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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


Method and apparatus for controlling soft buffer for tdd-fdd carrier aggregation

Innovative Technology Lab

Method and apparatus for controlling soft buffer for tdd-fdd carrier aggregation

Mechanism for radio link monitoring and radio link  failure handling in small cell networks

Mediatek

Mechanism for radio link monitoring and radio link failure handling in small cell networks

Mechanism for radio link monitoring and radio link  failure handling in small cell networks

Alcatel Lucent

Method of implementing automatically retransmission feedback in a ue in a carrier aggregation network

Date/App# patent app List of recent Carrier Aggregation-related patents
06/25/15
20150181638
 Radio link control duplication for carrier aggregation patent thumbnailnew patent Radio link control duplication for carrier aggregation
This disclosure relates to carrier aggregation using separate rlc entities for different component carriers. According to one embodiment, a base station and a wireless device may establish a primary component carrier and at least one secondary component carrier according to a first radio access technology.
Apple Inc.
06/25/15
20150181604
 Component carrier (de)activation in communication systems using carrier aggregation patent thumbnailnew patent Component carrier (de)activation in communication systems using carrier aggregation
This invention relates to the proposal of component carrier (de)activation message that is allowing a activation or deactivation of one or more component carriers in the uplink or downlink. Furthermore, the invention relates to the use of the new component carrier (de)activation message in methods for (de)activation of downlink component carrier(s) configured for a mobile terminal, a base station and a mobile terminal.
Panasonic Intellectual Property Corporation Of America
06/25/15
20150181590
 Method and  controlling soft buffer for tdd-fdd carrier aggregation patent thumbnailnew patent Method and controlling soft buffer for tdd-fdd carrier aggregation
Provided is a method and apparatus for controlling soft buffer for tdd-fdd carrier aggregation. The method includes: establishing a radio resource control (rrc) connection with a base station through a first serving cell, the first serving cell supporting a time division duplex (tdd) mode; receiving an rrc message from the base station through the first serving cell, the rrc message comprising carrier aggregation (ca) configuration information, the ca configuration information comprising information of a second serving cell supporting a frequency division duplex (fdd) mode; determining a maximum number of dl harq processes for the second serving cell, the maximum number of dl harq processes for the second serving cell being differently determined according to a dl reference timing; and storing soft channel bits for a received transport block (tb) based on the determined maximum number of dl harq processes for the second serving cell..
Innovative Technology Lab Co., Ltd.
06/25/15
20150181578
 Transmission  downlink signal in wireless communication system and transmission apparatus therefor patent thumbnailnew patent Transmission downlink signal in wireless communication system and transmission apparatus therefor
A method is described for receiving a physical signal by a communication apparatus in a wireless communication system supporting carrier aggregation of a first component carrier and a second component carrier. The communication apparatus receives a physical downlink control channel (pdcch) signal on the first component carrier.
Lg Electronics Inc.
06/25/15
20150181479
 Mechanism for radio link monitoring and radio link  failure handling in small cell networks patent thumbnailnew patent Mechanism for radio link monitoring and radio link failure handling in small cell networks
A method of radio link monitoring (rlm) and radio link failure (rlf) handling over a small cell network is proposed. In a wireless network, a user equipment (ue) establishes a radio resource control (rrc) connection with a base station (enb), which is ue anchor.
Mediatek Inc.
06/25/15
20150180694
 Radio frequency circuit for intra-band and inter-band carrier aggregation patent thumbnailnew patent Radio frequency circuit for intra-band and inter-band carrier aggregation
