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Carrier Aggregation patents



      
           
This page is updated frequently with new Carrier Aggregation-related patent applications. Subscribe to the Carrier Aggregation RSS feed to automatically get the update: related Carrier RSS feeds. RSS updates for this page: Carrier Aggregation RSS RSS


Apparatus and method for controlling multi-carrier supporting operation

Pantech

Apparatus and method for controlling multi-carrier supporting operation

Selection of a radio cell sector

Telefonaktiebolaget L M Ericsson (publ)

Selection of a radio cell sector

Date/App# patent app List of recent Carrier Aggregation-related patents
01/29/15
20150031410
 Method and device for controlling uplink transmit power in wireless access system patent thumbnailnew patent Method and device for controlling uplink transmit power in wireless access system
The present invention discloses a method and device for controlling uplink transmit power of a terminal in a wireless access system that supports carrier aggregation/multiple cells. In particular, the method may include receiving a first ta value and a second ta value for a first timing advance group (tag) including one or more component carriers and a second tag including one or more component carriers, adjusting uplink transmission timing of the first tag and the second tag by using the first ta value and the second ta value, resetting a transient period between a first group of component carriers and a second group of component carriers exceeds a power control requirement, and controlling uplink transmit power according to the reset transient period..
Lg Electronics Inc.
01/29/15
20150030004
 Selection of a radio cell sector patent thumbnailnew patent Selection of a radio cell sector
The present disclosure concerns radio communication. In one of its aspects, the technology presented herein concerns a method for selecting the most suitable secondary carrier for carrier aggregation when employing a combined radio cell including multiple radio sectors a—1, a—2, a—3 of a first cell (cell a) and multiple radio sectors b_x, b_y, b_z of a second cell (cell b)..
Telefonaktiebolaget L M Ericsson (publ)
01/29/15
20150029984
 Allocating a control channel for carrier aggregation patent thumbnailnew patent Allocating a control channel for carrier aggregation
Methods for allocating a physical downlink control channel (pdcch) to reduce a number of pdcch candidates in a search space for carrier aggregation on a user equipment (ue) are disclosed. The method comprises the step of selecting a control channel element (cce) aggregation level for a pdcch allocation for each of a plurality of user equipments (ues) at an evolved nodeb (enb).
01/29/15
20150029917
 Apparatus and  controlling multi-carrier supporting operation patent thumbnailnew patent Apparatus and controlling multi-carrier supporting operation
Provided is an apparatus and method for not performing an inter-frequency measurement to reduce a current to be used by a terminal providing a multi carrier (mc) function or a carrier aggregation (ca) function. When the terminal satisfies predetermined conditions, the terminal may be operated in a single carrier mode in which the inter-frequency measurement is not performed and thus, a current to be used for the inter-frequency measurement may be reduced..
Pantech Co., Ltd.
01/22/15
20150023305
 Uplink control information transmission on backward compatible pucch formats with carrier aggregation patent thumbnailUplink control information transmission on backward compatible pucch formats with carrier aggregation
A method for reporting uplink control information (uci) on a user equipment (ue) is described. A number of bits for a channel quality indicator and/or a precoding matrix index and/or a rank indication (cqi/pmi/ri) is obtained.
Sharp Kabushiki Kaisha
01/22/15
20150023286
 Method and  transmitting control information in a wireless communication patent thumbnailMethod and transmitting control information in a wireless communication
The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for transmitting acknowledgement/negative ack (ack/nack) in a wireless communication system which supports carrier aggregation, and to an apparatus for the method.
Lg Electronics Inc
01/22/15
20150023229
 Systems and methods for carrier aggregation patent thumbnailSystems and methods for carrier aggregation
A user equipment (ue) for performing carrier aggregation is described. The ue includes a processor and instructions stored in memory that is in electronic communication with the processor.
Sharp Laboratories Of America, Inc.
01/22/15
20150023228
 Systems and methods for carrier aggregation patent thumbnailSystems and methods for carrier aggregation
A user equipment (ue) for performing carrier aggregation is described. The ue includes a processor and instructions stored in memory that is in electronic communication with the processor.
Sharp Laboratories Of America, Inc.
01/22/15
20150023197
 Common reference signal configuration for carrier aggregation patent thumbnailCommon reference signal configuration for carrier aggregation
Eliminating or reducing transmission of common signals for enhanced spectral efficiency, improved support for heterogeneous networks, network energy saving possibilities, can be obtained by apparatuses and methods according to certain embodiments. A method for operating a user equipment can include receiving a measurement object from a network for detection of one or more predetermined type cells.
Nokia Corporation
01/22/15
20150023145
 Method for transmitting and receiving signal on basis of dynamic change in wireless resource in wireless communication system to which carrier aggregation scheme is applied, and device therefore patent thumbnailMethod for transmitting and receiving signal on basis of dynamic change in wireless resource in wireless communication system to which carrier aggregation scheme is applied, and device therefore
A method for transmitting and receiving a signal by a terminal a wireless communication system is disclosed in the present invention. More particularly, the method comprises the steps of: receiving an indicator for changing the usage of a specific subframe corresponding to a sub-component carrier from a network; determining whether near-end crosstalk between the sub-component carrier and another component carrier occurs if the usage of the subframe is changed according to the indicator; and transmitting and receiving a signal to and from the network through the sub-component carrier according to the changed usage if it is determined that the near-end crosstalk does not occur..
Lg Electronics Inc.
01/15/15
20150018002

