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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


System and method for radio frequency carrier aggregation

Plusn

System and method for radio frequency carrier aggregation

Date/App# patent app List of recent Carrier Aggregation-related patents
05/28/15
20150146806
 System and  radio frequency carrier aggregation patent thumbnailnew patent System and radio frequency carrier aggregation
A system and method for aggregation of a plurality of wireless communication signals in a common radio frequency transmitter. A multiple subchannel multiplexed (msm) signal within a frequency band, and having a communication protocol with pilot signals estimating a channel state and efficient signal demodulation with a mobile receiver is combined with another signal.
Plusn, Llc
05/28/15
20150146805
 System and  radio frequency carrier aggregation patent thumbnailnew patent System and radio frequency carrier aggregation
A system and method for aggregation of a plurality of wireless communication signals in a common radio frequency transmitter. A multiple subchannel multiplexed (msm) signal within a frequency band, and having a communication protocol with pilot signals estimating a channel state and efficient signal demodulation with a mobile receiver is combined with another signal.
Plusn, Llc
05/28/15
20150146585
 Apparatuses and method using enhanced control channel information for tdd-fdd carrier aggregation patent thumbnailnew patent Apparatuses and method using enhanced control channel information for tdd-fdd carrier aggregation
Apparatuses and methods for carrier aggregation are generally described herein. An evolved nodeb (enb) may transmit downlink control information (dci) on a control channel portion for a primary cell (pcell) downlink (dl) subframe.
Intel Corporation
05/21/15
20150141068
 Power control patent thumbnailPower control
Measures for enabling per-carrier power control for inter-band multi-carrier capable devices, such as for example inter-band carrier aggregation capable devices. Such measures may for example comprise calculating a desired cumulative output power value for a combination of at least two uplink carriers of a terminal device, said two uplink carriers operating on different bands, setting an output power value for each of the at least two uplink carriers of the terminal device based on the calculated desired cumulative output power value, and providing, for the terminal device, a power control instruction for the at least two uplink carriers at the terminal device in accordance with the output power values set for the at least two uplink carriers..
Broadcom Corporation
05/21/15
20150139173
 Method for communicating with data through component carriers in mobile communication system to which carrier aggregation method is applied and apparatus therefor patent thumbnailMethod for communicating with data through component carriers in mobile communication system to which carrier aggregation method is applied and apparatus therefor
The present invention relates to a method for enabling a terminal to communicate with data by modifying an association relationship among component carriers in a mobile communication system supporting carrier aggregation and an apparatus therefor. The method in accordance with one embodiment of the present invention, comprises: receiving a message including identifier information for modifying an association relationship among at least one downlink component carrier and at least one uplink component carrier from a base station; receiving predetermined data through at least one downlink component carrier from the base station; and transmitting feedback data to the base station for data received through the uplink component carrier modified according to the identifier information..
Lg Electronics Inc.
05/21/15
20150139171
 Method and apparatus of activating/deactivating secondary carriers in mobile communication system using carrier aggregation patent thumbnailMethod and apparatus of activating/deactivating secondary carriers in mobile communication system using 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..
Samsung Electronics Co., Ltd.
05/21/15
20150139170
 Method and apparatus of activating/deactivating secondary carriers in mobile communication system using carrier aggregation patent thumbnailMethod and apparatus of activating/deactivating secondary carriers in mobile communication system using 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..
Samsung Electronics Co., Ltd.
05/21/15
20150139150
 Method for configuring phich carrier linkage patent thumbnailMethod for configuring phich carrier linkage
There is provided a method of configuring the downlink component carrier between one or more linkage methods for phich reception on user equipment (ue), which is configured for carrier aggregation, over a mobile communication network. This method includes (a) providing an indicator, and (b) determining whether the phich carrier linkage should be dynamic linkage or cell specific, based on the value of the indicator..
Nec Corporation
05/21/15
20150139142
 Random access in networks with carrier aggregation patent thumbnailRandom access in networks with carrier aggregation
A wireless device receives a control command initiating a random access process for a secondary cell. The wireless device transmits a random access preamble on random access resources of the secondary cell.
Ofinno Technologies, Llc
05/21/15
20150139114
 Device and antenna pictogram display method patent thumbnailDevice and antenna pictogram display method
There is disclosed user equipment including a communication unit for executing carrier aggregation and for executing communication through a plurality of carriers, and an antenna pictogram display unit for displaying, through an antenna pictogram, at least whether communication is allowed. When execution of the carrier aggregation is allowed, the antenna pictogram display unit displays an indication that the execution of the carrier aggregation is allowed together with at least one antenna pictogram..
Ntt Docomo, Inc.
05/14/15
20150134838