A radio frequency (rf) circuit for intra-band and inter-band carrier aggregation includes a receive path configured to receive an input signal. The rf circuit includes a low noise amplifier which has multiple separate input stages and multiple separate output stages.
Nvidia Corporation
06/25/15
20150180617
 Method of implementing automatically retransmission feedback in a ue in a carrier aggregation network patent thumbnailnew patent Method of implementing automatically retransmission feedback in a ue in a carrier aggregation network
The invention proposes a method of implementing hybrid automatically retransmission feedback in a ue in a carrier aggregation network, wherein, the network comprises a self-scheduling primary cell and a secondary cell, and the method comprises: determining a reference frame configuration based on the frame configuration of the primary cell and the frame configuration of the secondary cell, wherein, the reference frame configuration is the type 5; determining a first quantity of downlink subframes of the secondary cell needing to be fed back in uplink subframes, according to the frame configuration of the secondary cell and downlink subframes, associated with uplink subframes, corresponding to the reference frame configuration; receiving from a base station a parameter about the number of downlink subframes fed back, and calculating a second quantity of downlink subframes needing to be fed back in the uplink subframes, based on the parameter; determining an actual quantity of downlink subframes actually fed back, based on the first quantity and the second quantity; implementing automatically retransmission feedback for downlink frames of the actual quantity in the physical shared channel, adjusted by uplink grants, in the uplink subframes.. .
Alcatel Lucent
06/18/15
20150173094
 System and  providing priority data of band combinations for carrier aggregation patent thumbnailSystem and providing priority data of band combinations for carrier aggregation
A system, devices and methods for providing input from a user equipment (ue) for the selection of a carrier channel combination for use in carrier aggregation. The exemplary system includes a ue configured to perform carrier aggregation, the ue storing a radio frequency (rf) calibration table including a plurality of transmission related requirements specific to the ue, the ue configured to generate priority data for each carrier channel combination supported for use in carrier aggregation based upon the rf calibration table and a network component receiving the priority data and an indication from the ue, the network component configured to select a carrier channel combination for use in carrier aggregation based upon the priority data, the network component transmitting carrier aggregation configuration data including the selected carrier channel combination to the ue..
Apple Inc.
06/18/15
20150173016
 Enhanced node b, user equipment and methods for discontinuous reception in inter-enb carrier aggregation patent thumbnailEnhanced node b, user equipment and methods for discontinuous reception in inter-enb carrier aggregation
Embodiments of user equipment (ue) and methods for enhanced discontinuous reception (drx) operations for inter enb carrier aggregation (ca) in an lte network are generally described herein. In some embodiments, a ue is configured to be served by multiple serving cells.
06/18/15
20150173009
 Systems and methods for intelligent frequency selection in carrier aggregation enabled networks patent thumbnailSystems and methods for intelligent frequency selection in carrier aggregation enabled networks
Systems and methods that enhance radio link performance in a multi-carrier environment. A method may be performed by a ue that includes scanning a plurality of carrier components for a primary cell, determining a first bandwidth of the primary cell, scanning for a secondary cell, determining a second bandwidth of the secondary cell, determining a maximum aggregated bandwidth by combining the first bandwidth and the second bandwidth and when the maximum aggregated bandwidth exceeds a bandwidth capability of the ue, performing a cell selection procedure to select one of the primary cell or the secondary cell based on a higher of the first bandwidth and the second bandwidth..
Apple Inc.
06/18/15
20150172987