Lte operation in small cells using dynamic shared spectrum


Systems, methods, and apparatus may be used to provide assistance for connection procedures in a hierarchical network where macro cells may be operating in licensed spectrum while small cells may be operating in dynamic and shared spectrums, such as tvws. This may be done, for example, to allow an lte system performing carrier aggregation (ca) to reconfigure itself to change from a supplementary cell (suppcell) in one dynamic and shared spectrum channel to a suppcell in another dynamic and shared spectrum channel..
Interdigital Patent Holdings, Inc.
01/15/15
20150016365

Carrier aggregation optimization


The present invention provides a method, apparatus and a computer program product for carrier aggregation optimization. The present invention includes receiving, at a base station, information from another base station regarding usage of pcell and scell per carrier at the another base station, analyzing, at the base station, the received information, configuring, at the base station, pcells and scells for user equipment served by the base station based on the analysis of the received information..
Nokia Solutions And Networks Oy
01/15/15
20150016315

Method for transreceiving signals and same


The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for transmitting an uplink signal in a wireless communication system supporting carrier aggregation (ca), and to an apparatus for same, comprising the steps of: establishing a first cell having a first time division duplex (tdd) uplink-downlink (ul-dl) configuration and a second cell having a second tdd ul-dl configuration; receiving data through a dl subframe of the first cell; and transmitting reception reply information with respect to the data through a ul subframe of the second cell..
Lg Electronics Inc.
01/08/15
20150009923

Method and apparatus to report and handle buffer status for user equipment working in inter-site carrier aggregation mode


In inter-site carrier aggregation (ca) mode, a user equipment (ue) may benefit from methods and systems for handling ue buffer status reports. For dual-carrier uplink control information transmission mode, for example, the user equipment can send the buffer status report only to the pico enode b (enb).
Nokia Corporation
01/08/15
20150009872

Method for transreceiving signal and same


The present invention relates to a wireless communication system. More particularly, the present invention provides a method for carrying out a hybrid automatic repeat request (harq) in a wireless communication system supporting carrier aggregation, and to an apparatus for same, comprising the steps of: setting a first cell having a first time division duplex (tdd) uplink-downlink (ul-dl) configuration and a second cell having a second tdd ul-dl configuration; receiving data through a dl subframe of the first cell; and saving at least a portion of the data to a harq soft buffer when decoding of the data is unsuccessful, wherein the size of the harq soft buffer is determined on the basis of the number of hear processes of the first cell, and the number of harq processes of the first cell is determined on the basis of the number of subframes of which the first cell is the dl within a specific harq round trip time (rtt), wherein at least one subframe of which the first cell is the dl and the second cell is the ul is excluded when determining the number of the harq processes of the first cell..
Lg Electronics Inc.
01/08/15
20150009854