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..
05/14/15
20150134837

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..
05/14/15
20150133067

Systems and methods related to carrier aggregation front-end module applications


Improved switched multiplexer architecture for supporting carrier aggregation in front-end applications. In some embodiments, an n-plexing system can include an assembly of filters configured to provide n filtered paths, and a switching circuit in communication with the assembly of filters.
05/14/15
20150131635

Method and apparatus of configuring downlink timing and transmitting random access response in mobile communication system using carrier aggregation


A method of configuring downlink timings and transmitting a random access response message is provided for a random access procedure in a long term evolution (lte) system supporting carrier aggregation. The method for adjusting timing of a terminal in a wireless communication system supporting carrier aggregation of at least one carrier includes transmitting a random access preamble to a base station, and receiving a random access response with a timing advance command (tac) for commanding uplink timing adjustment from the base station, wherein the random access response comprises information indicating a timing advance group (tag) to which the tac is applied..
05/14/15
20150131602

Apparatus and defining physical channel transmit/receive timings and resource allocation in tdd communication system supporting carrier aggregation


A method of defining physical channel transmit/receiving timings and resource allocation is provided for use in a time division duplex (tdd) communication system supporting carrier aggregation. A method for receiving, at a base station, a hybrid automatic repeat request (harq) acknowledgement from a terminal in a time division duplex (tdd) system supporting carrier aggregation of a primary cell and at least one secondary cell includes transmitting a downlink physical channel through one of the primary and secondary cells, receiving the harq acknowledgement corresponding to the downlink physical channel of the primary cell at a first timing predetermined for the primary cell, and receiving the harq acknowledgement corresponding to the downlink physical channel of the secondary cell at second timing, wherein the second timing is determined according to the first timing..
05/14/15
20150131598

Method for transmitting and receiving signals using multi-band radio frequencies


A method for transmitting, by a base station, signals in a communication system. Control information for a subsidiary carrier band is transmitted to a mobile station via a primary carrier band.
05/14/15
20150131596

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..
05/14/15
20150131569

Uplink control information signaling in inter-site downlink carrier aggregation scenarios


There are provided measures for uplink control information signaling in inter-site downlink carrier aggregation scenarios. Such measures exemplarily include obtaining uplink transmission resources for an uplink control information transmission on said primary carrier, deriving a receiving timing for said uplink control information transmission, detecting said uplink control information transmission on said primary carrier based on said uplink transmission resources and said receiving timing, and decoding uplink control information from said uplink control information transmission..
05/14/15
20150131536

Method to enable wireless operation in license exempt spectrum


Described herein are methods to enable wireless cellular operation in unlicensed and lightly licensed, (collectively referred to as license exempt spectrum. Cognitive methods are used to enable use of unlicensed bands and/or secondary use of lightly licensed bands.
05/14/15
20150131494

Hybrid automatic repeat request-acknowledge (harq-ack) codebook generation for inter-band time division duplex (tdd) carrier aggregation (ca)


Technology to determine a hybrid automatic repeat request-acknowledge (harq-ack) codebook size for inter-band time division duplex (tdd) carrier aggregation (ca) is disclosed. In an example, a user equipment (ue) operable to determine a harq-ack codebook size for inter-band tdd ca can include computer circuitry configured to: determine a harq bundling window for inter-band tdd ca including a number of downlink (dl) subframes using harq-ack feedback; divide the harq bundling window into a first part and a second part; and calculate the harq-ack codebook size based on the first part and the second part.
05/07/15
20150126242

Method and configuring power headroom information in mobile communication system supporting carrier aggregation


