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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 performing handover of carrier aggregation mobile station

Samsung Electronics

Method and apparatus for performing handover of carrier aggregation mobile station

Communication system

Mitsubishi Electric

Communication system

Communication system

Sprint Spectrum L.p.

Enhanced scheduling of resources based on use of carrier aggregation


Date/App# patent app List of recent Carrier Aggregation-related patents
08/20/15
20150237553 
 Method, equipment and system for handing over cell in communication system supporting carrier aggregation patent thumbnailMethod, equipment and system for handing over cell in communication system supporting carrier aggregation
A method, an equipment and a system for handing over a cell in a communication system supporting carrier aggregation. The method includes: when a terminal in the communication system moves to the edge of the currently serving cell, the terminal selects one or more neighbor cells from one or more neighbor cells as measurement objects according to the carrier aggregation manner of the one or more neighbor cells; the terminal measures the capabilities of the measurement objects, and obtains one or more measurement results; and the terminal sends a source base station which currently serving the terminal one or more measurement results as capability measurement reports of the one or more neighbor cells.
Sony Corporation


08/20/15
20150237541 
 Method and  performing handover of carrier aggregation mobile station patent thumbnailMethod and performing handover of carrier aggregation mobile station
A method of a base station (bs) of a carrier aggregation (ca) is provided. The method includes determining whether a mobile station (ms) concurrently uses a first cell associated with a first carrier frequency and a second cell associated with a second carrier frequency, and controlling a handover of the ms using a measurement configuration set corresponding to a result of the determination among a plurality of measurement configuration sets that are set for each of handover related events..
Samsung Electronics Co., Ltd.


08/20/15
20150237514 
 Communication system patent thumbnailCommunication system
The present invention has an object to provide a communication system capable of appropriately providing services while improving a data rate using carrier aggregation. In step st1408, of a cell1 and a cell2 of a base station a, rrc connection is established between the cell1 and a ue, and the cell1 becomes a primary cell (pcell).
Mitsubishi Electric Corporation


08/20/15
20150236839 
 Enhanced scheduling of resources based on use of carrier aggregation patent thumbnailEnhanced scheduling of resources based on use of carrier aggregation
Disclosed is a method and corresponding apparatus for enhanced scheduling of resources based on use of carrier aggregation. The method involves determining that (i) an individual ue is being served with carrier aggregation or with greater than a threshold amount of frequency and (ii) a processor load of the base station is greater than a threshold load.
Sprint Spectrum L.p.


08/20/15
20150236837 
 Method for transmitting ack/nack signal in wireless communication system applied carrier aggregation and apparatus therefor patent thumbnailMethod 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 to a base station (bs) at a user equipment (ue) in a wireless communication system. The method according to one embodiment includes receiving two or more transmission blocks through two or more downlink component carriers from the bs; and transmitting information on a number of ack responses among ack/nack responses corresponding to each of the two or more transmission blocks through a single uplink component carrier to the bs..
Lg Electronics Inc.


08/20/15
20150236834 
 Method for making a terminal send an uplink ack/nack signal in a wireless communication system using carrier aggregation techniques and  the same patent thumbnailMethod for making a terminal send an uplink ack/nack signal in a wireless communication system using carrier aggregation techniques and the same
The present application discloses a method for making a terminal send an uplink ack (acknowledgement)/nack (negative ack) signal in a wireless communications system. Specifically, the method includes the steps of: receiving at least one downlink data signal from a network through at least one of a first and second cells; generating an ack/nack signal corresponding to the at least one downlink data signal; and sending the ack/nack signal through one of the first and the second cells, wherein the structure of the ack/nack signal is determined based on the number of the downlink data signals, and if the number of the downlink data signals is plural, the structure of the ack/nack signal is first type, and if receiving one downlink data signal through the first cell only or the second cell only, the structure of the ack/nack signal is second type..
Lg Electronics Inc.


08/20/15
20150236825 
 Method and  measuring channel in wireless communication system patent thumbnailMethod and measuring channel in wireless communication system
A method and apparatus for performing channel measurement in a wireless communication system are disclosed. A method for performing channel measurement by a user equipment (ue) in a wireless communication system supporting carrier aggregation (ca) and coordinated multi-point transmission and reception (comp) includes: receiving information on a channel state information—reference signal (csi-rs) resource set (hereinafter referred to as crms (comp resource management set)) for measuring csi-rs—based received power from serving evolved nodeb (enb); measuring a received power for the csi-rs resources contained in the crms; and transmitting the measured received power to the serving enb, wherein the crms is independently configured for each of the plurality of component carriers (ccs) capable of being aggregated in the carrier aggregation (ca)..
Lg Electronics Inc.