Method for reporting the results of specific reference-cell-based quality measurement in a mobile communication system using carrier aggregation, and the method


The present invention relates to a method in which a terminal reports the results of quality measurement based on a specific reference cell from among a plurality of serving cells for the terminal in a mobile communication system using carrier aggregation. The present invention also relates to a terminal apparatus for the method.
Lg Electronics Inc.
01/01/15
20150005027

Method for uplink power control, network node and system


Embodiments of the present invention disclose a method for uplink power control, a network node and a system, which relates to the field of communication technologies, and the method includes: a first network node transmits a first indication message to a second network node, wherein the first indication message includes a time pattern and/or a maximum transmission power for an uplink transmission performed by a user equipment (ue) on the second network node, and the time pattern is used for controlling a transmission time of the uplink transmission performed by the ue. The present invention is applicable to uplink power control for the user equipment ue in a carrier aggregation scenario..
Huawei Technologies Co., Ltd.
01/01/15
20150003418

Inter-site carrier aggregation


The invention relates to an apparatus including at least one processor and at least one memory including a computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to: convey a radio resource reconfiguration message to a user device for carrying out secondary cell configuration for downlink data conveyance using inter-site carrier aggregation functionality, and obtain and/or convey information on completion of the secondary cell configuration and/or activate downlink data forwarding to a secondary cell node.. .
Nokia Solutions And Networks Oy
01/01/15
20150003416

Handover performed in consideration of uplink/downlink component carrier setup


The present invention relates to a wireless communication system which supports carrier aggregation. More particularly, the present invention relates to a method and to an apparatus for enabling a user equipment to perform a handover in a wireless communication system which supports carrier aggregation.
Lg Electronics Inc.
01/01/15
20150003382

Transmission of harq control information from a user equipment for downlink carrier aggregation


Methods and apparatuses are provided for transmission of at least two harq-ack bits. Information for at least two configured cells and information for a transmission mode for each of the at least two configured cells are received.
Samsung Electronics Co., Ltd.
01/01/15
20150003348

Extension carrier discovery for carrier aggregation


Two alternative embodiments are disclosed to enable a user equipment to efficiently discover small cells using a secondary carrier. The user equipment has a primary carrier link to a base station.
Ntt Docomo, Inc.
01/01/15
20150003302

Uplink control signaling for joint fdd and tdd carrier aggregation


Embodiments of the invention are directed to a method for operating a mobile device including establishing a connection to a first base station designated as a pcell and establishing a connection to a second base station designated as a scell. When the mobile device receives pdsch from a tdd scell in a subframe n, it transmits a harq ack to an fdd pcell in subframe n+4.
Texas Instruments Incorporated
12/25/14
20140378075

Multi-frequency range processing for rf front end


Techniques for supporting multi-frequency range signal processing for a wireless device. In an aspect, a first antenna is provided to support first and third frequency ranges.
Qualcomm Incorporated
12/25/14
20140376490

System and sharing a control channel for carrier aggregation


A method for processing a control channel at a user agent (ua) to identify at least one of an uplink and a downlink resource allocated by a resource grant within a multi-carrier communication system wherein resource grants are specified by control channel element (cce) subset candidates wherein the carriers used for data transmission and reception are configured carriers, the method comprising the steps of receiving activation signals specifying active and deactivated carriers from among the configured carriers, for active carriers (i) identifying a number of cce subset candidates to decode and (ii) decoding up to the identified number of cce subset candidates in an attempt to identify the resource grant; and for deactivated carriers, ignoring cce subset candidates associated with the deactivated carriers.. .
Blackberry Limited
12/25/14
20140376457

Search space for epdcch control information in an ofdm-based mobile communication system


The present invention relates to a method for receiving control information within a subframe of a multi-carrier communication system supporting carrier aggregation, the method comprising the following steps performed at a receiving node: performing a blind detection for the control information within a search space by means of a first search pattern, wherein the first search pattern is one of a plurality of search patterns, each of the plurality of search patterns comprising a plurality of candidates distributed on any of a plurality of aggregation levels, and wherein the plurality of search patterns further comprises a second search pattern whose candidates are non-overlapping the candidates of the first search pattern on the same aggregation levels.. .
Panasonic Corporation
12/25/14
20140376428