A method and apparatus for configuring power headroom report (phr) of a user equipment (ue) efficiently in a mobile communication system supporting carrier aggregation are provided. The method includes generating a header including a lcid for identifying extended phr and l indicating a length of the extended phr, and inserting power headrooms (phs) of multiple activated carriers into the extended phr of one of the carriers..
Samsung Electronics Co., Ltd.
05/07/15
20150124789

Method and deactivating secondary carriers in mobile communication system using carrier aggregation


A method and an apparatus in a mobile communication system are provided. The method includes receiving, by the terminal, first information for activating a secondary cell (scell) from a base station, activating, by the terminal, the scell based on the first information, starting, by the terminal, a timer associated with the scell, restarting, by the terminal, if second information for the activated scell is received from the base station, the timer associated with the scell, and, if the timer expires, applying by the terminal, one or more corresponding actions for deactivating the scell no later than in a predefined subframe, wherein the second information includes at least one of an uplink grant on the activated scell, a downlink assignment on the activated scell, and a control message for activating the scell..
Samsung Electronics Co., Ltd.
05/07/15
20150124788

Method and deactivating secondary carriers in mobile communication system using carrier aggregation


A method and an apparatus in a mobile communication system are provided. The method by a terminal in the mobile communication system includes receiving, by the terminal, first information for activating a secondary cell (scell) from a base station, activating, by the terminal, the scell based on the first information, starting, by the terminal, a timer associated with the scell, restarting, by the terminal, if second information for the activated scell is received from the base station, the timer associated with the scell, and if the timer expires, applying by the terminal, one or more corresponding actions for deactivating the scell no later than in a predefined subframe.
Samsung Electronics Co., Ltd.
05/07/15
20150124771

Carrier aggregation in wireless communication systems


Provided is a data transmission system using a carrier aggregation. The data transmission system may assign a radio resource based on a correspondence relationship between a downlink and an uplink, and may transmit data using the assigned radio resource..
Electronics And Telecommunications Research Institute
05/07/15
20150124768

Method and deactivating secondary carriers in mobile communication system using carrier aggregation


A method and an apparatus in a mobile communication system are provided. The method by a terminal in the mobile communication system includes receiving, by the terminal, first information for activating a secondary cell (scell) from a base station, activating, by the terminal, the scell based on the first information, starting, by the terminal, a timer associated with the scell, restarting, by the terminal, if second information for the activated scell is received from the base station, the timer associated with the scell, and if the timer expires, applying by the terminal, one or more corresponding actions for deactivating the scell no later than in a predefined subframe.
Samsung Electronics Co., Ltd.
05/07/15
20150124767

Method and deactivating secondary carriers in mobile communication system using carrier aggregation


A method and an apparatus in a mobile communication system are provided. The method by a terminal in a mobile communication system includes receiving first information for activating a secondary cell (scell) from a base station, activating the scell based on the first information, starting a timer associated with the scell, restarting, if second information for the activated scell is received from the base station, the timer associated with the scell, and if the timer expires, applying by the terminal, one or more corresponding actions for deactivating the scell no later than in a predefined subframe.
Samsung Electronics Co., Ltd.
05/07/15
20150124766

Method and deactivating secondary carriers in mobile communication system using carrier aggregation


A method and an apparatus in a mobile communication system are provided. The method includes receiving, by a terminal, first information for activating a secondary cell (scell) from a base station, activating, by the terminal, the scell based on the first information, starting, by the terminal, a timer associated with the scell, restarting, by the terminal, if second information for the activated scell is received from the base station, the timer associated with the scell, and if the timer expires, applying by the terminal, one or more corresponding actions for deactivating the scell no later than in a predefined subframe.
Samsung Electronics Co., Ltd.
05/07/15
20150124743

Techniques for using carrier aggregation in dual connectivity wireless communications


Certain aspects of the present disclosure relate to procedures for aggregation in dual connectivity. In one aspect, a wireless device may receive configuration information to communicate with a first network entity (e.g., master enodeb) through a first primary cell (pcell) of a corresponding group of cells of the first network entity, and with a second network entity (e.g., secondary enodeb) through a second primary cell (pcellscg) of a corresponding group of cells of the second network entity.
Qualcomm Incorporated
05/07/15
20150124729

