating the reference signal for channel estimation in the first and second areas; a signal generation unit which generates the information for the second area and the reference signal as a wireless signal; and a transmission unit for transmitting the generated wireless signal and is characterized by transmitting data to a user terminal and receiving the data from the user terminal by assigning the resources to the first and second areas. | 12-20-2012 |
20120322445 | METHOD AND APPARATUS FOR REDUCING CONSUMPTION OF TRANSMISSION POWER IN BASE STATION BY ADJUSTING TRANSMISSION INTERVAL OF CONTROL SIGNAL - A method for reducing the consumption of the transmission power in the base station by adjusting the transmission interval between the control signals comprises the steps of: changing the interval between the control signals transmitted from the base station from a first interval to a second interval and transmitting the control signal; receiving a first message including transmission interval adjustment request information of the control signal; and changing the interval between the control signals to the first interval and transmitting the control signal. | 12-20-2012 |
20130070693 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING MULTIPLE DATA TRANSMISSION RESULT - A method and an apparatus for transmitting and receiving multiple data transmission result, the apparatus comprises: a receiver in which a base station receives two or more uplink subframes that include independent data from a terminal; a reception verifier which verifies the independent data received from the receiver; a response data generator which generates a verification result for the independent data as response data; a signal generator which generates a downlink subframe by storing first information of the response data in a first section of a control area, and by storing second information of the response data in a field, which is not changed for a certain period of time, within a second section of the control area that is distinguished from the first section; and a transmitter which transmits the downlink subframe. | 03-21-2013 |
20140029696 | METHOD AND APPARATUS FOR ALLOCATING CHANNEL STATE INFORMATION-REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM - Disclosed are an apparatus for Channel State Information-Reference Signal (CSI-RS) allocation and a method for CSI-RS transmission using the same in a wireless communication system. A CSI-RS for each antenna port is allocated to REs or subcarriers on a basis of a symbol or symbol axis in a subframe or Resource Block (RB), and is allocated in such a manner that a distance between neighboring CSI-RS allocation REs or subcarriers may be 3 REs or subcarriers. Accordingly, in the range of following CSI-RS transmission overhead, CSI-RSs are allocated to a time-frequency resource domain in such a manner so as to have perfect orthogonality or quasi-orthogonality according to cells or cell groups. Then, the CSI-RSs, which have been allocated to the time-frequency resource domain, are transmitted. | 01-30-2014 |
20140211711 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING EXTENSION INFORMATION OF COMPONENT CARRIER IN WIRELESS COMMUNICATION SYSTEM - A base station includes: an area information generation unit which generates information for a determined second area by determining an additional assignment of the second area different from a first area to a component carrier (CC) of the first area having a bandwidth smaller than a bandwidth of a maximum assignable CC; a mapping control unit which controls an assignment of a reference signal to a frequency band including the first and second areas by generating the reference signal for channel estimation in the first and second areas; a signal generation unit which generates the information for the second area and the reference signal as a wireless signal; and a transmission unit for transmitting the generated wireless signal and is characterized by transmitting data to a user terminal and receiving the data from the user terminal by assigning the resources to the first and second areas. | 07-31-2014 |
20140355711 | METHOD AND APPARATUS FOR ALLOCATING CHANNEL STATE INFORMATION-REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM - Disclosed are an apparatus for Channel State Information-Reference Signal (CSI-RS) allocation and a method for CSI-RS transmission using the same in a wireless communication system. A CSI-RS for each antenna port is allocated to REs or subcarriers on a basis of a symbol or symbol axis in a subframe or Resource Block (RB), and is allocated in such a manner that a distance between neighboring CSI-RS allocation REs or subcarriers may be 3 REs or subcarriers. Accordingly, in the range of following CSI-RS transmission overhead, CSI-RSs are allocated to a time-frequency resource domain in such a manner so as to have perfect orthogonality or quasi-orthogonality according to cells or cell groups. Then, the CSI-RSs, which have been allocated to the time-frequency resource domain, are transmitted. | 12-04-2014 |
Patent application number | Description | Published |
20110105107 | APPARATUS AND METHOD FOR TRANSMITTING/RECEIVING ACTIVATION INDICATOR REGARDING COMPONENT CARRIER IN WIRELESS COMMUNICATION SYSTEM - A method for supporting activation/deactivation of serving cells by a base station (eNB) in a wireless communication system provides decreased overhead and decreased power consumption for a user equipment (UE). The method includes configuring M supportable serving cells in the UE, configuring an indicator indicating activation/deactivation of each of the M serving cells, configuring a medium access control (MAC) message which includes a MAC control element (CE) and a logical channel identifier (LCID), the MAC CE including the indicator configured for each of the M serving cells and having a length corresponding to an integer multiple of 8 bits, the LCID indicating that the MAC CE includes the indicator indicating activation/deactivation of each serving cell, and transmitting the configured MAC message to the UE. Accordingly, a control channel or data channel regarding a component carrier is selectively received depending on whether the component carrier is activated. | 05-05-2011 |