Multi-frequency range processing for rf front end


Techniques for supporting multi-frequency range signal processing for a wireless device. In an aspect, a first antenna is provided to support first and third frequency ranges.
Qualcomm Incorporated
12/25/14
20140376425

Random access channel enhancement for carrier aggregation with different uplink/downlink configuration


The present invention relates to methods, apparatuses and a computer program product for random access channel enhancement for carrier aggregation with different uplink/downlink configuration. The present invention includes detecting, at a user equipment, a downlink control channel in a specific downlink subframe on a first component carrier, receiving, at the user equipment, a downlink shared channel on the first component carrier, and transmitting, after a predetermined period, a random access channel in a specific uplink subframe on a second component carrier, the specific uplink subframe overlapping the specific downlink subframe on the first component carrier..
Broadcom Corporation
12/25/14
20140376421

Method for transmitting control information and same


The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and an apparatus for transmitting uplink control information in the wireless communication system, which supports carrier aggregation and operates by a tdd, and comprises the steps of: generating a first harq-ack set with respect to a first cell by using an l1 value; generating a second harq-ack set with respect to a second cell by using an l2 value; and transmitting bit values, which correspond to the first and second harq-ack sets are transmitted through a pusch from a subframe n, wherein l1=min (m1, w) and l2=min (m2, w) when the value (w) of a ul dai corresponding to the pusch is 1 or 2, and l1=l2=w when the value (w) of the ul dai corresponding to the pusch is 3 or 4, wherein min (a, b) represents a smaller number from a and b, m1 corresponds to the number of downlink subframes that correspond to an uplink subframe n with respect to the first cell, m2 corresponds to a the number of downlink subframes that correspond to the uplink subframe n with respect to the second cell, wherein the first cell and the second cell have different ul-dl configurations..
Lg Electronics Inc.
12/25/14
20140376417

Carrier aggregation arrangement using triple antenna arrangement


Front end circuitry includes at least three antenna nodes, a first duplexer, a second duplexer, a first diplexer, transceiver circuitry, and front end switching circuitry. The transceiver circuitry is coupled to the first duplexer, the second duplexer, and the first diplexer.
Rf Micro Devices, Inc.
12/18/14
20140370905

Ue capability report method and apparatus in mobile communication system


A method and an apparatus for reporting a capability of a user equipment (ue) supporting advanced functions such as carrier aggregation (ca) are provided. The method includes checking, when a control message requesting a capability report is received, a radio access technology (rat) type and transmitting, when the rat type is set to evolved universal terrestrial radio access (eutra), at least one band combination information on at least one band combination supported by the terminal.
Samsung Electronics Co., Ltd.
12/18/14
20140370882

Method and concurrent communication with multiple wireless communication systems of different radio access technologies


A wireless device supporting concurrent communication with multiple wireless systems of different radio access technologies (rats) are disclosed. In an exemplary design, an apparatus includes first and second receivers supporting concurrent signal reception from wireless systems of different rats.
Qualcomm Incorporated
12/18/14
20140369324

Uplink signal sending method and user equipment


An uplink signal sending method applied to a carrier aggregation system, comprises: after configuring more than two timing advances, user equipment rate-matching uplink signals and/or uplink channels between which front-to-back symbol overlap will occur in time domain over different uplink carriers, and then sending the uplink signals and/or uplink channels, or discarding and then sending the uplink signals and/or uplink channels, or sending simultaneously.. .
Zte Corporation
12/18/14
20140369322

Performing multiple timing advance adjustments in a carrier aggregation communication system


Technology for performing multiple timing advances in a carrier aggregation communication system is disclosed. A method comprises communicating a random access preamble from a ue to an enodeb via a pcell associated with a selected component carrier of the carrier aggregation.
12/18/14
20140369313

Method and enabling re-establishment procedure in a heterogeneous network


The present invention relates to method and apparatus for enabling re-establishment procedure in a heterogeneous network. According to an embodiment of the present invention, a method for a master node working with inter-site carrier aggregation in a heterogeneous network is provided.
Nokia Corporation
12/18/14
20140369244