Method for receiving downlink control channel by means of terminal in wireless communication system and same


The present invention relates to a method for receiving a downlink control channel by means of a terminal in a wireless communication system and to an apparatus for same. More specifically, the present invention relates to a method for detecting downlink control information by means of a terminal in a wireless communication system that supports carrier aggregation, the method comprising: a step of receiving resource region information for an enhanced physical downlink control channel (epdcch) from a base station; a step of constructing at least one resource block as a search space for epdcch monitoring based on the resource region information; and a step of monitoring the search space to detect downlink control information.
Lg Electronics Inc.
05/07/15
20150124727

Ack/nak bit bundling in carrier aggregation scenarios


Techniques are disclosed for ack/nak bit bundling in carrier aggregation scenarios. Such measures exemplarily comprise generating a set of acknowledgement bits confirming receipt of payload data of a radio frame in a carrier aggregation mode aggregating a primary and at least one secondary carrier, said radio frame being divided into a plurality of downlink subframes and uplink subframes, each of said downlink subframes comprising at least one codeword per carrier, each of said acknowledgement bits is allocated to one of said codewords of one of said downlink subframes, and applying spatial domain bundling and/or time domain bundling on said set of acknowledgement bits distinctive for each of said primary and said at least one secondary carrier, wherein said spatial domain bundling is an and operation of all acknowledgement bits allocated to each codeword of one carrier of said primary and said at least one secondary carrier and one downlink subframe..
Nokia Solutions And Networks Oy
05/07/15
20150124676

Method and scheduling use of radio resources in a wireless network


The present disclosure describes techniques and apparatuses for scheduling use of radio resources in a wireless network. In some aspects a method is described that includes receiving an indication from a mobile device of an in-device coexistence problem, and determining, from the parameters in the received indication, one or more component carriers of the carrier aggregation affected by the in-device coexistence problem.
Marvell World Trade Ltd.
05/07/15
20150124665

Method and apparatus of controlling periodic csi reporting


Exemplary embodiments of the present invention relates to an apparatus and method for performing periodic csi reporting available in a system supporting a tdd-fdd aggregation operation and an fdd-tdd aggregation operation. A periodicity and an offset for periodic reporting of channel quality indicator and precoding matrix indicator may be determined based on the cell type of a primary serving cell for a tdd-fdd carrier aggregation and an fdd-tdd carrier aggregation..
Innovative Technology Lab Co., Ltd.
05/07/15
20150124638

Method for virtual carrier aggregation, base station, and user equipment


A method for virtual carrier aggregation, a base station, and a user equipment are provided. A base station receives measurement capability indication information and indication information indicating a capability of receiving data transmission that are reported by a ue.
Huawei Technologies Co., Ltd.
05/07/15
20150124598

Method and device for processing buffer state report in wireless communication system using inter-enb carrier aggregation technology


The present invention proposes a method of processing a buffer state report when a wireless communication system uses inter-enb carrier aggregation technology. According to the present invention, a terminal may be provided with a proper amount of uplink resource allocations by notifying base stations of a buffer state..
Samsung Electronics Co., Ltd.
04/30/15
20150117393

Method and heterogeneous carrier aggregation


Provided herein is a method and apparatus for heterogeneous carrier aggregation, the method including calculating interferences regarding a plurality of interference paths between an adjacent cell and serving cell; determining weighted values for the plurality of interference paths in the serving cell; calculating an accumulated value (accumulated margin or accumulated interference) regarding the plurality of interference paths based on the weighted values in the serving cell; determining a component carrier to be used in the carrier aggregation based on the accumulated value calculated in the serving cell; and performing the carrier aggregation based on the component carrier determined.. .
Electronics And Telecommunications Research Institute
04/30/15
20150117287

Method and transceiving data using plurality of carriers in mobile communication system


The present invention relates to a method and apparatus for performing a discontinuous reception (drx) operation while transceiving data using a plurality of carriers in a mobile communication system. The communication method for a terminal according to one embodiment of the present invention comprises receiving a control message, including setting information of a secondary serving cell (scell) to be added and discontinuous reception setting information, from a primary serving cell (pcell) and applying, if the control message includes an indicator indicating that the first base station to which the scell to be added belongs and the second base station to which the pcell belongs are different from each other, the drx setting information to the serving cell of a first base station.
Samsung Electrics Co., Ltd.
04/30/15
20150117272