Systems and methods for carrier channel selection in carrier aggregation enabled networks


A user equipment (ue) configured to connect to a network and operate in a carrier aggregation mode and a single carrier mode performs methods to select optimal component carriers. The methods include determining that a primary component carrier is operating less optimally than a secondary component carrier, sending an indication to the network that the primary component carrier is operating less optimally than the secondary component carrier, acquiring the secondary component carrier as a target primary component carrier and operating with the secondary component carrier as the target primary carrier component.
Apple Inc.
06/18/15
20150172974

Home base station and supporting plurality of cells under carrier aggregation


A home base station and method for supporting a plurality of cells under carrier aggregation. The home base station includes a preamble generator and a preamble monitor.
Industrial Technology Research Institute
06/18/15
20150172039

Method and defining transceiving timing of a physical channel in a tdd communication system which supports cross-carrier scheduling


A method, base station, and terminal employing time division duplex and carrier aggregation are disclosed. The method by the base station includes transmitting, to a terminal, scheduling information on a control channel of a first cell, and transmitting, to the terminal, data on a shared channel of a second cell based on the scheduling information.
Samsung Electronics Co., Ltd.
06/18/15
20150172032

System and user equipment initiated management of carrier aggregation


Methods that are performed by a user equipment (ue) and corresponding methods of base stations that allow a ue to determine whether the ue is in a carrier aggregation enabled or disabled state. One exemplary embodiment of a method performed by a ue determines a first artificial value for a first parameter and a second artificial value for a power headroom (phr) for a secondary component carrier (scc), the first and second artificial values being substantially low relative to a configuration of the network, generates an artificial report including the first and second artificial values, transmits the artificial report to a primary cell providing a primary component carrier (pcc) and receives an indication that the ue is placed in a carrier aggregation disabled state..
Apple Inc.
06/11/15
20150163793

Method and transmitting control information in a wireless communication system


The present invention relates to a wireless communication system. The present invention relates to a method for transmitting ack/nack in a wireless communication system in which carrier aggregation is set, and an apparatus therefor.
Lg Electronics Inc.
06/11/15
20150163750

Method and controlling uplink power of user equipment in carrier aggregation scenario


The present invention provides a method and an apparatus for controlling uplink power of a user equipment, where the method includes: separately acquiring first maximum transmit power of the user equipment corresponding to a first subframe and second maximum transmit power of the user equipment corresponding to a second subframe; and when the first maximum transmit power and the second maximum transmit power are different, using a minimum value of the first maximum transmit power and the second maximum transmit power as first configured maximum transmit power, and performing power control over transmit power of multiple carriers in an overlap region according to the first configured maximum transmit power, so that total transmit power of the multiple carriers in the overlap region after the power control is lower than or equal to the minimum value of the first maximum transmit power and the second maximum transmit power.. .
Huawei Technologies Co., Ltd.
06/11/15
20150163728

Wireless communication system, wireless communication method, mobile station device, and base station device


A wireless communication system includes a plurality of base station devices, and a mobile station device configured to communicate with the plurality of base station devices. The mobile station device includes: a necessity determining unit configured to refer to a communication state of a first base station device that is a base station device in communication with the mobile station device, and determine necessity of carrier aggregation; a cell search unit configured to, in a case that the necessity determining unit determines that carrier aggregation is necessary, search a communication available base station device from the plurality of base station devices; and a carrier aggregation requesting unit configured to, in a case that at least one communication available base station device is detected by the search, transmit a request for carrier aggregation to the first base station device, thus providing a wireless communication system that can obtain an excellent speed..
Sharp Kabushiki Kaisha
06/11/15
20150163041

Restrictions on transmissions of control plane data with carrier aggregation


The disclosure describes apparatus and methods for communicating control plane data with a mobile device in a long term evolution (lte) network employing carrier aggregation. A network apparatus, such as an enhanced nodeb (enodeb) or a mobility management entity (mme), can be configured to evaluate a measurement report (mr) received from a mobile device for one or more radio frequency (rf) conditions associated with a primary network cell and one or more rf conditions associated with a secondary network cell.
Apple Inc.
06/11/15
20150163038

Communication method using a carrier aggregation and apparatus therefore


A method for a base station to receive an uplink transmission from a user equipment configured with multiple uplink component carriers in a wireless communications system. The method according to one embodiment includes transmitting, to the user equipment, radio resource control (rrc) configuration information for a sounding reference signal (srs), the rrc configuration information including information for periodically receiving the srs from the user equipment; transmitting, to the user equipment, layer 2 (l2) control information indicating states of the plurality of uplink component carriers; and performing a procedure for periodically receiving the srs from the user equipment on a corresponding uplink component carrier in use of the rrc configuration information.
Lg Electronics Inc.
06/04/15
20150156774