08/20/15
20150236824 
 Uplink downlink assignment indicator ambiguity handling for inter-band time division duplex carrier aggregation patent thumbnailUplink downlink assignment indicator ambiguity handling for inter-band time division duplex carrier aggregation
Various communication systems may benefit from techniques for handling inter-band carrier aggregation. For example, systems of the third generation partnership project (3 gpp) long term evolution (lte) advanced (lte-a) may benefit from an uplink (ul) downlink assignment indicator (dai) ambiguity handling or inter-band time division duplex (tdd) carrier aggregation (ca).
Nokia Corporation


08/13/15
20150230268 
 Handling fdd and tdd timing offset in fdd and tdd ca in lte patent thumbnailHandling fdd and tdd timing offset in fdd and tdd ca in lte
Aspects of the present disclosure relate to techniques for determining timing of uplink transmissions for ues communicating with carrier aggregation involving both frequency division duplexing (fdd) and time division duplexing (tdd) component carriers (ccs). A timing advance (ta) offset value for a user equipment (ue) to use for uplink transmissions is determined based, at least in part, on which of the ccs carries a physical uplink control channel (pucch)..
Qualcomm Incorporated


08/13/15
20150230253 
 Method and  activating or deactivating secondary carriers in time division duplex mobile communication system using carrier aggregation patent thumbnailMethod 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.


08/13/15
20150230248 

Method and processing scheduling information in mobile communication system


A method and an apparatus for processing scheduling information in a terminal into which a plurality of forward carriers and reverse carriers are aggregated are provided. The method includes receiving a control message from a base station, the control message including information on a reverse carrier added by the carrier aggregation, and determining a new buffer state table to be used for reporting the state of buffers to the base station, based on the information included in the control message..
Samsung Electronics Co., Ltd.


08/13/15
20150230246 

Method and allocating resources in carrier aggregation system


A method and apparatus for allocating resources in a base station (bs) in a carrier aggregation (ca) system is provided. The method and apparatus includes configuring a first cell and a second cell for a first user equipment (ue), identifying at least one second subframes of the first cell, the at least one second subframe being associated with feedback information to be received in a first subframe of the first cell, and at least one third subframes of the second cell, determining whether there is a downlink (dl) data transmission in the at least one third subframe of the second cell, and determining to allocate the other frequency resources, which are other than a frequency resource used for transmission of the feedback information in the first subframe, to a second ue, if there is no dl data transmission in the at least one third subframe of the second cell..
Samsung Electronics Co., Ltd.


08/13/15
20150230242 

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


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


08/13/15
20150230240 

Method and terminal of transmitting an uplink signal with fewer transmission resource blocks to prevent a lowering in reference sensitivity in intra-band non-contiguous uplink carrier aggregation


There is provided a method of transmitting an uplink for reference sensitivity test for intra-band non-contiguous ca in lte-a system. The method may comprise: if a carrier aggregation (ca) is configured, if the configured ca corresponds to an intra-band ca, and if the configured ca corresponds to non-contiguous ca, transmitting an uplink on a primary component carrier using allocated resource blocks (rbs).
Lg Electronics Inc.


08/13/15
20150230236 

Uplink configuration and transmission control in inter-site carrier aggregation


There are provided measures for uplink configuration and transmission control in inter-site carrier aggregation. Such measures may exemplarily comprise measures for controlling configuration of a terminal device for an inter-site carrier aggregation mode, in which carriers from a macro cell and a micro cell are aggregated for uplink communication, with a configuration of uplink control information for the macro cell located at a first site and a configuration of uplink control information for the micro cell located at a second site, and/or measures for controlling transmission of a terminal device in the inter-site carrier aggregation mode with a handling of concurrent uplink transmissions at the terminal device..
Broadcom Corporation


08/13/15
20150230233 

Base station apparatus, radio communication system, and radio communication controlling method


