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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 interference based on carrier aggregation for small base station

Electronics And Telecommunications Research Institute

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

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

Nokia Solutions And Networks Oy

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

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

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

Date/App# patent app List of recent Carrier Aggregation-related patents
02/26/15
20150055729
 Systems/methods of carrier aggregation patent thumbnailSystems/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 patent thumbnailMethod 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 patent thumbnailDevices, 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 patent thumbnailDevices, 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 patent thumbnailMethod 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 patent thumbnailMethod 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 patent thumbnailWireless 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 patent thumbnailCarrier 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 patent thumbnailCommunication 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 patent thumbnailMethod 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
02/05/15
20150036648

Carrier aggregation processing


Embodiments of the present invention relate to the field of wireless communications technologies, and in particular, to a ca processing method and device, so as to provide a ca processing scheme applicable to a network sharing scenario. In the embodiments of the present invention, a second cell is determined according to a first plmn id used by a ca user equipment in a first cell and a frequency supported by the ca user equipment, where the first cell is a cell that the ca ue currently accesses, ca can be performed on a second plmn id supported by the second cell and the first plmn id used by the ca user equipment in the first cell, and a frequency used by the second cell can be supported by the ca user equipment; and, according to the determined second cell, a ca cell is configured for the ca user equipment..
Huawei Technologies Co., Ltd.
02/05/15
20150036637

Method and channel resource mapping in carrier aggregation


Methods and apparatus for preventing physical hybrid automatic repeat request (harq) indicator channel (phich) ambiguities or collisions, for example, in a multi-carrier system or when transmitting multiple streams over multiple antennas, are described. Methods may include dividing resources or groups among multiple component carriers (ccs), using and assigning unused or vacant resources to ccs, forcing usage of adaptive harq processes in specified scenarios, setting a value for the cyclic shift of the corresponding uplink demodulation reference signals (dmrs) to a previous value for semi-persistent scheduling, and assigning a different first resource block for semi-persistent scheduling uplink resources and random access response grants for multiple ccs..
Interdigital Patent Holdings, Inc.
02/05/15
20150036635

Method and activating or deactivating secondary carriers in time division duplex mobile communication system using carrier aggregation


A method and an apparatus for activating or deactivating a primary carrier and secondary carriers in a time division duplex long term evolution (tdd lte) system using carrier aggregation are provided. An apparatus includes an user equipment employing the method corresponding the operation associated with the activation and deactivation of scells, which thereby performs communication with enbs without errors..
Samsung Electronics Co., Ltd.
01/29/15
20150031410

Method and device for controlling uplink transmit power in wireless access system


The present invention discloses a method and device for controlling uplink transmit power of a terminal in a wireless access system that supports carrier aggregation/multiple cells. In particular, the method may include receiving a first ta value and a second ta value for a first timing advance group (tag) including one or more component carriers and a second tag including one or more component carriers, adjusting uplink transmission timing of the first tag and the second tag by using the first ta value and the second ta value, resetting a transient period between a first group of component carriers and a second group of component carriers exceeds a power control requirement, and controlling uplink transmit power according to the reset transient period..
Lg Electronics Inc.
01/29/15
20150030004

Selection of a radio cell sector


The present disclosure concerns radio communication. In one of its aspects, the technology presented herein concerns a method for selecting the most suitable secondary carrier for carrier aggregation when employing a combined radio cell including multiple radio sectors a—1, a—2, a—3 of a first cell (cell a) and multiple radio sectors b_x, b_y, b_z of a second cell (cell b)..
Telefonaktiebolaget L M Ericsson (publ)
01/29/15
20150029984

Allocating a control channel for carrier aggregation


Methods for allocating a physical downlink control channel (pdcch) to reduce a number of pdcch candidates in a search space for carrier aggregation on a user equipment (ue) are disclosed. The method comprises the step of selecting a control channel element (cce) aggregation level for a pdcch allocation for each of a plurality of user equipments (ues) at an evolved nodeb (enb).
01/29/15
20150029917