Carrier aggregation feedback method, device and system for different tdd uplink/downlink configurations


Disclosed are a carrier aggregation feedback method, device and system relating to communication technologies. The number m of subframes requiring ack/nack feedback in a current uplink subframe is determined according to a tdd uplink/downlink configuration that corresponds to each carrier and is used for determining a timing relationship based on which a ue reports ack/nack feedback information of the carrier, and then ack/nack feedback information transmitted by a terminal device in the current uplink subframe and a candidate channel resource used for channel selection are determined according to the value of m, so as to transmit the ack/nack feedback information in the candidate channel resource by using pucch format 1b in combination with channel selection..
China Academy Of Telecommunications Technology
04/23/15
20150111510

Transmitter harmonic cancellation for carrier aggregation/multiband operation


A method and apparatus for cancelling, from signals received by a radio device in a first frequency band, interference generated by the radio device in the first frequency band when the radio device transmits simultaneously radio signals on at least a second frequency band.. .
Broadcom Corporation
04/23/15
20150110016

Method and transmitting control information through uplink


A technique according to the present specification relates to a method and apparatus for transmitting control information, which support carrier aggregation, through an uplink. Particularly, bits to be transmitted through a physical uplink control channel (pucch) are acquired, and at least one channel state information (csi) bit indicating a wireless channel state and a plurality of ack/nack bits related to a plurality of carriers are acquired and transmitted.
Lg Electronics Inc.
04/23/15
20150110010

Signaling method to configure multiple carriers used by wireless device and base station in carrier aggregation operation


The present disclosure proposes a dynamic resource allocation mechanism for a user equipment and a base station having multiple connections. According to one of the exemplary embodiment, the present disclosure proposes a user equipment (ue) which includes at least but not limited to a transmitter and a receiver for transmitting and receiving data respectively and a processing circuit coupled to the transmitter and the receiver and is configured for establishing a first connection with a first base station by using the transmitter and the receiver, establishing a second connection with a second base station by using the transmitter and the receiver, receiving through the receiver a dynamic time division duplexing (tdd) subframe configuration from either the first base station and the second base station, wherein the dynamic tdd subframe configuration is not received from a system information block (sib), and operating according to the dynamic tdd subframe configuration..
Acer Incorporated
04/23/15
20150109977

Front end configurations supporting inter-band carrier aggregation


A method and apparatus support carrier aggregation. The apparatus includes a first antenna configured to transmit or receive signals in both a first high frequency band and a first low frequency band and a second antenna configured to transmit or receive signals in both a second high frequency band and a second low frequency band.
Samsung Electronics Co., Ltd.
04/16/15
20150103774

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


The present invention is designed to feed back a plurality of pieces of csi with respect to each transmission point, when comp transmission is applied in the framework of carrier aggregation. The radio communication method according to the present invention is a radio communication method in a radio communication system including a plurality of radio base station apparatuses and a user terminal that is configured to be able to perform coordinated multi-point transmission/reception with the plurality of radio base station apparatuses, and, in this radio communication method, when coordinated multi-point transmission is applied, the radio base station apparatus, transmits csi set information on a set including at least one csi through higher layer signaling, and also transmits csi request information in dci, and the user terminal feeds back csi based on the csi set information and the csi request information..
Ntt Docomo, Inc.
04/16/15
20150103752

Harq memory space management for lte carrier aggregation


A user equipment (ue) receives and decodes a first erroneous transport block (tb) from a base station in a mobile communication network. The ue allocates a first soft buffer having a first buffer size.
Mediatek, Inc.
04/16/15
20150103705

Method for transmitting control information and same


A method for transmitting uplink control information by a user equipment in a wireless communication system supporting carrier aggregation of a plurality of cells and operating in a time division duplex (tdd). The method according to one embodiment includes receiving, by the user equipment, downlink signals on the plurality of cells, each of the downlink signals requiring a hybrid automatic repeat request acknowledgement (harq-ack) response; and transmitting, by the user equipment, the uplink control information including at least one per-cell harq-ack bit for each cell in an uplink subframe via a physical uplink shared channel (pusch).
Lg Electronics Inc.
04/09/15
20150099501

