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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


Front end configurations supporting inter-band carrier aggregation

Samsung Electronics

Front end configurations supporting inter-band carrier aggregation

Acer

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

Date/App# patent app List of recent Carrier Aggregation-related patents
04/23/15
20150111510
 Transmitter harmonic cancellation for carrier aggregation/multiband operation patent thumbnailnew patent 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 patent thumbnailnew patent 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 patent thumbnailnew patent 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 patent thumbnailnew patent 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 patent thumbnailRadio 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 patent thumbnailHarq 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 patent thumbnailMethod 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 patent thumbnailMethod 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 patent thumbnailAdaptive 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 patent thumbnailMethod 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.
03/19/15
20150079911

Method and activating carriers in mobile communication system


A method for measuring a signal of a deactivated cell by a terminal in a mobile communication system supporting carrier aggregation is provided. The method includes receiving measurement information including a measurement interval for the deactivated cell, from a base station, acquiring a measurement period using the measurement interval, measuring the signal of the deactivated cell, and generating a filtered measurement result based on the measurement period..
Samsung Electronics Co., Ltd.
03/19/15
20150078497

Receiver carrier aggregation frequency generation


Certain aspects of the present disclosure provide methods and apparatus for generating local oscillator (lo) signals for multiple receive chains. One example circuit for generating first and second signals generally includes a first voltage controlled oscillator (vco) configured to output the first signal at a first frequency and associated with a first receive chain for receiving a first carrier of an aggregated resource; and a second vco configured to output the second signal at a second frequency and associated with a second receive chain for receiving a second carrier of the aggregated resource.
Qualcomm Incorporated
03/19/15
20150078289

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


The present invention is designed to realize signaling of dm-rs sequence parameters for improving the flexibility of allocation of dm-rs resources in a system having complex cell structures. According to the radio communication method of the present invention, in a radio communication system supporting a system band formed with a plurality of component carriers by carrier aggregation, a radio base station apparatus allocates uplink dm-rs sequences per mobile terminal apparatus and per component carrier, and reports dm-rs sequence allocation information, and a mobile terminal apparatus generates dm-rs sequences using the allocation information reported from the radio base station apparatus..
Ntt Docomo, Inc.
03/19/15
20150078286

Method and transmitting and receiving data using plurality of carriers in mobile communication system


The present invention relates to a method and apparatus for transmitting and receiving data using a plurality of carriers in a mobile communication system. The communication method by a terminal according to one embodiment of the present invention includes the steps of: receiving a secondary cell (scell) adding command including setting information on an scell to be added from a primary serving cell (pcell); transmitting a preamble to the scell to be added; receiving a random access response message (rar) for the scell to be added; and, if the scell adding command includes an indicator indicating that a first base station to which the scell to be added belongs and a base station to which the pcell belongs are different from each other, applying parameters included in the rar to the scell that transmits the rar.
Samsung Electronics Co., Ltd.
03/19/15
20150078223

Method for transceiving signals, and apparatus therefor


The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for a terminal to perform a harq process in which a scheduling cell of a first ul-dl configuration and a p-scheduling cell of a second tdd ul-dl configuration are set in a wireless communication system that supports carrier aggregation (ca), as well as to an apparatus for the method.
Lg Electronics Inc.
03/12/15
20150071250

Data forwarding method, device, and communications system


Embodiments of the present invention provide a data forwarding method, device, and communications system, which relate to the field of communications and can achieve accuracy and continuity of data transmission during carrier aggregation for cells between base stations. The method includes: sending, by a primary base station, a first message to a secondary base station, where the first message is used to instruct the secondary base station to perform handover, and the first message includes an identifier of a target base station; confirming, by the primary base station, that the secondary base station forwards data to the target base station; and sending, by the primary base station, a second message to a user equipment, where the second message is used to instruct the user equipment to acquire the data from the target base station.
Huawei Technologies Co., Ltd.
03/12/15
20150071232

Method and device for signaling control information in carrier aggregation system


The present invention relates to a wireless communication system. More specially, the present invention relates to a method of maintaining uplink synchronization at a user equipment in a wireless communication system supporting carrier aggregation; configuring plural uplink component carriers, wherein each of the plural uplink component carriers has a respective uplink synchronization timing; receiving a downlink control information (dci) through a physical downlink control channel of a specific downlink component carrier, wherein the dci indicates an initiation of random access procedure and includes a carrier indicator field indicating one of the plurality of uplink component carriers; and transmitting a random access preamble through a uplink component carrier indicated by the carrier indicator field among the plural uplink component carriers..
Lg Electronics Inc.
03/12/15
20150071200