20110199951 | DISCONTINUOUS RECEPTION METHOD AND APPARATUS IN MULTI-COMPONENT CARRIER SYSTEM - An apparatus and a method for performing a Discontinuous Reception (DRX) in a multi-Component Carrier (CC) system are disclosed. The method includes determining whether a condition for an application of a DRX to a first CC is satisfied and, if the condition is satisfied, performing the DRX on the first CC based on DRX configuration information common to the first CC and a reference CC. The on-duration of the DRX applied to the first CC is synchronized with the on-duration of a DRX mode of the reference CC. Although CCs enter the DRX mode at different points of time, the active or inactive times of the DRX modes are synchronized with each other such that the PDCCHs of all the CCs may be detected at the active times of the respective CCs. | 08-18-2011 |
20110249641 | APPARATUS AND METHOD FOR PERFORMING RANDOM ACCESS IN MULTI-CARRIER SYSTEM - A method for performing a random access in a multi-carrier system includes transmitting a random access preamble on an uplink component carrier to a base station, and receiving a random access response on a first downlink component carrier. The random access response includes information regarding a second downlink component carrier used to transmit a contention resolution message indicating that a random access collision with other mobile stations are resolved. A base station to perform the method includes a preamble reception unit to receive the random access preamble, a response generation unit to generate the random access response, and a response transmission unit to transmit the random access response. A mobile station to perform the method includes a preamble transmission unit, a response reception unit, a carrier configuration unit, and a message reception unit. | 10-13-2011 |
20110268087 | APPARATUS AND METHOD FOR TRANSMITTING SOUNDING REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM SUPPORTING MULTIPLE COMPONENT CARRIERS - A method of receiving a sounding reference signal (SRS) in a wireless communication system supporting multiple component carriers by a base station is provided. The method includes determining periodic SRS (P-SRS) transmission or aperiodic SRS (A-SRS) transmission about at least one serving cell (SCell) to be configured for a user equipment (UE), transmitting a triggering message including an activation or deactivation of the at least one SCell and indicating information for the A-SRS transmission according to the determination, and receiving an A-SRS from the UE through an activated SCell from among the at least one SCell configured in the UE. Uplink scheduling for an additional secondary serving cell and data communication through the uplink scheduling can be performed rapidly, as compared with a scheme using only a periodic SRS. | 11-03-2011 |
20120014357 | APPARATUS AND METHOD FOR PERFORMING HANDOVER IN MULTIPLE COMPONENT CARRIER SYSTEM - A method for performing handover in a multiple component carrier system includes a UE transmitting a measurement report message, including measurement values for one or more cells, to a source BS, the source BS transmitting a handover request message, including at least one of a candidate cell list including at least one candidate cell to be used in a target BS, an aggregatable cell list including at least one aggregatable cell in which UE capability is taken into consideration, and a list of sensible cells including at least one cell defined based on a similarity sensitivity of a measured frequency, to the target BS based on the measurement value, the source BS checking the cell included in the at least one list, receiving a handover ACK message including a final cell from the target BS, and determining handover, and the source BS transmitting a handover command message to the UE. | 01-19-2012 |
20120083309 | APPARATUS AND METHOD FOR TRANSMITTING CONTROL INFORMATION FOR POWER COORDINATION IN MULTIPLE COMPONENT CARRIER SYSTEM - An apparatus and method for transmitting control information about power coordination in a multiple component carrier system is disclosed herein. This specification discloses receiving information about a mobile station which is used to determine a range of power coordination for a maximum uplink transmit power of the mobile station, from a base station, by obtaining the information, and transmitting an information response message to the base station, which includes the obtained subsidiary information. Further, compatibility with an existing system may be accomplished due to information about power coordination being provided through the use of an existing UE information procedure. | 04-05-2012 |
20120106477 | APPARATUS AND METHOD OF TRANSMITTING POWER INFORMATION REGARDING COMPONENT CARRIER IN MULTI-COMPONENT CARRIER SYSTEM - An apparatus and method for transmitting maximum transmit power information in a multi-component carrier system. A method for transmitting power information regarding a component carrier includes: calculating power headroom which can be additionally output from an activated uplink component carrier; calculating maximum transmit power configured for the activated uplink component carrier; generating a medium access control (MAC) message including a first field indicating the power headroom and a second field indicating the maximum transmit power; and transmitting the MAC message to a base station (BS). The BS can know about maximum transmit power of each uplink component carrier, preventing excessive uplink scheduling to thus reduce interference. Also, the BS can clearly know about to which uplink component carrier maximum transmit power is related. | 05-03-2012 |