Method and device for transmitting and receiving data by using multiple carriers in mobile communication system


To solve the above-mentioned problem, the method for transmitting and receiving a signal by user equipment (ue) through one or more cells, according to one embodiment of the present specification, comprises the steps of: receiving, from a base station, a first message indicating whether one or more cells usable by the ue are enabled; determining which cells to enable or disable on the basis of the first message; and enabling or disabling the selected cells. According to the embodiment of the present specification, by aggregating carriers amongst different base stations, a possibility for the ue to transmit and receive high-speed data through carrier aggregation can increase..
Samsung Electronics Co., Ltd.
04/09/15
20150098532

Adaptive lna operation for shared lna receiver for carrier aggregation


A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus determines whether a timing offset between a pcc and an scc possibly exceeds a threshold.
Qualcomm Incorporated
04/09/15
20150098367

Method and apparatus of controlling for uplink scheduling and harq timing


The present invention relates to an apparatus and method for controlling an uplink (ul) scheduling and hybrid automatic repeat request (hard) timing supported in a tdd-fdd ca environment. According to aspects of the present invention, in a tdd-fdd carrier aggregation deployment environment, an efficient ul scheduling/harq operation may be performed for a ue in which a cross-carrier scheduling is configured..
Innovative Technology Lab Co., Ltd.
04/02/15
20150092733

Systems/methods of carrier aggregation


Various embodiments of carrier aggregation are provided that increase communications capacity and throughput. According to some embodiments, a receiver may be configured with a plurality of receiver chains and, responsive to an aggregate bandwidth of an overall signal that is to be received by the receiver, a plurality of components of the overall signal, each comprising a bandwidth that is less than a frequency span of the overall signal, are received by a respective plurality of receiver chains.
Eices Research, Inc.
04/02/15
20150092730

Communication active and non-active carriers using carrier aggregation and an apparatus therefore


A method for a base station to receive an uplink transmission from a user equipment. The method according to one embodiment includes transmitting, to the user equipment, radio resource control (rrc) configuration information for channel status report, the rrc configuration information including information for periodically receiving channel status report from the user equipment; transmitting, to the user equipment, layer 2 (l2) control information indicating states of the plurality of downlink component carriers, each of the plurality of downlink component carriers being indicated as one of an active state and a non-active state; and performing a procedure for periodically receiving channel status report for a corresponding downlink component carrier from the user equipment in use of the rrc configuration information.
Lg Electronics Inc.
04/02/15
20150092713

Component carrier activation/deactivation in multi-carrier systems


Methods and apparatus for addressing wireless transmit/receive unit (wtru) behavior in response to configuration, configuration parameters and access issues related to the activation/deactivation process when the wtru may be configured with multiple serving cells or carrier aggregation.. .
Interdigital Patent Holdings, Inc.
04/02/15
20150092709

Method and lte cell search using multiple receivers of a mobile device


A method using multiple receivers of a wireless communication device to accelerate cell selection and reselection is disclosed. Multiple receivers of the wireless device are used to implement carrier aggregation in lte connected mode.
Apple Inc.
04/02/15
20150092683

Dynamic secondary cell (scell) allocation and frequency planning for carrier aggregation


Certain aspects of the present disclosure provide methods and apparatus for dynamically secondary cell (scell) allocation and frequency planning for carrier aggregation. One example system for radio frequency (rf) signal processing, generally includes a first integrated circuit (ic) comprising two or more receive chains, each receive chain for processing one of multiple component carriers in a carrier aggregation (ca) signal, wherein the first ic is configured to downconvert a signal associated with a primary cell of the ca signal; and a second ic configured to downconvert one or more signals associated with one or more secondary cells of the ca signal.
Qualcomm Incorporated
04/02/15
20150092680

Flexible receiver architecture for multiple component carrier aggregation in down link