Communication system, base station apparatus and communication method


The present invention is designed to provide a communication system, a base station apparatus and a communication method that are suitable for carrier aggregation in a hetnet. In a communication system which provides a first transmission point (20a) and a plurality of second transmission points (20b), and which controls carriers such that a mobile terminal apparatus (10) communicates with the first transmission point using a first carrier (cc #1) and communicates with the second transmission points using a second carrier (cc #2), which is different from the first carrier, the base station apparatuses (20b) to constitute the second transmission points transmit cell-specific reference signals in the second carrier using the same frequency resources between the second transmission points, and the mobile terminal apparatus receives the reference signals transmitted by the second carrier from the second transmission points..
Ntt Docomo, Inc.
03/12/15
20150071198

Method of randomly accessing a secondary cell and receiving data


The existing technology focuses on the case of the same timing advance (ta) in carrier aggregation, not supporting randomly accessing a scell in the multi-ta carrier aggregation. The invention provides a method of randomly accessing a scell and receiving data.
Alcatel Lucent
03/12/15
20150071192

Carrier aggregation in communications


A legacy base station receives, from a radio network controller, information on the amount of radio network resources that is available to be reserved for user terminals utilizing lte-hspa carrier aggregation. The legacy base station also receives a request directly via an interface from an lte base station to perform a setup of a connection between the lte base station and a user terminal by utilizing lte-hspa carrier aggregation.
03/05/15
20150065152

Opportunistic carrier aggregation framework for efficient lte operation in unlicensed spectrum


Described herein are techniques for reducing efficient lte operation in the unlicensed band. For example, the technique may involve establishing a connection with a primary component carrier on the licensed communication band or the unlicensed communication band.
Qualcomm Incorporated
03/05/15
20150063263

Communication system for supporting carrier aggregation and updating system information thereof


A communication system for supporting carrier aggregation and a method and apparatus for updating system information thereof are disclosed. A method for providing system information in the communication system supporting carrier aggregation includes: when system information of said communication system changes, generating first information including information for indicating the change of system information; determining a first cell of a terminal related to the change of system information, wherein said first cell is one of cells to which said terminal connects, and corresponds to a carrier unit currently used by said terminal for keeping connection with a base station of said communication system; and transmitting said first information to said terminal through said first cell..
Sony Corporation
03/05/15
20150063259

Method and partial bandwidth carrier aggregation


Systems and methods which provide partial bandwidth support of secondary cells for carrier aggregation (referred to as partial bandwidth carrier aggregation) are disclosed. Partial bandwidth carrier aggregation according to embodiments implements wireless links using a plurality of cells with a user equipment (ue), as a means to improve the ue throughput, by using of a portion of the secondary cell bandwidth to accommodate bandwidth limitations of the ue and thereby facilitates the aggregation of component carriers (or portions thereof) when carrier aggregation would not otherwise be possible..
Qualcomm Incorporated
03/05/15
20150063203

Method of designing and communicating beam in communication system


A method of designing and communicating a beam in a communication system is provided. More particularly, a method of designing and communicating a beam in a communication system using carrier aggregation in order to increase a maximum data rate in a multiple beam mobile communication system is provided.
Electronics And Telecommunications Research Institute
03/05/15
20150063179

Method for transmitting control information and apparatus therefor


A method and a communication device are described for transmitting uplink control information in a wireless communication system supporting carrier aggregation. At least one of a plurality of physical downlink control channels (pdcchs) indicating downlink semi-persistent scheduling (sps) release or physical downlink shared channels (pdschs) is received in a plurality of downlink subframes according to an uplink (ul) downlink (dl) configuration for time division duplex (tdd).
Lg Electronics Inc.
02/26/15
20150055729

Systems/methods of carrier aggregation


Various embodiments of carrier aggregation are provided that increase communications capacity and throughput. According to some embodiments, a transmitter is configured with a plurality of transmitter chains and, responsive to an aggregate bandwidth and/or frequency content of an overall signal that is to be transmitted by the transmitter, the overall signal is segmented into a plurality of components, each one of which comprises a bandwidth that is smaller than the bandwidth of the overall signal, and is thus transmitted by the plurality of transmitter chains of the transmitter.
Eices Research, Inc.
02/26/15
20150055629

Method and controlling interference based on carrier aggregation for small base station


A carrier aggregation-based interference control method and apparatus for small base stations are disclosed. The present invention comprises setting a primary component carrier (pcc) as a first carrier and setting a secondary component carrier (scc) as a second carrier, monitoring a signal-to-interference plus noise ratio (sinr) of the first carrier or the second carrier, and determining whether the sinr of the first carrier is smaller than a predetermined threshold..
Electronics And Telecommunications Research Institute
02/26/15
20150055621

Devices, methods and computer program products for an improved handover in inter-site carrier aggregation scenarios