A processor performs a process that includes decoding, from among a radio signal received by the radio signal receiving apparatus, control data that includes information indicating frequency bands that a mobile station apparatus is capable of dealing with, component carriers and scenarios for carrier aggregation, receiving the decoded control data, calculating, in accordance with the received control data, a transmission-bandwidth adjacency level value indicating a policy on component-carrier allocation to the mobile station apparatus, determining, in accordance with the calculated transmission-bandwidth adjacency level value, a component carrier to be allocated to the mobile station apparatus from among the component carriers and the frequency bands that the mobile station apparatus is capable of dealing with; and generating a transmission signal that includes information indicating the determined component carrier.. .
Fujitsu Limited


08/13/15
20150230206 

Dynamic antenna tuner setting for carrier aggregation scenarios


Apparatus and methods for dynamically adjusting radio frequency circuitry in a wireless communication device are disclosed. The wireless communication device can receive downlink communication using carrier aggregation through a primary component carrier and a secondary component carrier.
Apple Inc.


08/13/15
20150230112 

Method and apparatus in a multi-carrier system for controlling interruption and measurement performance


This disclosure provides example illustrations of device-side and network-side methods and apparatuses for avoiding more than a permitted level of interruption on a serving cell in association with the device making rrm and positioning measurements on one or more secondary component carriers, sccs, corresponding to one or more of the secondary cells, scells, configured for the device according to a carrier aggregation, ca, configuration. Among the several advantages flowing from these teachings, a wireless device avoids exceeding a permitted level of interruption on a serving cell downlink or uplink by aligning the positioning and rrm measurements with respect to each other, to avoid exceeding a permitted level of interruption on the serving cell.
Telefonaktiebolaget L M Ericsson (publ)


08/13/15
20150229462 

Terminal device, base station device, integrated circuit, and wireless communication method


A wireless communication system to which carrier aggregation is applied performs effective traffic adaptation. In a terminal device which communicates with a base station device using two serving cells including one primary cell and one secondary cell, in a case that a ul-dl configuration for the primary cell is different from a first downlink reference ul-dl configuration for the secondary cell and the serving cell is the secondary cell, a second downlink reference ul-dl configuration for the serving cell is set on the basis of a pair which is formed by the ul-dl configuration for the primary cell and the first downlink reference ul-dl configuration for the serving cell..
Sharp Kabushiki Kaisha


08/13/15
20150229383 

Communications method and apparatus


A communications apparatus and method are provided. The communications method for an apparatus capable of carrier aggregation (ca), wherein the apparatus includes a plurality of processing engines and antennas, includes the steps of determining whether the apparatus is configured in a single component carrier for a first group of the antennas; and activating a second group of the antennas if the apparatus is configured in the single component carrier..
Mediatek Inc.


08/06/15
20150223270 

Method and performing random access in a mobile communication system


The present disclosure relates to a method and apparatus for performing random access in a user equipment for a small cell e-nb with a small cell service area in heterogeneous e-nb cell carrier integration (dual connectivity or inter-enb carrier aggregation) in mobile communication systems. In accordance with an aspect of the present disclosure, a method for performing random access in a mobile communication system is provided.
Samsung Electronics Co., Ltd.


08/06/15
20150223265 

Carrier aggregation performance


A system and method for using carrier aggregation and enhanced inter-cell interference coordination in carrier scheduling is disclosed. The method comprises scheduling a communication of control channel information from at least one low power node on a physical downlink control channel (pdcch) over at least one of a first low power component carrier and a second low power component carrier.

08/06/15
20150223243 

Method and time division coexistence in unlicensed radio frequency bands for mobile devices


Apparatus and methods for time division multiplexing of radio frequency channels in unlicensed radio frequency bands by a wireless device in communication with a cellular wireless network are disclosed. The wireless device obtains, from an enodeb, a configuration for carrier aggregation using a primary component carrier (pcc) in a licensed radio frequency band and at least one secondary component carrier (scc) in an unlicensed radio frequency band.
Apple Inc.


08/06/15
20150223239 

Method and performing carrier aggregation using abs patterns in macro enb of wireless communication system connected to heterogeneous network


Methods and apparatuses are provided for performing carrier aggregation (ca) using a plurality of almost blank subframe (abs) patterns in a macro enhanced node b (enb) of a wireless communication system connected to a heterogeneous network. An abs pattern having a different pattern is determined for each component carrier (cc), when two or more carriers are deployed in each of the macro enb and at least one small cell enb.
Samsung Eletronics Co., Ltd.


