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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 making harqs in carrier aggregation systems

Lg Electronics

Method and apparatus for making harqs in carrier aggregation systems

Harq timelines for tdd-fdd carrier aggregation

Date/App# patent app List of recent Carrier Aggregation-related patents
03/26/15
20150087316
 Statistics-assisted scell selection patent thumbnailnew patent 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 patent thumbnailnew patent 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 patent thumbnailnew patent 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 patent thumbnailnew patent 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 patent thumbnailnew patent 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 patent thumbnailnew patent 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 patent thumbnailnew patent 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 patent thumbnailnew patent 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 patent thumbnailnew patent 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 patent thumbnailnew patent 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
new patent

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
new patent

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
new patent

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
new patent

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
new patent

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
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.


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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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