A handover process is proposed in a carrier aggregation scenario, in which there is encompassed a device communicating with a terminal in association with at least another device, using at least two carriers. At least a first carrier towards the terminal is established from the at least one another device and at least a second carrier is established towards the terminal from the device.
Nokia Solutions And Networks Oy
02/26/15
20150055620

Devices, methods and computer program products for an improved handover in inter-site carrier aggregation scenarios


A device, communicates with a terminal in association with at least a first other device, using at least two carriers, wherein at least a first carrier towards the terminal is established from the device and at least a second carrier is established towards the terminal from the first other device. The device receives a report indicative of a connection quality of the first carrier, responsive thereto issues a request for handover of the first carrier towards a second device, sends relocation information in relation to the first carrier towards the first other device, and only after sending that relocation information, commands the terminal to perform a handover of the first carrier to the second device.
02/26/15
20150055584

Method for dynamic allocation of radio resources in wireless communication system and device therefor


The present invention relates to a method for transmitting an uplink signal of a terminal using multiple component carriers in a wireless communication system and, more particularly, to a method for transmitting an uplink signal of a terminal using multiple component carriers in a wireless communication system which supports carrier aggregation, comprising the steps of: receiving setting information on a second-type component carrier from a base station through a first-type component carrier; and transmitting an uplink signal to the base station through the second-type component carrier, wherein the use of the second-type component carrier for a specific subframe is changed according to the setting information.. .
Lg Electronics Inc.
02/26/15
20150055488

Method and device for judging radio link failure in carrier aggregation technology


The present invention discloses a method and device for judging radio link failure (rlf) in carrier aggregation (ca) technology, which are used to effectively judge whether a radio link is failed or not in ca technology. Said method comprises: on an evaluation point, comparing the determined radio link quality parameter of each carrier participating in the rlf judgement with the corresponding radio link quality parameter threshold, determining whether to trigger an in-sync indication or out-of-sync indication on the evaluation point, and judging whether the radio link of the user equipment (ue) is failed according to the number of the continuously received in-sync indications or out-of-sync indications.
China Academy Of Telecommunications Technology
02/19/15
20150050932

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


A wireless communication system includes a first base station device, a second base station device, and a mobile station device configured to communicate with the first and second base station devices. The first base station device includes a request notifying unit configured to notify the mobile station device of a request for carrier aggregation.
Sharp Kabushiki Kaisha
02/19/15
20150049722

Carrier aggregation with power headroom report


Methods, apparatuses, and software can be used for providing power headroom reporting in a telecommunication system. A method can include configuring a user equipment to send a power headroom report control element in uplink, wherein the power headroom report control element includes a bitmap indicating which power headroom reports are being reported.
Cellular Communications Equipment Llc
02/19/15
20150049699

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


The present invention is designed to trigger a pusch dynamically or periodically in an s-cell upon carrier aggregation in a hetnet and transmit uci efficiently. In the communication system of the present invention, a mobile terminal apparatus reserves physical uplink shared channel resources in a second carrier by higher layer signaling, and transmits uplink control information combining ack/nack for a physical downlink shared data channel allocated by a downlink scheduling assignment and a cqi report triggered by the downlink scheduling assignment, to a second base station apparatus, using one of the reserved physical uplink shared channel resources..
Ntt Docomo, Inc.
02/19/15
20150049687

Method and communicating by using different types of carriers in radio communication system supporting carrier aggregation


Provided through the present application are a method and an apparatus for use in a radio communication system, which supports carrier aggregation and carries out communication in subframe units. More specifically, user equipment operating in a first type carrier for receiving from a base station, a first piece of control information, which is related to the first type carrier and a second type carrier that support the carrier aggregation, can measure a radio signal to carry out radio resource management with respect to the first type carrier by using a first reference signal, which is included in the first type carrier, and/or a second reference signal, which is included in the second type carrier..
Lg Electronics Inc.
02/19/15
20150049653

Method and system for handling ue behavior in inter-band carrier aggregation with cell specific tdd configuration


A method and system to handle behavior of a carrier aggregation capable user equipment (ue) that does not support simultaneous reception and transmission in overlapped downlink (dl)-uplink (ul) sub frames during inter-band carrier aggregation (ca) for cell specific tdd configuration is disclosed. The method specifies whether the ue is allowed or not allowed to monitor the pdcch sub frames during overlap of dl-ul sub frames by signaling the ue with a resultant tdd configuration that is applicable to component carriers of the pcell and one or more scells.
Samsung Electronics Co., Ltd.
02/12/15
20150045029

Method and apparatus providing data offloading and carrier aggregation associated measurement reporting


An exemplary method includes operating a user equipment in a macro cell and selectively, based on at least one criterion, at least one of measuring or not measuring a small cell located within the macro cell, and transmitting or not transmitting a measurement report for the small cell to a wireless network. The use of embodiments of this invention enables intelligent decisions to be made in a heterogeneous network (hetnet) at least with respect to the use of small cells for data offloading purposes.
Nokia Corporation
02/12/15
20150043517