08/06/15
20150223234 

Method and device for controlling transmission power for uplink control channel in carrier aggregation system


Provided are a method of controlling transmission power for an uplink control channel for a terminal to which a plurality of cells are assigned, and a device using the method. The method receives a first set of parameters and a second set of parameters that are used for determining transmission power for the uplink control channel and determines the transmission power for the uplink control channel by using the first set of parameters or the second set of parameters, wherein the first set of parameters or the second set of parameters is used according to one of the cells to which the uplink control channel is transmitted..
Lg Electronics Inc.


08/06/15
20150223233 

Method and device for transmitting and receiving signal by terminal in wireless communication system to which carrier aggregation technique is applied


The present application discloses a method of transmitting and receiving a signal by a terminal over a network in a wireless communication system. In particular, the method includes: receiving a downlink signal from the network through a downlink cell and transmitting an uplink signal to the network through a first uplink cell; receiving a specific message for changing an uplink cell from the network; and changing an uplink cell to a second uplink cell according to the specific message and transmitting the uplink signal to the network through the second uplink cell, wherein when changing the uplink cell, the downlink cell is maintained..
Lg Electronics Inc.


08/06/15
20150223137 

Carrier-aggregation-based handover method


Provided are a method for performing handover in a cellular mobile communication system that supports a carrier aggregation, and a user equipment and a node base (nodeb) using the method. A connection between the user equipment and the nodeb may be maintained and information may be exchanged using a plurality of serving carriers.
Electronics And Telecommunications Research Institute


08/06/15
20150223132 

Communication system, mobile station apparatus, and base station apparatus


A mobile station apparatus receives information indicating an event and parameters for evaluating a condition of the event using a first cell or a second cell wherein the condition of the event is evaluated for a neighboring cell on associated frequency of the second cell. A base station apparatus configures the first cell and the second cell.
Sharp Kabushiki Kaisha


08/06/15
20150223125 

Secondary cell selection based on geographic signatures


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 in the cellular communications network obtains geographic signatures for a number of candidate scells.
Telefonaktiebolaget L M Ericsson (publ)


08/06/15
20150223115 

Offloading and reselection policies and rules for mobile devices


Apparatus and methods for managing use of radio frequency channels in unlicensed radio frequency bands by a wireless communication device in communication with a cellular wireless network are disclosed. The wireless communication device obtains, from an enodeb of the wireless network, one or more access network discovery and selection function (andsf) policies that include rules for mobility of the wireless communication device and offloading of traffic for the wireless communication device to radio frequency channels in an unlicensed radio frequency band.
Apple Inc.


08/06/15
20150223072 

Implementing third generation partnership project protocols that combine use of international mobile telecommunication bands and non-international mobile telecommunication bands of licensed wireless communication spectrum


A system and method are provided to facilitate signaling between base stations controlled by alternate spectrum holders (ash's) and individual multi-mode devices (mmd's) operating in communication with those base stations to indicate an ability to a global spectrum marketplace of an ability of the base stations and/or the individual mmd's to support communication in both international mobile telecommunication (imt) and non-imt bands is support of a dynamic spectrum allocation scheme. The disclosed systems and methods may be based on a modification of the 3rd generation partnership protocol (3gpp®) long term evolution (lte®) standard so that non-imt licensed spectrum can be included in lte® or lte-advanced® multi-band carrier aggregation..
Intel Corporation


08/06/15
20150222410 

Method and frequency hopping coexistence in unlicensed radio frequency bands for mobile devices


Apparatus and methods for frequency hopping among a set of frequency channels used for secondary cells by wireless devices operating with carrier aggregation across a combination of licensed and unlicensed radio frequency (rf) bands are described. A wireless device establishes a connection with an enodeb using a primary component carrier (pcc) of a primary cell in a licensed radio frequency band.
Apple Inc.


08/06/15
20150222394 

Method, apparatus, ue, and base station for transmitting hybrid automatic repeat request-acknowledgement information


A method, an apparatus, a ue, and a base station for transmitting a harq-ack are disclosed. The method includes: determining a channel for transmitting a harq-ack; determining a harq-ack feedback bit; and sending the harq-ack feedback bit on the channel.
Huawei Technologies Co., Ltd.