Apparatus and controlling multi-carrier supporting operation


Provided is an apparatus and method for not performing an inter-frequency measurement to reduce a current to be used by a terminal providing a multi carrier (mc) function or a carrier aggregation (ca) function. When the terminal satisfies predetermined conditions, the terminal may be operated in a single carrier mode in which the inter-frequency measurement is not performed and thus, a current to be used for the inter-frequency measurement may be reduced..
Pantech Co., Ltd.
01/22/15
20150023305

Uplink control information transmission on backward compatible pucch formats with carrier aggregation


A method for reporting uplink control information (uci) on a user equipment (ue) is described. A number of bits for a channel quality indicator and/or a precoding matrix index and/or a rank indication (cqi/pmi/ri) is obtained.
Sharp Kabushiki Kaisha
01/22/15
20150023286

Method and transmitting control information in a wireless communication


The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for transmitting acknowledgement/negative ack (ack/nack) in a wireless communication system which supports carrier aggregation, and to an apparatus for the method.
Lg Electronics Inc
01/22/15
20150023229

Systems and methods for carrier aggregation


A user equipment (ue) for performing carrier aggregation is described. The ue includes a processor and instructions stored in memory that is in electronic communication with the processor.
Sharp Laboratories Of America, Inc.
01/22/15
20150023228

Systems and methods for carrier aggregation


A user equipment (ue) for performing carrier aggregation is described. The ue includes a processor and instructions stored in memory that is in electronic communication with the processor.
Sharp Laboratories Of America, Inc.
01/22/15
20150023197

Common reference signal configuration for carrier aggregation


Eliminating or reducing transmission of common signals for enhanced spectral efficiency, improved support for heterogeneous networks, network energy saving possibilities, can be obtained by apparatuses and methods according to certain embodiments. A method for operating a user equipment can include receiving a measurement object from a network for detection of one or more predetermined type cells.
Nokia Corporation
01/22/15
20150023145

Method for transmitting and receiving signal on basis of dynamic change in wireless resource in wireless communication system to which carrier aggregation scheme is applied, and device therefore


A method for transmitting and receiving a signal by a terminal a wireless communication system is disclosed in the present invention. More particularly, the method comprises the steps of: receiving an indicator for changing the usage of a specific subframe corresponding to a sub-component carrier from a network; determining whether near-end crosstalk between the sub-component carrier and another component carrier occurs if the usage of the subframe is changed according to the indicator; and transmitting and receiving a signal to and from the network through the sub-component carrier according to the changed usage if it is determined that the near-end crosstalk does not occur..
Lg Electronics Inc.
01/15/15
20150018002

Lte operation in small cells using dynamic shared spectrum


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

Carrier aggregation optimization


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

Method for transreceiving signals and same


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

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


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

Method for transreceiving signal and same


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

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


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

Method for uplink power control, network node and system


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

Inter-site carrier aggregation


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

Handover performed in consideration of uplink/downlink component carrier setup


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

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


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

Extension carrier discovery for carrier aggregation


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

Uplink control signaling for joint fdd and tdd carrier aggregation


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

Multi-frequency range processing for rf front end


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

System and sharing a control channel for carrier aggregation


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

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


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

Multi-frequency range processing for rf front end


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

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


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

Method for transmitting control information and same


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

Carrier aggregation arrangement using triple antenna arrangement


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

Ue capability report method and apparatus in mobile communication system


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

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


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

Uplink signal sending method and user equipment


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

Performing multiple timing advance adjustments in a carrier aggregation communication system


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

Method and enabling re-establishment procedure in a heterogeneous network


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

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


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

Methods of ul tdm for inter-enodeb carrier aggregation


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

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


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

Multi-rat carrier aggregation for integrated wwan-wlan operation


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

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


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

Sounding mechanism under carrier aggregation


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

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


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

Lte/lte-a uplink carrier aggregation using unlicensed spectrum


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

Method and performing random access process in wireless communication system


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

Low cost and robust receiver architecture for down link carrier aggregation


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

Uplink power headroom management for connectivity with logically separate cells


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

Receiver front end for carrier aggregation


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

Systems/methods of adaptively varying a spectral content of communications


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

Methods and system for communicating control information using carrier aggregation


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

Signaling of uplink scheduling information in case of carrier aggregation


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

Method and device for allocating resources to carrier response information


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

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


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


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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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