20120195265 | ACK/NACK FEEDBACK METHOD AND COMMUNICATION APPARATUS USING SAME - Disclosed is a wireless communication system, and particularly, a technology of feedbacking an ACK/NACK or multiple ACK/NACKs through a single uplink component carrier in response to multi downlink information transmitted through multiple component carriers in a wireless communication system. | 08-02-2012 |
20120320853 | METHOD FOR TRANSMITTING DATA AND CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM, A SENDING DEVICE THEREFOR AND A RECEIVING DEVICE THEREFOR - A method and device for sending and receiving control information and data between a terminal and an eNB in a wireless communication system are disclosed, and a method and device for sending and receiving control information and data in accordance with hybrid automatic repeat technology are disclosed. A multiplexer outputs a plurality of hybrid repeat (HARQ) blocks that store data blocks to be transmitted via a plurality of component carrier waves, and outputs multiplexed data obtained by the multiplexing of the data blocks. Repeat data is transmitted by using a component carrier wave that differs from the component carrier wave used during the initial transmission, thereby obtaining gain of diverse channel states for predetermined component carrier waves and frequency bands, and so improving HARQ performance. | 12-20-2012 |
20130235804 | APPARATUS AND METHOD FOR TRANSMITTING/RECEIVING ACTIVATION INDICATOR REGARDING COMPONENT CARRIER IN WIRELESS COMMUNICATION SYSTEM - A method for supporting activation/deactivation of serving cells by a base station (eNB) in a wireless communication system provides decreased overhead and decreased power consumption for a user equipment (UE). The method includes configuring M supportable serving cells in the UE, configuring an indicator indicating activation/deactivation of each of the M serving cells, configuring a medium access control (MAC) message which includes a MAC control element (CE) and a logical channel identifier (LCID), the MAC CE including the indicator configured for each of the M serving cells and having a length corresponding to an integer multiple of 8 bits, the LCID indicating that the MAC CE includes the indicator indicating activation/deactivation of each serving cell, and transmitting the configured MAC message to the UE. Accordingly, a control channel or data channel regarding a component carrier is selectively received depending on whether the component carrier is activated. | 09-12-2013 |
20130242790 | APPARATUS AND METHOD FOR TRANSMITTING/RECEIVING ACTIVATION INDICATOR REGARDING COMPONENT CARRIER IN WIRELESS COMMUNICATION SYSTEM - A method for supporting activation/deactivation of serving cells by a base station (eNB) in a wireless communication system provides decreased overhead and decreased power consumption for a user equipment (UE). The method includes configuring M supportable serving cells in the UE, configuring an indicator indicating activation/deactivation of each of the M serving cells, configuring a medium access control (MAC) message which includes a MAC control element (CE) and a logical channel identifier (LCID), the MAC CE including the indicator configured for each of the M serving cells and having a length corresponding to an integer multiple of 8 bits, the LCID indicating that the MAC CE includes the indicator indicating activation/deactivation of each serving cell, and transmitting the configured MAC message to the UE. Accordingly, a control channel or data channel regarding a component carrier is selectively received depending on whether the component carrier is activated. | 09-19-2013 |
20130329673 | APPARATUS AND METHOD FOR TRANSMITTING/RECEIVING ACTIVATION INDICATOR REGARDING COMPONENT CARRIER IN WIRELESS COMMUNICATION SYSTEM - A method for supporting activation/deactivation of serving cells by a base station (eNB) in a wireless communication system provides decreased overhead and decreased power consumption for a user equipment (UE). The method includes configuring M supportable serving cells in the UE, configuring an indicator indicating activation/deactivation of each of the M serving cells, configuring a medium access control (MAC) message which includes a MAC control element (CE) and a logical channel identifier (LCID), the MAC CE including the indicator configured for each of the M serving cells and having a length corresponding to an integer multiple of 8 bits, the LCID indicating that the MAC CE includes the indicator indicating activation/deactivation of each serving cell, and transmitting the configured MAC message to the UE. Accordingly, a control channel or data channel regarding a component carrier is selectively received depending on whether the component carrier is activated. | 12-12-2013 |