Periodic channel state information reporting for time division duplex (tdd) carrier aggregation systems


Technology for reporting periodic channel state information (csi) is disclosed. One method can include determining a reporting period (npd) of a user equipment (ue) for a serving cell.
12/18/14
20140369242

Methods of ul tdm for inter-enodeb carrier aggregation


One or more embodiments provide a method implemented in a user equipment (ue) used in a wireless communications system. The method includes transmitting an indication to a base station that the ue is capable of transmitting on a single uplink carrier frequency and downlink carrier aggregation.
Samsung Electronics Co., Ltd.
12/18/14
20140369223

Communication system, base station apparatus, mobile terminal apparatus and communication method


The present invention is designed to detect an s-cell efficiently, in a short time, upon carrier aggregation in a hetnet. In a communication system where carrier aggregation is executed between a first carrier (cc #1) and a second carrier (cc #2), a macro base station apparatus (20a) generates a carrier detection signal that makes a mobile terminal apparatus (10) detect the second carrier (cc #2), such that carrier aggregation is executed with the first carrier (cc #1), and transmits the carrier detection signal to an rrh base station apparatus (20b) such that the carrier detection signal is transmitted from the rrh base station apparatus (20b) to the mobile terminal apparatus (10) in the second carrier (cc #2) in which the carrier detection signal can be allocated with a higher density than a reference signal of the first carrier (cc #1).
Ntt Docomo, Inc.
12/18/14
20140369201

Multi-rat carrier aggregation for integrated wwan-wlan operation


Systems and methods for multi-radio access technology (rat) carrier aggregation (mrca) wireless wide area network (wwan) assisted wireless local area network (wlan) flow mapping and flow routing are disclosed. One system comprises a dynamic flow mapping module that is configured to form a flow-mapping table to dynamically map service flows between the wwan radio and the wlan radio in the wireless device.
12/11/14
20140362815

Method for transmitting ack/nack signal in wireless communication system applied carrier aggregation and apparatus therefor


A method for transmitting acknowledgement/negative-acknowledgement (ack/nack) state information in a wireless communication system, the method including receiving, by a user equipment (ue), multiple transmission blocks through multiple downlink component carriers from a base station (bs); transmitting, by the ue, multiple transmission block ack/nack state information through a single uplink component carrier to the bs. The multiple transmission block ack/nack state information indicates at least two different numbers of ack responses among ack/nack responses corresponding to each of the multiple transmission blocks..
12/11/14
20140362811

Sounding mechanism under carrier aggregation


Sounding mechanism for lte-a systems under carrier aggregation is provided. A ue receives an uplink or downlink grant transmitted from an enb over a primary carrier in a multi-carrier lte-a system.
12/11/14
20140362803

Method for a user terminal to random access a carrier aggregation mobile communication system


A method for random access to a base station by a user equipment (ue) in a mobile communication system using carrier aggregation in which communication is conducted over a plurality of component carriers, and a terminal for the method are disclosed. When the ue performs a contention-based random access procedure in the mobile communication system to which ca technology is applied, the ue considers an uplink grant signal as a contention resolution message when receiving the uplink grant signal from a enb only when the uplink grant signal is received through a downlink cc corresponding to an uplink cc used to transmit a random access preamble or a third message, to thereby prevent contention resolution from being erroneously ended..
12/11/14
20140362780

Lte/lte-a uplink carrier aggregation using unlicensed spectrum


Methods, systems, and apparatuses are described for wireless communications. In one method, an uplink grant may be received over a licensed spectrum.
12/04/14
20140355539

Method and performing random access process in wireless communication system


The present invention relates to a wireless communication system. In detail, the present invention is a method in which user equipment for which a plurality of cells is constituted receives control information in a carrier aggregation-based wireless communication system, and an apparatus for the method.
12/04/14
20140355526

Low cost and robust receiver architecture for down link carrier aggregation


Various configurations and arrangements of systems and methods for providing multi-carrier aggregation are described. A system in accordance with the disclosure can include a first mixer configured to receive a first signal in a first frequency band, a second mixer configured to receive a second signal in a second frequency band, a third mixer configured to receive the second signal in the second frequency band, and a fourth mixer configured to receive a third signal in a third frequency band.
11/27/14
20140349701