07/30/15
20150215944 

Multicarrier-based data transmission method and apparatus in mobile communication system


A multicarrier-based data transmission method and an apparatus for use in a mobile communication system are provided. A radio network temporary identity (rnti) reception method of a terminal in a wireless communication system supporting inter-evolved node b (enb) carrier aggregation includes receiving cell information on at least one activated cell under control of an enb, configuring first and second rntis allocated by the enb, monitoring the at least one activated cell for the first rnti, and monitoring a primary cell among the at least one activated cell for the second rnti..
Samsung Electronics Co., Ltd.


07/30/15
20150215929 

Cell on-off procedure for dual connectivity


Dynamic cell mode indication and reporting channel state information for dormant cells in a dual connectivity carrier aggregation environment. Ues may be configured for carrier aggregation of cells associated with non-collocated enbs, which may include a master enb (menb) and one or more secondary enbs (senb), each supporting multiple carrier frequencies.
Qualcomm Incorporated


07/30/15
20150215878 

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


07/30/15
20150215800 

Inter-operability test indication for uplink-downlink configuration combinations for primary cell and secondary cell for wireless networks using carrier aggregation


A technique is provided to control transmitting, by a mobile station (ms) that uses carrier aggregation, a message including an interoperability test (iot) indication for one or more uplink-downlink (ul-dl) configuration combinations of time-division-duplex (tdd) radio frames for use by a primary cell and a secondary cell. In one example implementation, an iot indication may be provided for one or more (or each) uplink-downlink configuration combinations (e.g., one iot indication per ul-dl configuration combination).
Nokia Solutions And Networks Oy


07/30/15
20150215090 

Aperiodic and periodic csi feedback modes for coordinated multi-point transmission


Coordinate multi-point (comp) transmission is facilitated by resolving collisions between feedback reporting. Based upon the conditions within the network, collision resolution may be by dropping a channel report during a subframe, multiplexing channel reports from a plurality of user equipment, compressing channel reports from a plurality of user equipment, and combined reporting, either through joint reports or by using carrier aggregation, for conditions between a user equipment and a plurality of transmission points.
Samsung Electronics Co., Ltd.


07/30/15
20150215078 

Carrier aggregation with dynamic tdd dl/ul subframe configuration


A user equipment (ue) communicating in a carrier aggregation (ca) or multi-connectivity operation using more than one component carrier (cc), where at least one of the ccs is enabled to use evolved interference management for traffic adaptation (eimta), adapts the hybrid automatic repeat request (harq) timing of the ue communications based on changes in the eimta and configurations. The harq timing includes harq acknowledgement (ack) timing or harq scheduling timing..
Qualcomm Incorporated


07/23/15
20150208415 

Coverage enhancements with carrier aggregation


Methods, systems, and devices are described for effective deployment of coverage enhancements in applications involving carrier aggregation or reception-limited devices, or both. Different categories of user equipment (ue) may be configured to receive simultaneous broadcasts and unicasts differently according physical limitations of each category of ue.
Qualcomm Incorporated


07/23/15
20150208398 

Uplink grant, downlink assignment and search space method and apparatus in carrier aggregation


Methods of mapping, indicating, encoding and transmitting uplink (ul) grants and downlink (dl) assignments for wireless communications for carrier aggregation are disclosed. Methods to encode and transmit dl assignments and ul grants and map and indicate the dl assignments to dl component carriers and ul grants to ul component carriers are described.
Interdigital Patent Holdings, Inc.


07/23/15
20150208386 

Method for signaling control information, and apparatus therefor


The present invention relates to a wireless communication system, and more particularly, to a method for a terminal to transmit and receive control information and/or a response signal in a carrier aggregation-based wireless communication system, and to an apparatus therefor, wherein the method includes the steps of: constituting a first cell group having a pcell; constituting a second cell group having at least one scell; and carrying out a process for transmitting and receiving specific cell-related control information and/or a response signal. The control information and/or the response signal are transmitted and received on the first cell group or the second cell group in the event the first cell group and the second cell group are managed by the same base station.
Lg Electronics Inc.