Interworking base station between a wireless network and a cellular network


This invention concerns an interworking base station (bs) between a wireless network and a cellular network. The base station (bs) is adapted to support carrier aggregation and is adapted to employ : ▪ a primary carrier (pc) using cellular access technology providing communication between a user terminal (ue) and said base station, said primary carrier (pc) being used to assure a robust communication link; ▪ at least one secondary carrier (sc) using a wireless access technology providing communication between said user terminal (ue) and said base station (bs), said at least one secondary carrier (sc) being used to assure a high rate wireless connexion; ▪ a control mechanism (mac mux) to direct the delivery of high-speed data services over the primary carrier (pc) using a cellular access technology, the secondary carrier (sc) using wireless access technology or the combination of the cellular and wireless access technologies..
Alcatel Lucent
06/04/15
20150156773

Control of carrier aggregation


A method and an apparatus are described by which carrier aggregation in a radio network is controlled on the basis of a group of cells which can be aggregated. For example, carrier aggregation group information regarding the group of cells which can be aggregated can be established, transmitted, read and the like, access control policy regarding the group of cells in the radio network which can be aggregated can be set.
06/04/15
20150156770

Data and control multiplexing for uplink mimo with carrier aggregation and clustered-dft


A method and apparatus for signal processing in a wireless transmit receive unit (wtru), including generating a plurality of data bits and a plurality of control bits, mapping the data bits and control bits to one or more codewords, multiplexing the data bits and control bits, dividing the bits into layers, allocating control bits to each layer based on a channel quality of each codeword and a channel quality of each layer, and channel interleaving each layer for output to one or more antennas.. .
Interdigital Patent Holdings, Inc.
06/04/15
20150156764

Method for signaling control information, and apparatus therefor


The present invention relates to a wireless communication system. In detail, the invention relates to a method for a terminal to transmit a uci in a carrier aggregation-based wireless communication system, and to an apparatus therefor, wherein the method involves the steps of: forming a first cell group having a pcell; forming a second cell group having one or more scells; receiving one or more data in the second cell group; and transmitting harq-ack information on the one or more data through a pucch, wherein, when the first and second cell groups are managed by an identical base station, the harq-ack information is transmitted in the pcell, and, when the first and second cell groups are managed by different base stations, the harq-ack information is transmitted in the second cell group..
Lg Electronics Inc.
06/04/15
20150156695

Systems and methods for cross-cell carrier aggregation for coverage balance improvement


A system and methods that are performed by a macro cell and a user equipment (ue) to implement a carrier aggregation mode in a network. The system includes a macrocell including a first coverage area and a plurality of small cells, each of the small cells including a second coverage area wherein the plurality of second coverage areas substantially cover the first coverage area.
Apple Inc.
06/04/15
20150156693

Device to device communications with carrier aggregation


Device-to-device (d2d) communications in conjunction with carrier aggregation. A base station (bs) may coordinate d2d communication between two wireless user equipment (ue) devices.
Apple Inc.
06/04/15
20150156636

Carrier aggregation using unlicensed frequency bands


carrier aggregation using unlicensed frequency bands. A primary carrier for communication between a base station (bs) and a wireless user equipment (ue) device may be configured according to a first wireless communication technology.
Apple Inc.
06/04/15
20150156635

Systems and methods for carrier aggregation deployment and organization in unlicensed bands


Described herein are systems and methods for carrier aggregation deployment and organization in unlicensed bands. A method may comprise scanning, by a transceiver within a base station, channels in a band of interest, reporting, by the transceiver, signal measurement information to the base station, cell searching, by the transceiver, channels in the band of interest, determining channel information for neighboring each channel, and transmitting, by the transceiver, the channel information to the base station..
Apple Inc.
05/28/15
20150146806

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


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


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


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


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


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


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


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


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


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.


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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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