Uplink power headroom management for connectivity with logically separate cells


Power headroom management in uplink carrier aggregation for connectivity with logically separate cells of a wireless communications system is performed by a network entity, alone or in combination with another network entity, one or more mobile entities, or both. This may include determining an uplink power allocation across at least two independently controlled cells of a wireless communication network for a mobile entity served by at least two independently controlled cells of a wireless communication network, subject to a total ph constraint for uplink transmissions by the mobile entity.
11/27/14
20140348274

Receiver front end for carrier aggregation


Techniques for providing a receiver front end supporting carrier aggregation with gain alignment and improved matching across modes. In an aspect, auxiliary circuitry is configurable to selectively enable or disable mutual coupling between a source degeneration inductor of an lna input transistor and an auxiliary inductor.
11/27/14
20140348211

Systems/methods of adaptively varying a spectral content of communications


A spectral content of a baseband waveform is varied and a measure of the baseband waveform whose spectral content has been varied is used by a transmitter in order to convey information. According to embodiments of inventive concepts, a set of frequencies that is used to provide spectral content to the baseband waveform is varied.
11/27/14
20140348115

Methods and system for communicating control information using carrier aggregation


An apparatus may include a radio frequency (rf) transceiver to receive a first message over a first carrier in a first band in a downlink sub-frame of a first radio frame in a communications link, where the communications link comprises interband carriers aggregated over primary and secondary cells. The apparatus may also include a processor and a reply message assignment module operable on the processor to determine a downlink sub-frame in which the downlink transmission is received and to adjust timing of a reply/acknowledge message to be sent by the rf transceiver in response to the first message so as to coincide with a predetermined uplink sub-frame of a radio frame.
11/27/14
20140348105

Signaling of uplink scheduling information in case of carrier aggregation


An apparatus and a method is provided, by which data is sent to and/or received from a first network control node and at least one second network control node by a carrier aggregation, uplink scheduling information is established and sending of the uplink scheduling information is managed individually for the first network control node and the at least one second network control node.. .
11/27/14
20140348048

Method and device for allocating resources to carrier response information


A method and apparatus for allocating resources to carrier response information feedback are disclosed. Wherein, when transmit power control (tpc) command in downlink control information (dci) for each secondary component carrier in carrier aggregation is different, physical uplink control channel (pucch) resources allocated to the response information feedback of the secondary component carriers are high-layer configuration pucch resources designated by tpc command in the dci which triggers data services in the secondary component carriers.
11/27/14
20140348038

Radio communication system, radio base station apparatus, user terminal and radio communication method


The present invention is designed to prevent the decrease of capacity even when the ratio of uplink subframes and downlink subframes is changed in each component carrier in tdd carrier aggregation. With the radio communication method according to the present invention, a radio base station apparatus generates a downlink control channel signal containing downlink control information including carrier indicator field information, and transmits the downlink control channel signal to a user terminal, and the user terminal receives the downlink control channel signal and executes signal processing with respect to the downlink signal in accordance with the downlink control information.
11/20/14
20140342680

Signal amplifying apparatus, transmitter, and signal amplifying method


A transmission signal amplifying apparatus has an ofdm subcarrier division unit, a transmission side analog unit, a digital distortion compensation unit, and a main signal combiner. The ofdm subcarrier division unit divides a signal whose frequency bands are continuous, and outputs a plurality of subcarrier aggregations obtained by the division in a state in which the frequency bands are adjacent to each other.
11/20/14
20140342678

Tunable filter front end architecture for non-contiguous carrier aggregation


Front end circuitry for a mobile terminal includes separate receive paths and filtering elements for different portions of each operating band. Accordingly, the filtering elements for each receive path can be designed with a smaller pass-band, thereby reducing the complexity of filtering circuitry in the front end circuitry and improving the efficiency thereof..
11/20/14
20140341192

Method and system for the allocation of measurement gaps in a carrier aggregation environment