07/23/15
20150208372 

Method and user equipment for synchronizing component carriers used in carrier aggregation


According to the present invention, user equipment synchronizes a specific component carrier with an nct-type component carrier with respect to time and/or frequency. The cell synchronization method for synchronizing predetermined cells by user equipment according to the present invention may include receiving reference cell information relating to a first synchronization reference cell for the predetermined cells, acquiring first synchronization information from the first synchronization cell based on the reference cell information, and performing the synchronization of the predetermined cells based on the first synchronization information..
Lg Electronics Inc.


07/23/15
20150208269 

Indication of cell mode and csi feedback rules for cell on-off procedure


Methods, systems, and devices are described for dynamic cell mode indication and reporting channel and interference feedback for dormant cells in a carrier aggregation environment. Indicators of cell mode for one or more secondary cells are sent using a transmission mechanism and may configure active or dormant sub-periods within the indicated periods.
Qualcomm Incorporated


07/23/15
20150208235 

Dual connectivity mode of operation of a user equipment in a wireless communication network


A system and method provide a security aspect for a ue in dual connectivity mode of operation in wireless communication networks. The system and method provide secure simultaneous transmission and reception in a secure manner between a user equipment (ue) and one or more enodebs (enbs) configured in an inter-enb carrier aggregation scenario.
Samsung Electronics Co., Ltd.


07/23/15
20150207700 

Evaluation of radio network performance


A method and network node (400) for supporting evaluation of performance of a radio network. The network node employs carrier aggregation with multiple carriers used in corresponding multiple cells (cell 1, cell2, cell 3).
Telefonaktiebolaget L M Ericsson (publ)


07/23/15
20150207605 

Optimized signaling of demodulation reference signal patterns


Orthogonality in cyclic shift (cs) and orthogonal cover code (occ) selection for dmrs in mimo is improved by new ndmrs to ndmrs(2) mapping patterns. Values in the mapping tables are arranged in sets, with minimum cs separation between the values in each set.
Telefonaktiebolaget L M Ericsson (publ)


07/23/15
20150207599 

System and partial bandwidth communication


A system and method for partial bandwidth communication. The system includes a device that has a transceiver configured to connect to a network, a memory storing an executable program and a processor.

07/16/15
20150200754 

Aperiodic and periodic csi feedback modes for coordinated multi-point transmission


Coordinate multi-point (comp) transmission is facilitated by resolving collisions between feedback reporting. Based upon the conditions within the network, collision resolution may be by dropping a channel report during a subframe, multiplexing channel reports from a plurality of user equipment, compressing channel reports from a plurality of user equipment, and combined reporting, either through joint reports or by using carrier aggregation, for conditions between a user equipment and a plurality of transmission points.
Samsung Electronics Co., Ltd.


07/16/15
20150200752 

Systems and methods for carrier aggregation


A ue for performing carrier aggregation is described. The ue determines a duplex method of each serving cell for carrier aggregation.
Sharp Laboratories Of America, Inc.


07/16/15
20150200751 

Enhanced pucch reporting 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.


07/09/15
20150195830 

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


A radio communication method of a user terminal and a radio base station adopting carrier aggregation to adequately feed back channel state information of a plurality of cells from a user terminal to a radio base station, is disclosed. The user terminal generates channel state information of each cell in uplink control channel format 2 or in format 3 based on the number of cells to use in carrier aggregation, feeds back the generated channel state information via resources that the radio base station sets in an uplink control channel of a primary cell at a predetermined time in accordance with an uplink control channel format, and the radio base station secures the resources to set in the uplink control channel when the channel state information of the primary cell is generated in uplink control channel format 2, regardless of the number of cells to use in carrier aggregation..
Ntt Docomo, Inc.


07/09/15
20150195062 

Method and terminal for performing harq


One disclosure of the present invention provides a method for performing a harq in a carrier aggregation. The method can comprise a step of receiving setting information with respect to a plurality of cell groups for setting a harq ack/nack, wherein each of the plurality of cell groups can comprise one or a plurality of serving cells.
Lg Electronics Inc.


07/02/15
20150189646 

Control information transmission method and a device therefor


A method for transmitting ack/nack (acknowledge/negative ack) information for two or more carriers at a user equipment in a wireless communication system which supports carrier aggregation. The method according to one embodiment includes generating an ack/nack payload including two or more ack/nack sets, wherein each ack/nack set is associated with a corresponding carrier and have one or more ack/nack bits; and transmitting the ack/nack payload through a pucch (physical uplink control channel) or pusch (physical uplink shared channel).
Lg Electronics Inc.