20140045504 | APPARATUS AND METHOD FOR PERFORMING HANDOVER IN MULTIPLE COMPONENT CARRIER SYSTEM - A method for performing handover in a multiple component carrier system includes a UE transmitting a measurement report message, including measurement values for one or more cells, to a source BS, the source BS transmitting a handover request message, including at least one of a candidate cell list including at least one candidate cell to be used in a target BS, an aggregatable cell list including at least one aggregatable cell in which UE capability is taken into consideration, and a list of sensible cells including at least one cell defined based on a similarity sensitivity of a measured frequency, to the target BS based on the measurement value, the source BS checking the cell included in the at least one list, receiving a handover ACK message including a final cell from the target BS, and determining handover, and the source BS transmitting a handover command message to the UE. | 02-13-2014 |
Patent application number | Description | Published |
20090001393 | MULTI-LIGHT EMITTING DIODE PACKAGE - A multi-LED package includes a heat sink including a primary slug and a secondary slug separated from each other, a primary LED chip mounted on the primary slug, one or more secondary LED chips mounted on the secondary slug, a lead frame structure electrically wired to the primary and secondary LED chips, and a phosphor covering at least a part of the primary LED chip. Another multi-LED package includes a heat sink having an upper surface and partitions protruding therefrom, a primary LED chip mounted inside the partitions, one or more secondary LED chips mounted outside the partitions, a lead frame structure electrically wired to the primary and secondary LED chips, and a phosphor covering at least a part of the primary LED chip. | 01-01-2009 |
20100072499 | LED PACKAGE - The present invention has an object to provide a LED package having a means capable of precisely limiting a region in which a resin containing a phosphor is dotted on a member on which an LED chip is supported. To this end, an LED package according to the present invention comprises a package body having an inner space with an LED chip mounted therein, the inner space being open toward a light emission direction; a chip support member mounted to the inner space of the package body to support the LED chip; a phosphor resin member formed by dotting resin containing a phosphor onto the LED chip; and a region limitation means provided on the chip support member and defining a region in which the phosphor resin member is formed. | 03-25-2010 |
20100237800 | LIGHT EMITTING DEVICE AND DRIVING CIRCUIT THEREOF - A light emitting device comprises a first light emitting unit and a second light emitting unit connected in series with each other, and a PTF unit connected in parallel with the first light emitting unit and in series with the second light emitting unit. Each of the first light emitting unit and second light emitting unit comprises at least one LED. The PTF unit allows the second light emitting unit to be operated before operation of the first light emitting unit upon application of an AC voltage source. The light emitting device reduces total harmonic distortion and flickering, and improves power factor and optical efficiency. A driving circuit of the light emitting device is also disclosed. | 09-23-2010 |
20100328961 | LIGHT-EMITTING MODULE - A light-emitting module includes a printed circuit board (PCB), a fastening member, and a light-emitting package. The PCB has a power-supplying pad to provide electrical power. The fastening member is disposed on the PCB and has a package-receiving hole exposing the power-supplying pad. The light-emitting package is received by the package-receiving hole such that the light-emitting package is electrically connected to the power-supplying pad and detachably coupled with the fastening member. Therefore, the light-emitting package may be easily combined with the PCB, and the light-emitting package may be replaced when desired. | 12-30-2010 |
20110193111 | MULTI-LIGHT EMITTING DIODE PACKAGE - A multi-LED package includes a heat sink including a primary slug and a secondary slug separated from each other, a primary LED chip mounted on the primary slug, one or more secondary LED chips mounted on the secondary slug, a lead frame structure electrically wired to the primary and secondary LED chips, and a phosphor covering at least a part of the primary LED chip. Another multi-LED package includes a heat sink having an upper surface and partitions protruding therefrom, a primary LED chip mounted inside the partitions, one or more secondary LED chips mounted outside the partitions, a lead frame structure electrically wired to the primary and secondary LED chips, and a phosphor covering at least a part of the primary LED chip. | 08-11-2011 |
20120056217 | LIGHT EMITTING DIODE PACKAGE - Disclosed herein is a light emitting diode package including a package body having a cavity, a light emitting diode chip having a plurality of light emitting cells connected in series to one another, a phosphor converting a frequency of light emitted from the light emitting diode chip, and a pair of lead electrodes. The light emitting cells are connected in series between the pair of lead electrodes. | 03-08-2012 |
20140312380 | LIGHT EMITTING DIODE PACKAGE - A light emitting diode package includes a package body having a cavity, a light emitting diode chip having a plurality of light emitting cells connected in series to one another, a phosphor converting a frequency of light emitted from the light emitting diode chip, and a pair of lead electrodes. The light emitting cells are connected in series between the pair of lead electrodes. | 10-23-2014 |
20150214453 | LIGHT EMITTING DIODE PACKAGE - A light emitting diode package includes a package body having a cavity, a light emitting diode chip having a plurality of light emitting cells connected in series to one another, a phosphor converting a frequency of light emitted from the light emitting diode chip, and a pair of lead electrodes. The light emitting cells are connected in series between the pair of lead electrodes. | 07-30-2015 |