A method, network element and user equipment, where in one embodiment at a network element, allocating a measurement gap configuration for a user equipment (ue) capable of operating in a carrier aggregation environment using at least first and second component carriers; and sending the measurement gap allocation to the ue, the allocation indicating a first measurement gap configuration for the first component carrier, the first measurement gap configuration being different than a second measurement gap configuration allocated for the second component carrier. In another embodiment at a ue capable of operating in a carrier aggregation environment using at least first and second component carriers, sending a measurement gap preference to a network, the preference including preference information indicating a preference for a first measurement gap configuration for the first component carrier, the first measurement gap configuration being different than a second measurement gap configuration for the second component carrier..
11/20/14
20140341168

Apparatus and supporting asymmetric carrier aggregation in wireless communication system


An apparatus and a method for operating a mobile station in a wireless communication system are provided. The method includes receiving first information transmitted on a secondary carrier from a base station, and transmitting second information for feedback related to the secondary carrier at a feedback region in a primary carrier based on the first information to the base station..
11/20/14
20140341167

Sounding mechanism and configuration under carrier aggregation


A method of multi-set rrc signaling for ap-srs configuration is provided to enhance ap-srs flexibility. An enb transmits a plurality of sets of ue-specific srs parameters to a ue via upper layer messaging in a multi-carrier wireless communication system.
11/20/14
20140341166

Handover during carrier aggregation operation in wireless communication network


Methods for performing handovers and addition of carriers during carrier aggregation operation are described. A mobile station can indicate failure to perform downlink synchronization to some but not all cells of a target enb, in response to a handover command.
11/20/14
20140341143

Method of sending/receiving control information and device therefor


The present invention relates to a wireless communication system. In particular, the present invention relates to a method and device for receiving control information regarding a coordinated multi-point (comp) set including a first cell and a second cell from a serving/transmitting point in a carrier aggregation (ca) based wireless communication system.
11/20/14
20140341126

Contiguous intra-band carrier aggregation (ca), pucch, and quasi-contiguous uplink resource allocation


A method and apparatus for allocating quasi-contiguous uplink data resources for a user device is provided. Transmission of data comprise at least two data clusters of sub carriers expanding over gaps reserved for uplink control channel in order, for example, to mitigate transmission power reductions due to multi-cluster transmission..
11/20/14
20140341065

Priority rules of periodic csi reporting in carrier aggregation


A method of determining priority rules for periodic csi reporting in carrier aggregation is proposed. A ue obtains channel state information (csi) feedback for multiple downlink component carriers (ccs) in a multi-carrier wireless communication network.
11/20/14
20140341011

Method and controlling random access in wireless communication system supporting carrier aggregation


A random access procedure control method and apparatus is provided for controlling a random access procedure efficiently in a mobile communication system supporting carrier aggregation. The method for controlling random access procedure of a terminal in a wireless communication system having a primary cell and at least one secondary cell includes initiating a random access procedure in the primary cell and the at least one secondary cells, detecting a random access failure of a terminal performing the random access procedure, determining whether the random access failure is detected in the primary cell or the at least one secondary cell, and determining whether to continue the random access procedure according to a result of the determining of whether the random access failure is detected..
11/13/14
20140335876

Radio operations in a carrier aggregation system


A method comprises, in a carrier aggregation system having multiple component carriers, utilizing an air interface based collision avoidance procedure on at least one component carrier that is associated to a cellular radio access technology to check that a radio resource in the at least one component carrier is available; and thereafter communicating on the radio resource using the cellular radio access technology only if the check reveals that the radio resource is available.. .
11/13/14
20140334445

Method, device and system for cell handover in telecommunication system supporting carrier aggregation


A method, device and system for a cell handover in a telecommunication system supporting carrier aggregation. The method may include: a base station (bs) determines that whether carrier components corresponding to one or more cells to be accessed are in the same frequency band, wherein the one or more cells to be accessed belong to a target bs, and are selected by a terminal which needs to perform the cell handover and is served by the bs; if yes, the bs encapsulates configuration information of all the cells in the one or more cells to be accessed in a handover command for initiating cell handover; otherwise, the bs encapsulates configuration information of one or more cells in the one or more cells to be accessed in the handover command, and sends the handover command to the target bs..
11/13/14
20140334430