Method, base station, and user equipment for feeding back ack/nack information for carrier aggregation


The present invention provides a method, a base station, and a user equipment for feeding back ack/nack information for carrier aggregation. The method includes: configuring a common field preset in dci as at least one type of command field related to ack/nack feedback of at least two types of command fields related to ack/nack feedback, where the common field can be configured as the command fields related to ack/nack feedback; and sending the dci to a user equipment, so that the user equipment feeds back ack/nack information according to the dci.
Huawei Technologies Co., Ltd.
02/12/15
20150043508

Harq process number management for downlink carrier aggregation


A method for designating, by a user agent supporting multiple carriers in a wireless communication network, one assigned carrier as an anchor carrier, at least one assigned carrier as an inactive carrier, and at least one assigned carrier as an active carrier. The method can also include receiving a command from an enhanced node b causing a first carrier to transition from an inactive carrier to an active carrier.
Blackberry Limited
02/12/15
20150043495

Reception device and reception method


Disclosed are a transmission device and a transmission method with which it is possible to prevent delays in data transmission and to minimize the increase in the number of bits necessary for the notification of a cc to be used, in cases where a cc to be used is added during communication employing carrier aggregation. When a component carrier is to be added to a component carrier set, a setting section provided in a base station: modifies a cif table that defines the correspondence between code points, which are used as labels for the respective component carriers contained in the component carrier set, and the identification information of the respective component carriers; and assigns a vacant code point to the component carrier to be added, while keeping the correspondence between the code points and the component carrier identification information defined in the cif table before modification..
Panasonic Intellectual Property Corporation Of America
02/12/15
20150043471

Method and activating frequencies in white space


A method for acquiring spectrum beyond the licensed spectrum for wireless network communications comprising accessing a geolocation database to determine a configuration of white space frequencies that may be available and transmitting the carrier aggregation configuration to user equipment (ue). The carrier aggregation configuration may be at least partially encrypted with the key sequences for the encryption being optionally changed for improved security.
Nokia Corporation
02/12/15
20150043433

Allocating feedback resources for carrier aggregation


Methods and apparatus are disclosed for allocating pucch resources for harq feedback so as to minimize the total number pucch resources that are allocated while avoiding resource collision. A base station in an uplink pcell allocates resource sets for use by a plurality of user terminals for providing harq feedback to support downlink transmissions to the user terminals in the same transmission time interval.
Telefonaktiebolaget L M Ericsson
02/12/15
20150043401

Mobile communication system and channel transmission/reception method thereof


A method for transmitting a physical channel in a time division duplex (tdd) communication system capable of carrier aggregation is provided for supporting aggregation of carriers having different tdd configurations. The communication method of a terminal in a tdd radio communication system accomplishing broadband through carrier aggregation of primary and secondary cells, of which aggregated carriers have different tdd uplink-downlink (ul-dl) configurations, includes receiving physical downlink shared channel (pdsch) through the secondary cell, and transmitting acknowledgement information corresponding to the pdsch to a base station, where acknowledgement information is transmitted on a physical uplink control channel (pucch) of the primary cell..
Samsung Electronics Co., Ltd.
02/12/15
20150043400

Mobile communication system and channel transmission/reception method thereof


A method for transmitting a physical channel in a time division duplex (tdd) communication system capable of carrier aggregation is provided for supporting aggregation of carriers having different tdd configurations. The communication method of a terminal in a tdd radio communication system accomplishing broadband through carrier aggregation of primary and secondary cells, of which aggregated carriers have different tdd uplink-downlink (ul-dl) configurations, includes receiving physical downlink shared channel (pdsch) through the secondary cell, and transmitting acknowledgement information corresponding to the pdsch to a base station, where acknowledgement information is transmitted on a physical uplink control channel (pucch) of the primary cell..
Samsung Electronics Co., Ltd.
02/12/15
20150043394

Downlink control signalling transmission


The invention relates to the field of communications and provides a method of and apparatus for transmitting downlink control information, and the method includes: for transmission of dci over any carrier, determining dai information fields in uplink scheduling dci and downlink scheduling dci to be carried over the carrier and an harq process number information field in the downlink scheduling dci dependent upon pdsch harq feedback scheme currently in use; and determining a ul index information field in the uplink scheduling dci to be carried over the carrier dependent upon a pusch scheduling scheme currently in use, so that an appropriate dci design scheme is provided for an application scenario of across-system carrier aggregation to thereby satisfy a demand for the use of an evolved process in an lte system and improve effectively the performance of the system.. .
China Academy Of Telecommunications Technology


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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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