07/02/15
20150189516 

Method for operating serving cell in wireless communication system to which carrier aggregation scheme is applied and device for same


A method for operating a serving cell by a user equipment (ue) in a wireless communication system is disclosed. Specifically, the method comprises the steps of: forming a plurality of secondary cells (scells), as one group, corresponding to a same frequency band through an upper layer; setting an enabled first scell among the plurality of scells as the serving cell and transmitting and receiving signals with a network; receiving a serving cell configuration message from the network to disable the first scell and enable a second scell; and setting the enabled second scell as the serving cell and transmitting and receiving signals with the network..
Lg Electronics Inc.


07/02/15
20150188582 

Configurable receiver architecture for carrier aggregation with multiple-input multiple-output


A wireless communication system and method that includes configurable carrier aggregation (ca) and/or multiple-input multiple-output (mimo) operational modes. In ca, multiple carriers (i.e., channel bundling) are aggregated and jointly used for transmission to/from a single terminal.
Broadcom Corporation


06/25/15
20150181638 

Radio link control duplication for carrier aggregation


This disclosure relates to carrier aggregation using separate rlc entities for different component carriers. According to one embodiment, a base station and a wireless device may establish a primary component carrier and at least one secondary component carrier according to a first radio access technology.
Apple Inc.


06/25/15
20150181604 

Component carrier (de)activation in communication systems using carrier aggregation


This invention relates to the proposal of component carrier (de)activation message that is allowing a activation or deactivation of one or more component carriers in the uplink or downlink. Furthermore, the invention relates to the use of the new component carrier (de)activation message in methods for (de)activation of downlink component carrier(s) configured for a mobile terminal, a base station and a mobile terminal.
Panasonic Intellectual Property Corporation Of America


06/25/15
20150181590 

Method and controlling soft buffer for tdd-fdd carrier aggregation


Provided is a method and apparatus for controlling soft buffer for tdd-fdd carrier aggregation. The method includes: establishing a radio resource control (rrc) connection with a base station through a first serving cell, the first serving cell supporting a time division duplex (tdd) mode; receiving an rrc message from the base station through the first serving cell, the rrc message comprising carrier aggregation (ca) configuration information, the ca configuration information comprising information of a second serving cell supporting a frequency division duplex (fdd) mode; determining a maximum number of dl harq processes for the second serving cell, the maximum number of dl harq processes for the second serving cell being differently determined according to a dl reference timing; and storing soft channel bits for a received transport block (tb) based on the determined maximum number of dl harq processes for the second serving cell..
Innovative Technology Lab Co., Ltd.


06/25/15
20150181578 

Transmission downlink signal in wireless communication system and transmission apparatus therefor


A method is described for receiving a physical signal by a communication apparatus in a wireless communication system supporting carrier aggregation of a first component carrier and a second component carrier. The communication apparatus receives a physical downlink control channel (pdcch) signal on the first component carrier.
Lg Electronics Inc.


06/25/15
20150181479 

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


A method of radio link monitoring (rlm) and radio link failure (rlf) handling over a small cell network is proposed. In a wireless network, a user equipment (ue) establishes a radio resource control (rrc) connection with a base station (enb), which is ue anchor.
Mediatek Inc.


06/25/15
20150180694 

Radio frequency circuit for intra-band and inter-band carrier aggregation


A radio frequency (rf) circuit for intra-band and inter-band carrier aggregation includes a receive path configured to receive an input signal. The rf circuit includes a low noise amplifier which has multiple separate input stages and multiple separate output stages.
Nvidia Corporation


06/25/15
20150180617 

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


The invention proposes a method of implementing hybrid automatically retransmission feedback in a ue in a carrier aggregation network, wherein, the network comprises a self-scheduling primary cell and a secondary cell, and the method comprises: determining a reference frame configuration based on the frame configuration of the primary cell and the frame configuration of the secondary cell, wherein, the reference frame configuration is the type 5; determining a first quantity of downlink subframes of the secondary cell needing to be fed back in uplink subframes, according to the frame configuration of the secondary cell and downlink subframes, associated with uplink subframes, corresponding to the reference frame configuration; receiving from a base station a parameter about the number of downlink subframes fed back, and calculating a second quantity of downlink subframes needing to be fed back in the uplink subframes, based on the parameter; determining an actual quantity of downlink subframes actually fed back, based on the first quantity and the second quantity; implementing automatically retransmission feedback for downlink frames of the actual quantity in the physical shared channel, adjusted by uplink grants, in the uplink subframes.. .
Alcatel Lucent