Method and receiving a downlink signal in a wireless communication system supporting carrier aggregation


The present invention relates to a method for receiving a downlink signal at a terminal in a wireless communication system. In particular, the method comprises: receiving a control channel to be transmitted to a specific subframe via a first carrier; and decoding a data channel corresponding to the control channel to be transmitted to the specific subframe via a second carrier, using at least one parameter included in the control channel, wherein information on the orthogonal frequency division multiplexing (ofdm) start symbol of data channels that are transmitted via each of at least one carrier allocated to the terminal is signaled through an upper layer..
11/13/14
20140334419

Method for transceiving control information and same


The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and an apparatus for transmitting uplink control information in a terminal for which a coordinated multi-point (comp) set including a plurality of cells is constructed in a carrier aggregation-based wireless communication system.
11/13/14
20140334395

Method and transmitting control information in a wireless communication system


The invention relates to a wireless communication system, and more particularly, to a method and apparatus for transmitting control information. The wireless communication system may support carrier aggregation (ca).
11/13/14
20140334359

Systems and methods for carrier aggregation


A user equipment (ue) for performing carrier aggregation is described. The ue includes a processor and instructions stored in memory that is in electronic communication with the processor.
11/06/14
20140328436

Receiver front-end architecture for carrier aggregation


A receiver front-end includes a receive path configured to receive an input signal. Additionally, the receiver front-end also includes a low noise amplifier having a common input stage and multiple separate output stages, wherein each separate output stage is configured to be separately activated and connected to a receive signal mixer that provides signal demodulation of the input signal employing one of an aggregation of receiver carriers.
11/06/14
20140328316

Rate capping with multiple carrier aggregation schedulers


Requests for carrier aggregation scheduling for a user equipment are received from a first cell used for carrier aggregation and n second cells. The requests include a first scheduling decision of the first cell and n second scheduling decisions of the n second cells.
11/06/14
20140328284

Secondary carrier activation/deactivation mobile communication system supporting carrier aggregation


A method for activating/deactivating secondary carriers of a user equipment (ue) in a mobile communication system supporting carrier aggregation is provided. The method comprises, receiving a control message including an activation/deactivation control element (ce) in a first sub-frame from a base station, identifying an activation command or a deactivation command of at least one secondary carrier based on the control message, determining whether a current sub-frame is a second sub-frame or not, performing at least one first operation for the at least one secondary carrier in a second sub-frame, and performing, when the activation/deactivation ce indicates deactivation of the at least one secondary carrier, at least one second operation for the at least one secondary carrier no later than the second sub-frame..
11/06/14
20140328228

Method and device for transmitting/receiving transmission mode information on user terminal in inter-band tdd transmission scheme


The present invention relates to a method of receiving transmission mode information on a user terminal in an inter-band tdd transmission scheme. The present invention includes, at a base station controlling two or more bands with different time division duplex (tdd) settings, receiving a user terminal function information message that includes transmission mode function information on the user terminal in the two or more bands, and setting an element carrier aggregation environment of the user terminal to match the transmission mode function information, wherein the transmission mode function information includes information on whether the user terminal operates in a full duplex of half-duplex mode in the two or more bands..
11/06/14
20140328220

Carrier aggregation arrangements for mobile devices


Front end circuitry for a wireless communication system includes a first antenna node, a second antenna node, a first triplexer, a second triplexer, and front end switching circuitry coupled between the first triplexer, the second triplexer, the first antenna node, and the second antenna node. The front end switching circuitry is configured to selectively couple the first triplexer to one of the first antenna node and the second antenna node and couple the second triplexer to a different one of the first antenna node and the second antenna node.


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Carrier Aggregation topics: Carrier Aggregation, Base Station, Sounding Reference Signal, Relay Node, Scheduling, Channel Status, Carrier Frequency, Communication System, Automatic Repeat Request, Transmitter, Extension Carrier, Downlink Control Information, Radio Resource Control, Heterogeneous, Heterogeneous Network

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