A technique to provide receiver processing of a plurality of component carrier signals that are received from one or more transmitting source by a terminal device, in which filtered component carrier signals are processed and aggregated in the terminal device. Two of the component carrier signals may be in a same frequency band grouping or two or more of the component carrier signals may be in a different band grouping.
Broadcom Corporation
04/02/15
20150092653

Methods and devices for carrier aggregation in a wireless communication system


The disclosure relates to a network node 21,, 2n; 31,, 3n of a communication system 1 for wireless communication. The network node 21,, 2n; 31,, 3n is configured to utilize a first bandwidth, b1, allocated in accordance with a first communication standard, wherein a first carrier and a second carrier are allocated within the first bandwidth b1.
Telefonaktiebolaget L M Ericsson (publ)
04/02/15
20150092633

Generation of harq-ack information and power control of harq-ack signals in tdd systems with downlink of carrier aggregation


Methods and apparatus are provided for a user equipment (ue) configured to have multiple cells in a downlink (dl) of a time division duplex (tdd) communication system so as to determine a power of an acknowledgement signal that the ue transmits in a control channel and to determine a number of acknowledgement information bits that the ue multiplexes with data information bits in a data channel. A transmission power of the control signal is determined based on dl assignment index (dai) information elements (ies) in dl scheduling assignments (sas) that the ue detects through multiple transmission time intervals and through the multiple configured dl cells.
Samsung Electronics Co., Ltd.
04/02/15
20150092632

Method and apparatus of uplink scheduling and harq timing


The present invention relates to an apparatus and method for controlling an uplink (ul) scheduling and hybrid automatic repeat request (harq) timing supported in a tdd-fdd ca environment. The method includes receiving, on a first serving cell, at least one of a first ul grant and a first physical harq indicator channel (phich) about a second serving cell through a cross-carrier scheduling, and receiving, on the second serving cell, at least one of a second ul grant and a second phich about the second serving cell through a self scheduling.
Innovative Technology Lab Co., Ltd.
03/26/15
20150087316

Statistics-assisted scell selection


Systems and methods for secondary cell (scell) selection for wireless devices operating according to a carrier aggregation scheme in a cellular communications network are disclosed. More specifically, in some embodiments, a statistics-assisted scell selection process is utilized for scell selection.
Telefonaktiebolaget L M Ericsson (publ)
03/26/15
20150087315

Carrier aggregation scell selection for lte-a


Systems and methods for secondary cell (scell) selection for wireless devices operating according to a carrier aggregation scheme in a cellular communications network are disclosed. In one embodiment, a network node obtains a list of potential scells for a wireless device.
Telefonaktiebolaget L M Ericsson (publ)
03/26/15
20150087296

Method and device for reporting power headroom in mobile communication system for carrier aggregation


Provided are a method and apparatus for reporting power headroom in a mobile communication system supporting carrier aggregation. A user equipment (ue) determines the maximum transmit power for each carrier and the maximum ue transmit power, and sends a power headroom report that contains power headroom for each carrier computed based on the maximum transmit power for the carrier and the maximum ue transmit power to a corresponding base station (enb)..
Samsung Electronics Co., Ltd.
03/26/15
20150087245

Receiver for carrier aggregation


A single hybrid receiver is provided for processing both single carrier and carrier aggregated (ca) communications signals where carriers are split into independent receive paths without any additional external components. The receiver receives all contiguous and non-contiguous intra-band ca and inter-band ca signals allowing for improved rejection and balanced rejection of jamming signals on either side of the two carrier signals..
Broadcom Corporation
03/26/15
20150085842

Method and deactivating secondary carriers in mobile communication system using carrier aggregation


A method and an apparatus for deactivating secondary carriers in a mobile communication system using carrier aggregation are provided. A communication method, for a user equipment (ue), includes activating a secondary carrier, starting a first timer upon activation of the secondary carrier, starting a second timer when the first timer expires, and deactivating the activated secondary carrier when the second timer expires..
Samsung Electronics Co., Ltd.
03/26/15
20150085812

Carrier indicator field usage and configuration in carrier aggregation


Format of a downlink control channel for a user equipment ue is changed in conjunction with switching the ue between being enabled for cross carrier scheduling and being disabled for cross carrier scheduling. The changed format is used on at least one serving cell of the ue's configured set of component carriers ccs.
Nokia Siemens Networks Oy
03/26/15
20150085808