06/18/15
20150173094 

System and providing priority data of band combinations for carrier aggregation


A system, devices and methods for providing input from a user equipment (ue) for the selection of a carrier channel combination for use in carrier aggregation. The exemplary system includes a ue configured to perform carrier aggregation, the ue storing a radio frequency (rf) calibration table including a plurality of transmission related requirements specific to the ue, the ue configured to generate priority data for each carrier channel combination supported for use in carrier aggregation based upon the rf calibration table and a network component receiving the priority data and an indication from the ue, the network component configured to select a carrier channel combination for use in carrier aggregation based upon the priority data, the network component transmitting carrier aggregation configuration data including the selected carrier channel combination to the ue..
Apple Inc.


06/18/15
20150173016 

Enhanced node b, user equipment and methods for discontinuous reception in inter-enb carrier aggregation


Embodiments of user equipment (ue) and methods for enhanced discontinuous reception (drx) operations for inter enb carrier aggregation (ca) in an lte network are generally described herein. In some embodiments, a ue is configured to be served by multiple serving cells.

06/18/15
20150173009 

Systems and methods for intelligent frequency selection in carrier aggregation enabled networks


Systems and methods that enhance radio link performance in a multi-carrier environment. A method may be performed by a ue that includes scanning a plurality of carrier components for a primary cell, determining a first bandwidth of the primary cell, scanning for a secondary cell, determining a second bandwidth of the secondary cell, determining a maximum aggregated bandwidth by combining the first bandwidth and the second bandwidth and when the maximum aggregated bandwidth exceeds a bandwidth capability of the ue, performing a cell selection procedure to select one of the primary cell or the secondary cell based on a higher of the first bandwidth and the second bandwidth..
Apple Inc.


06/18/15
20150172987 

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


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


06/18/15
20150172974 

Home base station and supporting plurality of cells under carrier aggregation


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


06/18/15
20150172039 

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


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


06/18/15
20150172032 

System and user equipment initiated management of carrier aggregation


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


06/11/15
20150163793 

Method and transmitting control information in a wireless communication system


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


06/11/15
20150163750 

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


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


06/11/15
20150163728 

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


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


06/11/15
20150163041 

Restrictions on transmissions of control plane data with carrier aggregation


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


06/11/15
20150163038 

Communication method using a carrier aggregation and apparatus therefore


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


06/04/15
20150156774 

Interworking base station between a wireless network and a cellular network


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


06/04/15
20150156773 

Control of carrier aggregation


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

06/04/15
20150156770 

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


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


06/04/15
20150156764 

Method for signaling control information, and apparatus therefor


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


06/04/15
20150156695 

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


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


06/04/15
20150156693 

Device to device communications with carrier aggregation


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


06/04/15
20150156636 

Carrier aggregation using unlicensed frequency bands


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


06/04/15
20150156635 

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


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


05/28/15
20150146806 

System and radio frequency carrier aggregation


A system and method for aggregation of a plurality of wireless communication signals in a common radio frequency transmitter. A multiple subchannel multiplexed (msm) signal within a frequency band, and having a communication protocol with pilot signals estimating a channel state and efficient signal demodulation with a mobile receiver is combined with another signal.
Plusn, Llc


05/28/15
20150146805 

System and radio frequency carrier aggregation


A system and method for aggregation of a plurality of wireless communication signals in a common radio frequency transmitter. A multiple subchannel multiplexed (msm) signal within a frequency band, and having a communication protocol with pilot signals estimating a channel state and efficient signal demodulation with a mobile receiver is combined with another signal.
Plusn, Llc


05/28/15
20150146585 

Apparatuses and method using enhanced control channel information for tdd-fdd carrier aggregation


Apparatuses and methods for carrier aggregation are generally described herein. An evolved nodeb (enb) may transmit downlink control information (dci) on a control channel portion for a primary cell (pcell) downlink (dl) subframe.
Intel Corporation




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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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