Method and performing carrier management in carrier aggregation system


A carrier aggregation system, includes transmitting a first signaling to configure one additional carrier to a user equipment (ue) at which the additional carriers are deactivated, to configure a timer to each additional carrier for the ue by which the carrier is deactivated after the corresponding timer expiry; transmitting a second signaling that carries an activation indication to the ue to activate one deactivated additional carrier in the configured carriers for the ue; activating at least one deactivated additional carrier, starting the timer, controlling the ue to start physical downlink control channel (pdcch) monitoring and physical downlink shared channel (pdsch) receiving on the activated additional carrier; transmitting pdcch on the activated additional carrier for the ue, by which the corresponding timer being restarted; deactivating the activated carrier after the corresponding timer expiry, controlling the ue to stop the pdcch monitoring and the pdsch receiving on the deactivated additional carrier.. .
Fujitsu Limited
03/26/15
20150085797

Lte-u uplink waveform and variable multi-subframe scheduling


Uplink waveforms for operating long term evolution (lte) in an unlicensed band (i.e., long term evolution-unlicensed (lte-u) communication) are disclosed. carrier aggregation (ca) and standalone (sa) are disclosed.
Qualcomm Incorporated
03/26/15
20150085782

Method and making harqs in carrier aggregation systems


The present invention relates to a method and system for making a hybrid automatic repeat requests (harq) in a carrier aggregation system. The method receives downlink data through a first subframe of a first carrier, transmits acknowledgement/negative-acknowledgement (ack/nack) for the downlink data through a second subframe of a second carrier, and re-receives the downlink data through a third subframe of the first carrier, wherein the first carrier only includes the downlink subframes, and the second carrier includes the uplink subframes and the downlink subframes..
Lg Electronics Inc.
03/26/15
20150085720

Reduced delay harq process timeline for fdd-tdd carrier aggregation


Methods, systems, and devices for multi-carrier scheduling in wireless communications networks. The described techniques may be employed to minimize hybrid automatic repeat requests (harq) delay in a wireless communications network utilizing one or more tdd component carriers and one or more fdd component carriers.
Qualcomm Incorporated
03/26/15
20150085719

Systems and methods for subframe offset


A user equipment (ue) is described. The ue determines a duplex method of each serving cell for frequency-division duplexing (fdd) and time-division duplexing (tdd) carrier aggregation.
Sharp Laboratories Of America, Inc.
03/26/15
20150085718

Simplified fdd-tdd carrier aggregation


Methods, systems, and devices are described for multi-carrier communications involving one or more tdd component carriers and one or more fdd component carriers in a wireless communications network. Some described embodiments are directed to systems and methods for multi-carrier communications for a half-duplex device.
Qualcomm Incorporated
03/26/15
20150085713

Harq timelines for tdd-fdd carrier aggregation


Disclosed embodiments include an end-to-end ue and enb harq protocol design for various tdd−fdd joint operation wireless network configurations. Designs for timing of harq feedback in response to pdsch and pusch transmissions (or simply, pdsch and pusch) include both harq feedback from a ue, and harq feedback from an enb.
03/26/15
20150085711

Method and system for harq operation and scheduling in joint tdd and fdd carrier aggregation


A method at a user equipment for hybrid automatic repeat request (harq) operation, the user equipment operating on a primary carrier having a first duplex mode and on at least one secondary carrier having a second duplex mode, the method using harq timing of the first duplex mode if the timing of the first duplex mode promotes acknowledgement opportunities over using harq timing of the second duplex mode; and using harq timing of the second duplex mode if the timing of the second duplex mode promotes acknowledgement opportunities over using harq timing of the first duplex mode.. .
Blackberry Limited
03/26/15
20150085708

Carrier aggregation using multiple antennas


Rf front-end circuitry, which includes rf switching and duplexing circuitry, a first rf diplexer, and a second rf diplexer, is disclosed. The rf switching and duplexing circuitry operates in one of a group of rf transmit modes, such that the group of rf transmit modes includes at least one transmit uplink carrier aggregation mode.
Rf Micro Devices, Inc.


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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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